./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_rand_predec_52_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 527bcce2 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f9286ac-0244-4e1c-9020-916dff6c6676/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f9286ac-0244-4e1c-9020-916dff6c6676/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f9286ac-0244-4e1c-9020-916dff6c6676/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f9286ac-0244-4e1c-9020-916dff6c6676/bin/uautomizer-verify-bycVGegfSx/config/AutomizerReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_rand_predec_52_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f9286ac-0244-4e1c-9020-916dff6c6676/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f9286ac-0244-4e1c-9020-916dff6c6676/bin/uautomizer-verify-bycVGegfSx --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 Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 3e36a199aa0ccdd77af56159f0b4bbf8a4cac90e77a9fae4396e11976ef891d5 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 21:00:30,759 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 21:00:30,876 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f9286ac-0244-4e1c-9020-916dff6c6676/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Overflow-64bit-Automizer_Default.epf [2023-11-21 21:00:30,888 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 21:00:30,889 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 21:00:30,929 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 21:00:30,931 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 21:00:30,932 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 21:00:30,933 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-21 21:00:30,938 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-21 21:00:30,939 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 21:00:30,940 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 21:00:30,941 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 21:00:30,943 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 21:00:30,944 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 21:00:30,944 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 21:00:30,945 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 21:00:30,945 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 21:00:30,946 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 21:00:30,947 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 21:00:30,947 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 21:00:30,948 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 21:00:30,948 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-21 21:00:30,949 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 21:00:30,949 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 21:00:30,950 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 21:00:30,951 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 21:00:30,951 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 21:00:30,952 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 21:00:30,952 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 21:00:30,954 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 21:00:30,954 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 21:00:30,954 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 21:00:30,955 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 21:00:30,955 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 21:00:30,955 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 21:00:30,956 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 21:00:30,956 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 21:00:30,956 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 21:00:30,957 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 21:00:30,957 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 21:00:30,958 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_4f9286ac-0244-4e1c-9020-916dff6c6676/bin/uautomizer-verify-bycVGegfSx/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f9286ac-0244-4e1c-9020-916dff6c6676/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3e36a199aa0ccdd77af56159f0b4bbf8a4cac90e77a9fae4396e11976ef891d5 [2023-11-21 21:00:31,281 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 21:00:31,313 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 21:00:31,316 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 21:00:31,317 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 21:00:31,318 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 21:00:31,319 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f9286ac-0244-4e1c-9020-916dff6c6676/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_rand_predec_52_bad.i [2023-11-21 21:00:34,403 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 21:00:34,837 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 21:00:34,841 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f9286ac-0244-4e1c-9020-916dff6c6676/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_rand_predec_52_bad.i [2023-11-21 21:00:34,869 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f9286ac-0244-4e1c-9020-916dff6c6676/bin/uautomizer-verify-bycVGegfSx/data/e3c6b18fe/7a0e98ebf3b44d63bb6d2f2ccea65967/FLAGb458475c7 [2023-11-21 21:00:34,886 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f9286ac-0244-4e1c-9020-916dff6c6676/bin/uautomizer-verify-bycVGegfSx/data/e3c6b18fe/7a0e98ebf3b44d63bb6d2f2ccea65967 [2023-11-21 21:00:34,890 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 21:00:34,891 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 21:00:34,893 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 21:00:34,894 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 21:00:34,900 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 21:00:34,901 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:00:34" (1/1) ... [2023-11-21 21:00:34,902 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@659a7620 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:00:34, skipping insertion in model container [2023-11-21 21:00:34,902 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:00:34" (1/1) ... [2023-11-21 21:00:34,981 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 21:00:35,456 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-21 21:00:36,101 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 21:00:36,121 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 21:00:36,154 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-21 21:00:36,255 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 