./Ultimate.py --spec ../../sv-benchmarks/c/NoOverflows.prp --file ../../sv-benchmarks/c/termination-crafted/Cairo_nondet_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_f1467445-e9e9-479d-a130-15bb39967b15/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_f1467445-e9e9-479d-a130-15bb39967b15/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_f1467445-e9e9-479d-a130-15bb39967b15/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_f1467445-e9e9-479d-a130-15bb39967b15/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted/Cairo_nondet_false-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_f1467445-e9e9-479d-a130-15bb39967b15/bin-2019/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_f1467445-e9e9-479d-a130-15bb39967b15/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 de94f0c7b8482738d507216e71ac3b33c5f9a9e3 .................................................................................................................................................................................................................................................................................................................... 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 [2018-11-10 07:36:00,147 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 07:36:00,148 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 07:36:00,158 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-10 07:36:00,158 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-10 07:36:00,159 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-10 07:36:00,160 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-10 07:36:00,161 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-10 07:36:00,162 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-10 07:36:00,163 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-10 07:36:00,164 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-10 07:36:00,164 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 07:36:00,164 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 07:36:00,165 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 07:36:00,166 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 07:36:00,167 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 07:36:00,167 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 07:36:00,169 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 07:36:00,170 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 07:36:00,171 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 07:36:00,172 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 07:36:00,173 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 07:36:00,175 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 07:36:00,175 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 07:36:00,175 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 07:36:00,176 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 07:36:00,177 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 07:36:00,178 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 07:36:00,178 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 07:36:00,179 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 07:36:00,179 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 07:36:00,180 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 07:36:00,180 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 07:36:00,180 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 07:36:00,181 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 07:36:00,181 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 07:36:00,182 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_f1467445-e9e9-479d-a130-15bb39967b15/bin-2019/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf [2018-11-10 07:36:00,192 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 07:36:00,193 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 07:36:00,193 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-10 07:36:00,194 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-10 07:36:00,194 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-10 07:36:00,194 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-10 07:36:00,194 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-10 07:36:00,194 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-10 07:36:00,194 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-10 07:36:00,195 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-10 07:36:00,195 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-10 07:36:00,195 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 07:36:00,195 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-10 07:36:00,196 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-10 07:36:00,196 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 07:36:00,196 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-10 07:36:00,196 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-10 07:36:00,196 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-10 07:36:00,196 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2018-11-10 07:36:00,197 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-10 07:36:00,197 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-10 07:36:00,197 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 07:36:00,197 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-10 07:36:00,197 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-10 07:36:00,198 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-10 07:36:00,198 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 07:36:00,198 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 07:36:00,198 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-10 07:36:00,198 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-10 07:36:00,198 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-10 07:36:00,198 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-10 07:36:00,199 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-10 07:36:00,199 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-10 07:36:00,199 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_f1467445-e9e9-479d-a130-15bb39967b15/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 -> de94f0c7b8482738d507216e71ac3b33c5f9a9e3 [2018-11-10 07:36:00,224 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 07:36:00,233 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 07:36:00,235 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 07:36:00,236 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 07:36:00,236 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 07:36:00,237 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_f1467445-e9e9-479d-a130-15bb39967b15/bin-2019/utaipan/../../sv-benchmarks/c/termination-crafted/Cairo_nondet_false-no-overflow.c [2018-11-10 07:36:00,277 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_f1467445-e9e9-479d-a130-15bb39967b15/bin-2019/utaipan/data/dcf99d153/cfa61e14b1064a49a43df9d7386d5eb5/FLAGefad62bc0 [2018-11-10 07:36:00,595 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 07:36:00,596 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_f1467445-e9e9-479d-a130-15bb39967b15/sv-benchmarks/c/termination-crafted/Cairo_nondet_false-no-overflow.c [2018-11-10 07:36:00,601 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_f1467445-e9e9-479d-a130-15bb39967b15/bin-2019/utaipan/data/dcf99d153/cfa61e14b1064a49a43df9d7386d5eb5/FLAGefad62bc0 [2018-11-10 07:36:00,610 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_f1467445-e9e9-479d-a130-15bb39967b15/bin-2019/utaipan/data/dcf99d153/cfa61e14b1064a49a43df9d7386d5eb5 [2018-11-10 07:36:00,613 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 07:36:00,614 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-10 07:36:00,615 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 07:36:00,615 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 