./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 cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_55ca2172-1b76-41f4-a192-d0ff98a65453/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_55ca2172-1b76-41f4-a192-d0ff98a65453/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_55ca2172-1b76-41f4-a192-d0ff98a65453/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_55ca2172-1b76-41f4-a192-d0ff98a65453/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex3.c -s /tmp/vcloud-vcloud-master/worker/working_dir_55ca2172-1b76-41f4-a192-d0ff98a65453/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_55ca2172-1b76-41f4-a192-d0ff98a65453/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 0.1.24-cad4683 [2019-10-22 11:22:46,059 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 11:22:46,061 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 11:22:46,070 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 11:22:46,070 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 11:22:46,071 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 11:22:46,072 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 11:22:46,073 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 11:22:46,074 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 11:22:46,075 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 11:22:46,076 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 11:22:46,077 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 11:22:46,077 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 11:22:46,078 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 11:22:46,078 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 11:22:46,079 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 11:22:46,080 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 11:22:46,081 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 11:22:46,082 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 11:22:46,084 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 11:22:46,086 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 11:22:46,089 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 11:22:46,090 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 11:22:46,091 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 11:22:46,093 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 11:22:46,093 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 11:22:46,093 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 11:22:46,094 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 11:22:46,094 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 11:22:46,095 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 11:22:46,096 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 11:22:46,096 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 11:22:46,097 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 11:22:46,097 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 11:22:46,098 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 11:22:46,099 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 11:22:46,099 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 11:22:46,100 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 11:22:46,100 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 11:22:46,101 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 11:22:46,101 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 11:22:46,102 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_55ca2172-1b76-41f4-a192-d0ff98a65453/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf [2019-10-22 11:22:46,113 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 11:22:46,113 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 11:22:46,114 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 11:22:46,114 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-22 11:22:46,114 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-22 11:22:46,114 INFO L138 SettingsManager]: * Explicit value domain=true [2019-10-22 11:22:46,114 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-10-22 11:22:46,114 INFO L138 SettingsManager]: * Octagon Domain=false [2019-10-22 11:22:46,114 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-10-22 11:22:46,114 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-10-22 11:22:46,115 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-10-22 11:22:46,115 INFO L138 SettingsManager]: * Interval Domain=false [2019-10-22 11:22:46,115 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 11:22:46,116 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-10-22 11:22:46,116 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 11:22:46,116 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 11:22:46,116 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 11:22:46,116 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 11:22:46,116 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 11:22:46,116 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-10-22 11:22:46,117 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 11:22:46,117 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 11:22:46,117 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 11:22:46,117 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 11:22:46,117 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 11:22:46,117 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 11:22:46,117 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:22:46,117 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 11:22:46,118 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 11:22:46,118 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 11:22:46,118 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-22 11:22:46,118 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 11:22:46,118 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 11:22:46,118 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 11:22:46,118 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_55ca2172-1b76-41f4-a192-d0ff98a65453/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 [2019-10-22 11:22:46,140 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 11:22:46,151 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 11:22:46,156 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 11:22:46,157 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 11:22:46,157 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 11:22:46,158 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_55ca2172-1b76-41f4-a192-d0ff98a65453/bin/utaipan/../../sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex3.c [2019-10-22 11:22:46,204 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_55ca2172-1b76-41f4-a192-d0ff98a65453/bin/utaipan/data/b72fcff81/f11388c2cdb2428aa504a84bd4604325/FLAG5aff39d9c [2019-10-22 11:22:46,608 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 11:22:46,609 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_55ca2172-1b76-41f4-a192-d0ff98a65453/sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex3.c [2019-10-22 11:22:46,614 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_55ca2172-1b76-41f4-a192-d0ff98a65453/bin/utaipan/data/b72fcff81/f11388c2cdb2428aa504a84bd4604325/FLAG5aff39d9c [2019-10-22 11:22:46,993 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_55ca2172-1b76-41f4-a192-d0ff98a65453/bin/utaipan/data/b72fcff81/f11388c2cdb2428aa504a84bd4604325 [2019-10-22 11:22:46,995 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 11:22:46,996 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 11:22:46,997 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 11:22:46,998 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 11:22:47,001 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 11:22:47,002 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:22:46" (1/1) ... [2019-10-22 11:22:47,004 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2efe514 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:47, skipping insertion in model container [2019-10-22 11:22:47,004 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:22:46" (1/1) ... [2019-10-22 11:22:47,010 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 11:22:47,022 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 11:22:47,139 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:22:47,143 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 11:22:47,213 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:22:47,226 INFO L192 MainTranslator]: Completed translation [2019-10-22 11:22:47,226 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:47 WrapperNode [2019-10-22 11:22:47,226 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 11:22:47,227 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 11:22:47,227 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 11:22:47,227 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 11:22:47,236 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:47" (1/1) ... [2019-10-22 11:22:47,240 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:47" (1/1) ... [2019-10-22 11:22:47,254 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 11:22:47,255 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 11:22:47,255 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 11:22:47,255 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 11:22:47,260 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:47" (1/1) ... [2019-10-22 11:22:47,261 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:47" (1/1) ... [2019-10-22 11:22:47,261 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:47" (1/1) ... [2019-10-22 11:22:47,261 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:47" (1/1) ... [2019-10-22 11:22:47,263 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:47" (1/1) ... [2019-10-22 11:22:47,265 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:47" (1/1) ... [2019-10-22 11:22:47,266 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:47" (1/1) ... [2019-10-22 11:22:47,267 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 11:22:47,267 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 11:22:47,267 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 11:22:47,268 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 11:22:47,268 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:47" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_55ca2172-1b76-41f4-a192-d0ff98a65453/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 [2019-10-22 11:22:47,330 INFO L130 BoogieDeclarations]: Found specification of procedure a [2019-10-22 11:22:47,331 INFO L138 BoogieDeclarations]: Found implementation of procedure a [2019-10-22 11:22:47,331 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 11:22:47,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 11:22:47,505 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 11:22:47,505 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-22 11:22:47,506 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:22:47 BoogieIcfgContainer [2019-10-22 11:22:47,506 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 11:22:47,507 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 11:22:47,507 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 11:22:47,510 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 11:22:47,510 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 11:22:46" (1/3) ... [2019-10-22 11:22:47,511 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@258bec6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:22:47, skipping insertion in model container [2019-10-22 11:22:47,511 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:47" (2/3) ... [2019-10-22 11:22:47,511 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@258bec6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:22:47, skipping insertion in model container [2019-10-22 11:22:47,511 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:22:47" (3/3) ... [2019-10-22 11:22:47,513 INFO L109 eAbstractionObserver]: Analyzing ICFG LeeJonesBen-Amram-POPL2001-Ex3.c [2019-10-22 11:22:47,529 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 11:22:47,548 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 8 error locations. [2019-10-22 11:22:47,564 INFO L249 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2019-10-22 11:22:47,592 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 11:22:47,592 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 11:22:47,592 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 11:22:47,592 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 11:22:47,592 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 11:22:47,592 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 11:22:47,592 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 11:22:47,593 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 11:22:47,626 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2019-10-22 11:22:47,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-10-22 11:22:47,630 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:22:47,631 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-10-22 11:22:47,632 INFO L410 AbstractCegarLoop]: === Iteration 1 === [aErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, aErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, aErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, aErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, aErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, aErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, aErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, aErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 11:22:47,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:22:47,641 INFO L82 PathProgramCache]: Analyzing trace with hash 1867061649, now seen corresponding path program 1 times [2019-10-22 11:22:47,648 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:22:47,648 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585992180] [2019-10-22 11:22:47,649 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:22:47,649 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:22:47,649 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:22:47,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 11:22:47,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 11:22:47,743 INFO L168 tionRefinementEngine]: Strategy TAIPAN found a feasible trace [2019-10-22 11:22:47,744 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-10-22 11:22:47,761 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 11:22:47 BoogieIcfgContainer [2019-10-22 11:22:47,762 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 11:22:47,762 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 11:22:47,762 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 11:22:47,762 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 11:22:47,763 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:22:47" (3/4) ... [2019-10-22 11:22:47,764 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-10-22 11:22:47,794 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_55ca2172-1b76-41f4-a192-d0ff98a65453/bin/utaipan/witness.graphml [2019-10-22 11:22:47,794 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 11:22:47,796 INFO L168 Benchmark]: Toolchain (without parser) took 798.94 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 121.6 MB). Free memory was 941.0 MB in the beginning and 1.1 GB in the end (delta: -134.2 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:22:47,796 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 958.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:22:47,797 INFO L168 Benchmark]: CACSL2BoogieTranslator took 229.13 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 121.6 MB). Free memory was 941.0 MB in the beginning and 1.1 GB in the end (delta: -173.3 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. [2019-10-22 11:22:47,797 INFO L168 Benchmark]: Boogie Procedure Inliner took 27.45 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 11:22:47,798 INFO L168 Benchmark]: Boogie Preprocessor took 12.29 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 11:22:47,798 INFO L168 Benchmark]: RCFGBuilder took 238.89 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: 25.3 MB). Peak memory consumption was 25.3 MB. Max. memory is 11.5 GB. [2019-10-22 11:22:47,798 INFO L168 Benchmark]: TraceAbstraction took 254.81 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 11.5 GB. [2019-10-22 11:22:47,799 INFO L168 Benchmark]: Witness Printer took 32.14 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 11:22:47,801 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 958.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 229.13 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 121.6 MB). Free memory was 941.0 MB in the beginning and 1.1 GB in the end (delta: -173.3 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 27.45 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 12.29 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 238.89 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: 25.3 MB). Peak memory consumption was 25.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 254.81 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 11.5 GB. * Witness Printer took 32.14 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: 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, 35 locations, 8 error locations. Result: UNSAFE, OverallTime: 0.1s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred 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, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...