21:00:36,435 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 21:00:36,436 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 21:00:36,436 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 21:00:36,436 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 21:00:36,436 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 21:00:36,445 INFO L206 MainTranslator]: Completed translation [2023-11-21 21:00:36,445 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:00:36 WrapperNode [2023-11-21 21:00:36,445 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 21:00:36,447 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 21:00:36,447 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 21:00:36,447 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 21:00:36,455 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:00:36" (1/1) ... [2023-11-21 21:00:36,499 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:00:36" (1/1) ... [2023-11-21 21:00:36,533 INFO L138 Inliner]: procedures = 501, calls = 58, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 92 [2023-11-21 21:00:36,534 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 21:00:36,535 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 21:00:36,535 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 21:00:36,535 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 21:00:36,547 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:00:36" (1/1) ... [2023-11-21 21:00:36,547 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:00:36" (1/1) ... [2023-11-21 21:00:36,551 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:00:36" (1/1) ... [2023-11-21 21:00:36,563 INFO L187 HeapSplitter]: Split 1 memory accesses to 1 slices as follows [1] [2023-11-21 21:00:36,564 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:00:36" (1/1) ... [2023-11-21 21:00:36,564 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:00:36" (1/1) ... [2023-11-21 21:00:36,571 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:00:36" (1/1) ... [2023-11-21 21:00:36,573 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:00:36" (1/1) ... [2023-11-21 21:00:36,576 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:00:36" (1/1) ... [2023-11-21 21:00:36,577 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:00:36" (1/1) ... [2023-11-21 21:00:36,581 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 21:00:36,582 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 21:00:36,582 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 21:00:36,582 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 21:00:36,583 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:00:36" (1/1) ... [2023-11-21 21:00:36,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 21:00:36,604 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f9286ac-0244-4e1c-9020-916dff6c6676/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:00:36,616 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f9286ac-0244-4e1c-9020-916dff6c6676/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 21:00:36,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f9286ac-0244-4e1c-9020-916dff6c6676/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 21:00:36,649 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-21 21:00:36,650 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-21 21:00:36,650 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 21:00:36,650 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 21:00:36,650 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 21:00:36,651 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-21 21:00:36,651 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-21 21:00:36,802 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 21:00:36,805 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 21:00:37,026 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 21:00:37,371 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 21:00:37,371 INFO L308 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-21 21:00:37,373 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:00:37 BoogieIcfgContainer [2023-11-21 21:00:37,374 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 21:00:37,378 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 21:00:37,378 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 21:00:37,382 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 21:00:37,383 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 09:00:34" (1/3) ... [2023-11-21 21:00:37,384 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72db7af4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 09:00:37, skipping insertion in model container [2023-11-21 21:00:37,384 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:00:36" (2/3) ... [2023-11-21 21:00:37,386 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72db7af4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 09:00:37, skipping insertion in model container [2023-11-21 21:00:37,387 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:00:37" (3/3) ... [2023-11-21 21:00:37,388 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_rand_predec_52_bad.i [2023-11-21 21:00:37,409 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 21:00:37,409 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-21 21:00:37,455 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 21:00:37,461 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=PETRI_NET, 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;@7c8605a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 21:00:37,462 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-21 21:00:37,465 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 21:00:37,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-21 21:00:37,473 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:00:37,474 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-21 21:00:37,474 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-11-21 21:00:37,480 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:00:37,480 INFO L85 PathProgramCache]: Analyzing trace with hash -157605807, now seen corresponding path program 1 times [2023-11-21 21:00:37,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:00:37,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556510496] [2023-11-21 21:00:37,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:00:37,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:00:37,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 21:00:37,895 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 