./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_rand_sub_67_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 527bcce2 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_f7289508-0428-4f9c-adb4-9475fa1afe97/bin/utaipan-verify-QoSU8krkJ5/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7289508-0428-4f9c-adb4-9475fa1afe97/bin/utaipan-verify-QoSU8krkJ5/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7289508-0428-4f9c-adb4-9475fa1afe97/bin/utaipan-verify-QoSU8krkJ5/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7289508-0428-4f9c-adb4-9475fa1afe97/bin/utaipan-verify-QoSU8krkJ5/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_rand_sub_67_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7289508-0428-4f9c-adb4-9475fa1afe97/bin/utaipan-verify-QoSU8krkJ5/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7289508-0428-4f9c-adb4-9475fa1afe97/bin/utaipan-verify-QoSU8krkJ5 --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 bdc69826daca7e7f55fe3e8067dcb910efb50c9933511961be6fdaa541a8924b --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 18:58:32,742 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 18:58:32,853 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7289508-0428-4f9c-adb4-9475fa1afe97/bin/utaipan-verify-QoSU8krkJ5/config/svcomp-Overflow-64bit-Taipan_Default.epf [2023-11-21 18:58:32,863 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 18:58:32,864 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 18:58:32,908 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 18:58:32,909 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 18:58:32,910 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 18:58:32,911 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 18:58:32,916 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 18:58:32,916 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-21 18:58:32,918 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-21 18:58:32,918 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-21 18:58:32,920 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-21 18:58:32,920 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-21 18:58:32,921 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-21 18:58:32,921 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-21 18:58:32,922 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-21 18:58:32,922 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-21 18:58:32,923 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-21 18:58:32,923 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-21 18:58:32,929 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-21 18:58:32,930 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 18:58:32,930 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 18:58:32,931 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 18:58:32,931 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 18:58:32,931 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 18:58:32,932 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 18:58:32,932 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 18:58:32,933 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-21 18:58:32,934 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 18:58:32,935 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 18:58:32,935 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 18:58:32,935 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 18:58:32,935 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 18:58:32,936 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 18:58:32,936 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 18:58:32,936 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 18:58:32,936 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 18:58:32,937 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 18:58:32,937 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-21 18:58:32,937 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 18:58:32,938 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 18:58:32,938 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 18:58:32,938 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-21 18:58:32,938 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 18:58:32,939 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_f7289508-0428-4f9c-adb4-9475fa1afe97/bin/utaipan-verify-QoSU8krkJ5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7289508-0428-4f9c-adb4-9475fa1afe97/bin/utaipan-verify-QoSU8krkJ5 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bdc69826daca7e7f55fe3e8067dcb910efb50c9933511961be6fdaa541a8924b [2023-11-21 18:58:33,261 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 18:58:33,293 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 18:58:33,295 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 18:58:33,297 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 18:58:33,298 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 18:58:33,300 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7289508-0428-4f9c-adb4-9475fa1afe97/bin/utaipan-verify-QoSU8krkJ5/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_rand_sub_67_bad.i [2023-11-21 18:58:36,623 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 18:58:37,093 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 18:58:37,094 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7289508-0428-4f9c-adb4-9475fa1afe97/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_rand_sub_67_bad.i [2023-11-21 18:58:37,128 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7289508-0428-4f9c-adb4-9475fa1afe97/bin/utaipan-verify-QoSU8krkJ5/data/d6787493f/5158bdaefa594969b67af430754c66df/FLAGbf8517074 [2023-11-21 18:58:37,144 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7289508-0428-4f9c-adb4-9475fa1afe97/bin/utaipan-verify-QoSU8krkJ5/data/d6787493f/5158bdaefa594969b67af430754c66df [2023-11-21 18:58:37,149 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 18:58:37,151 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 18:58:37,154 