07:36:00,617 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 07:36:00,618 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 07:36:00" (1/1) ... [2018-11-10 07:36:00,620 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@769b41f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:36:00, skipping insertion in model container [2018-11-10 07:36:00,620 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 07:36:00" (1/1) ... [2018-11-10 07:36:00,626 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 07:36:00,638 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 07:36:00,743 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 07:36:00,745 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 07:36:00,754 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 07:36:00,763 INFO L193 MainTranslator]: Completed translation [2018-11-10 07:36:00,763 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:36:00 WrapperNode [2018-11-10 07:36:00,763 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-10 07:36:00,764 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-10 07:36:00,764 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-10 07:36:00,764 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-10 07:36:00,769 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:36:00" (1/1) ... [2018-11-10 07:36:00,773 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:36:00" (1/1) ... [2018-11-10 07:36:00,777 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-10 07:36:00,777 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-10 07:36:00,777 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-10 07:36:00,777 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-10 07:36:00,783 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:36:00" (1/1) ... [2018-11-10 07:36:00,783 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:36:00" (1/1) ... [2018-11-10 07:36:00,784 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:36:00" (1/1) ... [2018-11-10 07:36:00,784 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:36:00" (1/1) ... [2018-11-10 07:36:00,786 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:36:00" (1/1) ... [2018-11-10 07:36:00,789 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:36:00" (1/1) ... [2018-11-10 07:36:00,789 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:36:00" (1/1) ... [2018-11-10 07:36:00,790 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-10 07:36:00,791 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-10 07:36:00,791 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-10 07:36:00,791 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-10 07:36:00,792 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:36:00" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f1467445-e9e9-479d-a130-15bb39967b15/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 [2018-11-10 07:36:00,895 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-10 07:36:00,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-10 07:36:00,895 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-10 07:36:00,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-10 07:36:00,895 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-10 07:36:00,895 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-10 07:36:01,010 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-10 07:36:01,011 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 07:36:01 BoogieIcfgContainer [2018-11-10 07:36:01,011 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-10 07:36:01,011 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-10 07:36:01,011 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-10 07:36:01,014 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-10 07:36:01,014 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 07:36:00" (1/3) ... [2018-11-10 07:36:01,015 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43676731 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 07:36:01, skipping insertion in model container [2018-11-10 07:36:01,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:36:00" (2/3) ... [2018-11-10 07:36:01,016 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43676731 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 07:36:01, skipping insertion in model container [2018-11-10 07:36:01,016 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 07:36:01" (3/3) ... [2018-11-10 07:36:01,018 INFO L112 eAbstractionObserver]: Analyzing ICFG Cairo_nondet_false-no-overflow.c [2018-11-10 07:36:01,026 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-10 07:36:01,033 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2018-11-10 07:36:01,048 INFO L257 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2018-11-10 07:36:01,077 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-10 07:36:01,077 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-10 07:36:01,077 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-10 07:36:01,078 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-10 07:36:01,078 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-10 07:36:01,078 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-10 07:36:01,078 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-10 07:36:01,078 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-10 07:36:01,094 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2018-11-10 07:36:01,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-11-10 07:36:01,099 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 07:36:01,099 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 07:36:01,101 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 07:36:01,106 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 07:36:01,107 INFO L82 PathProgramCache]: Analyzing trace with hash -217682939, now seen corresponding path program 1 times [2018-11-10 07:36:01,109 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 07:36:01,159 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:36:01,159 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 07:36:01,160 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:36:01,160 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 07:36:01,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 07:36:01,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 07:36:01,233 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 07:36:01,233 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-10 07:36:01,234 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-10 07:36:01,237 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-10 07:36:01,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-10 07:36:01,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-10 07:36:01,249 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 3 states. [2018-11-10 07:36:01,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 07:36:01,282 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2018-11-10 07:36:01,283 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-10 07:36:01,284 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2018-11-10 07:36:01,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 07:36:01,291 INFO L225 Difference]: With dead ends: 22 [2018-11-10 07:36:01,291 INFO L226 Difference]: Without dead ends: 11 [2018-11-10 07:36:01,293 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 [2018-11-10 07:36:01,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2018-11-10 07:36:01,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-11-10 07:36:01,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-11-10 07:36:01,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-11-10 07:36:01,320 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 9 [2018-11-10 07:36:01,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 07:36:01,321 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2018-11-10 