21:00:38,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 21:00:38,117 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 21:00:38,120 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-21 21:00:38,122 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2023-11-21 21:00:38,132 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2023-11-21 21:00:38,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 21:00:38,143 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-21 21:00:38,147 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-21 21:00:38,171 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 09:00:38 BoogieIcfgContainer [2023-11-21 21:00:38,171 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-21 21:00:38,173 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-21 21:00:38,173 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-21 21:00:38,173 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-21 21:00:38,174 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:00:37" (3/4) ... [2023-11-21 21:00:38,176 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-21 21:00:38,177 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-21 21:00:38,179 INFO L158 Benchmark]: Toolchain (without parser) took 3287.06ms. Allocated memory was 155.2MB in the beginning and 188.7MB in the end (delta: 33.6MB). Free memory was 108.9MB in the beginning and 89.2MB in the end (delta: 19.7MB). Peak memory consumption was 54.2MB. Max. memory is 16.1GB. [2023-11-21 21:00:38,180 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 117.4MB. Free memory is still 67.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 21:00:38,181 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1552.63ms. Allocated memory is still 155.2MB. Free memory was 108.5MB in the beginning and 92.5MB in the end (delta: 16.0MB). Peak memory consumption was 48.8MB. Max. memory is 16.1GB. [2023-11-21 21:00:38,181 INFO L158 Benchmark]: Boogie Procedure Inliner took 87.53ms. Allocated memory is still 155.2MB. Free memory was 92.5MB in the beginning and 89.6MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-21 21:00:38,186 INFO L158 Benchmark]: Boogie Preprocessor took 46.50ms. Allocated memory is still 155.2MB. Free memory was 89.6MB in the beginning and 86.7MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 21:00:38,187 INFO L158 Benchmark]: RCFGBuilder took 792.16ms. Allocated memory was 155.2MB in the beginning and 188.7MB in the end (delta: 33.6MB). Free memory was 86.7MB in the beginning and 137.5MB in the end (delta: -50.7MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2023-11-21 21:00:38,188 INFO L158 Benchmark]: TraceAbstraction took 793.05ms. Allocated memory is still 188.7MB. Free memory was 136.4MB in the beginning and 90.3MB in the end (delta: 46.1MB). Peak memory consumption was 46.1MB. Max. memory is 16.1GB. [2023-11-21 21:00:38,189 INFO L158 Benchmark]: Witness Printer took 4.72ms. Allocated memory is still 188.7MB. Free memory was 90.3MB in the beginning and 89.2MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 21:00:38,198 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 117.4MB. Free memory is still 67.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1552.63ms. Allocated memory is still 155.2MB. Free memory was 108.5MB in the beginning and 92.5MB in the end (delta: 16.0MB). Peak memory consumption was 48.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 87.53ms. Allocated memory is still 155.2MB. Free memory was 92.5MB in the beginning and 89.6MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 46.50ms. Allocated memory is still 155.2MB. Free memory was 89.6MB in the beginning and 86.7MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 792.16ms. Allocated memory was 155.2MB in the beginning and 188.7MB in the end (delta: 33.6MB). Free memory was 86.7MB in the beginning and 137.5MB in the end (delta: -50.7MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 793.05ms. Allocated memory is still 188.7MB. Free memory was 136.4MB in the beginning and 90.3MB in the end (delta: 46.1MB). Peak memory consumption was 46.1MB. Max. memory is 16.1GB. * Witness Printer took 4.72ms. Allocated memory is still 188.7MB. Free memory was 90.3MB in the beginning and 89.2MB 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.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 1572]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of bitwiseOr at line 1553. 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); [L1559] 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) [L1559] RET printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(argc)=10737418241, argc=10737418241, argv={10737418243:10737418242}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1560] CALL CWE191_Integer_Underflow__int_rand_predec_52_bad() [L1551] int data; [L1552] data = 0 [L1553] EXPR rand() & 1 ? (((unsigned)rand()<<30) ^ ((unsigned)rand()<<15) ^ rand()) : -(((unsigned)rand()<<30) ^ ((unsigned)rand()<<15) ^ rand()) - 1 [L1553] EXPR ((unsigned)rand()<<30) ^ ((unsigned)rand()<<15) [L1553] EXPR ((unsigned)rand()<<30) ^ ((unsigned)rand()<<15) ^ rand() [L1553] EXPR rand() & 1 ? (((unsigned)rand()<<30) ^ ((unsigned)rand()<<15) ^ rand()) : -(((unsigned)rand()<<30) ^ ((unsigned)rand()<<15) ^ rand()) - 1 [L1553] data = ((int)(rand() & 1 ? (((unsigned)rand()<<30) ^ ((unsigned)rand()<<15) ^ rand()) : -(((unsigned)rand()<<30) ^ ((unsigned)rand()<<15) ^ rand()) - 1)) [L1554] CALL CWE191_Integer_Underflow__int_rand_predec_52b_badSink(data) [L1567] CALL CWE191_Integer_Underflow__int_rand_predec_52c_badSink(data) [L1572] --data VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(data)=-2147483648, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] - UnprovableResult [Line: 1572]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 12 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, 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 21:00:38,246 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f9286ac-0244-4e1c-9020-916dff6c6676/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f9286ac-0244-4e1c-9020-916dff6c6676/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f9286ac-0244-4e1c-9020-916dff6c6676/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f9286ac-0244-4e1c-9020-916dff6c6676/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f9286ac-0244-4e1c-9020-916dff6c6676/bin/uautomizer-verify-bycVGegfSx/config/AutomizerReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_rand_predec_52_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f9286ac-0244-4e1c-9020-916dff6c6676/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Overflow-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f9286ac-0244-4e1c-9020-916dff6c6676/bin/uautomizer-verify-bycVGegfSx --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 Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 3e36a199aa0ccdd77af56159f0b4bbf8a4cac90e77a9fae4396e11976ef891d5 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 21:00:40,854 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 21:00:40,984 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f9286ac-0244-4e1c-9020-916dff6c6676/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Overflow-64bit-Automizer_Bitvector.epf [2023-11-21 21:00:40,993 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 21:00:40,997 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 21:00:40,997 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-11-21 21:00:41,033 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 21:00:41,034 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 21:00:41,034 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 21:00:41,035 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-21 21:00:41,036 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-21 21:00:41,038 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 21:00:41,038 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 21:00:41,039 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 21:00:41,040 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 21:00:41,040 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 21:00:41,041 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 21:00:41,041 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 21:00:41,042 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 21:00:41,042 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 21:00:41,043 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 21:00:41,047 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 21:00:41,048 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-21 21:00:41,048 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-21 21:00:41,052 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-21 21:00:41,052 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-21 21:00:41,052 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 21:00:41,053 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 21:00:41,053 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 21:00:41,054 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 21:00:41,054 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 21:00:41,055 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 21:00:41,055 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 21:00:41,055 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 21:00:41,056 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 21:00:41,056 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 21:00:41,056 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 21:00:41,056 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-21 21:00:41,057 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-21 21:00:41,057 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 21:00:41,057 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 21:00:41,058 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 21:00:41,058 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 21:00:41,058 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 21:00:41,059 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-21 21:00:41,059 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_4f9286ac-0244-4e1c-9020-916dff6c6676/bin/uautomizer-verify-bycVGegfSx/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f9286ac-0244-4e1c-9020-916dff6c6676/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3e36a199aa0ccdd77af56159f0b4bbf8a4cac90e77a9fae4396e11976ef891d5 [2023-11-21 21:00:41,445 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 21:00:41,466 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 21:00:41,469 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 21:00:41,471 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 21:00:41,471 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 21:00:41,473 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f9286ac-0244-4e1c-9020-916dff6c6676/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_rand_predec_52_bad.i [2023-11-21 21:00:44,527 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 21:00:44,995 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 21:00:44,996 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f9286ac-0244-4e1c-9020-916dff6c6676/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_rand_predec_52_bad.i [2023-11-21 21:00:45,023 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f9286ac-0244-4e1c-9020-916dff6c6676/bin/uautomizer-verify-bycVGegfSx/data/c88914e16/c9edf3e41cfa43ffbbbd53a6971c7c00/FLAG87c27ddbc [2023-11-21 21:00:45,043 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f9286ac-0244-4e1c-9020-916dff6c6676/bin/uautomizer-verify-bycVGegfSx/data/c88914e16/c9edf3e41cfa43ffbbbd53a6971c7c00 [2023-11-21 21:00:45,048 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 21:00:45,050 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 21:00:45,054 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 21:00:45,054 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 21:00:45,060 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 21:00:45,060 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:00:45" (1/1) ... [2023-11-21 21:00:45,062 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29e9cd64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:00:45, skipping insertion in model container [2023-11-21 21:00:45,065 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:00:45" (1/1) ... [2023-11-21 21:00:45,170 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 21:00:45,622 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-21 21:00:46,202 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 21:00:46,226 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 21:00:46,262 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-21 21:00:46,363 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 21:00:46,515 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 21:00:46,516 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 21:00:46,516 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 21:00:46,516 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 21:00:46,516 