./Ultimate.py --spec ../../sv-benchmarks/c/NoOverflows.prp --file ../../sv-benchmarks/c/signedintegeroverflow-regression/PrefixDecrement_false-no-overflow.c.i --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_2a007d6a-0e3e-47d5-af86-a5e9a6183d33/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_2a007d6a-0e3e-47d5-af86-a5e9a6183d33/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_2a007d6a-0e3e-47d5-af86-a5e9a6183d33/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_2a007d6a-0e3e-47d5-af86-a5e9a6183d33/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/signedintegeroverflow-regression/PrefixDecrement_false-no-overflow.c.i -s /tmp/vcloud-vcloud-master/worker/working_dir_2a007d6a-0e3e-47d5-af86-a5e9a6183d33/bin-2019/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_2a007d6a-0e3e-47d5-af86-a5e9a6183d33/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 058f2b919df241022a2d1e4bdbdaa26cd8e08c13 ..................................................................................................................................................................................................................................................................................................... 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 05:51:11,153 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 05:51:11,155 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 05:51:11,166 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 05:51:11,166 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 05:51:11,167 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 05:51:11,168 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 05:51:11,169 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 05:51:11,170 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 05:51:11,171 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 05:51:11,172 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 05:51:11,172 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 05:51:11,173 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 05:51:11,173 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 05:51:11,174 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 05:51:11,175 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 05:51:11,176 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 05:51:11,177 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 05:51:11,178 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 05:51:11,180 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 05:51:11,181 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 05:51:11,182 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 05:51:11,184 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 05:51:11,184 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 05:51:11,184 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 05:51:11,185 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 05:51:11,186 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 05:51:11,186 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 05:51:11,187 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 05:51:11,188 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 05:51:11,189 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 05:51:11,189 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 05:51:11,189 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 05:51:11,189 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 05:51:11,190 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 05:51:11,191 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 05:51:11,192 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_2a007d6a-0e3e-47d5-af86-a5e9a6183d33/bin-2019/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf [2018-10-27 05:51:11,202 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 05:51:11,202 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 05:51:11,203 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 05:51:11,204 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 05:51:11,204 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 05:51:11,204 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 05:51:11,204 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 05:51:11,204 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 05:51:11,204 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 05:51:11,204 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 05:51:11,205 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 05:51:11,205 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 05:51:11,205 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-10-27 05:51:11,205 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 05:51:11,205 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 05:51:11,206 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 05:51:11,206 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 05:51:11,206 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 05:51:11,206 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2018-10-27 05:51:11,206 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 05:51:11,206 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 05:51:11,206 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 05:51:11,207 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 05:51:11,209 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 05:51:11,209 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 05:51:11,209 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 05:51:11,209 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 05:51:11,209 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 05:51:11,209 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 05:51:11,210 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 05:51:11,210 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 05:51:11,210 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 05:51:11,210 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 05:51:11,210 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_2a007d6a-0e3e-47d5-af86-a5e9a6183d33/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 -> 058f2b919df241022a2d1e4bdbdaa26cd8e08c13 [2018-10-27 05:51:11,236 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 05:51:11,246 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 05:51:11,249 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 05:51:11,250 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 05:51:11,250 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 05:51:11,251 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_2a007d6a-0e3e-47d5-af86-a5e9a6183d33/bin-2019/utaipan/../../sv-benchmarks/c/signedintegeroverflow-regression/PrefixDecrement_false-no-overflow.c.i [2018-10-27 05:51:11,297 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_2a007d6a-0e3e-47d5-af86-a5e9a6183d33/bin-2019/utaipan/data/8c78cf6c0/75f18f328dd147a9a8955dff8bafa359/FLAG15e8a8851 [2018-10-27 05:51:11,700 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 05:51:11,701 