./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/bitvector/num_conversion_2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_da53113c-256b-44c5-8aa3-e968eed1e779/bin/ukojak/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_da53113c-256b-44c5-8aa3-e968eed1e779/bin/ukojak/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_da53113c-256b-44c5-8aa3-e968eed1e779/bin/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_da53113c-256b-44c5-8aa3-e968eed1e779/bin/ukojak/config/KojakReach.xml -i ../../sv-benchmarks/c/bitvector/num_conversion_2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_da53113c-256b-44c5-8aa3-e968eed1e779/bin/ukojak/config/svcomp-Overflow-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_da53113c-256b-44c5-8aa3-e968eed1e779/bin/ukojak --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 Kojak --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6f17fe8c9c038caf356703f241998bd5fc14538d ..................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis No suitable file found in config dir /tmp/vcloud-vcloud-master/worker/run_dir_da53113c-256b-44c5-8aa3-e968eed1e779/bin/ukojak/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-a4ecdab [2020-11-28 04:40:08,110 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 04:40:08,112 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 04:40:08,168 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 04:40:08,179 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 04:40:08,181 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 04:40:08,183 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 04:40:08,185 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 04:40:08,187 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 04:40:08,189 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 04:40:08,197 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 04:40:08,201 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 04:40:08,202 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 04:40:08,207 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 04:40:08,209 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 04:40:08,213 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 04:40:08,214 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 04:40:08,218 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 04:40:08,222 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 04:40:08,227 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 04:40:08,229 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 04:40:08,231 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 04:40:08,233 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 04:40:08,234 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 04:40:08,247 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 04:40:08,248 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 04:40:08,248 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 04:40:08,250 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 04:40:08,251 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 04:40:08,252 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 04:40:08,252 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 04:40:08,253 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 04:40:08,255 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 04:40:08,257 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 04:40:08,258 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 04:40:08,258 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 04:40:08,259 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 04:40:08,259 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 04:40:08,260 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 04:40:08,260 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 04:40:08,262 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 04:40:08,265 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_da53113c-256b-44c5-8aa3-e968eed1e779/bin/ukojak/config/svcomp-Overflow-32bit-Kojak_Default.epf [2020-11-28 04:40:08,312 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 04:40:08,312 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 04:40:08,314 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 04:40:08,314 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2020-11-28 04:40:08,315 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 04:40:08,315 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 04:40:08,316 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 04:40:08,316 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 04:40:08,316 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 04:40:08,316 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 04:40:08,317 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 04:40:08,318 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 04:40:08,318 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 04:40:08,318 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 04:40:08,318 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 04:40:08,318 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-11-28 04:40:08,319 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 04:40:08,319 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 04:40:08,319 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 04:40:08,319 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 04:40:08,320 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2020-11-28 04:40:08,320 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2020-11-28 04:40:08,320 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 04:40:08,320 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 04:40:08,321 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2020-11-28 04:40:08,321 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 04:40:08,321 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 04:40:08,321 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 04:40:08,321 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2020-11-28 04:40:08,323 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 04:40:08,323 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 04:40:08,323 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-vcloud-master/worker/run_dir_da53113c-256b-44c5-8aa3-e968eed1e779/bin/ukojak/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_da53113c-256b-44c5-8aa3-e968eed1e779/bin/ukojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6f17fe8c9c038caf356703f241998bd5fc14538d [2020-11-28 04:40:08,626 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 04:40:08,657 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 04:40:08,659 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 04:40:08,660 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 04:40:08,660 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 04:40:08,661 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_da53113c-256b-44c5-8aa3-e968eed1e779/bin/ukojak/../../sv-benchmarks/c/bitvector/num_conversion_2.c [2020-11-28 04:40:08,727 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_da53113c-256b-44c5-8aa3-e968eed1e779/bin/ukojak/data/272e94672/9a3aab61474c4ac7ad0f41e5cb25ef66/FLAGd94584bb2 [2020-11-28 04:40:09,285 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 04:40:09,285 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_da53113c-256b-44c5-8aa3-e968eed1e779/sv-benchmarks/c/bitvector/num_conversion_2.c [2020-11-28 04:40:09,296 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_da53113c-256b-44c5-8aa3-e968eed1e779/bin/ukojak/data/272e94672/9a3aab61474c4ac7ad0f41e5cb25ef66/FLAGd94584bb2 [2020-11-28 04:40:09,643 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_da53113c-256b-44c5-8aa3-e968eed1e779/bin/ukojak/data/272e94672/9a3aab61474c4ac7ad0f41e5cb25ef66 [2020-11-28 04:40:09,646 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 04:40:09,647 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 04:40:09,650 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 04:40:09,650 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 04:40:09,653 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 04:40:09,654 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:40:09" (1/1) ... [2020-11-28 04:40:09,656 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67b93476 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:40:09, skipping insertion in model container [2020-11-28 04:40:09,657 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:40:09" (1/1) ... [2020-11-28 04:40:09,664 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 04:40:09,681 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 04:40:09,829 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 04:40:09,840 