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 21:00:46,525 INFO L206 MainTranslator]: Completed translation [2023-11-21 21:00:46,525 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:00:46 WrapperNode [2023-11-21 21:00:46,525 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 21:00:46,527 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 21:00:46,527 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 21:00:46,527 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 21:00:46,535 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:00:46" (1/1) ... [2023-11-21 21:00:46,572 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:00:46" (1/1) ... [2023-11-21 21:00:46,600 INFO L138 Inliner]: procedures = 506, calls = 58, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 60 [2023-11-21 21:00:46,600 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 21:00:46,601 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 21:00:46,601 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 21:00:46,602 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 21:00:46,618 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:00:46" (1/1) ... [2023-11-21 21:00:46,619 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:00:46" (1/1) ... [2023-11-21 21:00:46,641 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:00:46" (1/1) ... [2023-11-21 21:00:46,657 INFO L187 HeapSplitter]: Split 1 memory accesses to 1 slices as follows [1] [2023-11-21 21:00:46,657 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:00:46" (1/1) ... [2023-11-21 21:00:46,658 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:00:46" (1/1) ... [2023-11-21 21:00:46,683 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:00:46" (1/1) ... [2023-11-21 21:00:46,685 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:00:46" (1/1) ... [2023-11-21 21:00:46,689 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:00:46" (1/1) ... [2023-11-21 21:00:46,690 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:00:46" (1/1) ... [2023-11-21 21:00:46,695 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 21:00:46,706 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 21:00:46,706 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 21:00:46,707 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 21:00:46,707 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:00:46" (1/1) ... [2023-11-21 21:00:46,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 21:00:46,739 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f9286ac-0244-4e1c-9020-916dff6c6676/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:00:46,755 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f9286ac-0244-4e1c-9020-916dff6c6676/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 21:00:46,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f9286ac-0244-4e1c-9020-916dff6c6676/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 21:00:46,805 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-21 21:00:46,806 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-21 21:00:46,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-11-21 21:00:46,806 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 21:00:46,806 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 21:00:46,806 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 21:00:46,807 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-21 21:00:47,019 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 21:00:47,021 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 21:00:47,219 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 21:00:47,331 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 21:00:47,331 INFO L308 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-21 21:00:47,333 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:00:47 BoogieIcfgContainer [2023-11-21 21:00:47,333 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 21:00:47,335 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 21:00:47,336 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 21:00:47,339 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 21:00:47,339 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 09:00:45" (1/3) ... [2023-11-21 21:00:47,346 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74d9222 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 09:00:47, skipping insertion in model container [2023-11-21 21:00:47,346 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:00:46" (2/3) ... [2023-11-21 21:00:47,347 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74d9222 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 09:00:47, skipping insertion in model container [2023-11-21 21:00:47,350 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:00:47" (3/3) ... [2023-11-21 21:00:47,351 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_rand_predec_52_bad.i [2023-11-21 21:00:47,372 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 21:00:47,372 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-21 21:00:47,432 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 21:00:47,439 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=PETRI_NET, 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;@7d0fb728, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 21:00:47,439 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-21 21:00:47,444 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 21:00:47,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-21 21:00:47,463 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:00:47,464 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-21 21:00:47,465 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-11-21 21:00:47,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:00:47,474 INFO L85 PathProgramCache]: Analyzing trace with hash -2083364532, now seen corresponding path program 1 times [2023-11-21 21:00:47,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 21:00:47,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1983943587] [2023-11-21 21:00:47,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:00:47,490 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 21:00:47,490 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f9286ac-0244-4e1c-9020-916dff6c6676/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 21:00:47,496 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f9286ac-0244-4e1c-9020-916dff6c6676/bin/uautomizer-verify-bycVGegfSx/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 