07:36:01,321 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-10 07:36:01,321 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2018-11-10 07:36:01,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-10 07:36:01,322 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 07:36:01,322 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 07:36:01,322 INFO L424 AbstractCegarLoop]: === Iteration 2 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 07:36:01,322 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 07:36:01,323 INFO L82 PathProgramCache]: Analyzing trace with hash 1841763534, now seen corresponding path program 1 times [2018-11-10 07:36:01,323 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 07:36:01,324 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:36:01,324 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 07:36:01,324 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:36:01,324 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 07:36:01,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 07:36:01,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 07:36:01,361 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 07:36:01,362 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-10 07:36:01,362 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-10 07:36:01,363 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-10 07:36:01,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-10 07:36:01,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-10 07:36:01,364 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 4 states. [2018-11-10 07:36:01,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 07:36:01,400 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2018-11-10 07:36:01,401 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-10 07:36:01,401 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2018-11-10 07:36:01,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 07:36:01,401 INFO L225 Difference]: With dead ends: 16 [2018-11-10 07:36:01,401 INFO L226 Difference]: Without dead ends: 15 [2018-11-10 07:36:01,402 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-10 07:36:01,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-11-10 07:36:01,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-11-10 07:36:01,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-11-10 07:36:01,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-11-10 07:36:01,405 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 10 [2018-11-10 07:36:01,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 07:36:01,405 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2018-11-10 07:36:01,405 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-10 07:36:01,405 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2018-11-10 07:36:01,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-10 07:36:01,406 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 07:36:01,406 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 07:36:01,406 INFO L424 AbstractCegarLoop]: === Iteration 3 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 07:36:01,406 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 07:36:01,406 INFO L82 PathProgramCache]: Analyzing trace with hash 1468487574, now seen corresponding path program 1 times [2018-11-10 07:36:01,406 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 07:36:01,407 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:36:01,407 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 07:36:01,407 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:36:01,408 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 07:36:01,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 07:36:01,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 07:36:01,432 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-10 07:36:01,446 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 07:36:01 BoogieIcfgContainer [2018-11-10 07:36:01,446 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-10 07:36:01,447 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-10 07:36:01,447 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-10 07:36:01,447 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-10 07:36:01,447 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 07:36:01" (3/4) ... [2018-11-10 07:36:01,449 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-10 07:36:01,479 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_f1467445-e9e9-479d-a130-15bb39967b15/bin-2019/utaipan/witness.graphml [2018-11-10 07:36:01,479 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-10 07:36:01,480 INFO L168 Benchmark]: Toolchain (without parser) took 866.25 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.9 MB). Free memory was 960.3 MB in the beginning and 1.1 GB in the end (delta: -147.3 MB). Peak memory consumption was 1.6 MB. Max. memory is 11.5 GB. [2018-11-10 07:36:01,481 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 07:36:01,481 INFO L168 Benchmark]: CACSL2BoogieTranslator took 148.53 ms. Allocated memory is still 1.0 GB. Free memory was 960.3 MB in the beginning and 949.4 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 11.5 GB. [2018-11-10 07:36:01,482 INFO L168 Benchmark]: Boogie Procedure Inliner took 13.14 ms. Allocated memory is still 1.0 GB. Free memory is still 949.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 07:36:01,482 INFO L168 Benchmark]: Boogie Preprocessor took 13.57 ms. Allocated memory is still 1.0 GB. Free memory is still 949.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 07:36:01,483 INFO L168 Benchmark]: RCFGBuilder took 220.03 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.9 MB). Free memory was 949.4 MB in the beginning and 1.1 GB in the end (delta: -190.0 MB). Peak memory consumption was 22.6 MB. Max. memory is 11.5 GB. [2018-11-10 07:36:01,483 INFO L168 Benchmark]: TraceAbstraction took 435.15 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: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 11.5 GB. [2018-11-10 07:36:01,484 INFO L168 Benchmark]: Witness Printer took 32.46 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. [2018-11-10 07:36:01,486 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 148.53 ms. Allocated memory is still 1.0 GB. Free memory was 960.3 MB in the beginning and 949.4 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 13.14 ms. Allocated memory is still 1.0 GB. Free memory is still 949.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 13.57 ms. Allocated memory is still 1.0 GB. Free memory is still 949.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 220.03 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.9 MB). Free memory was 949.4 MB in the beginning and 1.1 GB in the end (delta: -190.0 MB). Peak memory consumption was 22.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 435.15 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: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 11.5 GB. * Witness Printer took 32.46 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: 17]: integer overflow possible integer overflow possible We found a FailurePath: [L13] int x; [L14] x = __VERIFIER_nondet_int() [L15] COND TRUE x > __VERIFIER_nondet_int() [L16] COND TRUE x != 0 VAL [x=-2147483647] [L17] EXPR x - 1 [L17] x = x - 1 VAL [x=-2147483648] [L16] COND TRUE x != 0 VAL [x=-2147483648] [L17] x - 1 VAL [x=-2147483648] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 17 locations, 2 error locations. UNSAFE Result, 0.3s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 17 SDtfs, 6 SDslu, 17 SDs, 0 SdLazy, 20 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 33 NumberOfCodeBlocks, 33 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 17 ConstructedInterpolants, 0 QuantifiedInterpolants, 389 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...