./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-ndecr.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_478a0691-ebfd-4572-9669-3721204c19bb/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_478a0691-ebfd-4572-9669-3721204c19bb/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_478a0691-ebfd-4572-9669-3721204c19bb/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_478a0691-ebfd-4572-9669-3721204c19bb/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-ndecr.c -s /tmp/vcloud-vcloud-master/worker/run_dir_478a0691-ebfd-4572-9669-3721204c19bb/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_478a0691-ebfd-4572-9669-3721204c19bb/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 64bit --witnessprinter.graph.data.programhash 30650645c50d34fcfc42e8853470c3e29a63ab6d .................................................................................................................................................................................................................................................................... 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 0.2.0-a4ecdab [2020-11-28 03:20:14,062 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:20:14,064 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:20:14,123 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:20:14,124 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:20:14,130 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:20:14,137 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:20:14,139 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:20:14,142 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:20:14,145 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:20:14,146 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:20:14,150 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:20:14,151 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:20:14,160 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:20:14,162 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:20:14,168 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:20:14,170 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:20:14,177 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:20:14,179 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:20:14,188 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:20:14,195 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:20:14,197 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:20:14,199 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:20:14,201 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:20:14,205 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:20:14,207 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:20:14,208 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:20:14,210 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:20:14,211 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:20:14,213 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:20:14,213 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:20:14,215 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:20:14,217 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:20:14,218 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:20:14,220 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:20:14,220 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:20:14,221 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:20:14,222 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:20:14,222 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:20:14,223 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:20:14,224 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:20:14,229 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_478a0691-ebfd-4572-9669-3721204c19bb/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf [2020-11-28 03:20:14,273 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:20:14,274 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:20:14,275 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:20:14,275 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:20:14,276 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:20:14,276 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:20:14,276 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 03:20:14,277 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:20:14,277 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:20:14,277 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 03:20:14,277 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:20:14,278 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 03:20:14,278 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-11-28 03:20:14,278 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:20:14,278 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:20:14,279 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 03:20:14,279 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:20:14,279 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:20:14,280 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:20:14,280 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:20:14,280 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:20:14,280 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:20:14,281 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:20:14,281 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 03:20:14,281 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:20:14,281 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 03:20:14,282 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 03:20:14,282 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:20:14,282 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_478a0691-ebfd-4572-9669-3721204c19bb/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_478a0691-ebfd-4572-9669-3721204c19bb/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 30650645c50d34fcfc42e8853470c3e29a63ab6d [2020-11-28 03:20:14,538 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:20:14,576 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:20:14,581 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:20:14,583 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:20:14,584 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:20:14,586 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_478a0691-ebfd-4572-9669-3721204c19bb/bin/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-ndecr.c [2020-11-28 03:20:14,659 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_478a0691-ebfd-4572-9669-3721204c19bb/bin/uautomizer/data/455ebbffe/93b07ea4e7ee4dfe9b880dca1cd948ab/FLAG933e29b43 [2020-11-28 03:20:15,244 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:20:15,244 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_478a0691-ebfd-4572-9669-3721204c19bb/sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-ndecr.c [2020-11-28 03:20:15,251 