./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_02_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4e7fbc69 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_af7131ec-0cd2-4333-9925-84b2716d38d6/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af7131ec-0cd2-4333-9925-84b2716d38d6/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af7131ec-0cd2-4333-9925-84b2716d38d6/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af7131ec-0cd2-4333-9925-84b2716d38d6/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_02_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af7131ec-0cd2-4333-9925-84b2716d38d6/bin/utaipan-Q6hlc19bkW/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af7131ec-0cd2-4333-9925-84b2716d38d6/bin/utaipan-Q6hlc19bkW --witnessprinter.witness.filename witness.graphml --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 55294aa515a3750037e10b6a6b4a932c4177a2d1acd3b1dec26b13e3528f0134 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-4e7fbc6 [2022-11-23 14:59:41,754 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 14:59:41,757 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 14:59:41,799 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 14:59:41,799 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 14:59:41,803 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 14:59:41,805 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 14:59:41,826 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 14:59:41,828 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 14:59:41,834 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 14:59:41,835 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 14:59:41,837 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 14:59:41,838 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 14:59:41,840 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 14:59:41,842 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 14:59:41,844 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 14:59:41,846 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 14:59:41,847 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 14:59:41,849 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 14:59:41,855 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 14:59:41,857 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 14:59:41,859 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 14:59:41,861 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 14:59:41,868 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 14:59:41,879 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 14:59:41,879 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 14:59:41,879 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 14:59:41,881 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 14:59:41,882 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 14:59:41,883 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 14:59:41,883 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 14:59:41,884 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 14:59:41,887 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 14:59:41,889 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 14:59:41,890 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 14:59:41,891 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 14:59:41,891 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 14:59:41,892 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 14:59:41,892 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 14:59:41,893 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 14:59:41,893 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 14:59:41,894 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af7131ec-0cd2-4333-9925-84b2716d38d6/bin/utaipan-Q6hlc19bkW/config/svcomp-Overflow-64bit-Taipan_Default.epf [2022-11-23 14:59:41,934 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 14:59:41,935 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 14:59:41,936 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 14:59:41,936 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 14:59:41,937 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 14:59:41,937 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 14:59:41,937 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 14:59:41,937 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 14:59:41,938 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 14:59:41,938 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 14:59:41,939 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 14:59:41,939 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 14:59:41,939 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 14:59:41,940 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 14:59:41,940 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 14:59:41,940 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 14:59:41,940 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 14:59:41,940 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 14:59:41,942 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 14:59:41,943 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-23 14:59:41,944 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 14:59:41,947 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 14:59:41,947 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 14:59:41,947 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 14:59:41,947 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 14:59:41,947 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-23 14:59:41,948 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 14:59:41,948 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 14:59:41,948 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 14:59:41,948 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 14:59:41,948 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 14:59:41,949 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:59:41,949 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 14:59:41,949 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 14:59:41,949 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 14:59:41,949 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 14:59:41,950 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 14:59:41,950 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 14:59:41,950 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 14:59:41,950 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 14:59:41,950 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_af7131ec-0cd2-4333-9925-84b2716d38d6/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af7131ec-0cd2-4333-9925-84b2716d38d6/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 55294aa515a3750037e10b6a6b4a932c4177a2d1acd3b1dec26b13e3528f0134 [2022-11-23 14:59:42,267 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 14:59:42,298 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 14:59:42,301 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 14:59:42,302 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 14:59:42,303 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 14:59:42,304 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af7131ec-0cd2-4333-9925-84b2716d38d6/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_02_bad.i [2022-11-23 14:59:45,317 