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_2a007d6a-0e3e-47d5-af86-a5e9a6183d33/sv-benchmarks/c/signedintegeroverflow-regression/PrefixDecrement_false-no-overflow.c.i [2018-10-27 05:51:11,711 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_2a007d6a-0e3e-47d5-af86-a5e9a6183d33/bin-2019/utaipan/data/8c78cf6c0/75f18f328dd147a9a8955dff8bafa359/FLAG15e8a8851 [2018-10-27 05:51:11,722 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_2a007d6a-0e3e-47d5-af86-a5e9a6183d33/bin-2019/utaipan/data/8c78cf6c0/75f18f328dd147a9a8955dff8bafa359 [2018-10-27 05:51:11,725 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 05:51:11,726 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-10-27 05:51:11,726 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 05:51:11,726 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 05:51:11,729 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 05:51:11,730 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:51:11" (1/1) ... [2018-10-27 05:51:11,732 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@447a481c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:51:11, skipping insertion in model container [2018-10-27 05:51:11,733 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:51:11" (1/1) ... [2018-10-27 05:51:11,741 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 05:51:11,768 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 05:51:11,971 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 05:51:11,978 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 05:51:12,025 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 05:51:12,071 INFO L193 MainTranslator]: Completed translation [2018-10-27 05:51:12,071 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:51:12 WrapperNode [2018-10-27 05:51:12,072 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 05:51:12,073 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 05:51:12,073 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 05:51:12,073 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 05:51:12,081 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:51:12" (1/1) ... [2018-10-27 05:51:12,091 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:51:12" (1/1) ... [2018-10-27 05:51:12,160 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 05:51:12,160 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 05:51:12,160 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 05:51:12,160 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 05:51:12,167 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:51:12" (1/1) ... [2018-10-27 05:51:12,167 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:51:12" (1/1) ... [2018-10-27 05:51:12,168 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:51:12" (1/1) ... [2018-10-27 05:51:12,169 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:51:12" (1/1) ... [2018-10-27 05:51:12,171 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:51:12" (1/1) ... [2018-10-27 05:51:12,172 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:51:12" (1/1) ... [2018-10-27 05:51:12,173 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:51:12" (1/1) ... [2018-10-27 05:51:12,174 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 05:51:12,174 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 05:51:12,175 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 05:51:12,175 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 05:51:12,176 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:51:12" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2a007d6a-0e3e-47d5-af86-a5e9a6183d33/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 05:51:12,231 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 05:51:12,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 05:51:12,231 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 05:51:12,231 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 05:51:12,232 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 05:51:12,232 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 05:51:12,620 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 05:51:12,621 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:51:12 BoogieIcfgContainer [2018-10-27 05:51:12,621 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 05:51:12,622 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 05:51:12,622 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 05:51:12,626 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 05:51:12,626 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 05:51:11" (1/3) ... [2018-10-27 05:51:12,627 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e50c9ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:51:12, skipping insertion in model container [2018-10-27 05:51:12,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:51:12" (2/3) ... [2018-10-27 05:51:12,628 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e50c9ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:51:12, skipping insertion in model container [2018-10-27 05:51:12,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:51:12" (3/3) ... [2018-10-27 05:51:12,630 INFO L112 eAbstractionObserver]: Analyzing ICFG PrefixDecrement_false-no-overflow.c.i [2018-10-27 05:51:12,640 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 05:51:12,647 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2018-10-27 05:51:12,664 INFO L257 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2018-10-27 05:51:12,706 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 05:51:12,707 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 05:51:12,707 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 05:51:12,707 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 05:51:12,707 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 05:51:12,707 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 05:51:12,707 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 05:51:12,708 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 05:51:12,729 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2018-10-27 05:51:12,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-10-27 05:51:12,736 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:51:12,737 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-10-27 05:51:12,739 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-10-27 05:51:12,753 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:51:12,756 INFO L82 PathProgramCache]: Analyzing trace with hash -1378257395, now seen corresponding path program 1 times [2018-10-27 05:51:12,758 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:51:12,806 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:51:12,806 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:51:12,806 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:51:12,807 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:51:12,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:51:12,942 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 05:51:12,943 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 05:51:12,944 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-27 05:51:12,944 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 