./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/bitvector/num_conversion_2.c --full-output -ea --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8bd4bc60 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -ea -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/bitvector/num_conversion_2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ff582c9ab67a3c5a19efc8f09de08768907e1ba6 ............................................................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis No suitable file found in config dir /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 0.1.25-8bd4bc6 [2020-07-29 01:24:45,010 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-29 01:24:45,013 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-29 01:24:45,025 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-29 01:24:45,025 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-29 01:24:45,027 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-29 01:24:45,028 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-29 01:24:45,030 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-29 01:24:45,032 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-29 01:24:45,033 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-29 01:24:45,036 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-29 01:24:45,038 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-29 01:24:45,038 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-29 01:24:45,039 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-29 01:24:45,042 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-29 01:24:45,043 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-29 01:24:45,045 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-29 01:24:45,049 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-29 01:24:45,052 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-29 01:24:45,057 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-29 01:24:45,060 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-29 01:24:45,064 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-29 01:24:45,068 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-29 01:24:45,069 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-29 01:24:45,072 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-29 01:24:45,074 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-29 01:24:45,074 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-29 01:24:45,075 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-29 01:24:45,077 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-29 01:24:45,078 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-29 01:24:45,078 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-29 01:24:45,080 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-29 01:24:45,080 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-29 01:24:45,082 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-29 01:24:45,084 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-29 01:24:45,084 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-29 01:24:45,085 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-29 01:24:45,085 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-29 01:24:45,086 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-29 01:24:45,086 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-29 01:24:45,088 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-29 01:24:45,089 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2020-07-29 01:24:45,128 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-29 01:24:45,132 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-29 01:24:45,133 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-29 01:24:45,137 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-29 01:24:45,138 INFO L138 SettingsManager]: * Use SBE=true [2020-07-29 01:24:45,138 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-29 01:24:45,138 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-29 01:24:45,139 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-07-29 01:24:45,139 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-29 01:24:45,139 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-29 01:24:45,139 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-29 01:24:45,140 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-29 01:24:45,140 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-29 01:24:45,140 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-29 01:24:45,142 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-07-29 01:24:45,143 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-29 01:24:45,143 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-29 01:24:45,143 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-29 01:24:45,143 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-29 01:24:45,144 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-29 01:24:45,144 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-29 01:24:45,144 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-29 01:24:45,145 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-29 01:24:45,145 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-29 01:24:45,146 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-29 01:24:45,146 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-29 01:24:45,146 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-29 01:24:45,146 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-29 01:24:45,147 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-29 01:24:45,148 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-29 01:24:45,148 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-29 01:24:45,148 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux 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 -> Automizer 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 -> ff582c9ab67a3c5a19efc8f09de08768907e1ba6 [2020-07-29 01:24:45,455 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-29 01:24:45,477 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-29 01:24:45,482 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-29 01:24:45,483 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-29 01:24:45,486 INFO L275 PluginConnector]: CDTParser initialized [2020-07-29 01:24:45,487 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/bitvector/num_conversion_2.c [2020-07-29 01:24:45,544 