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 14:59:45,779 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 14:59:45,780 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af7131ec-0cd2-4333-9925-84b2716d38d6/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_02_bad.i [2022-11-23 14:59:45,805 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af7131ec-0cd2-4333-9925-84b2716d38d6/bin/utaipan-Q6hlc19bkW/data/74bb5891c/169a44fbd19945bdbe213cae42912433/FLAG2616bc062 [2022-11-23 14:59:45,823 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af7131ec-0cd2-4333-9925-84b2716d38d6/bin/utaipan-Q6hlc19bkW/data/74bb5891c/169a44fbd19945bdbe213cae42912433 [2022-11-23 14:59:45,826 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 14:59:45,829 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 14:59:45,832 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 14:59:45,833 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 14:59:45,837 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 14:59:45,838 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:59:45" (1/1) ... [2022-11-23 14:59:45,839 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cc0800 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:59:45, skipping insertion in model container [2022-11-23 14:59:45,840 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:59:45" (1/1) ... [2022-11-23 14:59:45,848 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 14:59:45,904 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 14:59:46,303 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-23 14:59:46,955 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:59:46,969 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 14:59:46,989 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-23 14:59:47,086 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:59:47,208 INFO L208 MainTranslator]: Completed translation [2022-11-23 14:59:47,209 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:59:47 WrapperNode [2022-11-23 14:59:47,209 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 14:59:47,210 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 14:59:47,210 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 14:59:47,210 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 14:59:47,218 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:59:47" (1/1) ... [2022-11-23 14:59:47,257 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:59:47" (1/1) ... [2022-11-23 14:59:47,281 INFO L138 Inliner]: procedures = 500, calls = 62, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 54 [2022-11-23 14:59:47,281 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 14:59:47,282 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 14:59:47,282 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 14:59:47,282 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 14:59:47,291 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:59:47" (1/1) ... [2022-11-23 14:59:47,292 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:59:47" (1/1) ... [2022-11-23 14:59:47,295 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:59:47" (1/1) ... [2022-11-23 14:59:47,295 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:59:47" (1/1) ... [2022-11-23 14:59:47,300 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:59:47" (1/1) ... [2022-11-23 14:59:47,302 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:59:47" (1/1) ... [2022-11-23 14:59:47,304 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:59:47" (1/1) ... [2022-11-23 14:59:47,305 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:59:47" (1/1) ... [2022-11-23 14:59:47,318 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 14:59:47,318 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 14:59:47,319 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 14:59:47,319 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 14:59:47,320 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:59:47" (1/1) ... [2022-11-23 14:59:47,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:59:47,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af7131ec-0cd2-4333-9925-84b2716d38d6/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:59:47,376 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af7131ec-0cd2-4333-9925-84b2716d38d6/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 14:59:47,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af7131ec-0cd2-4333-9925-84b2716d38d6/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 14:59:47,418 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-11-23 14:59:47,418 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-11-23 14:59:47,418 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-11-23 14:59:47,418 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 14:59:47,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-23 14:59:47,419 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 14:59:47,419 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 14:59:47,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 14:59:47,420 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 14:59:47,420 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-11-23 14:59:47,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 14:59:47,621 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 14:59:47,623 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 14:59:47,794 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 14:59:47,864 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 14:59:47,871 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-23 14:59:47,873 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:59:47 BoogieIcfgContainer [2022-11-23 14:59:47,873 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 14:59:47,876 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 14:59:47,876 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 14:59:47,879 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 14:59:47,879 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:59:45" (1/3) ... [2022-11-23 14:59:47,881 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72d67b6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:59:47, skipping insertion in model container [2022-11-23 14:59:47,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:59:47" (2/3) ... [2022-11-23 14:59:47,883 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72d67b6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:59:47, skipping insertion in model container [2022-11-23 14:59:47,883 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:59:47" (3/3) ... [2022-11-23 14:59:47,885 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_multiply_02_bad.i [2022-11-23 14:59:47,909 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 14:59:47,909 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-23 14:59:48,014 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 14:59:48,023 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=LoopsAndPotentialCycles, 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;@44fb2824, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 14:59:48,023 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-23 14:59:48,027 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 14 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-23 14:59:48,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-23 