21:00:47,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f9286ac-0244-4e1c-9020-916dff6c6676/bin/uautomizer-verify-bycVGegfSx/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 21:00:47,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 21:00:47,627 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 21:00:47,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 21:00:47,681 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2023-11-21 21:00:47,683 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-21 21:00:47,685 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2023-11-21 21:00:47,686 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2023-11-21 21:00:47,696 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f9286ac-0244-4e1c-9020-916dff6c6676/bin/uautomizer-verify-bycVGegfSx/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 21:00:47,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f9286ac-0244-4e1c-9020-916dff6c6676/bin/uautomizer-verify-bycVGegfSx/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 21:00:47,891 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-21 21:00:47,895 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-21 21:00:47,923 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 09:00:47 BoogieIcfgContainer [2023-11-21 21:00:47,923 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-21 21:00:47,927 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-21 21:00:47,927 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-21 21:00:47,928 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-21 21:00:47,928 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:00:47" (3/4) ... [2023-11-21 21:00:47,929 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-11-21 21:00:47,969 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f9286ac-0244-4e1c-9020-916dff6c6676/bin/uautomizer-verify-bycVGegfSx/witness.graphml [2023-11-21 21:00:47,970 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-21 21:00:47,971 INFO L158 Benchmark]: Toolchain (without parser) took 2921.09ms. Allocated memory was 71.3MB in the beginning and 98.6MB in the end (delta: 27.3MB). Free memory was 43.4MB in the beginning and 58.5MB in the end (delta: -15.1MB). Peak memory consumption was 14.3MB. Max. memory is 16.1GB. [2023-11-21 21:00:47,972 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 71.3MB. Free memory is still 46.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 21:00:47,972 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1472.07ms. Allocated memory was 71.3MB in the beginning and 98.6MB in the end (delta: 27.3MB). Free memory was 43.1MB in the beginning and 46.9MB in the end (delta: -3.8MB). Peak memory consumption was 30.2MB. Max. memory is 16.1GB. [2023-11-21 21:00:47,973 INFO L158 Benchmark]: Boogie Procedure Inliner took 73.97ms. Allocated memory is still 98.6MB. Free memory was 46.9MB in the beginning and 43.9MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 21:00:47,974 INFO L158 Benchmark]: Boogie Preprocessor took 93.94ms. Allocated memory is still 98.6MB. Free memory was 43.9MB in the beginning and 69.0MB in the end (delta: -25.1MB). Peak memory consumption was 5.7MB. Max. memory is 16.1GB. [2023-11-21 21:00:47,974 INFO L158 Benchmark]: RCFGBuilder took 627.15ms. Allocated memory is still 98.6MB. Free memory was 69.0MB in the beginning and 50.1MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-21 21:00:47,975 INFO L158 Benchmark]: TraceAbstraction took 587.37ms. Allocated memory is still 98.6MB. Free memory was 49.5MB in the beginning and 61.2MB in the end (delta: -11.6MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 21:00:47,975 INFO L158 Benchmark]: Witness Printer took 42.70ms. Allocated memory is still 98.6MB. Free memory was 60.6MB in the beginning and 58.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 21:00:47,987 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 71.3MB. Free memory is still 46.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1472.07ms. Allocated memory was 71.3MB in the beginning and 98.6MB in the end (delta: 27.3MB). Free memory was 43.1MB in the beginning and 46.9MB in the end (delta: -3.8MB). Peak memory consumption was 30.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 73.97ms. Allocated memory is still 98.6MB. Free memory was 46.9MB in the beginning and 43.9MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 93.94ms. Allocated memory is still 98.6MB. Free memory was 43.9MB in the beginning and 69.0MB in the end (delta: -25.1MB). Peak memory consumption was 5.7MB. Max. memory is 16.1GB. * RCFGBuilder took 627.15ms. Allocated memory is still 98.6MB. Free memory was 69.0MB in the beginning and 50.1MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 587.37ms. Allocated memory is still 98.6MB. Free memory was 49.5MB in the beginning and 61.2MB in the end (delta: -11.6MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 42.70ms. Allocated memory is still 98.6MB. Free memory was 60.6MB in the beginning and 58.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * 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: 1572]: 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); [L1559] 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) [L1559] 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] [L1560] CALL CWE191_Integer_Underflow__int_rand_predec_52_bad() [L1551] int data; [L1552] data = 0 [L1553] EXPR rand() & 1 ? (((unsigned)rand()<<30) ^ ((unsigned)rand()<<15) ^ rand()) : -(((unsigned)rand()<<30) ^ ((unsigned)rand()<<15) ^ rand()) - 1 [L1553] EXPR rand() & 1 ? (((unsigned)rand()<<30) ^ ((unsigned)rand()<<15) ^ rand()) : -(((unsigned)rand()<<30) ^ ((unsigned)rand()<<15) ^ rand()) - 1 [L1553] data = ((int)(rand() & 1 ? (((unsigned)rand()<<30) ^ ((unsigned)rand()<<15) ^ rand()) : -(((unsigned)rand()<<30) ^ ((unsigned)rand()<<15) ^ rand()) - 1)) [L1554] CALL CWE191_Integer_Underflow__int_rand_predec_52b_badSink(data) [L1567] CALL CWE191_Integer_Underflow__int_rand_predec_52c_badSink(data) [L1572] --data VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(data)=-2147483648, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] - UnprovableResult [Line: 1572]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 12 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=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, 0.0s 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 21:00:48,031 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f9286ac-0244-4e1c-9020-916dff6c6676/bin/uautomizer-verify-bycVGegfSx/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 Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW)