./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 906a4fb5 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -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 0.1.25-906a4fb [2020-10-19 18:36:43,121 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 18:36:43,123 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 18:36:43,162 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 18:36:43,162 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 18:36:43,171 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 18:36:43,174 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 18:36:43,177 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 18:36:43,179 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 18:36:43,183 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 18:36:43,185 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 18:36:43,186 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 18:36:43,187 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 18:36:43,190 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 18:36:43,192 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 18:36:43,194 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 18:36:43,195 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 18:36:43,196 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 18:36:43,198 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 18:36:43,205 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 18:36:43,207 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 18:36:43,208 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 18:36:43,209 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 18:36:43,210 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 18:36:43,221 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 18:36:43,226 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 18:36:43,226 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 18:36:43,227 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 18:36:43,228 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 18:36:43,230 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 18:36:43,231 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 18:36:43,232 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 18:36:43,234 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 18:36:43,235 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 18:36:43,236 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 18:36:43,238 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 18:36:43,239 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 18:36:43,239 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 18:36:43,239 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 18:36:43,240 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 18:36:43,241 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 18:36:43,242 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2020-10-19 18:36:43,287 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 18:36:43,288 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 18:36:43,289 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 18:36:43,289 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 18:36:43,290 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 18:36:43,290 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 18:36:43,290 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-19 18:36:43,291 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-19 18:36:43,291 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 18:36:43,291 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-19 18:36:43,292 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 18:36:43,293 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-19 18:36:43,293 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-19 18:36:43,294 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-19 18:36:43,294 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-10-19 18:36:43,294 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-19 18:36:43,294 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-19 18:36:43,295 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 18:36:43,295 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-19 18:36:43,295 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 18:36:43,296 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 18:36:43,296 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-19 18:36:43,296 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-19 18:36:43,296 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 18:36:43,297 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 18:36:43,297 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-19 18:36:43,297 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-19 18:36:43,298 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-19 18:36:43,298 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-19 18:36:43,298 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-19 18:36:43,298 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 18:36:43,299 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 [2020-10-19 18:36:43,602 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 18:36:43,614 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 18:36:43,618 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 18:36:43,619 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 18:36:43,620 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 18:36:43,621 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/bitvector/num_conversion_2.c [2020-10-19 18:36:43,681 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/070432387/f60b7c65e71f40ba991bc342ba407be0/FLAG5bc90a3bb [2020-10-19 18:36:44,085 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 18:36:44,085 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/num_conversion_2.c [2020-10-19 18:36:44,093 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/070432387/f60b7c65e71f40ba991bc342ba407be0/FLAG5bc90a3bb [2020-10-19 18:36:44,424 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/070432387/f60b7c65e71f40ba991bc342ba407be0 [2020-10-19 18:36:44,428 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 18:36:44,437 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-19 18:36:44,440 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 18:36:44,441 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 18:36:44,444 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 18:36:44,446 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:36:44" (1/1) ... [2020-10-19 18:36:44,449 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@206db19c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:36:44, skipping insertion in model container [2020-10-19 18:36:44,450 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:36:44" (1/1) ... [2020-10-19 18:36:44,458 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 18:36:44,474 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 18:36:44,666 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:36:44,676 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 18:36:44,693 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:36:44,706 INFO L208 MainTranslator]: Completed translation [2020-10-19 18:36:44,707 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:36:44 WrapperNode [2020-10-19 18:36:44,707 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 18:36:44,708 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-19 18:36:44,708 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-19 18:36:44,708 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-19 18:36:44,716 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:36:44" (1/1) ... [2020-10-19 18:36:44,725 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:36:44" (1/1) ... [2020-10-19 18:36:44,808 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-19 18:36:44,809 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 18:36:44,810 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 18:36:44,810 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 