14:59:48,038 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:59:48,039 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:59:48,039 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-23 14:59:48,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:59:48,049 INFO L85 PathProgramCache]: Analyzing trace with hash -555669604, now seen corresponding path program 1 times [2022-11-23 14:59:48,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:59:48,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40561783] [2022-11-23 14:59:48,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:59:48,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:59:48,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:59:48,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:59:48,361 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:59:48,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40561783] [2022-11-23 14:59:48,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40561783] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:59:48,363 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:59:48,364 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 14:59:48,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901956004] [2022-11-23 14:59:48,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:59:48,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-23 14:59:48,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:59:48,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-23 14:59:48,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 14:59:48,437 INFO L87 Difference]: Start difference. First operand has 18 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 14 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 14:59:48,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:59:48,498 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2022-11-23 14:59:48,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-23 14:59:48,501 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 8 [2022-11-23 14:59:48,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:59:48,510 INFO L225 Difference]: With dead ends: 29 [2022-11-23 14:59:48,511 INFO L226 Difference]: Without dead ends: 14 [2022-11-23 14:59:48,515 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 14:59:48,522 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 14:59:48,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 16 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 14:59:48,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-11-23 14:59:48,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-11-23 14:59:48,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 11 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-23 14:59:48,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2022-11-23 14:59:48,570 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 8 [2022-11-23 14:59:48,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:59:48,572 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2022-11-23 14:59:48,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 14:59:48,572 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2022-11-23 14:59:48,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-23 14:59:48,574 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:59:48,574 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:59:48,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 14:59:48,575 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-23 14:59:48,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:59:48,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1432174889, now seen corresponding path program 1 times [2022-11-23 14:59:48,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:59:48,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118113658] [2022-11-23 14:59:48,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:59:48,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:59:48,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 14:59:48,643 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-23 14:59:48,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 14:59:48,722 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-23 14:59:48,722 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-23 14:59:48,724 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-11-23 14:59:48,727 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-11-23 14:59:48,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 14:59:48,735 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-23 14:59:48,738 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 14:59:48,788 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 02:59:48 BoogieIcfgContainer [2022-11-23 14:59:48,789 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 14:59:48,789 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 14:59:48,789 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 14:59:48,790 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 14:59:48,790 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:59:47" (3/4) ... [2022-11-23 14:59:48,794 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-23 14:59:48,794 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 14:59:48,795 INFO L158 Benchmark]: Toolchain (without parser) took 2966.04ms. Allocated memory was 169.9MB in the beginning and 205.5MB in the end (delta: 35.7MB). Free memory was 134.2MB in the beginning and 148.1MB in the end (delta: -13.9MB). Peak memory consumption was 22.3MB. Max. memory is 16.1GB. [2022-11-23 14:59:48,795 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 127.9MB. Free memory was 95.6MB in the beginning and 95.6MB in the end (delta: 73.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 14:59:48,801 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1377.21ms. Allocated memory is still 169.9MB. Free memory was 134.2MB in the beginning and 86.1MB in the end (delta: 48.1MB). Peak memory consumption was 48.2MB. Max. memory is 16.1GB. [2022-11-23 14:59:48,802 INFO L158 Benchmark]: Boogie Procedure Inliner took 71.83ms. Allocated memory is still 169.9MB. Free memory was 86.1MB in the beginning and 83.3MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-23 14:59:48,807 INFO L158 Benchmark]: Boogie Preprocessor took 35.66ms. Allocated memory is still 169.9MB. Free memory was 83.3MB in the beginning and 81.9MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 14:59:48,809 INFO L158 Benchmark]: RCFGBuilder took 555.14ms. Allocated memory is still 169.9MB. Free memory was 81.9MB in the beginning and 67.2MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-23 14:59:48,809 INFO L158 Benchmark]: TraceAbstraction took 912.88ms. Allocated memory was 169.9MB in the beginning and 205.5MB in the end (delta: 35.7MB). Free memory was 66.5MB in the beginning and 148.1MB in the end (delta: -81.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 14:59:48,809 INFO L158 Benchmark]: Witness Printer took 4.97ms. Allocated memory is still 205.5MB. Free memory is still 148.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 14:59:48,813 INFO L339 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 127.9MB. Free memory was 95.6MB in the beginning and 95.6MB in the end (delta: 73.