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_478a0691-ebfd-4572-9669-3721204c19bb/bin/uautomizer/data/455ebbffe/93b07ea4e7ee4dfe9b880dca1cd948ab/FLAG933e29b43 [2020-11-28 03:20:15,633 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_478a0691-ebfd-4572-9669-3721204c19bb/bin/uautomizer/data/455ebbffe/93b07ea4e7ee4dfe9b880dca1cd948ab [2020-11-28 03:20:15,635 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:20:15,637 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:20:15,658 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:20:15,659 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:20:15,662 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:20:15,663 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:20:15" (1/1) ... [2020-11-28 03:20:15,666 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d266c46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:15, skipping insertion in model container [2020-11-28 03:20:15,667 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:20:15" (1/1) ... [2020-11-28 03:20:15,675 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:20:15,689 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:20:15,834 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:20:15,858 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:20:15,896 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:20:15,907 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:20:15,908 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:15 WrapperNode [2020-11-28 03:20:15,908 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:20:15,910 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:20:15,910 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:20:15,910 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:20:15,918 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:15" (1/1) ... [2020-11-28 03:20:15,923 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:15" (1/1) ... [2020-11-28 03:20:15,937 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:20:15,938 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:20:15,938 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:20:15,939 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:20:15,946 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:15" (1/1) ... [2020-11-28 03:20:15,946 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:15" (1/1) ... [2020-11-28 03:20:15,947 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:15" (1/1) ... [2020-11-28 03:20:15,947 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:15" (1/1) ... [2020-11-28 03:20:15,949 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:15" (1/1) ... [2020-11-28 03:20:15,953 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:15" (1/1) ... [2020-11-28 03:20:15,953 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:15" (1/1) ... [2020-11-28 03:20:15,955 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:20:15,956 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:20:15,956 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:20:15,956 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:20:15,957 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:15" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_478a0691-ebfd-4572-9669-3721204c19bb/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 [2020-11-28 03:20:16,029 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:20:16,030 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:20:16,241 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:20:16,242 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-11-28 03:20:16,245 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:20:16 BoogieIcfgContainer [2020-11-28 03:20:16,245 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:20:16,248 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:20:16,248 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:20:16,252 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:20:16,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:20:15" (1/3) ... [2020-11-28 03:20:16,256 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fbcb643 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:20:16, skipping insertion in model container [2020-11-28 03:20:16,257 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:15" (2/3) ... [2020-11-28 03:20:16,257 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fbcb643 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:20:16, skipping insertion in model container [2020-11-28 03:20:16,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:20:16" (3/3) ... [2020-11-28 03:20:16,260 INFO L111 eAbstractionObserver]: Analyzing ICFG AliasDarteFeautrierGonnord-SAS2010-ndecr.c [2020-11-28 03:20:16,275 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:20:16,280 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-11-28 03:20:16,291 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-28 03:20:16,317 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:20:16,317 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 03:20:16,317 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:20:16,318 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:20:16,318 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:20:16,318 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:20:16,318 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:20:16,318 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:20:16,331 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2020-11-28 03:20:16,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2020-11-28 03:20:16,335 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:20:16,336 INFO L422 BasicCegarLoop]: trace histogram [1, 1] [2020-11-28 03:20:16,337 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 03:20:16,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:16,343 INFO L82 PathProgramCache]: Analyzing trace with hash 994, now seen corresponding path program 1 times [2020-11-28 03:20:16,353 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:20:16,353 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328534927] [2020-11-28 03:20:16,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:20:16,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:16,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:20:16,482 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328534927] [2020-11-28 03:20:16,483 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:20:16,483 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-28 03:20:16,484 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988696007] [2020-11-28 03:20:16,488 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:20:16,489 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:20:16,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:20:16,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:20:16,505 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 3 states. [2020-11-28 03:20:16,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:20:16,543 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2020-11-28 03:20:16,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:20:16,545 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 2 [2020-11-28 03:20:16,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:20:16,552 INFO L225 Difference]: With dead ends: 18 [2020-11-28 03:20:16,553 INFO L226 Difference]: Without dead ends: 9 [2020-11-28 03:20:16,556 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:20:16,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2020-11-28 03:20:16,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2020-11-28 03:20:16,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-11-28 03:20:16,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2020-11-28 03:20:16,589 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 2 [2020-11-28 03:20:16,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:20:16,590 INFO L481 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2020-11-28 03:20:16,590 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:20:16,590 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2020-11-28 03:20:16,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-11-28 03:20:16,591 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:20:16,591 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-11-28 03:20:16,591 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 03:20:16,592 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 03:20:16,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:16,593 INFO L82 PathProgramCache]: Analyzing trace with hash 30849, now seen corresponding path program 1 times [2020-11-28 03:20:16,593 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:20:16,593 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081972903] [2020-11-28 03:20:16,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:20:16,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:20:16,603 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:20:16,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:20:16,609 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:20:16,624 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:20:16,625 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 03:20:16,626 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 03:20:16,661 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:20:16 BoogieIcfgContainer [2020-11-28 03:20:16,661 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:20:16,662 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:20:16,662 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:20:16,663 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:20:16,663 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:20:16" (3/4) ... [2020-11-28 03:20:16,665 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-28 03:20:16,700 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_478a0691-ebfd-4572-9669-3721204c19bb/bin/uautomizer/witness.graphml [2020-11-28 03:20:16,700 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:20:16,703 INFO L168 Benchmark]: Toolchain (without parser) took 1064.63 ms. Allocated memory was 92.3 MB in the beginning and 123.7 MB in the end (delta: 31.5 MB). Free memory was 65.3 MB in the beginning and 101.7 MB in the end (delta: -36.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:20:16,704 INFO L168 Benchmark]: CDTParser took 0.61 ms. Allocated memory is still 92.3 MB. Free memory was 51.8 MB in the beginning and 51.8 MB in the end (delta: 37.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:20:16,706 INFO L168 Benchmark]: CACSL2BoogieTranslator took 250.19 ms. Allocated memory is still 92.3 MB. Free memory was 65.1 MB in the beginning and 71.8 MB in the end (delta: -6.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 03:20:16,707 INFO L168 Benchmark]: Boogie Procedure Inliner took 27.87 ms. Allocated memory is still 92.3 MB. Free memory was 71.8 MB in the beginning and 70.4 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:20:16,708 INFO L168 Benchmark]: Boogie Preprocessor took 16.82 ms. Allocated memory is still 92.3 MB. Free memory was 70.4 MB in the beginning and 69.6 MB in the end (delta: 798.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:20:16,709 INFO L168 Benchmark]: RCFGBuilder took 289.28 ms. Allocated memory is still 92.3 MB. Free memory was 69.6 MB in the beginning and 61.3 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 03:20:16,710 INFO L168 Benchmark]: TraceAbstraction took 413.16 ms. Allocated memory was 92.3 MB in the beginning and 123.7 MB in the end (delta: 31.5 MB). Free memory was 60.6 MB in the beginning and 103.1 MB in the end (delta: -42.4 MB). Peak memory consumption was 22.2 MB. Max. memory is 16.1 GB. [2020-11-28 03:20:16,711 INFO L168 Benchmark]: Witness Printer took 38.62 ms. Allocated memory is still 123.7 MB. Free memory was 103.1 MB in the beginning and 101.7 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:20:16,718 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.61 ms. Allocated memory is still 92.3 MB. Free memory was 51.8 MB in the beginning and 51.8 MB in the end (delta: 37.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 250.19 ms. Allocated memory is still 92.3 MB. Free memory was 65.1 MB in the beginning and 71.8 MB in the end (delta: -6.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 27.87 ms. Allocated memory is still 92.3 MB. Free memory was 71.8 MB in the beginning and 70.4 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 16.82 ms. Allocated memory is still 92.3 MB. Free memory was 70.4 MB in the beginning and 69.6 MB in the end (delta: 798.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 289.28 ms. Allocated memory is still 92.3 MB. Free memory was 69.6 MB in the beginning and 61.3 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 413.16 ms. Allocated memory was 92.3 MB in the beginning and 123.7 MB in the end (delta: 31.5 MB). Free memory was 60.6 MB in the beginning and 103.1 MB in the end (delta: -42.4 MB). Peak memory consumption was 22.2 MB. Max. memory is 16.1 GB. * Witness Printer took 38.62 ms. Allocated memory is still 123.7 MB. Free memory was 103.1 MB in the beginning and 101.7 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 16]: integer overflow possible integer overflow possible We found a FailurePath: [L14] int i, n; [L15] n = __VERIFIER_nondet_int() [L16] n - 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 10 SDtfs, 12 SDslu, 0 SDs, 0 SdLazy, 3 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred 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, 5 NumberOfCodeBlocks, 5 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 1 ConstructedInterpolants, 0 QuantifiedInterpolants, 3 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, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...