./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/recursive-simple/sum_non_eq-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version f470102c 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_eq-1.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 c3f4ddad1399519940e721d52a976bc45ffd3619 ..................................................................................................................................................................................................................................................................... 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 0.1.25-f470102 [2019-11-28 20:26:40,724 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 20:26:40,726 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 20:26:40,737 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 20:26:40,737 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 20:26:40,738 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 20:26:40,740 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 20:26:40,742 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 20:26:40,743 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 20:26:40,744 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 20:26:40,745 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 20:26:40,746 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 20:26:40,747 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 20:26:40,748 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 20:26:40,749 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 20:26:40,750 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 20:26:40,751 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 20:26:40,752 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 20:26:40,754 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 20:26:40,756 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 20:26:40,757 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 20:26:40,759 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 20:26:40,760 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 20:26:40,761 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 20:26:40,763 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 20:26:40,764 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 20:26:40,764 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 20:26:40,765 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 20:26:40,765 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 20:26:40,767 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 20:26:40,767 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 20:26:40,768 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 20:26:40,769 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 20:26:40,770 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 20:26:40,771 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 20:26:40,771 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 20:26:40,772 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 20:26:40,772 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 20:26:40,773 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 20:26:40,774 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 20:26:40,774 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 20:26:40,775 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2019-11-28 20:26:40,791 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 20:26:40,791 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 20:26:40,792 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 20:26:40,792 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 20:26:40,793 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 20:26:40,793 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 20:26:40,793 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 20:26:40,794 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-28 20:26:40,794 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 20:26:40,794 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 20:26:40,794 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 20:26:40,794 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 20:26:40,795 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 20:26:40,795 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 20:26:40,795 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-11-28 20:26:40,795 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 20:26:40,796 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 20:26:40,796 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 20:26:40,796 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 20:26:40,796 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 20:26:40,797 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 20:26:40,797 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 20:26:40,797 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 20:26:40,797 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 20:26:40,798 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 20:26:40,798 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 20:26:40,798 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 20:26:40,798 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 20:26:40,798 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 20:26:40,799 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 20:26:40,799 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 20:26:40,799 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 -> c3f4ddad1399519940e721d52a976bc45ffd3619 [2019-11-28 20:26:41,137 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 20:26:41,150 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 20:26:41,153 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 20:26:41,154 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 20:26:41,155 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 20:26:41,156 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive-simple/sum_non_eq-1.c [2019-11-28 20:26:41,212 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1782bf25a/868ddab8daaf4054bea1d0262470bd62/FLAGf481bcac0 [2019-11-28 20:26:41,643 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 20:26:41,644 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/sum_non_eq-1.c [2019-11-28 20:26:41,651 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1782bf25a/868ddab8daaf4054bea1d0262470bd62/FLAGf481bcac0 [2019-11-28 20:26:42,038 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1782bf25a/868ddab8daaf4054bea1d0262470bd62 [2019-11-28 20:26:42,041 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 20:26:42,043 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 20:26:42,047 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 20:26:42,047 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 20:26:42,053 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 20:26:42,054 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:26:42" (1/1) ... [2019-11-28 20:26:42,057 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75c5318a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:26:42, skipping insertion in model container [2019-11-28 20:26:42,057 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:26:42" (1/1) ... [2019-11-28 20:26:42,066 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 20:26:42,086 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 20:26:42,250 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 20:26:42,254 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 20:26:42,269 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 20:26:42,282 INFO L208 MainTranslator]: Completed translation [2019-11-28 20:26:42,282 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:26:42 WrapperNode [2019-11-28 20:26:42,283 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 20:26:42,283 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 20:26:42,283 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 20:26:42,284 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 20:26:42,292 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:26:42" (1/1) ... [2019-11-28 20:26:42,297 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:26:42" (1/1) ... [2019-11-28 20:26:42,313 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 20:26:42,313 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 20:26:42,313 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 20:26:42,314 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 20:26:42,380 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:26:42" (1/1) ... [2019-11-28 20:26:42,380 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:26:42" (1/1) ... [2019-11-28 20:26:42,381 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:26:42" (1/1) ... [2019-11-28 20:26:42,382 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:26:42" (1/1) ... [2019-11-28 20:26:42,385 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:26:42" (1/1) ... [2019-11-28 20:26:42,387 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:26:42" (1/1) ... [2019-11-28 20:26:42,391 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:26:42" (1/1) ... [2019-11-28 20:26:42,392 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 20:26:42,393 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 20:26:42,393 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 20:26:42,394 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 20:26:42,394 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:26:42" (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 20:26:42,442 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 20:26:42,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 20:26:42,443 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2019-11-28 20:26:42,443 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2019-11-28 20:26:42,638 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 20:26:42,639 INFO L287 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-28 20:26:42,641 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:26:42 BoogieIcfgContainer [2019-11-28 20:26:42,641 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 20:26:42,643 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 20:26:42,643 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 20:26:42,650 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 20:26:42,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 08:26:42" (1/3) ... [2019-11-28 20:26:42,657 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@220ed8b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 08:26:42, skipping insertion in model container [2019-11-28 20:26:42,657 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:26:42" (2/3) ... [2019-11-28 20:26:42,658 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@220ed8b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 08:26:42, skipping insertion in model container [2019-11-28 20:26:42,658 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:26:42" (3/3) ... [2019-11-28 20:26:42,660 INFO L109 eAbstractionObserver]: Analyzing ICFG sum_non_eq-1.c [2019-11-28 20:26:42,694 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 20:26:42,707 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2019-11-28 20:26:42,727 INFO L249 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-11-28 20:26:42,749 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 20:26:42,749 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 20:26:42,749 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 20:26:42,749 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 20:26:42,749 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 20:26:42,750 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 20:26:42,750 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 20:26:42,750 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 20:26:42,766 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2019-11-28 20:26:42,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-28 20:26:42,770 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:26:42,771 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-28 20:26:42,771 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]=== [2019-11-28 20:26:42,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:26:42,777 INFO L82 PathProgramCache]: Analyzing trace with hash 30583569, now seen corresponding path program 1 times [2019-11-28 20:26:42,784 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:26:42,784 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364772533] [2019-11-28 20:26:42,785 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:26:42,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:26:42,972 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 20:26:42,973 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364772533] [2019-11-28 20:26:42,974 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:26:42,974 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 20:26:42,977 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147782545] [2019-11-28 20:26:42,982 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-28 20:26:42,982 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:26:42,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 20:26:42,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-28 20:26:43,001 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 5 states. [2019-11-28 20:26:43,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:26:43,097 INFO L93 Difference]: Finished difference Result 29 states and 30 transitions. [2019-11-28 20:26:43,098 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 20:26:43,099 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 5 [2019-11-28 20:26:43,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:26:43,107 INFO L225 Difference]: With dead ends: 29 [2019-11-28 20:26:43,107 INFO L226 Difference]: Without dead ends: 20 [2019-11-28 20:26:43,110 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 20:26:43,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-11-28 20:26:43,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2019-11-28 20:26:43,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-11-28 20:26:43,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2019-11-28 20:26:43,148 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 5 [2019-11-28 20:26:43,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:26:43,149 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2019-11-28 20:26:43,149 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-28 20:26:43,149 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2019-11-28 20:26:43,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-28 20:26:43,150 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:26:43,150 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-28 20:26:43,151 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]=== [2019-11-28 20:26:43,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:26:43,151 INFO L82 PathProgramCache]: Analyzing trace with hash 948090695, now seen corresponding path program 1 times [2019-11-28 20:26:43,152 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:26:43,152 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323821504] [2019-11-28 20:26:43,152 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:26:43,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:26:43,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:26:43,186 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:26:43,186 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-28 20:26:43,206 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 08:26:43 BoogieIcfgContainer [2019-11-28 20:26:43,206 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 20:26:43,206 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 20:26:43,206 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 20:26:43,207 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 20:26:43,207 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:26:42" (3/4) ... [2019-11-28 20:26:43,209 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-28 20:26:43,245 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 20:26:43,245 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 20:26:43,247 INFO L168 Benchmark]: Toolchain (without parser) took 1204.19 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 128.5 MB). Free memory was 961.7 MB in the beginning and 1.1 GB in the end (delta: -110.6 MB). Peak memory consumption was 17.9 MB. Max. memory is 11.5 GB. [2019-11-28 20:26:43,248 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 20:26:43,249 INFO L168 Benchmark]: CACSL2BoogieTranslator took 235.86 ms. Allocated memory is still 1.0 GB. Free memory was 961.7 MB in the beginning and 951.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-28 20:26:43,249 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.91 ms. Allocated memory is still 1.0 GB. Free memory is still 951.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 20:26:43,250 INFO L168 Benchmark]: Boogie Preprocessor took 79.05 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 128.5 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -167.5 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. [2019-11-28 20:26:43,251 INFO L168 Benchmark]: RCFGBuilder took 248.88 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. [2019-11-28 20:26:43,252 INFO L168 Benchmark]: TraceAbstraction took 562.96 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: 32.8 MB). Peak memory consumption was 32.8 MB. Max. memory is 11.5 GB. [2019-11-28 20:26:43,252 INFO L168 Benchmark]: Witness Printer took 38.95 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 20:26:43,256 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 235.86 ms. Allocated memory is still 1.0 GB. Free memory was 961.7 MB in the beginning and 951.0 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 29.91 ms. Allocated memory is still 1.0 GB. Free memory is still 951.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 79.05 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 128.5 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -167.5 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. * RCFGBuilder took 248.88 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 562.96 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: 32.8 MB). Peak memory consumption was 32.8 MB. Max. memory is 11.5 GB. * Witness Printer took 38.95 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: 8]: 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)=0, \old(n)=-2147483648] [L5] COND FALSE !(n == 0) VAL [\old(m)=0, \old(n)=-2147483648, m=0, n=-2147483648] [L8] n - 1 VAL [\old(m)=0, \old(n)=-2147483648, m=0, n=-2147483648] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 26 locations, 6 error locations. Result: UNSAFE, OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 12 SDtfs, 31 SDslu, 16 SDs, 0 SdLazy, 37 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred 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: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 48 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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...