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1377.21ms. Allocated memory is still 169.9MB. Free memory was 134.2MB in the beginning and 86.1MB in the end (delta: 48.1MB). Peak memory consumption was 48.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 71.83ms. Allocated memory is still 169.9MB. Free memory was 86.1MB in the beginning and 83.3MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 35.66ms. Allocated memory is still 169.9MB. Free memory was 83.3MB in the beginning and 81.9MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 555.14ms. Allocated memory is still 169.9MB. Free memory was 81.9MB in the beginning and 67.2MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 912.88ms. Allocated memory was 169.9MB in the beginning and 205.5MB in the end (delta: 35.7MB). Free memory was 66.5MB in the beginning and 148.1MB in the end (delta: -81.6MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.97ms. Allocated memory is still 205.5MB. Free memory is still 148.1MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - 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: 1570]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi 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); [L1578] CALL printLine("Calling bad()...") VAL [#in~line={4:0}, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1414] COND TRUE line != ((void *)0) [L1578] RET printLine("Calling bad()...") VAL [#in~argv={1073741830:1073741829}, argc=1073741826, argv={1073741830:1073741829}, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, unknown-#in~argc-unknown=1073741826] [L1579] CALL CWE191_Integer_Underflow__int_fgets_multiply_02_bad() [L1550] int data; [L1551] data = 0 VAL [data=0, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1555] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1556] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1558] data = atoi(inputBuffer) [L1555] char inputBuffer[(3 * sizeof(data) + 2)] = ""; VAL [data=-1073741825, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1568] COND TRUE data < 0 VAL [data=-1073741825, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1570] data * 2 VAL [data=-1073741825, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] - UnprovableResult [Line: 1570]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 18 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 16 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5 IncrementalHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 16 mSDtfsCounter, 5 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 7 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-23 14:59:48,835 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af7131ec-0cd2-4333-9925-84b2716d38d6/bin/utaipan-Q6hlc19bkW/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_af7131ec-0cd2-4333-9925-84b2716d38d6/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af7131ec-0cd2-4333-9925-84b2716d38d6/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af7131ec-0cd2-4333-9925-84b2716d38d6/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af7131ec-0cd2-4333-9925-84b2716d38d6/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_02_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af7131ec-0cd2-4333-9925-84b2716d38d6/bin/utaipan-Q6hlc19bkW/config/svcomp-Overflow-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af7131ec-0cd2-4333-9925-84b2716d38d6/bin/utaipan-Q6hlc19bkW --witnessprinter.witness.filename witness.graphml --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 55294aa515a3750037e10b6a6b4a932c4177a2d1acd3b1dec26b13e3528f0134 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-4e7fbc6 [2022-11-23 14:59:51,531 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 14:59:51,533 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 14:59:51,555 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 14:59:51,556 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 14:59:51,557 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 14:59:51,558 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 14:59:51,560 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 14:59:51,562 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 14:59:51,563 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 14:59:51,564 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 14:59:51,565 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 14:59:51,565 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 14:59:51,569 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 14:59:51,571 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 14:59:51,572 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 14:59:51,576 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 14:59:51,577 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 14:59:51,578 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 14:59:51,583 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 14:59:51,588 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 14:59:51,589 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 14:59:51,593 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 14:59:51,598 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 14:59:51,601 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 14:59:51,606 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 14:59:51,606 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 14:59:51,607 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 14:59:51,608 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 14:59:51,609 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 14:59:51,610 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 14:59:51,611 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 14:59:51,613 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 14:59:51,614 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 14:59:51,632 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 14:59:51,633 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 14:59:51,634 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 14:59:51,634 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 14:59:51,635 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 14:59:51,636 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 14:59:51,637 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 14:59:51,638 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af7131ec-0cd2-4333-9925-84b2716d38d6/bin/utaipan-Q6hlc19bkW/config/svcomp-Overflow-64bit-Taipan_Bitvector.epf [2022-11-23 14:59:51,684 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 14:59:51,685 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 14:59:51,687 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 14:59:51,687 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 14:59:51,688 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 14:59:51,689 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 14:59:51,689 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 14:59:51,689 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 14:59:51,690 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 14:59:51,690 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 14:59:51,691 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 14:59:51,691 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 14:59:51,692 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 14:59:51,693 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-23 14:59:51,693 