./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 9a8b2e8d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -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 6f17fe8c9c038caf356703f241998bd5fc14538d .................................................................................................................................................................................................................................. 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 0.1.25-9a8b2e8 [2020-10-20 06:29:39,889 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 06:29:39,893 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 06:29:39,932 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 06:29:39,932 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 06:29:39,943 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 06:29:39,945 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 06:29:39,949 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 06:29:39,952 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 06:29:39,956 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 06:29:39,957 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 06:29:39,959 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 06:29:39,959 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 06:29:39,962 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 06:29:39,963 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 06:29:39,965 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 06:29:39,966 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 06:29:39,967 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 06:29:39,970 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 06:29:39,977 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 06:29:39,979 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 06:29:39,982 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 06:29:39,984 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 06:29:39,984 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 06:29:39,999 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 06:29:39,999 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 06:29:39,999 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 06:29:40,000 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 06:29:40,003 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 06:29:40,004 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 06:29:40,004 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 06:29:40,005 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 06:29:40,006 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 06:29:40,008 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 06:29:40,009 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 06:29:40,010 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 06:29:40,011 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 06:29:40,012 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 06:29:40,012 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 06:29:40,013 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 06:29:40,014 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 06:29:40,016 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2020-10-20 06:29:40,056 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 06:29:40,056 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 06:29:40,058 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 06:29:40,058 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 06:29:40,058 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 06:29:40,059 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 06:29:40,059 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 06:29:40,059 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 06:29:40,059 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 06:29:40,060 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 06:29:40,060 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 06:29:40,061 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 06:29:40,061 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 06:29:40,061 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 06:29:40,062 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-10-20 06:29:40,062 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 06:29:40,062 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 06:29:40,063 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 06:29:40,063 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 06:29:40,064 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 06:29:40,064 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 06:29:40,064 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 06:29:40,065 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 06:29:40,065 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 06:29:40,065 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 06:29:40,065 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 06:29:40,066 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 06:29:40,066 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 06:29:40,066 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 06:29:40,066 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 06:29:40,067 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 06:29:40,067 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 -> 6f17fe8c9c038caf356703f241998bd5fc14538d [2020-10-20 06:29:40,313 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 06:29:40,330 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 06:29:40,335 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 06:29:40,338 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 06:29:40,339 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 06:29:40,340 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/bitvector/num_conversion_2.c [2020-10-20 06:29:40,393 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f9eceaa1b/de7d7a3a0db44e41ae1fee9482595199/FLAG519b059b5 [2020-10-20 06:29:40,787 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 06:29:40,788 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/num_conversion_2.c [2020-10-20 06:29:40,793 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f9eceaa1b/de7d7a3a0db44e41ae1fee9482595199/FLAG519b059b5 [2020-10-20 06:29:41,217 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f9eceaa1b/de7d7a3a0db44e41ae1fee9482595199 [2020-10-20 06:29:41,220 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 06:29:41,227 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 06:29:41,229 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 06:29:41,229 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 06:29:41,233 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 06:29:41,234 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:29:41" (1/1) ... [2020-10-20 06:29:41,239 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c5eabbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:29:41, skipping insertion in model container [2020-10-20 06:29:41,239 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:29:41" (1/1) ... [2020-10-20 06:29:41,247 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 06:29:41,266 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 06:29:41,592 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:29:41,604 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 06:29:41,625 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:29:41,644 INFO L208 MainTranslator]: Completed translation [2020-10-20 06:29:41,645 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:29:41 WrapperNode [2020-10-20 06:29:41,645 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 06:29:41,647 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 06:29:41,647 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 06:29:41,649 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 06:29:41,657 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:29:41" (1/1) ... [2020-10-20 06:29:41,664 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:29:41" (1/1) ... [2020-10-20 06:29:41,684 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 06:29:41,685 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 06:29:41,685 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 06:29:41,685 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 06:29:41,696 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:29:41" (1/1) ... [2020-10-20 06:29:41,696 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:29:41" (1/1) ... [2020-10-20 06:29:41,708 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:29:41" (1/1) ... [2020-10-20 06:29:41,709 