./Ultimate.py --spec ../../sv-benchmarks/c/NoOverflows.prp --file ../../sv-benchmarks/c/termination-crafted-lit/Ben-Amram-LMCS2010-Ex2.3_false-no-overflow.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_d2273caa-1f37-472b-9b6c-7d51fdf87579/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_d2273caa-1f37-472b-9b6c-7d51fdf87579/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_d2273caa-1f37-472b-9b6c-7d51fdf87579/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_d2273caa-1f37-472b-9b6c-7d51fdf87579/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/Ben-Amram-LMCS2010-Ex2.3_false-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_d2273caa-1f37-472b-9b6c-7d51fdf87579/bin-2019/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_d2273caa-1f37-472b-9b6c-7d51fdf87579/bin-2019/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 914e210bb2ee753bbbdbfa23a6e9397216225fad ............................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW) --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-10-27 05:43:26,326 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 05:43:26,328 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 05:43:26,338 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 05:43:26,339 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 05:43:26,339 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 05:43:26,340 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 05:43:26,341 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 05:43:26,342 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 05:43:26,343 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 05:43:26,344 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 05:43:26,344 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 05:43:26,348 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 05:43:26,350 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 05:43:26,356 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 05:43:26,357 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 05:43:26,358 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 05:43:26,359 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 05:43:26,360 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 05:43:26,361 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 05:43:26,362 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 05:43:26,362 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 05:43:26,364 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 05:43:26,365 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 05:43:26,365 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 05:43:26,365 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 05:43:26,366 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 05:43:26,367 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 05:43:26,367 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 05:43:26,369 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 05:43:26,369 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 05:43:26,370 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 05:43:26,370 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 05:43:26,370 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 05:43:26,370 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 05:43:26,371 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 05:43:26,371 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_d2273caa-1f37-472b-9b6c-7d51fdf87579/bin-2019/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf [2018-10-27 05:43:26,385 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 05:43:26,385 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 05:43:26,386 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 05:43:26,386 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 05:43:26,386 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 05:43:26,386 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 05:43:26,386 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 05:43:26,386 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 05:43:26,386 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 05:43:26,387 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 05:43:26,387 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 05:43:26,387 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 05:43:26,387 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-10-27 05:43:26,388 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 05:43:26,388 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 05:43:26,388 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 05:43:26,388 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 05:43:26,388 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 05:43:26,388 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2018-10-27 05:43:26,388 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 05:43:26,388 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 05:43:26,389 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 05:43:26,389 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 05:43:26,389 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 05:43:26,389 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 05:43:26,389 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 05:43:26,389 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 05:43:26,389 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 05:43:26,389 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 05:43:26,390 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 05:43:26,390 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 05:43:26,390 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 05:43:26,390 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 05:43:26,390 INFO L133 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_d2273caa-1f37-472b-9b6c-7d51fdf87579/bin-2019/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 -> 914e210bb2ee753bbbdbfa23a6e9397216225fad [2018-10-27 05:43:26,428 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 05:43:26,440 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 05:43:26,444 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 05:43:26,445 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 05:43:26,446 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 05:43:26,446 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_d2273caa-1f37-472b-9b6c-7d51fdf87579/bin-2019/utaipan/../../sv-benchmarks/c/termination-crafted-lit/Ben-Amram-LMCS2010-Ex2.3_false-no-overflow.c [2018-10-27 05:43:26,503 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_d2273caa-1f37-472b-9b6c-7d51fdf87579/bin-2019/utaipan/data/5a01a97de/5fe3ec6d87b848d8be4c1a7309405a5e/FLAGc9e6b8137 [2018-10-27 05:43:26,875 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 05:43:26,875 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_d2273caa-1f37-472b-9b6c-7d51fdf87579/sv-benchmarks/c/termination-crafted-lit/Ben-Amram-LMCS2010-Ex2.3_false-no-overflow.c [2018-10-27 05:43:26,881 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_d2273caa-1f37-472b-9b6c-7d51fdf87579/bin-2019/utaipan/data/5a01a97de/5fe3ec6d87b848d8be4c1a7309405a5e/FLAGc9e6b8137 [2018-10-27 05:43:26,893 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_d2273caa-1f37-472b-9b6c-7d51fdf87579/bin-2019/utaipan/data/5a01a97de/5fe3ec6d87b848d8be4c1a7309405a5e [2018-10-27 05:43:26,896 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 05:43:26,897 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-10-27 05:43:26,898 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 05:43:26,898 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 05:43:26,902 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 05:43:26,903 