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 14:59:51,693 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 14:59:51,694 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 14:59:51,694 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 14:59:51,694 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-23 14:59:51,694 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-23 14:59:51,695 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-23 14:59:51,695 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-23 14:59:51,695 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 14:59:51,696 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 14:59:51,696 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 14:59:51,696 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 14:59:51,696 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 14:59:51,697 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 14:59:51,697 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:59:51,697 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 14:59:51,697 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 14:59:51,698 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 14:59:51,698 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-23 14:59:51,698 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-23 14:59:51,699 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 14:59:51,699 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 14:59:51,699 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 14:59:51,699 INFO L138 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_af7131ec-0cd2-4333-9925-84b2716d38d6/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af7131ec-0cd2-4333-9925-84b2716d38d6/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 55294aa515a3750037e10b6a6b4a932c4177a2d1acd3b1dec26b13e3528f0134 [2022-11-23 14:59:52,090 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 14:59:52,118 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 14:59:52,122 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 14:59:52,124 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 14:59:52,127 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 14:59:52,129 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af7131ec-0cd2-4333-9925-84b2716d38d6/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_02_bad.i [2022-11-23 14:59:55,291 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 14:59:55,693 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 14:59:55,693 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af7131ec-0cd2-4333-9925-84b2716d38d6/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_02_bad.i [2022-11-23 14:59:55,754 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af7131ec-0cd2-4333-9925-84b2716d38d6/bin/utaipan-Q6hlc19bkW/data/16357b78a/09b8881e3a2b41b7b261f8e43bd7c907/FLAG6fec079f1 [2022-11-23 14:59:55,773 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af7131ec-0cd2-4333-9925-84b2716d38d6/bin/utaipan-Q6hlc19bkW/data/16357b78a/09b8881e3a2b41b7b261f8e43bd7c907 [2022-11-23 14:59:55,777 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 14:59:55,780 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 14:59:55,784 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 14:59:55,784 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 14:59:55,788 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 14:59:55,789 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:59:55" (1/1) ... [2022-11-23 14:59:55,791 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@253710c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:59:55, skipping insertion in model container [2022-11-23 14:59:55,791 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:59:55" (1/1) ... [2022-11-23 14:59:55,798 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 14:59:55,868 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 14:59:56,398 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-23 14:59:57,192 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:59:57,228 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 14:59:57,247 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-23 14:59:57,321 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:59:57,520 INFO L208 MainTranslator]: Completed translation [2022-11-23 14:59:57,521 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:59:57 WrapperNode [2022-11-23 14:59:57,521 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 14:59:57,522 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 14:59:57,523 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 14:59:57,523 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 14:59:57,530 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:59:57" (1/1) ... [2022-11-23 14:59:57,576 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:59:57" (1/1) ... [2022-11-23 14:59:57,613 INFO L138 Inliner]: procedures = 505, calls = 62, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 53 [2022-11-23 14:59:57,614 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 14:59:57,616 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 14:59:57,616 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 14:59:57,616 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 14:59:57,626 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:59:57" (1/1) ... [2022-11-23 14:59:57,626 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:59:57" (1/1) ... [2022-11-23 14:59:57,645 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:59:57" (1/1) ... [2022-11-23 14:59:57,646 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:59:57" (1/1) ... [2022-11-23 14:59:57,659 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:59:57" (1/1) ... [2022-11-23 14:59:57,668 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:59:57" (1/1) ... [2022-11-23 14:59:57,671 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:59:57" (1/1) ... [2022-11-23 14:59:57,675 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:59:57" (1/1) ... [2022-11-23 14:59:57,679 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 14:59:57,687 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 14:59:57,687 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 14:59:57,687 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 14:59:57,688 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:59:57" (1/1) ... [2022-11-23 14:59:57,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:59:57,715 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af7131ec-0cd2-4333-9925-84b2716d38d6/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:59:57,732 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af7131ec-0cd2-4333-9925-84b2716d38d6/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 14:59:57,753 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af7131ec-0cd2-4333-9925-84b2716d38d6/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 14:59:57,784 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-11-23 14:59:57,785 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-11-23 14:59:57,785 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-11-23 14:59:57,787 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 14:59:57,787 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-23 14:59:57,787 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 14:59:57,787 