./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/recursive-simple/sum_non.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 30f4e4ab 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/recursive-simple/sum_non.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 d40444e4cd2a33c7365a8211a19737bb4f6f43ea ......................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW) --- Real Ultimate output --- This is Ultimate 0.1.24-30f4e4a [2019-11-28 02:54:08,075 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 02:54:08,078 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 02:54:08,095 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 02:54:08,096 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 02:54:08,097 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 02:54:08,098 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 02:54:08,100 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 02:54:08,103 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 02:54:08,104 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 02:54:08,105 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 02:54:08,106 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 02:54:08,107 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 02:54:08,108 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 02:54:08,109 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 02:54:08,111 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 02:54:08,112 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 02:54:08,113 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 02:54:08,115 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 02:54:08,118 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 02:54:08,122 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 02:54:08,126 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 02:54:08,127 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 02:54:08,130 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 02:54:08,135 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 02:54:08,136 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 02:54:08,136 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 02:54:08,137 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 02:54:08,139 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 02:54:08,140 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 02:54:08,141 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 02:54:08,143 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 02:54:08,144 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 02:54:08,144 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 02:54:08,148 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 02:54:08,150 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 02:54:08,151 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 02:54:08,152 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 02:54:08,152 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 02:54:08,155 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 02:54:08,158 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 02:54:08,159 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2019-11-28 02:54:08,175 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 02:54:08,175 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 02:54:08,178 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 02:54:08,179 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 02:54:08,179 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 02:54:08,180 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 02:54:08,180 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 02:54:08,180 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-28 02:54:08,181 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 02:54:08,181 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 02:54:08,182 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 02:54:08,183 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 02:54:08,183 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 02:54:08,183 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 02:54:08,184 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-11-28 02:54:08,184 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 02:54:08,184 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 02:54:08,185 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 02:54:08,185 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 02:54:08,185 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 02:54:08,186 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 02:54:08,186 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 02:54:08,186 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 02:54:08,187 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 02:54:08,187 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 02:54:08,187 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 02:54:08,188 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 02:54:08,188 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 02:54:08,188 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 02:54:08,189 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 02:54:08,189 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 -> d40444e4cd2a33c7365a8211a19737bb4f6f43ea [2019-11-28 02:54:08,520 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 02:54:08,534 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 02:54:08,538 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 02:54:08,540 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 02:54:08,540 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 02:54:08,542 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive-simple/sum_non.c [2019-11-28 02:54:08,609 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3cea46f8/46ca617bf60441599f3cb0f7219a5875/FLAG38ebf18d8 [2019-11-28 02:54:09,053 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 02:54:09,054 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/sum_non.c [2019-11-28 02:54:09,060 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3cea46f8/46ca617bf60441599f3cb0f7219a5875/FLAG38ebf18d8 [2019-11-28 02:54:09,481 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3cea46f8/46ca617bf60441599f3cb0f7219a5875 [2019-11-28 02:54:09,485 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 02:54:09,488 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 02:54:09,490 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 02:54:09,490 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 02:54:09,494 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 02:54:09,495 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:54:09" (1/1) ... [2019-11-28 02:54:09,498 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@569f7f9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:54:09, skipping insertion in model container [2019-11-28 02:54:09,499 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:54:09" (1/1) ... [2019-11-28 02:54:09,508 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 02:54:09,529 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 02:54:09,712 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 02:54:09,717 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 02:54:09,738 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 02:54:09,755 INFO L208 MainTranslator]: Completed translation [2019-11-28 02:54:09,755 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:54:09 WrapperNode [2019-11-28 02:54:09,756 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 02:54:09,756 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 02:54:09,757 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 02:54:09,757 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 02:54:09,767 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:54:09" (1/1) ... [2019-11-28 02:54:09,772 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:54:09" (1/1) ... [2019-11-28 02:54:09,786 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 02:54:09,787 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 02:54:09,787 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 02:54:09,788 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 02:54:09,854 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:54:09" (1/1) ... [2019-11-28 02:54:09,854 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:54:09" (1/1) ... [2019-11-28 02:54:09,855 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:54:09" (1/1) ... [2019-11-28 02:54:09,856 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:54:09" (1/1) ... [2019-11-28 02:54:09,858 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:54:09" (1/1) ... [2019-11-28 02:54:09,860 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:54:09" (1/1) ... [2019-11-28 02:54:09,861 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:54:09" (1/1) ... [2019-11-28 02:54:09,862 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 02:54:09,862 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 02:54:09,863 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 02:54:09,863 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 02:54:09,864 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:54:09" (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 [2019-11-28 02:54:09,915 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 02:54:09,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 02:54:09,916 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2019-11-28 02:54:09,916 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2019-11-28 02:54:10,120 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 02:54:10,120 INFO L297 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-28 02:54:10,122 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:54:10 BoogieIcfgContainer [2019-11-28 02:54:10,122 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 02:54:10,124 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 02:54:10,124 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 02:54:10,127 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 02:54:10,128 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:54:09" (1/3) ... [2019-11-28 02:54:10,129 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@698c2c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:54:10, skipping insertion in model container [2019-11-28 02:54:10,129 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:54:09" (2/3) ... [2019-11-28 02:54:10,130 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@698c2c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:54:10, skipping insertion in model container [2019-11-28 02:54:10,130 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:54:10" (3/3) ... [2019-11-28 02:54:10,133 INFO L109 eAbstractionObserver]: Analyzing ICFG sum_non.c [2019-11-28 02:54:10,150 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 02:54:10,157 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 8 error locations. [2019-11-28 02:54:10,172 INFO L249 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2019-11-28 02:54:10,216 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 02:54:10,217 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 02:54:10,217 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 02:54:10,217 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 02:54:10,218 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 02:54:10,218 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 02:54:10,218 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 02:54:10,218 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 02:54:10,241 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2019-11-28 02:54:10,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-28 02:54:10,247 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:54:10,248 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-28 02:54:10,256 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 02:54:10,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:54:10,264 INFO L82 PathProgramCache]: Analyzing trace with hash 30702701, now seen corresponding path program 1 times [2019-11-28 02:54:10,273 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:54:10,273 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415521787] [2019-11-28 02:54:10,274 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:54:10,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:54:10,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:54:10,467 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415521787] [2019-11-28 02:54:10,468 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 02:54:10,469 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-28 02:54:10,471 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332064104] [2019-11-28 02:54:10,477 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-28 02:54:10,478 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:54:10,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-28 02:54:10,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-28 02:54:10,500 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 6 states. [2019-11-28 02:54:10,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:54:10,790 INFO L93 Difference]: Finished difference Result 55 states and 58 transitions. [2019-11-28 02:54:10,792 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-28 02:54:10,793 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 5 [2019-11-28 02:54:10,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:54:10,805 INFO L225 Difference]: With dead ends: 55 [2019-11-28 02:54:10,805 INFO L226 Difference]: Without dead ends: 46 [2019-11-28 02:54:10,808 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-11-28 02:54:10,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2019-11-28 02:54:10,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 37. [2019-11-28 02:54:10,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-11-28 02:54:10,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 44 transitions. [2019-11-28 02:54:10,866 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 44 transitions. Word has length 5 [2019-11-28 02:54:10,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:54:10,866 INFO L462 AbstractCegarLoop]: Abstraction has 37 states and 44 transitions. [2019-11-28 02:54:10,867 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-28 02:54:10,868 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 44 transitions. [2019-11-28 02:54:10,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-28 02:54:10,870 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:54:10,870 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-28 02:54:10,871 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 