./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/bitvector/num_conversion_1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d52fc1a8-d4f7-4f75-a036-8a697d2df8df/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d52fc1a8-d4f7-4f75-a036-8a697d2df8df/bin/utaipan-9zjyvhn0QE/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d52fc1a8-d4f7-4f75-a036-8a697d2df8df/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d52fc1a8-d4f7-4f75-a036-8a697d2df8df/bin/utaipan-9zjyvhn0QE/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/num_conversion_1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d52fc1a8-d4f7-4f75-a036-8a697d2df8df/bin/utaipan-9zjyvhn0QE/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d52fc1a8-d4f7-4f75-a036-8a697d2df8df/bin/utaipan-9zjyvhn0QE --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 32bit --witnessprinter.graph.data.programhash eb940cb4e8580a7f29cd512663d7ddf095173e433385db93cb3bce78775a2871 ....................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis No suitable file found in config dir /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d52fc1a8-d4f7-4f75-a036-8a697d2df8df/bin/utaipan-9zjyvhn0QE/config using search string *Overflow*32bit*_Bitvector*.epf No suitable settings file found using Overflow*32bit*_Bitvector ERROR: UNSUPPORTED PROPERTY Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-24 10:08:02,385 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 10:08:02,389 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 10:08:02,436 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 10:08:02,437 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 10:08:02,438 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 10:08:02,440 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 10:08:02,442 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 10:08:02,444 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 10:08:02,445 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 10:08:02,447 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 10:08:02,448 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 10:08:02,449 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 10:08:02,450 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 10:08:02,452 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 10:08:02,453 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 10:08:02,454 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 10:08:02,456 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 10:08:02,458 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 10:08:02,460 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 10:08:02,462 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 10:08:02,465 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 10:08:02,467 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 10:08:02,469 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 10:08:02,473 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 10:08:02,479 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 10:08:02,480 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 10:08:02,481 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 10:08:02,483 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 10:08:02,484 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 10:08:02,485 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 10:08:02,486 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 10:08:02,488 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 10:08:02,490 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 10:08:02,491 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 10:08:02,492 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 10:08:02,493 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 10:08:02,493 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 10:08:02,493 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 10:08:02,494 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 10:08:02,495 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 10:08:02,496 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d52fc1a8-d4f7-4f75-a036-8a697d2df8df/bin/utaipan-9zjyvhn0QE/config/svcomp-Overflow-32bit-Taipan_Default.epf [2021-10-24 10:08:02,538 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 10:08:02,539 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 10:08:02,540 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 10:08:02,541 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 10:08:02,541 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 10:08:02,541 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 10:08:02,541 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-24 10:08:02,542 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 10:08:02,542 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 10:08:02,542 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-24 10:08:02,543 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-24 10:08:02,544 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 10:08:02,544 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-24 10:08:02,544 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-24 10:08:02,544 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-24 10:08:02,545 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 10:08:02,546 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 10:08:02,546 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-24 10:08:02,546 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-24 10:08:02,546 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 10:08:02,547 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 10:08:02,547 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-24 10:08:02,547 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 10:08:02,547 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-24 10:08:02,547 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-24 10:08:02,548 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 10:08:02,548 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-24 10:08:02,548 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 10:08:02,548 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-24 10:08:02,551 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 10:08:02,551 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 10:08:02,551 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:08:02,552 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 10:08:02,552 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 10:08:02,552 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-24 10:08:02,552 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-24 10:08:02,553 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-24 10:08:02,553 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-24 10:08:02,553 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 10:08:02,553 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 10:08:02,554 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d52fc1a8-d4f7-4f75-a036-8a697d2df8df/bin/utaipan-9zjyvhn0QE/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d52fc1a8-d4f7-4f75-a036-8a697d2df8df/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eb940cb4e8580a7f29cd512663d7ddf095173e433385db93cb3bce78775a2871 [2021-10-24 10:08:02,823 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 10:08:02,843 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 10:08:02,846 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 10:08:02,847 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 10:08:02,848 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 10:08:02,849 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d52fc1a8-d4f7-4f75-a036-8a697d2df8df/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/bitvector/num_conversion_1.c [2021-10-24 10:08:02,927 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d52fc1a8-d4f7-4f75-a036-8a697d2df8df/bin/utaipan-9zjyvhn0QE/data/6328bd19b/61c71d202f234fbe835f4e01f142ae66/FLAGac73dd6e2 [2021-10-24 10:08:03,339 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 10:08:03,339 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d52fc1a8-d4f7-4f75-a036-8a697d2df8df/sv-benchmarks/c/bitvector/num_conversion_1.c [2021-10-24 10:08:03,345 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d52fc1a8-d4f7-4f75-a036-8a697d2df8df/bin/utaipan-9zjyvhn0QE/data/6328bd19b/61c71d202f234fbe835f4e01f142ae66/FLAGac73dd6e2 [2021-10-24 10:08:03,737 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d52fc1a8-d4f7-4f75-a036-8a697d2df8df/bin/utaipan-9zjyvhn0QE/data/6328bd19b/61c71d202f234fbe835f4e01f142ae66 [2021-10-24 10:08:03,739 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 10:08:03,741 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 10:08:03,746 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 10:08:03,747 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 10:08:03,750 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 10:08:03,751 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:08:03" (1/1) ... [2021-10-24 10:08:03,752 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9847196 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:08:03, skipping insertion in model container [2021-10-24 10:08:03,753 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:08:03" (1/1) ... [2021-10-24 10:08:03,758 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 10:08:03,770 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 10:08:03,939 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d52fc1a8-d4f7-4f75-a036-8a697d2df8df/sv-benchmarks/c/bitvector/num_conversion_1.c[368,381] [2021-10-24 10:08:03,952 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:08:03,960 INFO L203 MainTranslator]: Completed pre-run [2021-10-24 10:08:03,969 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d52fc1a8-d4f7-4f75-a036-8a697d2df8df/sv-benchmarks/c/bitvector/num_conversion_1.c[368,381] [2021-10-24 10:08:03,974 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:08:03,985 INFO L208 MainTranslator]: Completed translation [2021-10-24 10:08:03,985 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:08:03 WrapperNode [2021-10-24 10:08:03,986 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 10:08:03,986 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-24 10:08:03,987 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-24 10:08:03,987 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-24 10:08:03,993 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:08:03" (1/1) ... [2021-10-24 10:08:03,999 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:08:03" (1/1) ... [2021-10-24 10:08:04,018 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-24 10:08:04,019 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-24 10:08:04,019 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-24 10:08:04,019 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-24 10:08:04,027 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:08:03" (1/1) ... [2021-10-24 10:08:04,028 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:08:03" (1/1) ... [2021-10-24 10:08:04,029 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:08:03" (1/1) ... [2021-10-24 10:08:04,030 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:08:03" (1/1) ... [2021-10-24 10:08:04,034 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:08:03" (1/1) ... [2021-10-24 10:08:04,038 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:08:03" (1/1) ... [2021-10-24 10:08:04,039 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:08:03" (1/1) ... [2021-10-24 10:08:04,041 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-24 10:08:04,042 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-24 10:08:04,043 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-24 10:08:04,043 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-24 10:08:04,044 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:08:03" (1/1) ... [2021-10-24 10:08:04,065 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:08:04,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d52fc1a8-d4f7-4f75-a036-8a697d2df8df/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:08:04,102 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d52fc1a8-d4f7-4f75-a036-8a697d2df8df/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-24 10:08:04,117 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d52fc1a8-d4f7-4f75-a036-8a697d2df8df/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-24 10:08:04,142 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-24 10:08:04,142 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-24 10:08:04,142 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-24 10:08:04,142 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-24 10:08:04,434 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-24 10:08:04,444 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-24 10:08:04,447 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:08:04 BoogieIcfgContainer [2021-10-24 10:08:04,447 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-24 10:08:04,449 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-24 10:08:04,449 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-24 10:08:04,452 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-24 10:08:04,453 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 10:08:03" (1/3) ... [2021-10-24 10:08:04,454 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1206322e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:08:04, skipping insertion in model container [2021-10-24 10:08:04,469 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:08:03" (2/3) ... [2021-10-24 10:08:04,469 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1206322e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:08:04, skipping insertion in model container [2021-10-24 10:08:04,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:08:04" (3/3) ... [2021-10-24 10:08:04,471 INFO L111 eAbstractionObserver]: Analyzing ICFG num_conversion_1.c [2021-10-24 10:08:04,476 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-24 10:08:04,476 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-10-24 10:08:04,538 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-24 10:08:04,544 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-10-24 10:08:04,545 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-10-24 10:08:04,556 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:08:04,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-24 10:08:04,560 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:08:04,561 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-24 10:08:04,562 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-24 10:08:04,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:08:04,567 INFO L82 PathProgramCache]: Analyzing trace with hash 76272, now seen corresponding path program 1 times [2021-10-24 10:08:04,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:08:04,577 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005460956] [2021-10-24 10:08:04,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:08:04,579 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:08:04,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-24 10:08:04,671 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-24 10:08:04,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-24 10:08:04,708 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-24 10:08:04,710 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-24 10:08:04,711 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-24 10:08:04,713 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-24 10:08:04,713 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-24 10:08:04,714 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-24 10:08:04,714 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-24 10:08:04,714 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-24 10:08:04,724 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-24 10:08:04,731 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-24 10:08:04,752 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 10:08:04 BoogieIcfgContainer [2021-10-24 10:08:04,752 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-24 10:08:04,753 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-24 10:08:04,753 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-24 10:08:04,754 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-24 10:08:04,754 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:08:04" (3/4) ... [2021-10-24 10:08:04,757 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-24 10:08:04,758 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-24 10:08:04,760 INFO L168 Benchmark]: Toolchain (without parser) took 1017.09 ms. Allocated memory was 83.9 MB in the beginning and 109.1 MB in the end (delta: 25.2 MB). Free memory was 49.4 MB in the beginning and 85.1 MB in the end (delta: -35.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:08:04,761 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 83.9 MB. Free memory was 62.9 MB in the beginning and 62.9 MB in the end (delta: 29.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:08:04,762 INFO L168 Benchmark]: CACSL2BoogieTranslator took 239.47 ms. Allocated memory was 83.9 MB in the beginning and 109.1 MB in the end (delta: 25.2 MB). Free memory was 49.2 MB in the beginning and 85.4 MB in the end (delta: -36.1 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. [2021-10-24 10:08:04,762 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.70 ms. Allocated memory is still 109.1 MB. Free memory was 85.4 MB in the beginning and 84.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 10:08:04,763 INFO L168 Benchmark]: Boogie Preprocessor took 22.81 ms. Allocated memory is still 109.1 MB. Free memory was 83.7 MB in the beginning and 83.0 MB in the end (delta: 724.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:08:04,764 INFO L168 Benchmark]: RCFGBuilder took 404.72 ms. Allocated memory is still 109.1 MB. Free memory was 82.7 MB in the beginning and 71.5 MB in the end (delta: 11.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-24 10:08:04,764 INFO L168 Benchmark]: TraceAbstraction took 303.40 ms. Allocated memory is still 109.1 MB. Free memory was 71.2 MB in the beginning and 85.5 MB in the end (delta: -14.3 MB). Peak memory consumption was 16.7 MB. Max. memory is 16.1 GB. [2021-10-24 10:08:04,765 INFO L168 Benchmark]: Witness Printer took 4.66 ms. Allocated memory is still 109.1 MB. Free memory was 85.5 MB in the beginning and 85.1 MB in the end (delta: 449.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:08:04,769 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 83.9 MB. Free memory was 62.9 MB in the beginning and 62.9 MB in the end (delta: 29.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 239.47 ms. Allocated memory was 83.9 MB in the beginning and 109.1 MB in the end (delta: 25.2 MB). Free memory was 49.2 MB in the beginning and 85.4 MB in the end (delta: -36.1 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 31.70 ms. Allocated memory is still 109.1 MB. Free memory was 85.4 MB in the beginning and 84.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 22.81 ms. Allocated memory is still 109.1 MB. Free memory was 83.7 MB in the beginning and 83.0 MB in the end (delta: 724.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 404.72 ms. Allocated memory is still 109.1 MB. Free memory was 82.7 MB in the beginning and 71.5 MB in the end (delta: 11.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 303.40 ms. Allocated memory is still 109.1 MB. Free memory was 71.2 MB in the beginning and 85.5 MB in the end (delta: -14.3 MB). Peak memory consumption was 16.7 MB. Max. memory is 16.1 GB. * Witness Printer took 4.66 ms. Allocated memory is still 109.1 MB. Free memory was 85.5 MB in the beginning and 85.1 MB in the end (delta: 449.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 24]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of shiftLeft at line 24. Possible FailurePath: [L16] unsigned char x; [L17] unsigned char y; [L18] unsigned char c; [L20] x = 37 [L21] y = 0 [L22] c = 0 [L23] COND TRUE c < (unsigned char)8 [L24] ((unsigned char)1) << c - UnprovableResult [Line: 24]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 27]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 27]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 29]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 29]: 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 1 procedures, 16 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 193.6ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 6.8ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 8.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 5.0ms SsaConstructionTime, 33.8ms SatisfiabilityAnalysisTime, 0.0ms InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-24 10:08:04,816 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d52fc1a8-d4f7-4f75-a036-8a697d2df8df/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...