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 18:58:37,154 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 18:58:37,159 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 18:58:37,160 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 06:58:37" (1/1) ... [2023-11-21 18:58:37,161 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@798080ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:58:37, skipping insertion in model container [2023-11-21 18:58:37,161 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 06:58:37" (1/1) ... [2023-11-21 18:58:37,270 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 18:58:37,741 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-21 18:58:38,271 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 18:58:38,284 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 18:58:38,323 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-21 18:58:38,409 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 18:58:38,645 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 18:58:38,645 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 18:58:38,645 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 18:58:38,645 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 18:58:38,646 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 18:58:38,653 INFO L206 MainTranslator]: Completed translation [2023-11-21 18:58:38,654 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:58:38 WrapperNode [2023-11-21 18:58:38,654 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 18:58:38,656 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 18:58:38,656 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 18:58:38,656 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 18:58:38,664 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:58:38" (1/1) ... [2023-11-21 18:58:38,722 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:58:38" (1/1) ... [2023-11-21 18:58:38,764 INFO L138 Inliner]: procedures = 500, calls = 65, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 99 [2023-11-21 18:58:38,765 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 18:58:38,766 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 18:58:38,766 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 18:58:38,766 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 18:58:38,775 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:58:38" (1/1) ... [2023-11-21 18:58:38,775 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:58:38" (1/1) ... [2023-11-21 18:58:38,778 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:58:38" (1/1) ... [2023-11-21 18:58:38,779 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:58:38" (1/1) ... [2023-11-21 18:58:38,787 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:58:38" (1/1) ... [2023-11-21 18:58:38,789 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:58:38" (1/1) ... [2023-11-21 18:58:38,792 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:58:38" (1/1) ... [2023-11-21 18:58:38,794 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:58:38" (1/1) ... [2023-11-21 18:58:38,798 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 18:58:38,799 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 18:58:38,799 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 18:58:38,799 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 18:58:38,800 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:58:38" (1/1) ... [2023-11-21 18:58:38,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 18:58:38,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7289508-0428-4f9c-adb4-9475fa1afe97/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 18:58:38,834 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7289508-0428-4f9c-adb4-9475fa1afe97/bin/utaipan-verify-QoSU8krkJ5/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 18:58:38,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7289508-0428-4f9c-adb4-9475fa1afe97/bin/utaipan-verify-QoSU8krkJ5/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 18:58:38,881 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-21 18:58:38,882 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-21 18:58:38,882 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 18:58:38,882 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-21 18:58:38,882 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 18:58:38,882 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 18:58:38,882 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 18:58:38,882 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 18:58:38,883 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-21 18:58:38,883 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-21 18:58:38,883 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-21 18:58:39,038 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 18:58:39,041 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 18:58:39,308 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 18:58:39,550 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 18:58:39,550 INFO L308 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-21 18:58:39,552 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 06:58:39 BoogieIcfgContainer [2023-11-21 18:58:39,552 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 18:58:39,554 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 18:58:39,555 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 18:58:39,558 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 18:58:39,558 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 06:58:37" (1/3) ... [2023-11-21 18:58:39,559 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2efb1c3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 06:58:39, skipping insertion in model container [2023-11-21 18:58:39,560 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:58:38" (2/3) ... [2023-11-21 18:58:39,560 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2efb1c3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 06:58:39, skipping insertion