05:51:12,948 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 05:51:12,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 05:51:12,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 05:51:12,965 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 3 states. [2018-10-27 05:51:12,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:51:12,995 INFO L93 Difference]: Finished difference Result 14 states and 13 transitions. [2018-10-27 05:51:12,996 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 05:51:12,997 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2018-10-27 05:51:12,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:51:13,004 INFO L225 Difference]: With dead ends: 14 [2018-10-27 05:51:13,004 INFO L226 Difference]: Without dead ends: 9 [2018-10-27 05:51:13,007 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 05:51:13,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2018-10-27 05:51:13,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-10-27 05:51:13,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-10-27 05:51:13,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 8 transitions. [2018-10-27 05:51:13,036 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 8 transitions. Word has length 7 [2018-10-27 05:51:13,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:51:13,036 INFO L481 AbstractCegarLoop]: Abstraction has 9 states and 8 transitions. [2018-10-27 05:51:13,036 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 05:51:13,036 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2018-10-27 05:51:13,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-10-27 05:51:13,037 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:51:13,037 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 05:51:13,037 INFO L424 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-10-27 05:51:13,038 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:51:13,038 INFO L82 PathProgramCache]: Analyzing trace with hash 223693754, now seen corresponding path program 1 times [2018-10-27 05:51:13,038 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:51:13,039 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:51:13,040 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:51:13,040 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:51:13,040 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:51:13,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 05:51:13,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 05:51:13,077 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-10-27 05:51:13,089 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-27 05:51:13,090 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-27 05:51:13,090 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-27 05:51:13,090 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-27 05:51:13,101 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 05:51:13 BoogieIcfgContainer [2018-10-27 05:51:13,102 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 05:51:13,102 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-27 05:51:13,102 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-27 05:51:13,102 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-27 05:51:13,103 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:51:12" (3/4) ... [2018-10-27 05:51:13,105 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-10-27 05:51:13,105 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-27 05:51:13,106 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-27 05:51:13,106 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-27 05:51:13,106 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-27 05:51:13,136 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_2a007d6a-0e3e-47d5-af86-a5e9a6183d33/bin-2019/utaipan/witness.graphml [2018-10-27 05:51:13,137 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-27 05:51:13,137 INFO L168 Benchmark]: Toolchain (without parser) took 1412.32 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 164.6 MB). Free memory was 962.5 MB in the beginning and 1.1 GB in the end (delta: -152.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 11.5 GB. [2018-10-27 05:51:13,139 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 982.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 05:51:13,139 INFO L168 Benchmark]: CACSL2BoogieTranslator took 345.65 ms. Allocated memory is still 1.0 GB. Free memory was 962.5 MB in the beginning and 941.0 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 11.5 GB. [2018-10-27 05:51:13,140 INFO L168 Benchmark]: Boogie Procedure Inliner took 86.93 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 164.6 MB). Free memory was 941.0 MB in the beginning and 1.2 GB in the end (delta: -217.8 MB). Peak memory consumption was 15.4 MB. Max. memory is 11.5 GB. [2018-10-27 05:51:13,140 INFO L168 Benchmark]: Boogie Preprocessor took 14.03 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 05:51:13,140 INFO L168 Benchmark]: RCFGBuilder took 446.59 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: 17.2 MB). Peak memory consumption was 17.2 MB. Max. memory is 11.5 GB. [2018-10-27 05:51:13,141 INFO L168 Benchmark]: TraceAbstraction took 480.00 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: 27.0 MB). Peak memory consumption was 27.0 MB. Max. memory is 11.5 GB. [2018-10-27 05:51:13,142 INFO L168 Benchmark]: Witness Printer took 34.88 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. [2018-10-27 05:51:13,144 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 982.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 345.65 ms. Allocated memory is still 1.0 GB. Free memory was 962.5 MB in the beginning and 941.0 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 86.93 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 164.6 MB). Free memory was 941.0 MB in the beginning and 1.2 GB in the end (delta: -217.8 MB). Peak memory consumption was 15.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 14.03 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 446.59 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: 17.2 MB). Peak memory consumption was 17.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 480.00 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: 27.0 MB). Peak memory consumption was 27.0 MB. Max. memory is 11.5 GB. * Witness Printer took 34.88 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.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 333]: integer overflow possible integer overflow possible We found a FailurePath: [L334] CALL "%d\n" [L334] RET "%d\n" VAL ["%d\n"={104:0}, \old("%d\n")=102, \old("%d\n")=103] [L332] int x = -2147483647 - 1; VAL ["%d\n"={104:0}, x=-2147483648] [L333] --x VAL ["%d\n"={104:0}, x=-2147483648] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 14 locations, 2 error locations. UNSAFE Result, 0.4s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 6 SDtfs, 2 SDslu, 5 SDs, 0 SdLazy, 2 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 60 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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...