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:43:26" (1/1) ... [2018-10-27 05:43:26,905 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14f645f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:43:26, skipping insertion in model container [2018-10-27 05:43:26,905 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:43:26" (1/1) ... [2018-10-27 05:43:26,914 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 05:43:26,927 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 05:43:27,033 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 05:43:27,035 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 05:43:27,046 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 05:43:27,055 INFO L193 MainTranslator]: Completed translation [2018-10-27 05:43:27,055 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:43:27 WrapperNode [2018-10-27 05:43:27,055 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 05:43:27,056 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 05:43:27,056 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 05:43:27,056 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 05:43:27,064 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:43:27" (1/1) ... [2018-10-27 05:43:27,068 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:43:27" (1/1) ... [2018-10-27 05:43:27,073 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 05:43:27,074 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 05:43:27,074 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 05:43:27,074 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 05:43:27,082 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:43:27" (1/1) ... [2018-10-27 05:43:27,082 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:43:27" (1/1) ... [2018-10-27 05:43:27,082 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:43:27" (1/1) ... [2018-10-27 05:43:27,083 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:43:27" (1/1) ... [2018-10-27 05:43:27,086 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:43:27" (1/1) ... [2018-10-27 05:43:27,090 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:43:27" (1/1) ... [2018-10-27 05:43:27,090 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:43:27" (1/1) ... [2018-10-27 05:43:27,092 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 05:43:27,092 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 05:43:27,092 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 05:43:27,092 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 05:43:27,093 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:43:27" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d2273caa-1f37-472b-9b6c-7d51fdf87579/bin-2019/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 [2018-10-27 05:43:27,226 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 05:43:27,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 05:43:27,227 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 05:43:27,228 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 05:43:27,228 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 05:43:27,228 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 05:43:27,466 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 05:43:27,466 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:43:27 BoogieIcfgContainer [2018-10-27 05:43:27,467 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 05:43:27,467 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 05:43:27,467 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 05:43:27,476 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 05:43:27,476 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 05:43:26" (1/3) ... [2018-10-27 05:43:27,477 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e7aefbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:43:27, skipping insertion in model container [2018-10-27 05:43:27,477 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:43:27" (2/3) ... [2018-10-27 05:43:27,478 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e7aefbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:43:27, skipping insertion in model container [2018-10-27 05:43:27,478 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:43:27" (3/3) ... [2018-10-27 05:43:27,479 INFO L112 eAbstractionObserver]: Analyzing ICFG Ben-Amram-LMCS2010-Ex2.3_false-no-overflow.c [2018-10-27 05:43:27,490 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 05:43:27,499 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2018-10-27 05:43:27,515 INFO L257 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2018-10-27 05:43:27,554 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 05:43:27,554 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 05:43:27,555 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 05:43:27,555 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 05:43:27,555 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 05:43:27,555 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 05:43:27,555 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 05:43:27,555 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 05:43:27,571 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2018-10-27 05:43:27,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-10-27 05:43:27,581 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:43:27,582 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 05:43:27,584 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-10-27 05:43:27,595 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:43:27,595 INFO L82 PathProgramCache]: Analyzing trace with hash 1241711279, now seen corresponding path program 1 times [2018-10-27 05:43:27,598 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:43:27,644 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:43:27,644 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:43:27,644 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:43:27,644 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:43:27,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:43:27,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 05:43:27,773 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 05:43:27,773 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-27 05:43:27,773 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 05:43:27,777 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 05:43:27,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 05:43:27,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 05:43:27,791 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 3 states. [2018-10-27 05:43:27,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:43:27,936 INFO L93 Difference]: Finished difference Result 30 states and 31 transitions. [2018-10-27 05:43:27,938 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 05:43:27,939 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2018-10-27 05:43:27,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:43:27,946 INFO L225 Difference]: With dead ends: 30 [2018-10-27 05:43:27,947 INFO L226 Difference]: Without dead ends: 18 [2018-10-27 05:43:27,949 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 05:43:27,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-10-27 05:43:27,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-10-27 05:43:27,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-10-27 05:43:27,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2018-10-27 05:43:27,979 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 9 [2018-10-27 05:43:27,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:43:27,979 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2018-10-27 05:43:27,979 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 05:43:27,980 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2018-10-27 05:43:27,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-10-27 05:43:27,980 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:43:27,980 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 05:43:27,980 INFO L424 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-10-27 05:43:27,981 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:43:27,981 INFO L82 PathProgramCache]: Analyzing trace with hash 1241711471, now seen corresponding path program 1 times [2018-10-27 05:43:27,981 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:43:27,982 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:43:27,982 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:43:27,982 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:43:27,983 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:43:27,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:43:28,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 05:43:28,025 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 05:43:28,025 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-27 05:43:28,025 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 05:43:28,026 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 05:43:28,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 05:43:28,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 05:43:28,026 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 3 states. [2018-10-27 05:43:28,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:43:28,089 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2018-10-27 05:43:28,090 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 05:43:28,090 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2018-10-27 05:43:28,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:43:28,090 INFO L225 Difference]: With dead ends: 30 [2018-10-27 05:43:28,091 INFO L226 Difference]: Without dead ends: 29 [2018-10-27 05:43:28,091 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 05:43:28,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-10-27 05:43:28,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 25. [2018-10-27 05:43:28,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-10-27 05:43:28,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2018-10-27 05:43:28,101 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 9 [2018-10-27 05:43:28,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:43:28,102 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2018-10-27 05:43:28,102 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 05:43:28,102 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2018-10-27 05:43:28,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-10-27 05:43:28,102 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:43:28,102 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 05:43:28,103 INFO L424 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-10-27 05:43:28,103 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:43:28,103 INFO L82 PathProgramCache]: Analyzing trace with hash -161655964, now seen corresponding path program 1 times [2018-10-27 05:43:28,103 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:43:28,104 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:43:28,104 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:43:28,104 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:43:28,104 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:43:28,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 05:43:28,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 05:43:28,131 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-10-27 05:43:28,146 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 05:43:28 BoogieIcfgContainer [2018-10-27 05:43:28,146 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 05:43:28,146 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-27 05:43:28,146 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-27 05:43:28,146 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-27 05:43:28,147 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:43:27" (3/4) ... [2018-10-27 05:43:28,149 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-10-27 05:43:28,179 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_d2273caa-1f37-472b-9b6c-7d51fdf87579/bin-2019/utaipan/witness.graphml [2018-10-27 05:43:28,179 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-27 05:43:28,185 INFO L168 Benchmark]: Toolchain (without parser) took 1283.24 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 176.7 MB). Free memory was 954.4 MB in the beginning and 1.1 GB in the end (delta: -171.8 MB). Peak memory consumption was 4.9 MB. Max. memory is 11.5 GB. [2018-10-27 05:43:28,188 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 979.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 05:43:28,189 INFO L168 Benchmark]: CACSL2BoogieTranslator took 157.45 ms. Allocated memory is still 1.0 GB. Free memory was 954.4 MB in the beginning and 943.6 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 11.5 GB. [2018-10-27 05:43:28,189 INFO L168 Benchmark]: Boogie Procedure Inliner took 17.35 ms. Allocated memory is still 1.0 GB. Free memory is still 943.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 05:43:28,190 INFO L168 Benchmark]: Boogie Preprocessor took 18.12 ms. Allocated memory is still 1.0 GB. Free memory was 943.6 MB in the beginning and 940.9 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-10-27 05:43:28,190 INFO L168 Benchmark]: RCFGBuilder took 374.45 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 176.7 MB). Free memory was 940.9 MB in the beginning and 1.2 GB in the end (delta: -221.8 MB). Peak memory consumption was 21.1 MB. Max. memory is 11.5 GB. [2018-10-27 05:43:28,191 INFO L168 Benchmark]: TraceAbstraction took 678.73 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 33.2 MB). Peak memory consumption was 33.2 MB. Max. memory is 11.5 GB. [2018-10-27 05:43:28,191 INFO L168 Benchmark]: Witness Printer took 33.07 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 11.5 GB. [2018-10-27 05:43:28,194 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 979.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 157.45 ms. Allocated memory is still 1.0 GB. Free memory was 954.4 MB in the beginning and 943.6 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 17.35 ms. Allocated memory is still 1.0 GB. Free memory is still 943.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 18.12 ms. Allocated memory is still 1.0 GB. Free memory was 943.6 MB in the beginning and 940.9 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 374.45 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 176.7 MB). Free memory was 940.9 MB in the beginning and 1.2 GB in the end (delta: -221.8 MB). Peak memory consumption was 21.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 678.73 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 33.2 MB). Peak memory consumption was 33.2 MB. Max. memory is 11.5 GB. * Witness Printer took 33.07 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 24]: integer overflow possible integer overflow possible We found a FailurePath: [L15] int x, y, z; [L16] x = __VERIFIER_nondet_int() [L17] y = __VERIFIER_nondet_int() [L18] z = __VERIFIER_nondet_int() [L20] COND TRUE x > 0 && y > 0 && z > 0 VAL [x=2, y=3, z=1] [L21] COND TRUE y > x [L22] y = z [L23] x = __VERIFIER_nondet_int() [L24] x - 1 VAL [x=-2147483648, y=1, z=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 25 locations, 6 error locations. UNSAFE Result, 0.6s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 28 SDtfs, 23 SDslu, 17 SDs, 0 SdLazy, 21 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 208 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...