./Ultimate.py --spec ../../sv-benchmarks/c/NoOverflows.prp --file ../../sv-benchmarks/c/recursive-simple/sum_non_false-no-overflow.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_d9012a1d-7991-4223-bc06-1ab7328428c4/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_d9012a1d-7991-4223-bc06-1ab7328428c4/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_d9012a1d-7991-4223-bc06-1ab7328428c4/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_d9012a1d-7991-4223-bc06-1ab7328428c4/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive-simple/sum_non_false-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_d9012a1d-7991-4223-bc06-1ab7328428c4/bin-2019/uautomizer/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_d9012a1d-7991-4223-bc06-1ab7328428c4/bin-2019/uautomizer --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 0.1.23-1dbac8b [2018-11-10 11:56:16,166 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 11:56:16,167 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 11:56:16,173 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-10 11:56:16,173 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-10 11:56:16,174 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-10 11:56:16,175 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-10 11:56:16,176 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-10 11:56:16,177 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-10 11:56:16,178 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-10 11:56:16,178 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-10 11:56:16,178 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 11:56:16,179 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 11:56:16,180 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 11:56:16,181 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 11:56:16,181 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 11:56:16,182 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 11:56:16,183 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 11:56:16,184 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 11:56:16,185 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 11:56:16,186 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 11:56:16,187 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 11:56:16,188 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 11:56:16,189 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 11:56:16,189 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 11:56:16,189 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 11:56:16,190 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 11:56:16,191 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 11:56:16,191 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 11:56:16,192 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 11:56:16,192 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 11:56:16,192 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 11:56:16,193 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 11:56:16,193 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 11:56:16,193 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 11:56:16,194 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 11:56:16,194 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_d9012a1d-7991-4223-bc06-1ab7328428c4/bin-2019/uautomizer/config/svcomp-Overflow-32bit-Automizer_Default.epf [2018-11-10 11:56:16,204 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 11:56:16,205 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 11:56:16,205 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-10 11:56:16,205 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-10 11:56:16,206 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-10 11:56:16,206 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-10 11:56:16,206 INFO L133 SettingsManager]: * Use SBE=true [2018-11-10 11:56:16,206 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 11:56:16,206 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-10 11:56:16,207 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-10 11:56:16,207 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-10 11:56:16,207 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-10 11:56:16,207 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 11:56:16,207 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-10 11:56:16,207 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-10 11:56:16,207 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-10 11:56:16,208 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2018-11-10 11:56:16,208 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-10 11:56:16,208 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-10 11:56:16,208 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-10 11:56:16,208 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 11:56:16,208 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-10 11:56:16,208 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-10 11:56:16,208 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-10 11:56:16,209 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 11:56:16,209 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 11:56:16,209 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-10 11:56:16,209 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-10 11:56:16,209 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-10 11:56:16,209 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-10 11:56:16,209 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-10 11:56:16,209 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true 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 -> /tmp/vcloud-vcloud-master/worker/working_dir_d9012a1d-7991-4223-bc06-1ab7328428c4/bin-2019/uautomizer 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 [2018-11-10 11:56:16,234 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 11:56:16,243 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 11:56:16,245 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 11:56:16,247 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 11:56:16,247 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 11:56:16,247 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_d9012a1d-7991-4223-bc06-1ab7328428c4/bin-2019/uautomizer/../../sv-benchmarks/c/recursive-simple/sum_non_false-no-overflow.c [2018-11-10 11:56:16,292 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_d9012a1d-7991-4223-bc06-1ab7328428c4/bin-2019/uautomizer/data/8cc523c0e/5050d2ff07634838a12b2ed2a0dae9e0/FLAG42a221644 [2018-11-10 11:56:16,593 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 11:56:16,594 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_d9012a1d-7991-4223-bc06-1ab7328428c4/sv-benchmarks/c/recursive-simple/sum_non_false-no-overflow.c [2018-11-10 11:56:16,598 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_d9012a1d-7991-4223-bc06-1ab7328428c4/bin-2019/uautomizer/data/8cc523c0e/5050d2ff07634838a12b2ed2a0dae9e0/FLAG42a221644 [2018-11-10 11:56:16,608 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_d9012a1d-7991-4223-bc06-1ab7328428c4/bin-2019/uautomizer/data/8cc523c0e/5050d2ff07634838a12b2ed2a0dae9e0 [2018-11-10 11:56:16,610 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 11:56:16,611 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-10 11:56:16,612 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 11:56:16,612 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 11:56:16,614 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 11:56:16,615 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 11:56:16" (1/1) ... [2018-11-10 11:56:16,616 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44d995a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:56:16, skipping insertion in model container [2018-11-10 11:56:16,617 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 11:56:16" (1/1) ... [2018-11-10 11:56:16,623 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 11:56:16,633 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 11:56:16,731 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 11:56:16,734 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 11:56:16,743 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 11:56:16,752 INFO L193 MainTranslator]: Completed translation [2018-11-10 11:56:16,752 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:56:16 WrapperNode [2018-11-10 11:56:16,752 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-10 11:56:16,753 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-10 11:56:16,753 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-10 11:56:16,753 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-10 11:56:16,761 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:56:16" (1/1) ... [2018-11-10 11:56:16,761 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:56:16" (1/1) ... [2018-11-10 11:56:16,764 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:56:16" (1/1) ... [2018-11-10 11:56:16,764 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:56:16" (1/1) ... [2018-11-10 11:56:16,766 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:56:16" (1/1) ... [2018-11-10 11:56:16,768 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:56:16" (1/1) ... [2018-11-10 11:56:16,768 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:56:16" (1/1) ... [2018-11-10 11:56:16,770 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-10 11:56:16,770 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-10 11:56:16,770 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-10 11:56:16,770 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-10 11:56:16,771 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:56:16" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d9012a1d-7991-4223-bc06-1ab7328428c4/bin-2019/uautomizer/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 [2018-11-10 11:56:16,837 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-10 11:56:16,837 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-10 11:56:16,837 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2018-11-10 11:56:16,837 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-10 11:56:16,837 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-11-10 11:56:16,837 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-10 11:56:16,838 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2018-11-10 11:56:16,838 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-10 11:56:16,838 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-10 11:56:16,838 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-10 11:56:16,936 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-10 11:56:16,937 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 11:56:16 BoogieIcfgContainer [2018-11-10 11:56:16,937 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-10 11:56:16,938 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-10 11:56:16,938 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-10 11:56:16,940 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-10 11:56:16,940 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 11:56:16" (1/3) ... [2018-11-10 11:56:16,941 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bf1ce85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 11:56:16, skipping insertion in model container [2018-11-10 11:56:16,941 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:56:16" (2/3) ... [2018-11-10 11:56:16,942 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bf1ce85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 11:56:16, skipping insertion in model container [2018-11-10 11:56:16,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 11:56:16" (3/3) ... [2018-11-10 11:56:16,943 INFO L112 eAbstractionObserver]: Analyzing ICFG sum_non_false-no-overflow.c [2018-11-10 11:56:16,948 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-10 11:56:16,953 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 8 error locations. [2018-11-10 11:56:16,961 INFO L257 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2018-11-10 11:56:16,979 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-10 11:56:16,980 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-10 11:56:16,980 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-10 11:56:16,980 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-10 11:56:16,980 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-10 11:56:16,980 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-10 11:56:16,980 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-10 11:56:16,981 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-10 11:56:16,981 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-10 11:56:16,993 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2018-11-10 11:56:16,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-11-10 11:56:16,996 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 11:56:16,997 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 11:56:16,998 INFO L424 AbstractCegarLoop]: === Iteration 1 === [sumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 11:56:17,003 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 11:56:17,003 INFO L82 PathProgramCache]: Analyzing trace with hash -521339435, now seen corresponding path program 1 times [2018-11-10 11:56:17,005 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 11:56:17,005 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 11:56:17,036 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:56:17,036 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 11:56:17,036 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:56:17,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 11:56:17,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 11:56:17,143 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 11:56:17,143 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-10 11:56:17,146 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-10 11:56:17,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-10 11:56:17,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-11-10 11:56:17,155 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 6 states. [2018-11-10 11:56:17,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 11:56:17,327 INFO L93 Difference]: Finished difference Result 61 states and 64 transitions. [2018-11-10 11:56:17,328 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-10 11:56:17,328 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2018-11-10 11:56:17,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 11:56:17,336 INFO L225 Difference]: With dead ends: 61 [2018-11-10 11:56:17,336 INFO L226 Difference]: Without dead ends: 50 [2018-11-10 11:56:17,338 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-10 11:56:17,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2018-11-10 11:56:17,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 41. [2018-11-10 11:56:17,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-11-10 11:56:17,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 48 transitions. [2018-11-10 11:56:17,364 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 48 transitions. Word has length 9 [2018-11-10 11:56:17,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 11:56:17,364 