in model container [2023-11-21 18:58:39,560 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 06:58:39" (3/3) ... [2023-11-21 18:58:39,561 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_rand_sub_67_bad.i [2023-11-21 18:58:39,581 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 18:58:39,582 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-21 18:58:39,630 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 18:58:39,637 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;@439c08e8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 18:58:39,637 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-21 18:58:39,642 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 8 states have internal predecessors, (8), 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) [2023-11-21 18:58:39,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-21 18:58:39,651 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 18:58:39,651 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-21 18:58:39,652 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-11-21 18:58:39,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 18:58:39,658 INFO L85 PathProgramCache]: Analyzing trace with hash -216742957, now seen corresponding path program 1 times [2023-11-21 18:58:39,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 18:58:39,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519533290] [2023-11-21 18:58:39,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 18:58:39,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 18:58:40,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 18:58:40,156 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 18:58:40,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 18:58:40,361 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-21 18:58:40,363 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-21 18:58:40,365 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2023-11-21 18:58:40,367 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2023-11-21 18:58:40,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 18:58:40,372 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-21 18:58:40,377 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-21 18:58:40,394 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #in~myStruct!structFirst [2023-11-21 18:58:40,397 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: Expression #in~myStruct!structFirst has a CASTFunctionDefinition but is no IdentifierExpression: IdentifierExpression [2023-11-21 18:58:40,413 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 06:58:40 BoogieIcfgContainer [2023-11-21 18:58:40,413 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-21 18:58:40,415 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-21 18:58:40,415 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-21 18:58:40,415 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-21 18:58:40,416 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 06:58:39" (3/4) ... [2023-11-21 18:58:40,418 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-21 18:58:40,419 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-21 18:58:40,421 INFO L158 Benchmark]: Toolchain (without parser) took 3269.78ms. Allocated memory was 132.1MB in the beginning and 184.5MB in the end (delta: 52.4MB). Free memory was 82.2MB in the beginning and 93.9MB in the end (delta: -11.7MB). Peak memory consumption was 42.1MB. Max. memory is 16.1GB. [2023-11-21 18:58:40,421 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 132.1MB. Free memory is still 78.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 18:58:40,423 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1501.03ms. Allocated memory was 132.1MB in the beginning and 184.5MB in the end (delta: 52.4MB). Free memory was 82.2MB in the beginning and 122.9MB in the end (delta: -40.8MB). Peak memory consumption was 51.1MB. Max. memory is 16.1GB. [2023-11-21 18:58:40,424 INFO L158 Benchmark]: Boogie Procedure Inliner took 109.45ms. Allocated memory is still 184.5MB. Free memory was 122.9MB in the beginning and 119.6MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-21 18:58:40,428 INFO L158 Benchmark]: Boogie Preprocessor took 32.13ms. Allocated memory is still 184.5MB. Free memory was 119.6MB in the beginning and 117.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 18:58:40,428 INFO L158 Benchmark]: RCFGBuilder took 753.14ms. Allocated memory is still 184.5MB. Free memory was 117.5MB in the beginning and 142.1MB in the end (delta: -24.6MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. [2023-11-21 18:58:40,429 INFO L158 Benchmark]: TraceAbstraction took 858.66ms. Allocated memory is still 184.5MB. Free memory was 142.1MB in the beginning and 95.0MB in the end (delta: 47.2MB). Peak memory consumption was 48.2MB. Max. memory is 16.1GB. [2023-11-21 18:58:40,429 INFO L158 Benchmark]: Witness Printer took 4.73ms. Allocated memory is still 184.5MB. Free memory was 95.0MB in the beginning and 93.9MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 18:58:40,432 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 132.1MB. Free memory is still 78.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1501.03ms. Allocated memory was 132.1MB in the beginning and 184.5MB in the end (delta: 52.4MB). Free memory was 82.2MB in the beginning and 122.9MB in the end (delta: -40.8MB). Peak memory consumption was 51.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 109.45ms. Allocated memory is still 184.5MB. Free memory was 122.9MB in the beginning and 119.6MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 32.13ms. Allocated memory is still 184.5MB. Free memory was 119.6MB in the beginning and 117.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 753.14ms. Allocated memory is still 184.5MB. Free memory was 117.5MB in the beginning and 142.1MB in the end (delta: -24.6MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. * TraceAbstraction took 858.66ms. Allocated memory is still 184.5MB. Free memory was 142.1MB in the beginning and 95.0MB in the end (delta: 47.2MB). Peak memory consumption was 48.2MB. Max. memory is 16.1GB. * Witness Printer took 4.73ms. Allocated memory is still 184.5MB. Free memory was 95.0MB in the beginning and 93.9MB in the end (delta: 1.0MB). 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 #in~myStruct!structFirst - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #in~myStruct!structFirst has a CASTFunctionDefinition but is no IdentifierExpression: IdentifierExpression - 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: 1573]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of bitwiseOr at line 1558. 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); [L1565] 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) [L1565] RET printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(argc)=6442450946, argc=6442450946, argv={6442450948:6442450947}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1566] CALL CWE191_Integer_Underflow__int_rand_sub_67_bad() [L1555] int data; [L1556] CWE191_Integer_Underflow__int_rand_sub_67_structType myStruct; [L1557] data = 0 [L1558] EXPR rand() & 1 ? (((unsigned)rand()<<30) ^ ((unsigned)rand()<<15) ^ rand()) : -(((unsigned)rand()<<30) ^ ((unsigned)rand()<<15) ^ rand()) - 1 [L1558] EXPR ((unsigned)rand()<<30) ^ ((unsigned)rand()<<15) [L1558] EXPR ((unsigned)rand()<<30) ^ ((unsigned)rand()<<15) ^ rand() [L1558] EXPR rand() & 1 ? (((unsigned)rand()<<30) ^ ((unsigned)rand()<<15) ^ rand()) : -(((unsigned)rand()<<30) ^ ((unsigned)rand()<<15) ^ rand()) - 1 [L1558] data = ((int)(rand() & 1 ? (((unsigned)rand()<<30) ^ ((unsigned)rand()<<15) ^ rand()) : -(((unsigned)rand()<<30) ^ ((unsigned)rand()<<15) ^ rand()) - 1)) [L1559] myStruct.structFirst = data [L1560] CALL CWE191_Integer_Underflow__int_rand_sub_67b_badSink(myStruct) [L1571] EXPR myStruct.structFirst [L1571] int data = myStruct.structFirst; [L1573] data - 1 VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, myStruct={6:0}] - UnprovableResult [Line: 1573]: 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, 12 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.8s, 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=12occurred 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, 0.3s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-21 18:58:40,478 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7289508-0428-4f9c-adb4-9475fa1afe97/bin/utaipan-verify-QoSU8krkJ5/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_f7289508-0428-4f9c-adb4-9475fa1afe97/bin/utaipan-verify-QoSU8krkJ5/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7289508-0428-4f9c-adb4-9475fa1afe97/bin/utaipan-verify-QoSU8krkJ5/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7289508-0428-4f9c-adb4-9475fa1afe97/bin/utaipan-verify-QoSU8krkJ5/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7289508-0428-4f9c-adb4-9475fa1afe97/bin/utaipan-verify-QoSU8krkJ5/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_rand_sub_67_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7289508-0428-4f9c-adb4-9475fa1afe97/bin/utaipan-verify-QoSU8krkJ5/config/svcomp-Overflow-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7289508-0428-4f9c-adb4-9475fa1afe97/bin/utaipan-verify-QoSU8krkJ5 --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 bdc69826daca7e7f55fe3e8067dcb910efb50c9933511961be6fdaa541a8924b --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 18:58:43,154 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 18:58:43,235 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7289508-0428-4f9c-adb4-9475fa1afe97/bin/utaipan-verify-QoSU8krkJ5/config/svcomp-Overflow-64bit-Taipan_Bitvector.epf [2023-11-21 18:58:43,250 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 18:58:43,251 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 18:58:43,282 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 18:58:43,282 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 18:58:43,283 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 18:58:43,284 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 18:58:43,285 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 18:58:43,285 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-21 18:58:43,286 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-21 18:58:43,286 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-21 18:58:43,287 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-21 18:58:43,288 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-21 18:58:43,288 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-21 18:58:43,289 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 18:58:43,290 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 18:58:43,290 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 18:58:43,291 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 18:58:43,291 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 18:58:43,292 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 18:58:43,293 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-21 18:58:43,293 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-21 18:58:43,294 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-21 18:58:43,294 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-21 18:58:43,295 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 18:58:43,295 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 18:58:43,296 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 18:58:43,296 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 18:58:43,297 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 18:58:43,297 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 18:58:43,298 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 18:58:43,298 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 18:58:43,299 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 18:58:43,299 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 18:58:43,300 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 18:58:43,300 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-21 18:58:43,301 