./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fscanf_multiply_12_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20edf35d-75fa-4cce-a01a-06dbc23dc408/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20edf35d-75fa-4cce-a01a-06dbc23dc408/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20edf35d-75fa-4cce-a01a-06dbc23dc408/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20edf35d-75fa-4cce-a01a-06dbc23dc408/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fscanf_multiply_12_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20edf35d-75fa-4cce-a01a-06dbc23dc408/bin/utaipan-I9t0OCRTmS/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20edf35d-75fa-4cce-a01a-06dbc23dc408/bin/utaipan-I9t0OCRTmS --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 bf128c44aee8e0502caae6c09f006438d9623770944f1c88755bb8afb7a9d79b --- 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-8393723 [2022-11-19 07:07:55,615 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:07:55,618 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:07:55,645 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:07:55,646 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:07:55,647 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:07:55,649 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:07:55,651 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:07:55,654 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:07:55,655 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:07:55,656 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:07:55,658 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:07:55,659 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:07:55,660 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:07:55,661 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:07:55,663 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:07:55,664 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:07:55,665 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:07:55,668 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:07:55,670 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:07:55,672 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:07:55,674 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:07:55,676 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:07:55,677 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:07:55,682 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:07:55,682 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:07:55,683 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:07:55,684 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:07:55,685 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:07:55,686 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:07:55,687 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:07:55,688 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:07:55,689 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:07:55,690 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:07:55,691 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:07:55,692 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:07:55,693 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:07:55,693 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:07:55,693 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:07:55,695 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:07:55,696 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:07:55,697 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20edf35d-75fa-4cce-a01a-06dbc23dc408/bin/utaipan-I9t0OCRTmS/config/svcomp-Overflow-64bit-Taipan_Default.epf [2022-11-19 07:07:55,726 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:07:55,727 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:07:55,727 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:07:55,728 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:07:55,729 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:07:55,729 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:07:55,729 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:07:55,729 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:07:55,730 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:07:55,730 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 07:07:55,730 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:07:55,731 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:07:55,731 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 07:07:55,731 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 07:07:55,731 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:07:55,732 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 07:07:55,732 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 07:07:55,732 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 07:07:55,733 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:07:55,733 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-19 07:07:55,734 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 07:07:55,734 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:07:55,734 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:07:55,734 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:07:55,735 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:07:55,735 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-19 07:07:55,735 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:07:55,735 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:07:55,736 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:07:55,736 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:07:55,736 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:07:55,737 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:07:55,737 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:07:55,737 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 07:07:55,738 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:07:55,738 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:07:55,738 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 07:07:55,738 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 07:07:55,739 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:07:55,739 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:07:55,739 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_20edf35d-75fa-4cce-a01a-06dbc23dc408/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20edf35d-75fa-4cce-a01a-06dbc23dc408/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bf128c44aee8e0502caae6c09f006438d9623770944f1c88755bb8afb7a9d79b [2022-11-19 07:07:56,077 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:07:56,119 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:07:56,123 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:07:56,124 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:07:56,125 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:07:56,127 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20edf35d-75fa-4cce-a01a-06dbc23dc408/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fscanf_multiply_12_bad.i [2022-11-19 07:07:56,227 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20edf35d-75fa-4cce-a01a-06dbc23dc408/bin/utaipan-I9t0OCRTmS/data/d511b1e6e/59b4a42b92d943af9166900de93cb94c/FLAG612173a83 [2022-11-19 07:07:57,072 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:07:57,073 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20edf35d-75fa-4cce-a01a-06dbc23dc408/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fscanf_multiply_12_bad.i [2022-11-19 07:07:57,123 