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 48 transitions. [2018-11-10 11:56:17,364 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-10 11:56:17,364 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 48 transitions. [2018-11-10 11:56:17,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-11-10 11:56:17,365 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 11:56:17,365 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 11:56:17,365 INFO L424 AbstractCegarLoop]: === Iteration 2 === [sumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 11:56:17,366 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 11:56:17,366 INFO L82 PathProgramCache]: Analyzing trace with hash -521339275, now seen corresponding path program 1 times [2018-11-10 11:56:17,366 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 11:56:17,366 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 11:56:17,367 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:56:17,367 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 11:56:17,367 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:56:17,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 11:56:17,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 11:56:17,396 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 11:56:17,396 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-10 11:56:17,397 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-10 11:56:17,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-10 11:56:17,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-10 11:56:17,397 INFO L87 Difference]: Start difference. First operand 41 states and 48 transitions. Second operand 5 states. [2018-11-10 11:56:17,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 11:56:17,445 INFO L93 Difference]: Finished difference Result 41 states and 48 transitions. [2018-11-10 11:56:17,446 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-10 11:56:17,446 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2018-11-10 11:56:17,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 11:56:17,447 INFO L225 Difference]: With dead ends: 41 [2018-11-10 11:56:17,447 INFO L226 Difference]: Without dead ends: 40 [2018-11-10 11:56:17,447 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-10 11:56:17,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-11-10 11:56:17,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-11-10 11:56:17,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-11-10 11:56:17,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2018-11-10 11:56:17,454 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 9 [2018-11-10 11:56:17,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 11:56:17,454 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2018-11-10 11:56:17,454 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-10 11:56:17,454 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2018-11-10 11:56:17,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-10 11:56:17,455 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 11:56:17,455 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 11:56:17,455 INFO L424 AbstractCegarLoop]: === Iteration 3 === [sumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 11:56:17,455 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 11:56:17,455 INFO L82 PathProgramCache]: Analyzing trace with hash 1018346740, now seen corresponding path program 1 times [2018-11-10 11:56:17,456 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 11:56:17,456 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 11:56:17,456 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:56:17,456 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 11:56:17,457 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:56:17,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 11:56:17,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 11:56:17,481 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-10 11:56:17,498 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 11:56:17 BoogieIcfgContainer [2018-11-10 11:56:17,498 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-10 11:56:17,499 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-10 11:56:17,499 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-10 11:56:17,499 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-10 11:56:17,499 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 11:56:16" (3/4) ... [2018-11-10 11:56:17,501 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-10 11:56:17,525 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_d9012a1d-7991-4223-bc06-1ab7328428c4/bin-2019/uautomizer/witness.graphml [2018-11-10 11:56:17,525 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-10 11:56:17,526 INFO L168 Benchmark]: Toolchain (without parser) took 915.42 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 152.6 MB). Free memory was 960.2 MB in the beginning and 1.1 GB in the end (delta: -117.3 MB). Peak memory consumption was 35.3 MB. Max. memory is 11.5 GB. [2018-11-10 11:56:17,527 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 11:56:17,527 INFO L168 Benchmark]: CACSL2BoogieTranslator took 140.62 ms. Allocated memory is still 1.0 GB. Free memory was 960.2 MB in the beginning and 949.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-10 11:56:17,528 INFO L168 Benchmark]: Boogie Preprocessor took 17.01 ms. Allocated memory is still 1.0 GB. Free memory is still 949.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 11:56:17,528 INFO L168 Benchmark]: RCFGBuilder took 166.93 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 152.6 MB). Free memory was 949.5 MB in the beginning and 1.1 GB in the end (delta: -189.8 MB). Peak memory consumption was 22.3 MB. Max. memory is 11.5 GB. [2018-11-10 11:56:17,528 INFO L168 Benchmark]: TraceAbstraction took 560.80 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: 58.5 MB). Peak memory consumption was 58.5 MB. Max. memory is 11.5 GB. [2018-11-10 11:56:17,529 INFO L168 Benchmark]: Witness Printer took 26.70 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: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 11.5 GB. [2018-11-10 11:56:17,530 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 140.62 ms. Allocated memory is still 1.0 GB. Free memory was 960.2 MB in the beginning and 949.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 17.01 ms. Allocated memory is still 1.0 GB. Free memory is still 949.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 166.93 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 152.6 MB). Free memory was 949.5 MB in the beginning and 1.1 GB in the end (delta: -189.8 MB). Peak memory consumption was 22.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 560.80 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: 58.5 MB). Peak memory consumption was 58.5 MB. Max. memory is 11.5 GB. * Witness Printer took 26.70 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: 3.3 MB). Peak memory consumption was 3.3 MB. 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)=-1, \old(n)=-2147483648] [L5] COND TRUE n <= 0 VAL [\old(m)=-1, \old(n)=-2147483648, m=-1, n=-2147483648] [L6] m + n VAL [\old(m)=-1, \old(n)=-2147483648, m=-1, n=-2147483648] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 35 locations, 8 error locations. UNSAFE Result, 0.5s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 38 SDtfs, 86 SDslu, 97 SDs, 0 SdLazy, 111 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred in iteration=1, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 9 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 272 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...