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-21 18:58:43,301 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 18:58:43,302 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 18:58:43,303 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-21 18:58:43,303 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 18:58:43,304 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_f7289508-0428-4f9c-adb4-9475fa1afe97/bin/utaipan-verify-QoSU8krkJ5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7289508-0428-4f9c-adb4-9475fa1afe97/bin/utaipan-verify-QoSU8krkJ5 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bdc69826daca7e7f55fe3e8067dcb910efb50c9933511961be6fdaa541a8924b [2023-11-21 18:58:43,717 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 18:58:43,756 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 18:58:43,759 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 18:58:43,760 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 18:58:43,765 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 18:58:43,766 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7289508-0428-4f9c-adb4-9475fa1afe97/bin/utaipan-verify-QoSU8krkJ5/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_rand_sub_67_bad.i [2023-11-21 18:58:47,092 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 18:58:47,593 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 18:58:47,594 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7289508-0428-4f9c-adb4-9475fa1afe97/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_rand_sub_67_bad.i [2023-11-21 18:58:47,621 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7289508-0428-4f9c-adb4-9475fa1afe97/bin/utaipan-verify-QoSU8krkJ5/data/aa01ebeaf/3458255f5d8d484783db016f47d592a9/FLAGdffac47b9 [2023-11-21 18:58:47,638 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7289508-0428-4f9c-adb4-9475fa1afe97/bin/utaipan-verify-QoSU8krkJ5/data/aa01ebeaf/3458255f5d8d484783db016f47d592a9 [2023-11-21 18:58:47,641 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 18:58:47,642 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 18:58:47,644 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 18:58:47,644 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 18:58:47,650 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 18:58:47,651 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 06:58:47" (1/1) ... [2023-11-21 18:58:47,652 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f376d1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:58:47, skipping insertion in model container [2023-11-21 18:58:47,652 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 06:58:47" (1/1) ... [2023-11-21 18:58:47,721 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 18:58:48,155 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-21 18:58:48,772 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 18:58:48,789 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 18:58:48,816 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-21 18:58:48,958 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 18:58:49,130 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 18:58:49,130 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 18:58:49,130 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 18:58:49,131 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 18:58:49,131 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 18:58:49,140 INFO L206 MainTranslator]: Completed translation [2023-11-21 18:58:49,141 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:58:49 WrapperNode [2023-11-21 18:58:49,141 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 18:58:49,142 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 18:58:49,142 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 18:58:49,143 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 18:58:49,151 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:58:49" (1/1) ... [2023-11-21 18:58:49,183 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:58:49" (1/1) ... [2023-11-21 18:58:49,214 INFO L138 Inliner]: procedures = 505, calls = 65, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 67 [2023-11-21 18:58:49,214 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 18:58:49,215 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 18:58:49,216 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 18:58:49,216 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 18:58:49,227 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:58:49" (1/1) ... [2023-11-21 18:58:49,231 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:58:49" (1/1) ... [2023-11-21 18:58:49,241 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:58:49" (1/1) ... [2023-11-21 18:58:49,256 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:58:49" (1/1) ... [2023-11-21 18:58:49,268 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:58:49" (1/1) ... [2023-11-21 18:58:49,286 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:58:49" (1/1) ... [2023-11-21 18:58:49,290 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:58:49" (1/1) ... [2023-11-21 18:58:49,292 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:58:49" (1/1) ... [2023-11-21 18:58:49,297 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 18:58:49,298 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 18:58:49,299 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 18:58:49,299 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 18:58:49,300 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:58:49" (1/1) ... [2023-11-21 18:58:49,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 18:58:49,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7289508-0428-4f9c-adb4-9475fa1afe97/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 18:58:49,340 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7289508-0428-4f9c-adb4-9475fa1afe97/bin/utaipan-verify-QoSU8krkJ5/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 