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20edf35d-75fa-4cce-a01a-06dbc23dc408/bin/utaipan-I9t0OCRTmS/data/d511b1e6e/59b4a42b92d943af9166900de93cb94c/FLAG612173a83 [2022-11-19 07:07:57,202 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20edf35d-75fa-4cce-a01a-06dbc23dc408/bin/utaipan-I9t0OCRTmS/data/d511b1e6e/59b4a42b92d943af9166900de93cb94c [2022-11-19 07:07:57,217 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:07:57,218 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:07:57,221 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:07:57,221 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:07:57,226 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:07:57,227 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:07:57" (1/1) ... [2022-11-19 07:07:57,229 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24600ce9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:07:57, skipping insertion in model container [2022-11-19 07:07:57,232 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:07:57" (1/1) ... [2022-11-19 07:07:57,243 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:07:57,341 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:07:57,865 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-19 07:07:58,745 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:07:58,758 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:07:58,798 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-19 07:07:58,887 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:07:59,046 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:07:59,046 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:07:59 WrapperNode [2022-11-19 07:07:59,047 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:07:59,048 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:07:59,048 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:07:59,048 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:07:59,057 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:07:59" (1/1) ... [2022-11-19 07:07:59,085 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:07:59" (1/1) ... [2022-11-19 07:07:59,117 INFO L138 Inliner]: procedures = 499, calls = 69, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 71 [2022-11-19 07:07:59,118 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:07:59,118 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:07:59,119 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:07:59,119 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:07:59,132 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:07:59" (1/1) ... [2022-11-19 07:07:59,133 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:07:59" (1/1) ... [2022-11-19 07:07:59,151 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:07:59" (1/1) ... [2022-11-19 07:07:59,152 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:07:59" (1/1) ... [2022-11-19 07:07:59,159 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:07:59" (1/1) ... [2022-11-19 07:07:59,168 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:07:59" (1/1) ... [2022-11-19 07:07:59,184 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:07:59" (1/1) ... [2022-11-19 07:07:59,185 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:07:59" (1/1) ... [2022-11-19 07:07:59,189 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:07:59,190 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:07:59,190 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:07:59,190 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:07:59,191 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:07:59" (1/1) ... [2022-11-19 07:07:59,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:07:59,224 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20edf35d-75fa-4cce-a01a-06dbc23dc408/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:07:59,240 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20edf35d-75fa-4cce-a01a-06dbc23dc408/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:07:59,267 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20edf35d-75fa-4cce-a01a-06dbc23dc408/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:07:59,317 INFO L130 BoogieDeclarations]: Found specification of procedure printIntLine [2022-11-19 07:07:59,318 INFO L138 BoogieDeclarations]: Found implementation of procedure printIntLine [2022-11-19 07:07:59,318 INFO L130 BoogieDeclarations]: Found specification of procedure globalReturnsTrueOrFalse [2022-11-19 07:07:59,318 INFO L138 BoogieDeclarations]: Found implementation of procedure globalReturnsTrueOrFalse [2022-11-19 07:07:59,318 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-11-19 07:07:59,319 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-11-19 07:07:59,319 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 07:07:59,319 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 07:07:59,319 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 07:07:59,320 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:07:59,320 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:07:59,320 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 07:07:59,320 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-11-19 07:07:59,321 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 07:07:59,321 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 07:07:59,584 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:07:59,586 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:07:59,776 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:07:59,826 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:07:59,826 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-19 07:07:59,829 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:07:59 BoogieIcfgContainer [2022-11-19 07:07:59,830 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:07:59,832 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:07:59,832 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:07:59,838 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:07:59,839 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:07:57" (1/3) ... [2022-11-19 07:07:59,840 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7340f0e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:07:59, skipping insertion in model container [2022-11-19 07:07:59,841 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:07:59" (2/3) ... [2022-11-19 07:07:59,841 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7340f0e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:07:59, skipping insertion in model container [2022-11-19 07:07:59,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:07:59" (3/3) ... [2022-11-19 07:07:59,843 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fscanf_multiply_12_bad.i [2022-11-19 07:07:59,861 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:07:59,861 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-11-19 07:07:59,938 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:07:59,946 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;@19aef721, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:07:59,946 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-19 07:07:59,952 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 24 states have internal predecessors, (25), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 5 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-19 07:07:59,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-19 07:07:59,962 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:07:59,963 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:07:59,964 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-19 07:07:59,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:07:59,970 INFO L85 PathProgramCache]: Analyzing trace with hash -992565811, now seen corresponding path program 1 times [2022-11-19 07:07:59,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:07:59,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709282678] [2022-11-19 07:07:59,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:07:59,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:08:00,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:08:00,460 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 07:08:00,460 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:08:00,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709282678] [2022-11-19 07:08:00,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709282678] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:08:00,462 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:08:00,462 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:08:00,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888035649] [2022-11-19 07:08:00,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:08:00,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:08:00,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:08:00,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:08:00,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:08:00,530 INFO L87 Difference]: Start difference. First operand has 32 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 24 states have internal predecessors, (25), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 5 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-19 07:08:00,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:08:00,683 INFO L93 Difference]: Finished difference Result 32 states and 39 transitions. [2022-11-19 07:08:00,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:08:00,686 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 16 [2022-11-19 07:08:00,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:08:00,700 INFO L225 Difference]: With dead ends: 32 [2022-11-19 07:08:00,707 INFO L226 Difference]: Without dead ends: 22 [2022-11-19 07:08:00,713 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:08:00,718 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 2 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:08:00,721 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 72 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:08:00,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-11-19 07:08:00,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-11-19 07:08:00,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 16 states have internal predecessors, (16), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-19 07:08:00,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2022-11-19 07:08:00,774 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 16 [2022-11-19 07:08:00,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:08:00,777 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2022-11-19 07:08:00,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-19 07:08:00,777 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2022-11-19 07:08:00,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-19 07:08:00,780 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:08:00,780 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:08:00,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 07:08:00,781 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-19 07:08:00,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:08:00,783 INFO L85 PathProgramCache]: Analyzing trace with hash -704368779, now seen corresponding path program 1 times [2022-11-19 07:08:00,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:08:00,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940063695] [2022-11-19 07:08:00,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:08:00,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:08:00,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:08:01,102 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 07:08:01,123 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:08:01,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940063695] [2022-11-19 07:08:01,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940063695] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:08:01,124 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:08:01,124 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:08:01,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75074655] [2022-11-19 07:08:01,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:08:01,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:08:01,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:08:01,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:08:01,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:08:01,128 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-19 07:08:01,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:08:01,196 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2022-11-19 07:08:01,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:08:01,197 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 17 [2022-11-19 07:08:01,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:08:01,198 INFO L225 Difference]: With dead ends: 22 [2022-11-19 07:08:01,198 INFO L226 Difference]: Without dead ends: 21 [2022-11-19 07:08:01,199 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-19 07:08:01,201 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 5 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:08:01,201 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 43 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:08:01,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-11-19 07:08:01,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2022-11-19 07:08:01,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 15 states have internal predecessors, (15), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-19 07:08:01,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2022-11-19 07:08:01,208 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 17 [2022-11-19 07:08:01,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:08:01,208 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2022-11-19 07:08:01,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-19 07:08:01,209 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2022-11-19 07:08:01,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-19 07:08:01,210 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:08:01,210 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:08:01,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 07:08:01,211 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-19 07:08:01,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:08:01,212 INFO L85 PathProgramCache]: Analyzing trace with hash -704769003, now seen corresponding path program 1 times [2022-11-19 07:08:01,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:08:01,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414275078] [2022-11-19 07:08:01,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:08:01,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:08:01,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 07:08:01,262 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-19 07:08:01,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 07:08:01,349 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-19 07:08:01,350 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-19 