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:29:41" (1/1) ... [2020-10-20 06:29:41,717 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:29:41" (1/1) ... [2020-10-20 06:29:41,727 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:29:41" (1/1) ... [2020-10-20 06:29:41,728 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:29:41" (1/1) ... [2020-10-20 06:29:41,730 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 06:29:41,731 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 06:29:41,731 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 06:29:41,731 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 06:29:41,732 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:29:41" (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 [2020-10-20 06:29:41,794 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 06:29:41,794 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 06:29:41,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 06:29:41,795 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 06:29:42,024 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 06:29:42,025 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-10-20 06:29:42,026 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:29:42 BoogieIcfgContainer [2020-10-20 06:29:42,027 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 06:29:42,028 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 06:29:42,029 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 06:29:42,032 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 06:29:42,033 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 06:29:41" (1/3) ... [2020-10-20 06:29:42,034 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c920fc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:29:42, skipping insertion in model container [2020-10-20 06:29:42,034 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:29:41" (2/3) ... [2020-10-20 06:29:42,034 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c920fc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:29:42, skipping insertion in model container [2020-10-20 06:29:42,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:29:42" (3/3) ... [2020-10-20 06:29:42,037 INFO L111 eAbstractionObserver]: Analyzing ICFG num_conversion_2.c [2020-10-20 06:29:42,061 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 06:29:42,070 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-10-20 06:29:42,103 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-10-20 06:29:42,136 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 06:29:42,136 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 06:29:42,136 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 06:29:42,137 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 06:29:42,137 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 06:29:42,137 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 06:29:42,137 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 06:29:42,137 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 06:29:42,165 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-10-20 06:29:42,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-20 06:29:42,171 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:29:42,173 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-20 06:29:42,174 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]=== [2020-10-20 06:29:42,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:29:42,180 INFO L82 PathProgramCache]: Analyzing trace with hash 925796, now seen corresponding path program 1 times [2020-10-20 06:29:42,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:29:42,194 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745781799] [2020-10-20 06:29:42,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:29:42,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:29:42,292 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:29:42,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:29:42,312 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:29:42,341 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:29:42,342 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 06:29:42,343 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 06:29:42,367 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 06:29:42 BoogieIcfgContainer [2020-10-20 06:29:42,367 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 06:29:42,367 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 06:29:42,368 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 06:29:42,368 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 06:29:42,369 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:29:42" (3/4) ... [2020-10-20 06:29:42,372 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-20 06:29:42,372 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 06:29:42,376 INFO L168 Benchmark]: Toolchain (without parser) took 1152.92 ms. Allocated memory was 36.7 MB in the beginning and 46.7 MB in the end (delta: 10.0 MB). Free memory was 10.5 MB in the beginning and 26.1 MB in the end (delta: -15.6 MB). There was no memory consumed. Max. memory is 14.3 GB. [2020-10-20 06:29:42,377 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 36.2 MB. Free memory was 15.1 MB in the beginning and 15.1 MB in the end (delta: 3.1 kB). Peak memory consumption was 3.1 kB. Max. memory is 14.3 GB. [2020-10-20 06:29:42,378 INFO L168 Benchmark]: CACSL2BoogieTranslator took 416.73 ms. Allocated memory was 36.7 MB in the beginning and 45.1 MB in the end (delta: 8.4 MB). Free memory was 9.7 MB in the beginning and 27.8 MB in the end (delta: -18.2 MB). Peak memory consumption was 7.0 MB. Max. memory is 14.3 GB. [2020-10-20 06:29:42,379 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.66 ms. Allocated memory is still 45.1 MB. Free memory was 27.7 MB in the beginning and 26.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. [2020-10-20 06:29:42,380 INFO L168 Benchmark]: Boogie Preprocessor took 45.74 ms. Allocated memory is still 45.1 MB. Free memory was 26.0 MB in the beginning and 24.7 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.2 MB. Max. memory is 14.3 GB. [2020-10-20 06:29:42,381 INFO L168 Benchmark]: RCFGBuilder took 296.20 ms. Allocated memory was 45.1 MB in the beginning and 46.7 MB in the end (delta: 1.6 MB). Free memory was 24.7 MB in the beginning and 23.9 MB in the end (delta: 875.3 kB). Peak memory consumption was 12.4 MB. Max. memory is 14.3 GB. [2020-10-20 06:29:42,382 INFO L168 Benchmark]: TraceAbstraction took 338.71 ms. Allocated memory is still 46.7 MB. Free memory was 23.4 MB in the beginning and 26.6 MB in the end (delta: -3.2 MB). Peak memory consumption was 12.2 MB. Max. memory is 14.3 GB. [2020-10-20 06:29:42,383 INFO L168 Benchmark]: Witness Printer took 5.24 ms. Allocated memory is still 46.7 MB. Free memory was 26.4 MB in the beginning and 26.1 MB in the end (delta: 264.5 kB). Peak memory consumption was 264.5 kB. Max. memory is 14.3 GB. [2020-10-20 06:29:42,391 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 36.2 MB. Free memory was 15.1 MB in the beginning and 15.1 MB in the end (delta: 3.1 kB). Peak memory consumption was 3.1 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 416.73 ms. Allocated memory was 36.7 MB in the beginning and 45.1 MB in the end (delta: 8.4 MB). Free memory was 9.7 MB in the beginning and 27.8 MB in the end (delta: -18.2 MB). Peak memory consumption was 7.0 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 37.66 ms. Allocated memory is still 45.1 MB. Free memory was 27.7 MB in the beginning and 26.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 45.74 ms. Allocated memory is still 45.1 MB. Free memory was 26.0 MB in the beginning and 24.7 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.2 MB. Max. memory is 14.3 GB. * RCFGBuilder took 296.20 ms. Allocated memory was 45.1 MB in the beginning and 46.7 MB in the end (delta: 1.6 MB). Free memory was 24.7 MB in the beginning and 23.9 MB in the end (delta: 875.3 kB). Peak memory consumption was 12.4 MB. Max. memory is 14.3 GB. * TraceAbstraction took 338.71 ms. Allocated memory is still 46.7 MB. Free memory was 23.4 MB in the beginning and 26.6 MB in the end (delta: -3.2 MB). Peak memory consumption was 12.2 MB. Max. memory is 14.3 GB. * Witness Printer took 5.24 ms. Allocated memory is still 46.7 MB. Free memory was 26.4 MB in the beginning and 26.1 MB in the end (delta: 264.5 kB). Peak memory consumption was 264.5 kB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 24 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=24occurred 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, 4 NumberOfCodeBlocks, 4 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...