./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex3.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_2041394d-2b24-4208-88b4-e07903f64d53/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_2041394d-2b24-4208-88b4-e07903f64d53/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_2041394d-2b24-4208-88b4-e07903f64d53/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_2041394d-2b24-4208-88b4-e07903f64d53/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex3.c -s /tmp/vcloud-vcloud-master/worker/run_dir_2041394d-2b24-4208-88b4-e07903f64d53/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_2041394d-2b24-4208-88b4-e07903f64d53/bin/utaipan --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 Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 5acc2aa1430881b160e5f11e4b9716f258fd6460 ................................................................................................................................................................................................................................................ 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 07:40:12,149 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:40:12,158 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:40:12,197 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:40:12,198 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:40:12,200 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:40:12,202 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:40:12,204 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:40:12,207 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:40:12,209 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:40:12,210 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:40:12,212 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:40:12,213 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:40:12,214 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:40:12,216 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:40:12,217 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:40:12,219 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:40:12,220 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:40:12,223 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:40:12,225 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:40:12,228 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:40:12,229 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:40:12,231 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:40:12,232 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:40:12,236 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:40:12,242 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:40:12,243 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:40:12,244 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:40:12,245 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:40:12,246 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:40:12,248 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:40:12,249 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:40:12,250 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:40:12,252 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:40:12,254 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:40:12,255 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:40:12,256 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:40:12,256 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:40:12,256 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:40:12,258 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:40:12,258 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:40:12,261 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_2041394d-2b24-4208-88b4-e07903f64d53/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf [2020-11-28 07:40:12,302 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:40:12,302 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:40:12,304 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:40:12,304 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:40:12,305 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:40:12,305 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:40:12,305 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:40:12,305 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:40:12,305 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:40:12,306 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:40:12,307 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:40:12,307 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:40:12,307 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:40:12,308 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:40:12,308 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:40:12,309 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:40:12,309 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 07:40:12,310 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:40:12,310 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:40:12,310 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:40:12,310 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:40:12,311 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:40:12,311 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-11-28 07:40:12,311 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:40:12,311 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:40:12,311 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:40:12,312 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:40:12,312 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:40:12,312 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:40:12,312 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:40:12,313 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:40:12,313 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:40:12,313 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:40:12,314 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:40:12,314 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:40:12,314 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:40:12,314 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:40:12,315 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:40:12,315 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_2041394d-2b24-4208-88b4-e07903f64d53/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_2041394d-2b24-4208-88b4-e07903f64d53/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5acc2aa1430881b160e5f11e4b9716f258fd6460 [2020-11-28 07:40:12,586 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:40:12,626 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:40:12,631 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:40:12,632 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:40:12,633 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:40:12,634 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_2041394d-2b24-4208-88b4-e07903f64d53/bin/utaipan/../../sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex3.c [2020-11-28 07:40:12,722 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2041394d-2b24-4208-88b4-e07903f64d53/bin/utaipan/data/1699e0bfa/6818cf31301b4c2b83c1aa380b7080c6/FLAGc662762c4 [2020-11-28 07:40:13,100 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:40:13,100 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_2041394d-2b24-4208-88b4-e07903f64d53/sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex3.c [2020-11-28 07:40:13,106 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2041394d-2b24-4208-88b4-e07903f64d53/bin/utaipan/data/1699e0bfa/6818cf31301b4c2b83c1aa380b7080c6/FLAGc662762c4 [2020-11-28 07:40:13,117 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_2041394d-2b24-4208-88b4-e07903f64d53/bin/utaipan/data/1699e0bfa/6818cf31301b4c2b83c1aa380b7080c6 [2020-11-28 07:40:13,119 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:40:13,120 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:40:13,122 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:40:13,122 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:40:13,128 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:40:13,129 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:40:13" (1/1) ... [2020-11-28 07:40:13,130 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@da32b05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:13, skipping insertion in model container [2020-11-28 07:40:13,131 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:40:13" (1/1) ... [2020-11-28 07:40:13,140 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:40:13,156 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:40:13,305 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:40:13,308 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:40:13,322 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:40:13,335 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:40:13,335 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:13 WrapperNode [2020-11-28 07:40:13,335 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:40:13,336 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:40:13,337 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:40:13,337 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:40:13,346 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:13" (1/1) ... [2020-11-28 07:40:13,353 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:13" (1/1) ... [2020-11-28 07:40:13,375 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:40:13,376 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:40:13,376 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:40:13,377 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:40:13,384 