02:54:10,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:54:10,872 INFO L82 PathProgramCache]: Analyzing trace with hash 30702861, now seen corresponding path program 1 times [2019-11-28 02:54:10,873 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:54:10,873 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923531175] [2019-11-28 02:54:10,873 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:54:10,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:54:10,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:54:10,939 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923531175] [2019-11-28 02:54:10,940 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 02:54:10,940 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 02:54:10,940 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261629867] [2019-11-28 02:54:10,942 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-28 02:54:10,943 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:54:10,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 02:54:10,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-28 02:54:10,944 INFO L87 Difference]: Start difference. First operand 37 states and 44 transitions. Second operand 5 states. [2019-11-28 02:54:11,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:54:11,063 INFO L93 Difference]: Finished difference Result 37 states and 44 transitions. [2019-11-28 02:54:11,065 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 02:54:11,065 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 5 [2019-11-28 02:54:11,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:54:11,066 INFO L225 Difference]: With dead ends: 37 [2019-11-28 02:54:11,066 INFO L226 Difference]: Without dead ends: 36 [2019-11-28 02:54:11,069 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-28 02:54:11,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-11-28 02:54:11,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2019-11-28 02:54:11,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-11-28 02:54:11,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2019-11-28 02:54:11,086 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 5 [2019-11-28 02:54:11,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:54:11,086 INFO L462 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2019-11-28 02:54:11,087 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-28 02:54:11,087 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2019-11-28 02:54:11,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-28 02:54:11,087 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:54:11,087 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-28 02:54:11,088 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 02:54:11,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:54:11,088 INFO L82 PathProgramCache]: Analyzing trace with hash 951783786, now seen corresponding path program 1 times [2019-11-28 02:54:11,089 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:54:11,089 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276827674] [2019-11-28 02:54:11,089 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:54:11,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:54:11,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:54:11,123 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:54:11,123 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-28 02:54:11,148 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 02:54:11 BoogieIcfgContainer [2019-11-28 02:54:11,148 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 02:54:11,148 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 02:54:11,149 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 02:54:11,149 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 02:54:11,149 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:54:10" (3/4) ... [2019-11-28 02:54:11,152 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-28 02:54:11,190 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 02:54:11,190 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 02:54:11,193 INFO L168 Benchmark]: Toolchain (without parser) took 1705.09 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 154.1 MB). Free memory was 953.7 MB in the beginning and 1.1 GB in the end (delta: -120.9 MB). Peak memory consumption was 33.3 MB. Max. memory is 11.5 GB. [2019-11-28 02:54:11,194 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 02:54:11,195 INFO L168 Benchmark]: CACSL2BoogieTranslator took 266.04 ms. Allocated memory is still 1.0 GB. Free memory was 953.7 MB in the beginning and 942.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-28 02:54:11,195 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.47 ms. Allocated memory is still 1.0 GB. Free memory is still 942.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 02:54:11,196 INFO L168 Benchmark]: Boogie Preprocessor took 74.99 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 154.1 MB). Free memory was 942.9 MB in the beginning and 1.1 GB in the end (delta: -201.3 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. [2019-11-28 02:54:11,197 INFO L168 Benchmark]: RCFGBuilder took 260.00 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: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 11.5 GB. [2019-11-28 02:54:11,198 INFO L168 Benchmark]: TraceAbstraction took 1024.25 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: 52.3 MB). Peak memory consumption was 52.3 MB. Max. memory is 11.5 GB. [2019-11-28 02:54:11,198 INFO L168 Benchmark]: Witness Printer took 41.86 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. [2019-11-28 02:54:11,203 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 266.04 ms. Allocated memory is still 1.0 GB. Free memory was 953.7 MB in the beginning and 942.9 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 30.47 ms. Allocated memory is still 1.0 GB. Free memory is still 942.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 74.99 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 154.1 MB). Free memory was 942.9 MB in the beginning and 1.1 GB in the end (delta: -201.3 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. * RCFGBuilder took 260.00 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: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1024.25 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: 52.3 MB). Peak memory consumption was 52.3 MB. Max. memory is 11.5 GB. * Witness Printer took 41.86 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: - CounterExampleResult [Line: 6]: integer overflow possible integer overflow possible We found a FailurePath: [L13] int a = __VERIFIER_nondet_int(); [L14] int b = __VERIFIER_nondet_int(); [L15] CALL sum(a, b) VAL [\old(m)=-2147483648, \old(n)=-1] [L5] COND TRUE n <= 0 VAL [\old(m)=-2147483648, \old(n)=-1, m=-2147483648, n=-1] [L6] m + n VAL [\old(m)=-2147483648, \old(n)=-1, m=-2147483648, n=-1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 30 locations, 8 error locations. Result: UNSAFE, OverallTime: 0.9s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 29 SDtfs, 87 SDslu, 64 SDs, 0 SdLazy, 111 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=1, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 9 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 16 NumberOfCodeBlocks, 16 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 104 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...