./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursive-simple/id_b5_o10-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_963da77f-3934-4863-8620-64c583cb18f1/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_963da77f-3934-4863-8620-64c583cb18f1/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_963da77f-3934-4863-8620-64c583cb18f1/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_963da77f-3934-4863-8620-64c583cb18f1/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive-simple/id_b5_o10-1.c -s /tmp/vcloud-vcloud-master/worker/working_dir_963da77f-3934-4863-8620-64c583cb18f1/bin/uautomizer/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_963da77f-3934-4863-8620-64c583cb18f1/bin/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 08bbe2c494adbfbcc4d1f2aa863ee46abea55656 ...................................................................................................................................................................................................................................................................... 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-cad4683 [2019-10-22 09:02:17,199 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 09:02:17,200 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 09:02:17,209 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 09:02:17,209 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 09:02:17,210 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 09:02:17,211 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 09:02:17,213 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 09:02:17,215 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 09:02:17,215 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 09:02:17,216 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 09:02:17,217 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 09:02:17,217 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 09:02:17,218 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 09:02:17,219 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 09:02:17,220 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 09:02:17,221 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 09:02:17,221 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 09:02:17,223 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 09:02:17,224 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 09:02:17,226 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 09:02:17,227 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 09:02:17,228 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 09:02:17,228 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 09:02:17,230 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 09:02:17,230 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 09:02:17,231 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 09:02:17,231 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 09:02:17,232 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 09:02:17,233 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 09:02:17,233 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 09:02:17,233 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 09:02:17,234 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 09:02:17,235 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 09:02:17,236 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 09:02:17,236 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 09:02:17,236 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 09:02:17,237 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 09:02:17,237 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 09:02:17,238 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 09:02:17,238 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 09:02:17,239 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_963da77f-3934-4863-8620-64c583cb18f1/bin/uautomizer/config/svcomp-Overflow-32bit-Automizer_Default.epf [2019-10-22 09:02:17,250 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 09:02:17,250 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 09:02:17,251 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 09:02:17,251 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 09:02:17,251 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 09:02:17,252 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 09:02:17,252 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 09:02:17,252 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-10-22 09:02:17,252 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 09:02:17,252 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 09:02:17,252 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 09:02:17,253 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 09:02:17,253 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 09:02:17,253 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 09:02:17,253 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-10-22 09:02:17,253 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 09:02:17,253 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 09:02:17,254 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 09:02:17,254 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 09:02:17,254 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 09:02:17,254 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 09:02:17,255 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 09:02:17,255 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 09:02:17,255 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 09:02:17,255 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 09:02:17,255 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 09:02:17,256 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 09:02:17,256 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 09:02:17,256 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 09:02:17,256 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 09:02:17,256 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 -> /tmp/vcloud-vcloud-master/worker/working_dir_963da77f-3934-4863-8620-64c583cb18f1/bin/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 -> 08bbe2c494adbfbcc4d1f2aa863ee46abea55656 [2019-10-22 09:02:17,280 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 09:02:17,290 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 09:02:17,293 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 09:02:17,294 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 09:02:17,295 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 09:02:17,295 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_963da77f-3934-4863-8620-64c583cb18f1/bin/uautomizer/../../sv-benchmarks/c/recursive-simple/id_b5_o10-1.c [2019-10-22 09:02:17,342 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_963da77f-3934-4863-8620-64c583cb18f1/bin/uautomizer/data/4bd8d2af0/2faaddf560724dc4b9fbe2b2c6800335/FLAG9505d3fde [2019-10-22 09:02:17,712 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 09:02:17,713 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_963da77f-3934-4863-8620-64c583cb18f1/sv-benchmarks/c/recursive-simple/id_b5_o10-1.c [2019-10-22 09:02:17,718 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_963da77f-3934-4863-8620-64c583cb18f1/bin/uautomizer/data/4bd8d2af0/2faaddf560724dc4b9fbe2b2c6800335/FLAG9505d3fde [2019-10-22 09:02:18,132 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_963da77f-3934-4863-8620-64c583cb18f1/bin/uautomizer/data/4bd8d2af0/2faaddf560724dc4b9fbe2b2c6800335 [2019-10-22 09:02:18,135 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 09:02:18,136 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 09:02:18,137 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 09:02:18,137 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 09:02:18,142 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 09:02:18,144 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 09:02:18" (1/1) ... [2019-10-22 09:02:18,145 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32531fc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:18, skipping insertion in model container [2019-10-22 09:02:18,146 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 09:02:18" (1/1) ... [2019-10-22 09:02:18,152 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 09:02:18,165 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 09:02:18,302 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 09:02:18,305 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 09:02:18,369 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 09:02:18,384 INFO L192 MainTranslator]: Completed translation [2019-10-22 09:02:18,385 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:18 WrapperNode [2019-10-22 09:02:18,385 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 09:02:18,386 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 09:02:18,386 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 09:02:18,386 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 09:02:18,397 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:18" (1/1) ... [2019-10-22 09:02:18,401 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:18" (1/1) ... [2019-10-22 09:02:18,416 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 09:02:18,417 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 09:02:18,417 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 09:02:18,417 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 09:02:18,427 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:18" (1/1) ... [2019-10-22 09:02:18,428 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:18" (1/1) ... [2019-10-22 09:02:18,428 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:18" (1/1) ... [2019-10-22 09:02:18,428 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:18" (1/1) ... [2019-10-22 09:02:18,430 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:18" (1/1) ... [2019-10-22 09:02:18,432 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:18" (1/1) ... [2019-10-22 09:02:18,433 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:18" (1/1) ... [2019-10-22 09:02:18,434 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 09:02:18,435 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 09:02:18,435 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 09:02:18,435 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 09:02:18,436 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:18" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_963da77f-3934-4863-8620-64c583cb18f1/bin/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 [2019-10-22 09:02:18,489 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 09:02:18,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 09:02:18,489 INFO L130 BoogieDeclarations]: Found specification of procedure id [2019-10-22 09:02:18,489 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2019-10-22 09:02:18,745 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 09:02:18,745 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-22 09:02:18,746 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:02:18 BoogieIcfgContainer [2019-10-22 09:02:18,749 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 09:02:18,751 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 09:02:18,752 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 09:02:18,754 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 09:02:18,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 09:02:18" (1/3) ... [2019-10-22 09:02:18,755 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19e9dac9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 09:02:18, skipping insertion in model container [2019-10-22 09:02:18,755 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:18" (2/3) ... [2019-10-22 09:02:18,756 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19e9dac9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 09:02:18, skipping insertion in model container [2019-10-22 09:02:18,756 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:02:18" (3/3) ... [2019-10-22 09:02:18,759 INFO L109 eAbstractionObserver]: Analyzing ICFG id_b5_o10-1.c [2019-10-22 09:02:18,768 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 09:02:18,776 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-10-22 09:02:18,785 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-10-22 09:02:18,807 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 09:02:18,807 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 09:02:18,807 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 09:02:18,807 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 09:02:18,809 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 09:02:18,809 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 09:02:18,809 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 09:02:18,809 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 09:02:18,822 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2019-10-22 09:02:18,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-10-22 09:02:18,825 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:02:18,826 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-10-22 09:02:18,827 INFO L410 AbstractCegarLoop]: === Iteration 1 === [idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 09:02:18,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:18,832 INFO L82 PathProgramCache]: Analyzing trace with hash 30579597, now seen corresponding path program 1 times [2019-10-22 09:02:18,839 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:18,839 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163651848] [2019-10-22 09:02:18,839 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:18,839 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:18,840 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:18,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:18,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:02:18,967 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163651848] [2019-10-22 09:02:18,967 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:02:18,968 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 09:02:18,968 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734796056] [2019-10-22 09:02:18,972 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 09:02:18,973 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:02:18,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 09:02:18,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 09:02:18,986 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 5 states. [2019-10-22 09:02:19,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:02:19,051 INFO L93 Difference]: Finished difference Result 26 states and 28 transitions. [2019-10-22 09:02:19,052 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 09:02:19,053 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 5 [2019-10-22 09:02:19,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:02:19,061 INFO L225 Difference]: With dead ends: 26 [2019-10-22 09:02:19,061 INFO L226 Difference]: Without dead ends: 16 [2019-10-22 09:02:19,064 INFO L600 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 [2019-10-22 09:02:19,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-10-22 09:02:19,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-10-22 09:02:19,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-10-22 09:02:19,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2019-10-22 09:02:19,099 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 5 [2019-10-22 09:02:19,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:02:19,099 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2019-10-22 09:02:19,099 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 09:02:19,099 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2019-10-22 09:02:19,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-10-22 09:02:19,100 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:02:19,100 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-10-22 09:02:19,100 INFO L410 AbstractCegarLoop]: === Iteration 2 === [idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 09:02:19,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:19,101 INFO L82 PathProgramCache]: Analyzing trace with hash 947967559, now seen corresponding path program 1 times [2019-10-22 09:02:19,101 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:19,101 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375107464] [2019-10-22 09:02:19,101 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:19,101 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:19,102 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:19,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:19,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:19,128 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 09:02:19,128 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-10-22 09:02:19,155 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 09:02:19 BoogieIcfgContainer [2019-10-22 09:02:19,155 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 09:02:19,155 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 09:02:19,155 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 09:02:19,156 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 09:02:19,156 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:02:18" (3/4) ... [2019-10-22 09:02:19,159 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-10-22 09:02:19,199 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_963da77f-3934-4863-8620-64c583cb18f1/bin/uautomizer/witness.graphml [2019-10-22 09:02:19,200 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 09:02:19,202 INFO L168 Benchmark]: Toolchain (without parser) took 1064.84 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 121.6 MB). Free memory was 944.5 MB in the beginning and 1.1 GB in the end (delta: -118.1 MB). Peak memory consumption was 3.5 MB. Max. memory is 11.5 GB. [2019-10-22 09:02:19,203 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 09:02:19,204 INFO L168 Benchmark]: CACSL2BoogieTranslator took 248.16 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 121.6 MB). Free memory was 944.5 MB in the beginning and 1.1 GB in the end (delta: -171.8 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. [2019-10-22 09:02:19,205 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.95 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. [2019-10-22 09:02:19,205 INFO L168 Benchmark]: Boogie Preprocessor took 16.91 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. [2019-10-22 09:02:19,206 INFO L168 Benchmark]: RCFGBuilder took 315.71 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.8 MB). Peak memory consumption was 19.8 MB. Max. memory is 11.5 GB. [2019-10-22 09:02:19,206 INFO L168 Benchmark]: TraceAbstraction took 403.99 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: 33.9 MB). Peak memory consumption was 33.9 MB. Max. memory is 11.5 GB. [2019-10-22 09:02:19,206 INFO L168 Benchmark]: Witness Printer took 44.37 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. [2019-10-22 09:02:19,209 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 248.16 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 121.6 MB). Free memory was 944.5 MB in the beginning and 1.1 GB in the end (delta: -171.8 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 30.95 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. * Boogie Preprocessor took 16.91 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. * RCFGBuilder took 315.71 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.8 MB). Peak memory consumption was 19.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 403.99 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: 33.9 MB). Peak memory consumption was 33.9 MB. Max. memory is 11.5 GB. * Witness Printer took 44.37 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: [L12] int input = __VERIFIER_nondet_int(); [L13] CALL id(input) VAL [\old(x)=-2147483648] [L5] COND FALSE !(x==0) VAL [\old(x)=-2147483648, x=-2147483648] [L6] x-1 VAL [\old(x)=-2147483648, x=-2147483648] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 23 locations, 4 error locations. Result: UNSAFE, OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 16 SDtfs, 31 SDslu, 22 SDs, 0 SdLazy, 19 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=23occurred 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, 0.0s 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...