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e660a2e3/4dd0eafc387e4d9d90176d218eb8ac25/FLAG76a187057 [2020-07-29 01:24:45,977 INFO L306 CDTParser]: Found 1 translation units. [2020-07-29 01:24:45,978 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/num_conversion_2.c [2020-07-29 01:24:45,983 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e660a2e3/4dd0eafc387e4d9d90176d218eb8ac25/FLAG76a187057 [2020-07-29 01:24:46,380 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e660a2e3/4dd0eafc387e4d9d90176d218eb8ac25 [2020-07-29 01:24:46,384 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-29 01:24:46,387 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-07-29 01:24:46,389 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-29 01:24:46,389 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-29 01:24:46,393 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-29 01:24:46,394 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.07 01:24:46" (1/1) ... [2020-07-29 01:24:46,397 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@674049d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:24:46, skipping insertion in model container [2020-07-29 01:24:46,398 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.07 01:24:46" (1/1) ... [2020-07-29 01:24:46,406 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-29 01:24:46,425 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-29 01:24:46,607 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-29 01:24:46,612 INFO L203 MainTranslator]: Completed pre-run [2020-07-29 01:24:46,631 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-29 01:24:46,646 INFO L208 MainTranslator]: Completed translation [2020-07-29 01:24:46,647 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:24:46 WrapperNode [2020-07-29 01:24:46,647 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-29 01:24:46,648 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-29 01:24:46,648 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-29 01:24:46,648 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-29 01:24:46,658 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:24:46" (1/1) ... [2020-07-29 01:24:46,664 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:24:46" (1/1) ... [2020-07-29 01:24:46,748 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-29 01:24:46,748 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-29 01:24:46,749 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-29 01:24:46,749 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-29 01:24:46,756 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:24:46" (1/1) ... [2020-07-29 01:24:46,756 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:24:46" (1/1) ... [2020-07-29 01:24:46,757 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:24:46" (1/1) ... [2020-07-29 01:24:46,757 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:24:46" (1/1) ... [2020-07-29 01:24:46,762 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:24:46" (1/1) ... [2020-07-29 01:24:46,766 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:24:46" (1/1) ... [2020-07-29 01:24:46,767 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:24:46" (1/1) ... [2020-07-29 01:24:46,769 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-29 01:24:46,769 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-29 01:24:46,769 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-29 01:24:46,770 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-29 01:24:46,771 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:24:46" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-07-29 01:24:46,834 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-29 01:24:46,835 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-29 01:24:47,088 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-29 01:24:47,088 INFO L295 CfgBuilder]: Removed 7 assume(true) statements. [2020-07-29 01:24:47,092 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.07 01:24:47 BoogieIcfgContainer [2020-07-29 01:24:47,092 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-29 01:24:47,093 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-29 01:24:47,094 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-29 01:24:47,097 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-29 01:24:47,097 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.07 01:24:46" (1/3) ... [2020-07-29 01:24:47,098 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10667d47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.07 01:24:47, skipping insertion in model container [2020-07-29 01:24:47,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:24:46" (2/3) ... [2020-07-29 01:24:47,099 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10667d47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.07 01:24:47, skipping insertion in model container [2020-07-29 01:24:47,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.07 01:24:47" (3/3) ... [2020-07-29 01:24:47,101 INFO L109 eAbstractionObserver]: Analyzing ICFG num_conversion_2.c [2020-07-29 01:24:47,112 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-29 01:24:47,119 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-07-29 01:24:47,138 INFO L251 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-07-29 01:24:47,171 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-29 01:24:47,171 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-29 01:24:47,171 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-29 01:24:47,172 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-29 01:24:47,172 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-29 01:24:47,172 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-29 01:24:47,172 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-29 01:24:47,172 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-29 01:24:47,193 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2020-07-29 01:24:47,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-07-29 01:24:47,201 INFO L414 BasicCegarLoop]: Found error trace [2020-07-29 01:24:47,202 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-07-29 01:24:47,202 INFO L427 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]=== [2020-07-29 01:24:47,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-29 01:24:47,209 INFO L82 PathProgramCache]: Analyzing trace with hash 31073, now seen corresponding path program 1 times [2020-07-29 01:24:47,221 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-29 