18:58:49,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7289508-0428-4f9c-adb4-9475fa1afe97/bin/utaipan-verify-QoSU8krkJ5/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 18:58:49,394 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-21 18:58:49,394 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-21 18:58:49,395 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 18:58:49,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-21 18:58:49,395 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 18:58:49,395 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 18:58:49,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 18:58:49,396 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-21 18:58:49,396 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 18:58:49,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-21 18:58:49,396 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-21 18:58:49,611 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 18:58:49,614 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 18:58:49,856 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 18:58:49,985 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 18:58:49,986 INFO L308 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-21 18:58:49,988 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 06:58:49 BoogieIcfgContainer [2023-11-21 18:58:49,988 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 18:58:49,993 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 18:58:49,993 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 18:58:49,996 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 18:58:49,998 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 06:58:47" (1/3) ... [2023-11-21 18:58:49,999 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5207587b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 06:58:49, skipping insertion in model container [2023-11-21 18:58:49,999 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:58:49" (2/3) ... [2023-11-21 18:58:49,999 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5207587b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 06:58:49, skipping insertion in model container [2023-11-21 18:58:50,000 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 06:58:49" (3/3) ... [2023-11-21 18:58:50,003 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_rand_sub_67_bad.i [2023-11-21 18:58:50,031 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 18:58:50,032 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-21 18:58:50,100 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 18:58:50,107 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;@6b5ae03d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 18:58:50,108 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-21 18:58:50,112 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 8 states have internal predecessors, (8), 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) [2023-11-21 18:58:50,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-21 18:58:50,127 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 18:58:50,128 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-21 18:58:50,128 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-11-21 18:58:50,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 18:58:50,137 INFO L85 PathProgramCache]: Analyzing trace with hash 2123776881, now seen corresponding path program 1 times [2023-11-21 18:58:50,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-21 18:58:50,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1369556546] [2023-11-21 18:58:50,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 18:58:50,175 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 18:58:50,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7289508-0428-4f9c-adb4-9475fa1afe97/bin/utaipan-verify-QoSU8krkJ5/mathsat [2023-11-21 18:58:50,180 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7289508-0428-4f9c-adb4-9475fa1afe97/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 18:58:50,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7289508-0428-4f9c-adb4-9475fa1afe97/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-21 18:58:50,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 18:58:50,382 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 18:58:50,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 18:58:50,480 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2023-11-21 18:58:50,482 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-21 18:58:50,484 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2023-11-21 18:58:50,487 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2023-11-21 18:58:50,499 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7289508-0428-4f9c-adb4-9475fa1afe97/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-21 18:58:50,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7289508-0428-4f9c-adb4-9475fa1afe97/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 18:58:50,700 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-21 18:58:50,705 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-21 18:58:50,727 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #in~myStruct!structFirst [2023-11-21 18:58:50,730 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: Expression #in~myStruct!structFirst has a CASTFunctionDefinition but is no IdentifierExpression: IdentifierExpression [2023-11-21 18:58:50,741 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 06:58:50 BoogieIcfgContainer [2023-11-21 18:58:50,741 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-21 18:58:50,743 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-21 18:58:50,744 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-21 18:58:50,744 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-21 18:58:50,745 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 06:58:49" (3/4) ... [2023-11-21 18:58:50,745 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-11-21 18:58:50,771 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #in~myStruct!structFirst [2023-11-21 18:58:50,772 