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:13" (1/1) ... [2020-11-28 07:40:13,385 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:13" (1/1) ... [2020-11-28 07:40:13,388 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:13" (1/1) ... [2020-11-28 07:40:13,388 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:13" (1/1) ... [2020-11-28 07:40:13,395 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:13" (1/1) ... [2020-11-28 07:40:13,398 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:13" (1/1) ... [2020-11-28 07:40:13,399 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:13" (1/1) ... [2020-11-28 07:40:13,408 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:40:13,410 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:40:13,410 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:40:13,411 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:40:13,412 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:13" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2041394d-2b24-4208-88b4-e07903f64d53/bin/utaipan/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 07:40:13,485 INFO L130 BoogieDeclarations]: Found specification of procedure a [2020-11-28 07:40:13,486 INFO L138 BoogieDeclarations]: Found implementation of procedure a [2020-11-28 07:40:13,486 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:40:13,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:40:13,937 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:40:13,938 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-11-28 07:40:13,940 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:40:13 BoogieIcfgContainer [2020-11-28 07:40:13,940 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:40:13,942 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:40:13,942 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:40:13,950 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:40:13,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:40:13" (1/3) ... [2020-11-28 07:40:13,951 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51ba36f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:40:13, skipping insertion in model container [2020-11-28 07:40:13,952 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:13" (2/3) ... [2020-11-28 07:40:13,952 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51ba36f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:40:13, skipping insertion in model container [2020-11-28 07:40:13,957 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:40:13" (3/3) ... [2020-11-28 07:40:13,958 INFO L111 eAbstractionObserver]: Analyzing ICFG LeeJonesBen-Amram-POPL2001-Ex3.c [2020-11-28 07:40:13,968 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:40:13,972 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 8 error locations. [2020-11-28 07:40:13,984 INFO L253 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2020-11-28 07:40:14,005 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:40:14,006 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:40:14,006 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:40:14,006 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:40:14,006 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:40:14,006 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:40:14,006 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:40:14,007 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:40:14,021 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-11-28 07:40:14,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-28 07:40:14,025 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:40:14,025 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-28 07:40:14,026 INFO L429 AbstractCegarLoop]: === Iteration 1 === [aErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, aErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, aErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, aErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, aErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, aErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, aErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, aErr6ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 07:40:14,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:40:14,031 INFO L82 PathProgramCache]: Analyzing trace with hash 1867061649, now seen corresponding path program 1 times [2020-11-28 07:40:14,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:40:14,041 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023126819] [2020-11-28 07:40:14,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:40:14,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:40:14,114 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:40:14,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:40:14,126 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:40:14,141 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-28 07:40:14,142 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 07:40:14,142 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 07:40:14,161 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:40:14 BoogieIcfgContainer [2020-11-28 07:40:14,161 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:40:14,162 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:40:14,162 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:40:14,162 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:40:14,163 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:40:13" (3/4) ... [2020-11-28 07:40:14,165 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-28 07:40:14,205 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_2041394d-2b24-4208-88b4-e07903f64d53/bin/utaipan/witness.graphml [2020-11-28 07:40:14,205 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:40:14,207 INFO L168 Benchmark]: Toolchain (without parser) took 1085.34 ms. Allocated memory was 75.5 MB in the beginning and 92.3 MB in the end (delta: 16.8 MB). Free memory was 43.0 MB in the beginning and 70.9 MB in the end (delta: -27.9 MB). Peak memory consumption was 21.8 MB. Max. memory is 16.1 GB. [2020-11-28 07:40:14,208 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 75.5 MB. Free memory was 55.2 MB in the beginning and 55.2 MB in the end (delta: 24.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:40:14,209 INFO L168 Benchmark]: CACSL2BoogieTranslator took 213.69 ms. Allocated memory was 75.5 MB in the beginning and 92.3 MB in the end (delta: 16.8 MB). Free memory was 42.9 MB in the beginning and 67.9 MB in the end (delta: -25.1 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-28 07:40:14,210 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.13 ms. Allocated memory is still 92.3 MB. Free memory was 67.9 MB in the beginning and 66.9 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:40:14,211 INFO L168 Benchmark]: Boogie Preprocessor took 32.67 ms. Allocated memory is still 92.3 MB. Free memory was 66.9 MB in the beginning and 65.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:40:14,212 INFO L168 Benchmark]: RCFGBuilder took 530.23 ms. Allocated memory is still 92.3 MB. Free memory was 65.8 MB in the beginning and 54.0 MB in the end (delta: 11.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 07:40:14,213 INFO L168 Benchmark]: TraceAbstraction took 219.32 ms. Allocated memory is still 92.3 MB. Free memory was 53.3 MB in the beginning and 42.4 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 07:40:14,213 INFO L168 Benchmark]: Witness Printer took 43.04 ms. Allocated memory is still 92.3 MB. Free memory was 42.4 MB in the beginning and 70.9 MB in the end (delta: -28.5 MB). Peak memory consumption was 5.6 MB. Max. memory is 16.1 GB. [2020-11-28 07:40:14,219 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 75.5 MB. Free memory was 55.2 MB in the beginning and 55.2 MB in the end (delta: 24.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 213.69 ms. Allocated memory was 75.5 MB in the beginning and 92.3 MB in the end (delta: 16.8 MB). Free memory was 42.9 MB in the beginning and 67.9 MB in the end (delta: -25.1 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 39.13 ms. Allocated memory is still 92.3 MB. Free memory was 67.9 MB in the beginning and 66.9 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 32.67 ms. Allocated memory is still 92.3 MB. Free memory was 66.9 MB in the beginning and 65.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 530.23 ms. Allocated memory is still 92.3 MB. Free memory was 65.8 MB in the beginning and 54.0 MB in the end (delta: 11.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 219.32 ms. Allocated memory is still 92.3 MB. Free memory was 53.3 MB in the beginning and 42.4 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Witness Printer took 43.04 ms. Allocated memory is still 92.3 MB. Free memory was 42.4 MB in the beginning and 70.9 MB in the end (delta: -28.5 MB). Peak memory consumption was 5.6 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 14]: integer overflow possible integer overflow possible We found a FailurePath: [L25] int m = __VERIFIER_nondet_int(); [L26] int n = __VERIFIER_nondet_int(); [L27] COND TRUE m >= 0 && n >= 0 [L28] CALL a(m,n) VAL [\old(m)=0, \old(n)=2147483647] [L13] COND TRUE m <= 0 VAL [\old(m)=0, \old(n)=2147483647, m=0, n=2147483647] [L14] n + 1 VAL [\old(m)=0, \old(n)=2147483647, m=0, n=2147483647] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 33 locations, 8 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.1s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred 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: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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...