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 04:40:09,877 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 04:40:09,894 INFO L208 MainTranslator]: Completed translation [2020-11-28 04:40:09,894 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:40:09 WrapperNode [2020-11-28 04:40:09,895 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 04:40:09,896 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 04:40:09,896 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 04:40:09,896 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 04:40:09,904 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:40:09" (1/1) ... [2020-11-28 04:40:09,911 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:40:09" (1/1) ... [2020-11-28 04:40:09,926 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 04:40:09,927 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 04:40:09,927 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 04:40:09,927 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 04:40:09,935 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:40:09" (1/1) ... [2020-11-28 04:40:09,935 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:40:09" (1/1) ... [2020-11-28 04:40:09,937 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:40:09" (1/1) ... [2020-11-28 04:40:09,937 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:40:09" (1/1) ... [2020-11-28 04:40:09,941 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:40:09" (1/1) ... [2020-11-28 04:40:09,944 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:40:09" (1/1) ... [2020-11-28 04:40:09,945 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:40:09" (1/1) ... [2020-11-28 04:40:09,947 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 04:40:09,948 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 04:40:09,948 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 04:40:09,948 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 04:40:09,949 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:40:09" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_da53113c-256b-44c5-8aa3-e968eed1e779/bin/ukojak/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (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:10000 [2020-11-28 04:40:10,028 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 04:40:10,028 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 04:40:10,029 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 04:40:10,029 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 04:40:10,598 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 04:40:10,599 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-28 04:40:10,601 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:40:10 BoogieIcfgContainer [2020-11-28 04:40:10,601 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 04:40:10,602 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2020-11-28 04:40:10,602 INFO L271 PluginConnector]: Initializing CodeCheck... [2020-11-28 04:40:10,614 INFO L275 PluginConnector]: CodeCheck initialized [2020-11-28 04:40:10,614 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:40:10" (1/1) ... [2020-11-28 04:40:10,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 04:40:10,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:40:10,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 16 states and 17 transitions. [2020-11-28 04:40:10,673 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2020-11-28 04:40:10,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-11-28 04:40:10,676 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:40:10,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 04:40:10,787 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 04:40:10,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 04:40:10,824 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 04:40:10,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 04:40:10,891 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 04:40:10,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 04:40:10,909 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 04:40:10,925 WARN L483 CodeCheckObserver]: This program is UNSAFE, Check terminated with 1 iterations. [2020-11-28 04:40:10,971 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 28.11 04:40:10 ImpRootNode [2020-11-28 04:40:10,971 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2020-11-28 04:40:10,972 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 04:40:10,972 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 04:40:10,972 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 04:40:10,972 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:40:10" (3/4) ... [2020-11-28 04:40:10,976 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-28 04:40:10,977 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 04:40:10,980 INFO L168 Benchmark]: Toolchain (without parser) took 1330.54 ms. Allocated memory is still 123.7 MB. Free memory was 90.4 MB in the beginning and 98.5 MB in the end (delta: -8.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 04:40:10,981 INFO L168 Benchmark]: CDTParser took 1.06 ms. Allocated memory is still 77.6 MB. Free memory was 35.8 MB in the beginning and 35.7 MB in the end (delta: 40.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 04:40:10,983 INFO L168 Benchmark]: CACSL2BoogieTranslator took 245.40 ms. Allocated memory is still 123.7 MB. Free memory was 90.4 MB in the beginning and 98.0 MB in the end (delta: -7.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 04:40:10,985 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.32 ms. Allocated memory is still 123.7 MB. Free memory was 97.6 MB in the beginning and 96.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 04:40:10,986 INFO L168 Benchmark]: Boogie Preprocessor took 20.37 ms. Allocated memory is still 123.7 MB. Free memory was 96.3 MB in the beginning and 95.4 MB in the end (delta: 849.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 04:40:10,988 INFO L168 Benchmark]: RCFGBuilder took 653.14 ms. Allocated memory is still 123.7 MB. Free memory was 95.4 MB in the beginning and 79.0 MB in the end (delta: 16.4 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-11-28 04:40:10,989 INFO L168 Benchmark]: CodeCheck took 369.34 ms. Allocated memory is still 123.7 MB. Free memory was 79.0 MB in the beginning and 98.9 MB in the end (delta: -19.9 MB). Peak memory consumption was 16.4 MB. Max. memory is 16.1 GB. [2020-11-28 04:40:10,990 INFO L168 Benchmark]: Witness Printer took 5.25 ms. Allocated memory is still 123.7 MB. Free memory was 98.8 MB in the beginning and 98.5 MB in the end (delta: 319.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 04:40:11,000 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck: - StatisticsResult: Ultimate CodeCheck benchmark data CFG has 1 procedures, 16 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 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, 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: No data available, ReuseStatistics: No data available - UnprovableResult [Line: 23]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of shiftLeft at line 23. Possible FailurePath: [L16] unsigned char x = __VERIFIER_nondet_uchar(); [L17] unsigned char y; [L18] unsigned char c; [L20] y = 0 [L21] c = 0 [L22] COND TRUE c < (unsigned char)8 [L23] ((unsigned char)1) << c * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.06 ms. Allocated memory is still 77.6 MB. Free memory was 35.8 MB in the beginning and 35.7 MB in the end (delta: 40.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 245.40 ms. Allocated memory is still 123.7 MB. Free memory was 90.4 MB in the beginning and 98.0 MB in the end (delta: -7.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 30.32 ms. Allocated memory is still 123.7 MB. Free memory was 97.6 MB in the beginning and 96.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 20.37 ms. Allocated memory is still 123.7 MB. Free memory was 96.3 MB in the beginning and 95.4 MB in the end (delta: 849.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 653.14 ms. Allocated memory is still 123.7 MB. Free memory was 95.4 MB in the beginning and 79.0 MB in the end (delta: 16.4 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * CodeCheck took 369.34 ms. Allocated memory is still 123.7 MB. Free memory was 79.0 MB in the beginning and 98.9 MB in the end (delta: -19.9 MB). Peak memory consumption was 16.4 MB. Max. memory is 16.1 GB. * Witness Printer took 5.25 ms. Allocated memory is still 123.7 MB. Free memory was 98.8 MB in the beginning and 98.5 MB in the end (delta: 319.0 kB). There was no memory consumed. Max. memory is 16.1 GB. RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...