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 14:59:57,788 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 14:59:57,788 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 14:59:57,788 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-11-23 14:59:57,788 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-11-23 14:59:57,994 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 14:59:58,009 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 14:59:58,150 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 14:59:58,156 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 14:59:58,156 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-23 14:59:58,158 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:59:58 BoogieIcfgContainer [2022-11-23 14:59:58,158 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 14:59:58,161 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 14:59:58,163 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 14:59:58,166 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 14:59:58,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:59:55" (1/3) ... [2022-11-23 14:59:58,167 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b3623d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:59:58, skipping insertion in model container [2022-11-23 14:59:58,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:59:57" (2/3) ... [2022-11-23 14:59:58,169 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b3623d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:59:58, skipping insertion in model container [2022-11-23 14:59:58,170 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:59:58" (3/3) ... [2022-11-23 14:59:58,171 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_multiply_02_bad.i [2022-11-23 14:59:58,191 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 14:59:58,191 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-23 14:59:58,255 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 14:59:58,262 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=LoopsAndPotentialCycles, 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;@5d25d9ec, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 14:59:58,263 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-23 14:59:58,268 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 17 states have (on average 1.411764705882353) internal successors, (24), 20 states have internal predecessors, (24), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-23 14:59:58,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-23 14:59:58,278 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:59:58,279 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:59:58,280 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-23 14:59:58,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:59:58,288 INFO L85 PathProgramCache]: Analyzing trace with hash -594774068, now seen corresponding path program 1 times [2022-11-23 14:59:58,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:59:58,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1810594684] [2022-11-23 14:59:58,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:59:58,309 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 [2022-11-23 14:59:58,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af7131ec-0cd2-4333-9925-84b2716d38d6/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:59:58,319 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af7131ec-0cd2-4333-9925-84b2716d38d6/bin/utaipan-Q6hlc19bkW/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) [2022-11-23 14:59:58,368 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af7131ec-0cd2-4333-9925-84b2716d38d6/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 14:59:58,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:59:58,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-23 14:59:58,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:59:58,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:59:58,544 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:59:58,545 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:59:58,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1810594684] [2022-11-23 14:59:58,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1810594684] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:59:58,548 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:59:58,548 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 14:59:58,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635829818] [2022-11-23 14:59:58,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:59:58,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-23 14:59:58,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:59:58,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-23 14:59:58,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 14:59:58,603 INFO L87 Difference]: Start difference. First operand has 24 states, 17 states have (on average 1.411764705882353) internal successors, (24), 20 states have internal predecessors, (24), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 14:59:58,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:59:58,628 INFO L93 Difference]: Finished difference Result 40 states and 48 transitions. [2022-11-23 14:59:58,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-23 14:59:58,631 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-11-23 14:59:58,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:59:58,638 INFO L225 Difference]: With dead ends: 40 [2022-11-23 14:59:58,638 INFO L226 Difference]: Without dead ends: 17 [2022-11-23 14:59:58,641 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 14:59:58,644 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 14:59:58,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 14:59:58,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-11-23 14:59:58,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-11-23 14:59:58,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 12 states have (on average 1.25) internal successors, (15), 14 states have internal predecessors, (15), 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) [2022-11-23 14:59:58,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2022-11-23 14:59:58,681 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 11 [2022-11-23 14:59:58,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:59:58,683 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2022-11-23 14:59:58,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 14:59:58,684 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2022-11-23 14:59:58,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-23 14:59:58,685 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:59:58,685 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:59:58,694 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af7131ec-0cd2-4333-9925-84b2716d38d6/bin/utaipan-Q6hlc19bkW/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)] Ended with exit code 0 [2022-11-23 14:59:58,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af7131ec-0cd2-4333-9925-84b2716d38d6/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 14:59:58,886 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-23 14:59:58,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:59:58,887 INFO L85 PathProgramCache]: Analyzing trace with hash -356859129, now seen corresponding path program 1 times [2022-11-23 14:59:58,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:59:58,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [122394080] [2022-11-23 14:59:58,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:59:58,888 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 [2022-11-23 14:59:58,889 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af7131ec-0cd2-4333-9925-84b2716d38d6/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:59:58,890 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af7131ec-0cd2-4333-9925-84b2716d38d6/bin/utaipan-Q6hlc19bkW/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) [2022-11-23 14:59:58,892 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af7131ec-0cd2-4333-9925-84b2716d38d6/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-23 14:59:58,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 14:59:58,998 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-23 14:59:59,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 14:59:59,063 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2022-11-23 14:59:59,064 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-23 14:59:59,065 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-11-23 14:59:59,067 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-11-23 14:59:59,083 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af7131ec-0cd2-4333-9925-84b2716d38d6/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-23 14:59:59,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af7131ec-0cd2-4333-9925-84b2716d38d6/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 14:59:59,272 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-23 14:59:59,275 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 14:59:59,303 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 02:59:59 BoogieIcfgContainer [2022-11-23 14:59:59,303 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 14:59:59,303 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 14:59:59,304 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 14:59:59,304 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 14:59:59,304 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:59:58" (3/4) ... [2022-11-23 14:59:59,308 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-23 14:59:59,308 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 14:59:59,311 INFO L158 Benchmark]: Toolchain (without parser) took 3529.65ms. Allocated memory is still 83.9MB. Free memory was 64.3MB in the beginning and 35.9MB in the end (delta: 28.4MB). Peak memory consumption was 29.1MB. Max. memory is 16.1GB. [2022-11-23 14:59:59,311 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 60.8MB. Free memory was 39.4MB in the beginning and 39.3MB in the end (delta: 44.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 14:59:59,313 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1737.57ms. Allocated memory is still 83.9MB. Free memory was 64.1MB in the beginning and 39.7MB in the end (delta: 24.4MB). Peak memory consumption was 31.3MB. Max. memory is 16.1GB. [2022-11-23 14:59:59,314 INFO L158 Benchmark]: Boogie Procedure Inliner took 91.97ms. Allocated memory is still 83.9MB. Free memory was 39.7MB in the beginning and 36.9MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 14:59:59,315 INFO L158 Benchmark]: Boogie Preprocessor took 64.49ms. Allocated memory is still 83.9MB. Free memory was 36.9MB in the beginning and 57.4MB in the end (delta: -20.5MB). Peak memory consumption was 4.4MB. Max. memory is 16.1GB. [2022-11-23 14:59:59,319 INFO L158 Benchmark]: RCFGBuilder took 471.71ms. Allocated memory is still 83.9MB. Free memory was 57.4MB in the beginning and 44.0MB in the end (delta: 13.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-23 14:59:59,319 INFO L158 Benchmark]: TraceAbstraction took 1142.32ms. Allocated memory is still 83.9MB. Free memory was 43.1MB in the beginning and 36.4MB in the end (delta: 6.7MB). Peak memory consumption was 5.9MB. Max. memory is 16.1GB. [2022-11-23 14:59:59,320 INFO L158 Benchmark]: Witness Printer took 5.19ms. Allocated memory is still 83.9MB. Free memory was 36.4MB in the beginning and 35.9MB in the end (delta: 464.7kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 14:59:59,327 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 60.8MB. Free memory was 39.4MB in the beginning and 39.3MB in the end (delta: 44.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1737.57ms. Allocated memory is still 83.9MB. Free memory was 64.1MB in the beginning and 39.7MB in the end (delta: 24.4MB). Peak memory consumption was 31.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 91.97ms. Allocated memory is still 83.9MB. Free memory was 39.7MB in the beginning and 36.9MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 64.49ms. Allocated memory is still 83.9MB. Free memory was 36.9MB in the beginning and 57.4MB in the end (delta: -20.5MB). Peak memory consumption was 4.4MB. Max. memory is 16.1GB. * RCFGBuilder took 471.71ms. Allocated memory is still 83.9MB. Free memory was 57.4MB in the beginning and 44.0MB in the end (delta: 13.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 1142.32ms. Allocated memory is still 83.9MB. Free memory was 43.1MB in the beginning and 36.4MB in the end (delta: 6.7MB). Peak memory consumption was 5.9MB. Max. memory is 16.1GB. * Witness Printer took 5.19ms. Allocated memory is still 83.9MB. Free memory was 36.4MB in the beginning and 35.9MB in the end (delta: 464.7kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - 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: 1570]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi 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); VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1578] CALL printLine("Calling bad()...") VAL [#in~line={4:0}, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1414] COND TRUE line != ((void *)0) [L1578] RET printLine("Calling bad()...") VAL [#in~argv={13:12}, argc=12, argv={13:12}, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, unknown-#in~argc-unknown=12] [L1579] CALL CWE191_Integer_Underflow__int_fgets_multiply_02_bad() [L1550] int data; [L1551] data = 0 VAL [data=0, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1555] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1556] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1558] data = atoi(inputBuffer) [L1555] char inputBuffer[(3 * sizeof(data) + 2)] = ""; VAL [data=-2147483648, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1568] COND TRUE data < 0 VAL [data=-2147483648, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1570] data * 2 VAL [data=-2147483648, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] - UnprovableResult [Line: 1570]: 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, 24 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 1.0s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 28 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 28 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 10 SizeOfPredicates, 0 NumberOfNonLiveVariables, 47 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-23 14:59:59,351 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af7131ec-0cd2-4333-9925-84b2716d38d6/bin/utaipan-Q6hlc19bkW/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 Result: UNKNOWN: Overapproximated counterexample