01:24:47,222 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798516543] [2020-07-29 01:24:47,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-29 01:24:47,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 01:24:47,315 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 01:24:47,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 01:24:47,322 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 01:24:47,340 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-29 01:24:47,341 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-29 01:24:47,342 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-29 01:24:47,362 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-29 01:24:47,362 WARN L170 areAnnotationChecker]: L20-2 has no Hoare annotation [2020-07-29 01:24:47,362 WARN L170 areAnnotationChecker]: L20-2 has no Hoare annotation [2020-07-29 01:24:47,362 WARN L170 areAnnotationChecker]: L20-2 has no Hoare annotation [2020-07-29 01:24:47,362 WARN L170 areAnnotationChecker]: L20-3 has no Hoare annotation [2020-07-29 01:24:47,362 WARN L170 areAnnotationChecker]: L21 has no Hoare annotation [2020-07-29 01:24:47,363 WARN L170 areAnnotationChecker]: L21 has no Hoare annotation [2020-07-29 01:24:47,363 WARN L170 areAnnotationChecker]: L5 has no Hoare annotation [2020-07-29 01:24:47,363 WARN L170 areAnnotationChecker]: L5 has no Hoare annotation [2020-07-29 01:24:47,363 WARN L170 areAnnotationChecker]: L21-1 has no Hoare annotation [2020-07-29 01:24:47,363 WARN L170 areAnnotationChecker]: L21-1 has no Hoare annotation [2020-07-29 01:24:47,363 WARN L170 areAnnotationChecker]: L6 has no Hoare annotation [2020-07-29 01:24:47,364 WARN L170 areAnnotationChecker]: L5-2 has no Hoare annotation [2020-07-29 01:24:47,364 WARN L170 areAnnotationChecker]: L23 has no Hoare annotation [2020-07-29 01:24:47,364 WARN L170 areAnnotationChecker]: L23 has no Hoare annotation [2020-07-29 01:24:47,364 WARN L170 areAnnotationChecker]: L30 has no Hoare annotation [2020-07-29 01:24:47,364 WARN L170 areAnnotationChecker]: L24 has no Hoare annotation [2020-07-29 01:24:47,364 WARN L170 areAnnotationChecker]: L24 has no Hoare annotation [2020-07-29 01:24:47,365 WARN L170 areAnnotationChecker]: L23-2 has no Hoare annotation [2020-07-29 01:24:47,365 WARN L170 areAnnotationChecker]: L23-2 has no Hoare annotation [2020-07-29 01:24:47,365 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-29 01:24:47,365 WARN L170 areAnnotationChecker]: L24-1 has no Hoare annotation [2020-07-29 01:24:47,365 WARN L170 areAnnotationChecker]: L24-1 has no Hoare annotation [2020-07-29 01:24:47,366 WARN L170 areAnnotationChecker]: L26 has no Hoare annotation [2020-07-29 01:24:47,366 WARN L170 areAnnotationChecker]: L26 has no Hoare annotation [2020-07-29 01:24:47,366 INFO L163 areAnnotationChecker]: CFG has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2020-07-29 01:24:47,370 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.07 01:24:47 BoogieIcfgContainer [2020-07-29 01:24:47,370 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-29 01:24:47,370 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-07-29 01:24:47,371 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-07-29 01:24:47,371 INFO L275 PluginConnector]: Witness Printer initialized [2020-07-29 01:24:47,372 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.07 01:24:47" (3/4) ... [2020-07-29 01:24:47,376 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-07-29 01:24:47,376 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-07-29 01:24:47,380 INFO L168 Benchmark]: Toolchain (without parser) took 993.38 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.1 MB). Free memory was 961.6 MB in the beginning and 1.1 GB in the end (delta: -125.3 MB). Peak memory consumption was 5.8 MB. Max. memory is 11.5 GB. [2020-07-29 01:24:47,381 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 987.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-29 01:24:47,382 INFO L168 Benchmark]: CACSL2BoogieTranslator took 258.86 ms. Allocated memory is still 1.0 GB. Free memory was 961.6 MB in the beginning and 950.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2020-07-29 01:24:47,383 INFO L168 Benchmark]: Boogie Procedure Inliner took 100.20 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.1 MB). Free memory was 950.8 MB in the beginning and 1.1 GB in the end (delta: -176.4 MB). Peak memory consumption was 9.9 MB. Max. memory is 11.5 GB. [2020-07-29 01:24:47,384 INFO L168 Benchmark]: Boogie Preprocessor took 20.41 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-29 01:24:47,385 INFO L168 Benchmark]: RCFGBuilder took 322.90 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 27.1 MB). Peak memory consumption was 27.1 MB. Max. memory is 11.5 GB. [2020-07-29 01:24:47,386 INFO L168 Benchmark]: TraceAbstraction took 276.74 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. [2020-07-29 01:24:47,387 INFO L168 Benchmark]: Witness Printer took 6.06 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-29 01:24:47,394 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 987.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 258.86 ms. Allocated memory is still 1.0 GB. Free memory was 961.6 MB in the beginning and 950.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 100.20 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.1 MB). Free memory was 950.8 MB in the beginning and 1.1 GB in the end (delta: -176.4 MB). Peak memory consumption was 9.9 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 20.41 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 322.90 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 27.1 MB). Peak memory consumption was 27.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 276.74 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. * Witness Printer took 6.06 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 21]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of shiftLeft at line 21. Possible FailurePath: [L14] unsigned char x = __VERIFIER_nondet_uchar(); [L15] unsigned char y; [L16] unsigned char c; [L18] y = 0 [L19] c = 0 [L20] COND TRUE c < (unsigned char)8 [L21] ((unsigned char)1) << c - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 22 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.1s, 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=22occurred 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...