18:36:44,818 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:36:44" (1/1) ... [2020-10-19 18:36:44,818 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:36:44" (1/1) ... [2020-10-19 18:36:44,819 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:36:44" (1/1) ... [2020-10-19 18:36:44,819 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:36:44" (1/1) ... [2020-10-19 18:36:44,824 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:36:44" (1/1) ... [2020-10-19 18:36:44,828 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:36:44" (1/1) ... [2020-10-19 18:36:44,830 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:36:44" (1/1) ... [2020-10-19 18:36:44,832 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 18:36:44,832 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 18:36:44,836 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 18:36:44,836 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 18:36:44,837 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:36:44" (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 [2020-10-19 18:36:44,888 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 18:36:44,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 18:36:44,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-19 18:36:44,889 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-19 18:36:45,090 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 18:36:45,090 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-10-19 18:36:45,092 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:36:45 BoogieIcfgContainer [2020-10-19 18:36:45,092 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 18:36:45,093 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-19 18:36:45,093 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-19 18:36:45,097 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-19 18:36:45,097 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.10 06:36:44" (1/3) ... [2020-10-19 18:36:45,098 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7956a846 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 06:36:45, skipping insertion in model container [2020-10-19 18:36:45,098 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:36:44" (2/3) ... [2020-10-19 18:36:45,098 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7956a846 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 06:36:45, skipping insertion in model container [2020-10-19 18:36:45,098 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:36:45" (3/3) ... [2020-10-19 18:36:45,100 INFO L111 eAbstractionObserver]: Analyzing ICFG num_conversion_2.c [2020-10-19 18:36:45,111 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-19 18:36:45,118 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-10-19 18:36:45,131 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-10-19 18:36:45,155 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-19 18:36:45,155 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-19 18:36:45,155 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-19 18:36:45,155 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 18:36:45,156 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 18:36:45,156 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-19 18:36:45,156 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 18:36:45,156 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-19 18:36:45,172 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-10-19 18:36:45,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-19 18:36:45,178 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:36:45,179 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-19 18:36:45,179 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]=== [2020-10-19 18:36:45,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:36:45,184 INFO L82 PathProgramCache]: Analyzing trace with hash 925796, now seen corresponding path program 1 times [2020-10-19 18:36:45,191 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:36:45,191 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788642181] [2020-10-19 18:36:45,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:36:45,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:36:45,284 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:36:45,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:36:45,302 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:36:45,321 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:36:45,322 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-19 18:36:45,322 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-19 18:36:45,343 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.10 06:36:45 BoogieIcfgContainer [2020-10-19 18:36:45,343 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-19 18:36:45,343 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 18:36:45,343 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 18:36:45,343 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 18:36:45,344 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:36:45" (3/4) ... [2020-10-19 18:36:45,347 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-19 18:36:45,347 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 18:36:45,349 INFO L168 Benchmark]: Toolchain (without parser) took 918.74 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.4 MB). Free memory was 953.3 MB in the beginning and 1.1 GB in the end (delta: -142.4 MB). There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:36:45,350 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 1.0 GB. Free memory is still 980.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:36:45,351 INFO L168 Benchmark]: CACSL2BoogieTranslator took 266.78 ms. Allocated memory is still 1.0 GB. Free memory was 953.3 MB in the beginning and 942.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2020-10-19 18:36:45,352 INFO L168 Benchmark]: Boogie Procedure Inliner took 101.06 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.4 MB). Free memory was 942.5 MB in the beginning and 1.1 GB in the end (delta: -192.1 MB). Peak memory consumption was 15.2 MB. Max. memory is 11.5 GB. [2020-10-19 18:36:45,353 INFO L168 Benchmark]: Boogie Preprocessor took 22.78 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: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2020-10-19 18:36:45,354 INFO L168 Benchmark]: RCFGBuilder took 259.77 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: 19.2 MB). Peak memory consumption was 19.2 MB. Max. memory is 11.5 GB. [2020-10-19 18:36:45,355 INFO L168 Benchmark]: TraceAbstraction took 249.49 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: 13.1 MB). Peak memory consumption was 13.1 MB. Max. memory is 11.5 GB. [2020-10-19 18:36:45,355 INFO L168 Benchmark]: Witness Printer took 3.68 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. [2020-10-19 18:36:45,360 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 1.0 GB. Free memory is still 980.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 266.78 ms. Allocated memory is still 1.0 GB. Free memory was 953.3 MB in the beginning and 942.5 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 101.06 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.4 MB). Free memory was 942.5 MB in the beginning and 1.1 GB in the end (delta: -192.1 MB). Peak memory consumption was 15.2 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 22.78 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: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 259.77 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: 19.2 MB). Peak memory consumption was 19.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 249.49 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: 13.1 MB). Peak memory consumption was 13.1 MB. Max. memory is 11.5 GB. * Witness Printer took 3.68 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: 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: 0.1s, 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=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...