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: Expression #in~myStruct!structFirst has a CASTFunctionDefinition but is no IdentifierExpression: IdentifierExpression [2023-11-21 18:58:50,851 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7289508-0428-4f9c-adb4-9475fa1afe97/bin/utaipan-verify-QoSU8krkJ5/witness.graphml [2023-11-21 18:58:50,851 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-21 18:58:50,852 INFO L158 Benchmark]: Toolchain (without parser) took 3209.83ms. Allocated memory was 62.9MB in the beginning and 94.4MB in the end (delta: 31.5MB). Free memory was 37.2MB in the beginning and 63.9MB in the end (delta: -26.7MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2023-11-21 18:58:50,853 INFO L158 Benchmark]: CDTParser took 0.76ms. Allocated memory is still 62.9MB. Free memory was 38.6MB in the beginning and 38.6MB in the end (delta: 42.7kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 18:58:50,854 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1497.31ms. Allocated memory was 62.9MB in the beginning and 77.6MB in the end (delta: 14.7MB). Free memory was 37.1MB in the beginning and 37.0MB in the end (delta: 90.1kB). Peak memory consumption was 28.8MB. Max. memory is 16.1GB. [2023-11-21 18:58:50,854 INFO L158 Benchmark]: Boogie Procedure Inliner took 72.69ms. Allocated memory is still 77.6MB. Free memory was 37.0MB in the beginning and 33.7MB in the end (delta: 3.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 18:58:50,854 INFO L158 Benchmark]: Boogie Preprocessor took 82.16ms. Allocated memory is still 77.6MB. Free memory was 33.7MB in the beginning and 31.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 18:58:50,860 INFO L158 Benchmark]: RCFGBuilder took 690.16ms. Allocated memory is still 77.6MB. Free memory was 31.6MB in the beginning and 32.5MB in the end (delta: -955.4kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-21 18:58:50,861 INFO L158 Benchmark]: TraceAbstraction took 748.35ms. Allocated memory was 77.6MB in the beginning and 94.4MB in the end (delta: 16.8MB). Free memory was 31.7MB in the beginning and 52.0MB in the end (delta: -20.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 18:58:50,862 INFO L158 Benchmark]: Witness Printer took 107.80ms. Allocated memory is still 94.4MB. Free memory was 52.0MB in the beginning and 63.9MB in the end (delta: -11.9MB). Peak memory consumption was 4.8MB. Max. memory is 16.1GB. [2023-11-21 18:58:50,864 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.76ms. Allocated memory is still 62.9MB. Free memory was 38.6MB in the beginning and 38.6MB in the end (delta: 42.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1497.31ms. Allocated memory was 62.9MB in the beginning and 77.6MB in the end (delta: 14.7MB). Free memory was 37.1MB in the beginning and 37.0MB in the end (delta: 90.1kB). Peak memory consumption was 28.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 72.69ms. Allocated memory is still 77.6MB. Free memory was 37.0MB in the beginning and 33.7MB in the end (delta: 3.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 82.16ms. Allocated memory is still 77.6MB. Free memory was 33.7MB in the beginning and 31.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 690.16ms. Allocated memory is still 77.6MB. Free memory was 31.6MB in the beginning and 32.5MB in the end (delta: -955.4kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 748.35ms. Allocated memory was 77.6MB in the beginning and 94.4MB in the end (delta: 16.8MB). Free memory was 31.7MB in the beginning and 52.0MB in the end (delta: -20.3MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 107.80ms. Allocated memory is still 94.4MB. Free memory was 52.0MB in the beginning and 63.9MB in the end (delta: -11.9MB). Peak memory consumption was 4.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #in~myStruct!structFirst - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #in~myStruct!structFirst has a CASTFunctionDefinition but is no IdentifierExpression: IdentifierExpression - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #in~myStruct!structFirst - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #in~myStruct!structFirst has a CASTFunctionDefinition but is no IdentifierExpression: IdentifierExpression - 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 - CounterExampleResult [Line: 1573]: integer overflow possible integer overflow possible We found a 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); [L1565] 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) [L1565] 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] [L1566] CALL CWE191_Integer_Underflow__int_rand_sub_67_bad() [L1555] int data; [L1556] CWE191_Integer_Underflow__int_rand_sub_67_structType myStruct; [L1557] data = 0 [L1558] EXPR rand() & 1 ? (((unsigned)rand()<<30) ^ ((unsigned)rand()<<15) ^ rand()) : -(((unsigned)rand()<<30) ^ ((unsigned)rand()<<15) ^ rand()) - 1 [L1558] EXPR rand() & 1 ? (((unsigned)rand()<<30) ^ ((unsigned)rand()<<15) ^ rand()) : -(((unsigned)rand()<<30) ^ ((unsigned)rand()<<15) ^ rand()) - 1 [L1558] data = ((int)(rand() & 1 ? (((unsigned)rand()<<30) ^ ((unsigned)rand()<<15) ^ rand()) : -(((unsigned)rand()<<30) ^ ((unsigned)rand()<<15) ^ rand()) - 1)) [L1559] myStruct.structFirst = data [L1560] CALL CWE191_Integer_Underflow__int_rand_sub_67b_badSink(myStruct) [L1571] EXPR myStruct.structFirst [L1571] int data = myStruct.structFirst; [L1573] data - 1 VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, myStruct={5:0}] - UnprovableResult [Line: 1573]: 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, 12 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred 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, 6 NumberOfCodeBlocks, 6 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 proved your program to be incorrect! [2023-11-21 18:58:50,929 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7289508-0428-4f9c-adb4-9475fa1afe97/bin/utaipan-verify-QoSU8krkJ5/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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW)