./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 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_4fade351-cb98-49c7-b25b-97de744ec128/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_4fade351-cb98-49c7-b25b-97de744ec128/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_4fade351-cb98-49c7-b25b-97de744ec128/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_4fade351-cb98-49c7-b25b-97de744ec128/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/num_conversion_1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_4fade351-cb98-49c7-b25b-97de744ec128/bin/utaipan/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_4fade351-cb98-49c7-b25b-97de744ec128/bin/utaipan --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 22f8891fc10bb8c305de18eb9540699e7b8a01ce ................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis No suitable file found in config dir /tmp/vcloud-vcloud-master/worker/run_dir_4fade351-cb98-49c7-b25b-97de744ec128/bin/utaipan/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 0.2.0-7b2dab5 [2020-12-03 12:35:56,350 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-03 12:35:56,353 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-03 12:35:56,424 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-03 12:35:56,426 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-03 12:35:56,432 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-03 12:35:56,449 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-03 12:35:56,451 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-03 12:35:56,454 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-03 12:35:56,460 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-03 12:35:56,461 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-03 12:35:56,464 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-03 12:35:56,464 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-03 12:35:56,468 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-03 12:35:56,469 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-03 12:35:56,472 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-03 12:35:56,473 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-03 12:35:56,476 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-03 12:35:56,480 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-03 12:35:56,487 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-03 12:35:56,489 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-03 12:35:56,490 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-03 12:35:56,493 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-03 12:35:56,494 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-03 12:35:56,502 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-03 12:35:56,503 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-03 12:35:56,503 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-03 12:35:56,505 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-03 12:35:56,506 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-03 12:35:56,507 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-03 12:35:56,507 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-03 12:35:56,509 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-03 12:35:56,511 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-03 12:35:56,512 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-03 12:35:56,513 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-03 12:35:56,513 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-03 12:35:56,514 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-03 12:35:56,514 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-03 12:35:56,515 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-03 12:35:56,516 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-03 12:35:56,518 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-03 12:35:56,520 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_4fade351-cb98-49c7-b25b-97de744ec128/bin/utaipan/config/svcomp-Overflow-32bit-Taipan_Default.epf [2020-12-03 12:35:56,560 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-03 12:35:56,560 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-03 12:35:56,562 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-03 12:35:56,562 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-03 12:35:56,563 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-03 12:35:56,563 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-03 12:35:56,563 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-03 12:35:56,563 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-03 12:35:56,563 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-03 12:35:56,564 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-03 12:35:56,565 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-03 12:35:56,565 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-03 12:35:56,565 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-03 12:35:56,566 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-03 12:35:56,566 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-03 12:35:56,567 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-03 12:35:56,567 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-03 12:35:56,567 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-03 12:35:56,567 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-03 12:35:56,568 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-03 12:35:56,568 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-03 12:35:56,568 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-03 12:35:56,568 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-03 12:35:56,568 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-03 12:35:56,569 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-12-03 12:35:56,569 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-03 12:35:56,569 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-03 12:35:56,569 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-03 12:35:56,570 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-03 12:35:56,570 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-03 12:35:56,570 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-03 12:35:56,570 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-03 12:35:56,571 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-03 12:35:56,571 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-03 12:35:56,571 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-03 12:35:56,572 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-03 12:35:56,572 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-03 12:35:56,572 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-03 12:35:56,572 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-03 12:35:56,572 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-03 12:35:56,573 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-vcloud-master/worker/run_dir_4fade351-cb98-49c7-b25b-97de744ec128/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_4fade351-cb98-49c7-b25b-97de744ec128/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 22f8891fc10bb8c305de18eb9540699e7b8a01ce [2020-12-03 12:35:56,866 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-03 12:35:56,915 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-03 12:35:56,918 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-03 12:35:56,919 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-03 12:35:56,920 INFO L275 PluginConnector]: CDTParser initialized [2020-12-03 12:35:56,921 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_4fade351-cb98-49c7-b25b-97de744ec128/bin/utaipan/../../sv-benchmarks/c/bitvector/num_conversion_1.c [2020-12-03 12:35:57,000 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4fade351-cb98-49c7-b25b-97de744ec128/bin/utaipan/data/f9b61dc95/cb6cb44f876f46509975f22b7b760575/FLAG5c8d8e7d2 [2020-12-03 12:35:57,533 INFO L306 CDTParser]: Found 1 translation units. [2020-12-03 12:35:57,534 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_4fade351-cb98-49c7-b25b-97de744ec128/sv-benchmarks/c/bitvector/num_conversion_1.c [2020-12-03 12:35:57,544 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4fade351-cb98-49c7-b25b-97de744ec128/bin/utaipan/data/f9b61dc95/cb6cb44f876f46509975f22b7b760575/FLAG5c8d8e7d2 [2020-12-03 12:35:57,891 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_4fade351-cb98-49c7-b25b-97de744ec128/bin/utaipan/data/f9b61dc95/cb6cb44f876f46509975f22b7b760575 [2020-12-03 12:35:57,893 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-03 12:35:57,896 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-03 12:35:57,901 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-03 12:35:57,902 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-03 12:35:57,905 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-03 12:35:57,906 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 12:35:57" (1/1) ... [2020-12-03 12:35:57,909 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b45b9d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:35:57, skipping insertion in model container [2020-12-03 12:35:57,909 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 12:35:57" (1/1) ... [2020-12-03 12:35:57,917 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-03 12:35:57,933 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-03 12:35:58,113 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_4fade351-cb98-49c7-b25b-97de744ec128/sv-benchmarks/c/bitvector/num_conversion_1.c[368,381] [2020-12-03 12:35:58,132 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-03 12:35:58,139 INFO L203 MainTranslator]: Completed pre-run [2020-12-03 12:35:58,150 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_4fade351-cb98-49c7-b25b-97de744ec128/sv-benchmarks/c/bitvector/num_conversion_1.c[368,381] [2020-12-03 12:35:58,155 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-03 12:35:58,170 INFO L208 MainTranslator]: Completed translation [2020-12-03 12:35:58,170 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:35:58 WrapperNode [2020-12-03 12:35:58,171 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-03 12:35:58,172 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-03 12:35:58,172 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-03 12:35:58,172 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-03 12:35:58,181 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:35:58" (1/1) ... [2020-12-03 12:35:58,189 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:35:58" (1/1) ... [2020-12-03 12:35:58,209 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-03 12:35:58,209 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-03 12:35:58,210 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-03 12:35:58,210 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-03 12:35:58,222 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:35:58" (1/1) ... [2020-12-03 12:35:58,222 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:35:58" (1/1) ... [2020-12-03 12:35:58,236 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:35:58" (1/1) ... [2020-12-03 12:35:58,237 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:35:58" (1/1) ... [2020-12-03 12:35:58,240 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:35:58" (1/1) ... [2020-12-03 12:35:58,245 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:35:58" (1/1) ... [2020-12-03 12:35:58,246 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:35:58" (1/1) ... [2020-12-03 12:35:58,247 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-03 12:35:58,248 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-03 12:35:58,248 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-03 12:35:58,248 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-03 12:35:58,249 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:35:58" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4fade351-cb98-49c7-b25b-97de744ec128/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-03 12:35:58,330 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-03 12:35:58,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-03 12:35:58,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-03 12:35:58,332 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-03 12:35:58,681 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-03 12:35:58,681 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2020-12-03 12:35:58,683 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 12:35:58 BoogieIcfgContainer [2020-12-03 12:35:58,697 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-03 12:35:58,698 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-03 12:35:58,698 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-03 12:35:58,702 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-03 12:35:58,702 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.12 12:35:57" (1/3) ... [2020-12-03 12:35:58,703 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11eb6500 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 12:35:58, skipping insertion in model container [2020-12-03 12:35:58,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:35:58" (2/3) ... [2020-12-03 12:35:58,704 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11eb6500 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 12:35:58, skipping insertion in model container [2020-12-03 12:35:58,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 12:35:58" (3/3) ... [2020-12-03 12:35:58,705 INFO L111 eAbstractionObserver]: Analyzing ICFG num_conversion_1.c [2020-12-03 12:35:58,719 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-03 12:35:58,736 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-12-03 12:35:58,747 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-12-03 12:35:58,771 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-03 12:35:58,771 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-03 12:35:58,771 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-03 12:35:58,772 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-03 12:35:58,772 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-03 12:35:58,772 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-03 12:35:58,772 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-03 12:35:58,772 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-03 12:35:58,789 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2020-12-03 12:35:58,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-12-03 12:35:58,794 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:35:58,794 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-12-03 12:35:58,795 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-03 12:35:58,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:35:58,802 INFO L82 PathProgramCache]: Analyzing trace with hash 75311, now seen corresponding path program 1 times [2020-12-03 12:35:58,811 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:35:58,811 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735484615] [2020-12-03 12:35:58,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:35:58,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-03 12:35:58,939 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-03 12:35:58,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-03 12:35:58,981 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-03 12:35:59,005 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-12-03 12:35:59,005 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-03 12:35:59,007 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-03 12:35:59,038 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.12 12:35:59 BoogieIcfgContainer [2020-12-03 12:35:59,039 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-03 12:35:59,040 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-03 12:35:59,040 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-03 12:35:59,041 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-03 12:35:59,041 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 12:35:58" (3/4) ... [2020-12-03 12:35:59,047 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-03 12:35:59,048 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-03 12:35:59,052 INFO L168 Benchmark]: Toolchain (without parser) took 1152.80 ms. Allocated memory is still 96.5 MB. Free memory was 64.2 MB in the beginning and 42.6 MB in the end (delta: 21.6 MB). Peak memory consumption was 20.5 MB. Max. memory is 16.1 GB. [2020-12-03 12:35:59,054 INFO L168 Benchmark]: CDTParser took 0.45 ms. Allocated memory is still 96.5 MB. Free memory was 77.0 MB in the beginning and 77.0 MB in the end (delta: 28.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-03 12:35:59,056 INFO L168 Benchmark]: CACSL2BoogieTranslator took 270.17 ms. Allocated memory is still 96.5 MB. Free memory was 64.0 MB in the beginning and 74.1 MB in the end (delta: -10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-03 12:35:59,057 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.07 ms. Allocated memory is still 96.5 MB. Free memory was 73.6 MB in the beginning and 72.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-03 12:35:59,058 INFO L168 Benchmark]: Boogie Preprocessor took 37.46 ms. Allocated memory is still 96.5 MB. Free memory was 72.4 MB in the beginning and 71.5 MB in the end (delta: 853.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-03 12:35:59,059 INFO L168 Benchmark]: RCFGBuilder took 449.23 ms. Allocated memory is still 96.5 MB. Free memory was 71.5 MB in the beginning and 55.2 MB in the end (delta: 16.4 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-12-03 12:35:59,060 INFO L168 Benchmark]: TraceAbstraction took 340.60 ms. Allocated memory is still 96.5 MB. Free memory was 54.8 MB in the beginning and 43.0 MB in the end (delta: 11.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-12-03 12:35:59,061 INFO L168 Benchmark]: Witness Printer took 8.16 ms. Allocated memory is still 96.5 MB. Free memory was 43.0 MB in the beginning and 42.6 MB in the end (delta: 418.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-03 12:35:59,071 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.45 ms. Allocated memory is still 96.5 MB. Free memory was 77.0 MB in the beginning and 77.0 MB in the end (delta: 28.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 270.17 ms. Allocated memory is still 96.5 MB. Free memory was 64.0 MB in the beginning and 74.1 MB in the end (delta: -10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 37.07 ms. Allocated memory is still 96.5 MB. Free memory was 73.6 MB in the beginning and 72.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 37.46 ms. Allocated memory is still 96.5 MB. Free memory was 72.4 MB in the beginning and 71.5 MB in the end (delta: 853.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 449.23 ms. Allocated memory is still 96.5 MB. Free memory was 71.5 MB in the beginning and 55.2 MB in the end (delta: 16.4 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 340.60 ms. Allocated memory is still 96.5 MB. Free memory was 54.8 MB in the beginning and 43.0 MB in the end (delta: 11.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Witness Printer took 8.16 ms. Allocated memory is still 96.5 MB. Free memory was 43.0 MB in the beginning and 42.6 MB in the end (delta: 418.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 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 Received shutdown request...