07:08:01,351 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 4 remaining) [2022-11-19 07:08:01,354 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 4 remaining) [2022-11-19 07:08:01,357 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 4 remaining) [2022-11-19 07:08:01,357 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 4 remaining) [2022-11-19 07:08:01,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 07:08:01,362 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-19 07:08:01,368 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-19 07:08:01,436 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 07:08:01 BoogieIcfgContainer [2022-11-19 07:08:01,446 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-19 07:08:01,447 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-19 07:08:01,448 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-19 07:08:01,448 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-19 07:08:01,449 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:07:59" (3/4) ... [2022-11-19 07:08:01,451 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-19 07:08:01,531 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20edf35d-75fa-4cce-a01a-06dbc23dc408/bin/utaipan-I9t0OCRTmS/witness.graphml [2022-11-19 07:08:01,538 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-19 07:08:01,540 INFO L158 Benchmark]: Toolchain (without parser) took 4320.82ms. Allocated memory was 125.8MB in the beginning and 188.7MB in the end (delta: 62.9MB). Free memory was 87.0MB in the beginning and 142.5MB in the end (delta: -55.5MB). Peak memory consumption was 7.4MB. Max. memory is 16.1GB. [2022-11-19 07:08:01,540 INFO L158 Benchmark]: CDTParser took 1.10ms. Allocated memory is still 125.8MB. Free memory was 96.1MB in the beginning and 96.1MB in the end (delta: 25.3kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 07:08:01,542 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1826.65ms. Allocated memory is still 125.8MB. Free memory was 87.0MB in the beginning and 49.2MB in the end (delta: 37.8MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. [2022-11-19 07:08:01,543 INFO L158 Benchmark]: Boogie Procedure Inliner took 69.90ms. Allocated memory is still 125.8MB. Free memory was 49.2MB in the beginning and 46.4MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-19 07:08:01,543 INFO L158 Benchmark]: Boogie Preprocessor took 70.39ms. Allocated memory is still 125.8MB. Free memory was 46.4MB in the beginning and 45.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 07:08:01,543 INFO L158 Benchmark]: RCFGBuilder took 640.43ms. Allocated memory is still 125.8MB. Free memory was 45.0MB in the beginning and 88.7MB in the end (delta: -43.7MB). Peak memory consumption was 8.5MB. Max. memory is 16.1GB. [2022-11-19 07:08:01,544 INFO L158 Benchmark]: TraceAbstraction took 1613.99ms. Allocated memory was 125.8MB in the beginning and 188.7MB in the end (delta: 62.9MB). Free memory was 87.9MB in the beginning and 144.6MB in the end (delta: -56.8MB). Peak memory consumption was 6.9MB. Max. memory is 16.1GB. [2022-11-19 07:08:01,545 INFO L158 Benchmark]: Witness Printer took 91.56ms. Allocated memory is still 188.7MB. Free memory was 144.6MB in the beginning and 142.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 07:08:01,547 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.10ms. Allocated memory is still 125.8MB. Free memory was 96.1MB in the beginning and 96.1MB in the end (delta: 25.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1826.65ms. Allocated memory is still 125.8MB. Free memory was 87.0MB in the beginning and 49.2MB in the end (delta: 37.8MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 69.90ms. Allocated memory is still 125.8MB. Free memory was 49.2MB in the beginning and 46.4MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 70.39ms. Allocated memory is still 125.8MB. Free memory was 46.4MB in the beginning and 45.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 640.43ms. Allocated memory is still 125.8MB. Free memory was 45.0MB in the beginning and 88.7MB in the end (delta: -43.7MB). Peak memory consumption was 8.5MB. Max. memory is 16.1GB. * TraceAbstraction took 1613.99ms. Allocated memory was 125.8MB in the beginning and 188.7MB in the end (delta: 62.9MB). Free memory was 87.9MB in the beginning and 144.6MB in the end (delta: -56.8MB). Peak memory consumption was 6.9MB. Max. memory is 16.1GB. * Witness Printer took 91.56ms. Allocated memory is still 188.7MB. Free memory was 144.6MB in the beginning and 142.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 1564]: integer overflow possible integer overflow possible We found a FailurePath: [L1525] int globalTrue = 1; [L1547] char** globalArgv = ((void *)0); [L1526] int globalFalse = 0; [L1523] const int GLOBAL_CONST_FALSE = 0; [L1524] const int GLOBAL_CONST_FIVE = 5; [L1546] int globalArgc = 0; [L1522] const int GLOBAL_CONST_TRUE = 1; [L1527] int globalFive = 5; [L1587] CALL printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, line={3:0}] [L1414] COND TRUE line != ((void *)0) [L1587] RET printLine("Calling bad()...") VAL [\old(argc)=1073741828, argc=1073741828, argv={1073741830:1073741829}, 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] [L1588] CALL CWE191_Integer_Underflow__int_fscanf_multiply_12_bad() [L1550] int data; [L1551] data = 0 VAL [data={5:0}, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1552] CALL globalReturnsTrueOrFalse() VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1520] return (rand() % 2); [L1552] RET globalReturnsTrueOrFalse() VAL [data={5:0}, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalReturnsTrueOrFalse()=1, globalTrue=1] [L1552] COND TRUE globalReturnsTrueOrFalse() [L1560] CALL globalReturnsTrueOrFalse() VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1520] return (rand() % 2); [L1560] RET globalReturnsTrueOrFalse() VAL [data={5:0}, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalReturnsTrueOrFalse()=1, globalTrue=1] [L1560] COND TRUE globalReturnsTrueOrFalse() [L1562] EXPR \read(data) VAL [\read(data)=-1073741825, data={5:0}, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1562] COND TRUE data < 0 [L1564] EXPR \read(data) VAL [\read(data)=-1073741825, data={5:0}, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1564] data * 2 VAL [\read(data)=-1073741825, data={5:0}, 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: 1564]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 1574]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 1574]: 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 4 procedures, 32 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 1.5s, OverallIterations: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 7 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 7 mSDsluCounter, 115 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 76 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 71 IncrementalHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 39 mSDtfsCounter, 71 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=0, InterpolantAutomatonStates: 9, 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 50 NumberOfCodeBlocks, 50 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 31 ConstructedInterpolants, 0 QuantifiedInterpolants, 59 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 4/4 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-11-19 07:08:01,583 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20edf35d-75fa-4cce-a01a-06dbc23dc408/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW)