./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex2.08.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_cf1bea6c-4c53-44db-92cc-52c6512d76e4/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_cf1bea6c-4c53-44db-92cc-52c6512d76e4/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_cf1bea6c-4c53-44db-92cc-52c6512d76e4/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_cf1bea6c-4c53-44db-92cc-52c6512d76e4/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex2.08.c -s /tmp/vcloud-vcloud-master/worker/run_dir_cf1bea6c-4c53-44db-92cc-52c6512d76e4/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_cf1bea6c-4c53-44db-92cc-52c6512d76e4/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 1f5fa094547400d5f3e334e13e9908f65492f551 ............................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW) --- Real Ultimate output --- This is Ultimate 0.1.24-6b5699a [2019-11-26 02:16:59,203 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 02:16:59,205 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 02:16:59,218 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 02:16:59,218 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 02:16:59,220 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 02:16:59,221 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 02:16:59,230 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 02:16:59,235 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 02:16:59,238 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 02:16:59,240 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 02:16:59,241 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 02:16:59,241 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 02:16:59,243 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 02:16:59,244 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 02:16:59,245 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 02:16:59,246 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 02:16:59,247 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 02:16:59,249 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 02:16:59,252 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 02:16:59,255 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 02:16:59,258 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 02:16:59,260 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 02:16:59,260 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 02:16:59,263 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 02:16:59,263 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 02:16:59,263 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 02:16:59,264 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 02:16:59,265 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 02:16:59,265 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 02:16:59,266 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 02:16:59,266 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 02:16:59,267 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 02:16:59,268 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 02:16:59,268 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 02:16:59,269 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 02:16:59,269 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 02:16:59,269 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 02:16:59,269 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 02:16:59,270 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 02:16:59,271 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 02:16:59,272 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_cf1bea6c-4c53-44db-92cc-52c6512d76e4/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf [2019-11-26 02:16:59,305 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 02:16:59,306 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 02:16:59,306 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 02:16:59,307 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 02:16:59,307 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 02:16:59,307 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 02:16:59,307 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-26 02:16:59,308 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 02:16:59,308 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 02:16:59,308 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-26 02:16:59,308 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-26 02:16:59,308 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 02:16:59,309 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-26 02:16:59,309 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-26 02:16:59,309 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-26 02:16:59,310 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 02:16:59,310 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-26 02:16:59,311 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-26 02:16:59,311 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 02:16:59,311 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-26 02:16:59,311 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 02:16:59,312 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-26 02:16:59,312 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-11-26 02:16:59,312 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-26 02:16:59,312 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-26 02:16:59,312 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 02:16:59,313 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 02:16:59,313 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 02:16:59,313 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:16:59,313 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 02:16:59,314 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 02:16:59,314 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-26 02:16:59,314 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-26 02:16:59,314 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-26 02:16:59,314 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-26 02:16:59,315 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 02:16:59,315 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_cf1bea6c-4c53-44db-92cc-52c6512d76e4/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1f5fa094547400d5f3e334e13e9908f65492f551 [2019-11-26 02:16:59,474 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 02:16:59,489 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 02:16:59,492 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 02:16:59,493 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 02:16:59,493 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 02:16:59,494 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_cf1bea6c-4c53-44db-92cc-52c6512d76e4/bin/utaipan/../../sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex2.08.c [2019-11-26 02:16:59,549 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_cf1bea6c-4c53-44db-92cc-52c6512d76e4/bin/utaipan/data/98cbee950/b5b9b99e37a44d46a410faca4487759f/FLAGca70ff3c8 [2019-11-26 02:16:59,914 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 02:16:59,914 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_cf1bea6c-4c53-44db-92cc-52c6512d76e4/sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex2.08.c [2019-11-26 02:16:59,919 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_cf1bea6c-4c53-44db-92cc-52c6512d76e4/bin/utaipan/data/98cbee950/b5b9b99e37a44d46a410faca4487759f/FLAGca70ff3c8 [2019-11-26 02:17:00,333 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_cf1bea6c-4c53-44db-92cc-52c6512d76e4/bin/utaipan/data/98cbee950/b5b9b99e37a44d46a410faca4487759f [2019-11-26 02:17:00,336 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 02:17:00,337 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 02:17:00,338 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 02:17:00,338 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 02:17:00,341 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 02:17:00,348 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:17:00" (1/1) ... [2019-11-26 02:17:00,350 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67d49a23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:17:00, skipping insertion in model container [2019-11-26 02:17:00,350 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:17:00" (1/1) ... [2019-11-26 02:17:00,358 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 02:17:00,372 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:17:00,521 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:17:00,529 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 02:17:00,622 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:17:00,639 INFO L205 MainTranslator]: Completed translation [2019-11-26 02:17:00,641 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:17:00 WrapperNode [2019-11-26 02:17:00,641 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 02:17:00,642 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 02:17:00,642 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 02:17:00,642 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 02:17:00,649 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:17:00" (1/1) ... [2019-11-26 02:17:00,655 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:17:00" (1/1) ... [2019-11-26 02:17:00,670 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 02:17:00,671 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 02:17:00,671 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 02:17:00,671 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 02:17:00,679 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:17:00" (1/1) ... [2019-11-26 02:17:00,679 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:17:00" (1/1) ... [2019-11-26 02:17:00,680 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:17:00" (1/1) ... [2019-11-26 02:17:00,681 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:17:00" (1/1) ... [2019-11-26 02:17:00,684 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:17:00" (1/1) ... [2019-11-26 02:17:00,688 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:17:00" (1/1) ... [2019-11-26 02:17:00,692 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:17:00" (1/1) ... [2019-11-26 02:17:00,693 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 02:17:00,693 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 02:17:00,693 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 02:17:00,693 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 02:17:00,694 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:17:00" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cf1bea6c-4c53-44db-92cc-52c6512d76e4/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:17:00,744 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 02:17:00,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 02:17:00,937 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 02:17:00,938 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-26 02:17:00,939 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:17:00 BoogieIcfgContainer [2019-11-26 02:17:00,939 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 02:17:00,940 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 02:17:00,940 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 02:17:00,942 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 02:17:00,943 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 02:17:00" (1/3) ... [2019-11-26 02:17:00,943 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ca70b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:17:00, skipping insertion in model container [2019-11-26 02:17:00,944 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:17:00" (2/3) ... [2019-11-26 02:17:00,944 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ca70b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:17:00, skipping insertion in model container [2019-11-26 02:17:00,944 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:17:00" (3/3) ... [2019-11-26 02:17:00,945 INFO L109 eAbstractionObserver]: Analyzing ICFG ChenFlurMukhopadhyay-SAS2012-Ex2.08.c [2019-11-26 02:17:00,955 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 02:17:00,959 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2019-11-26 02:17:00,968 INFO L249 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-11-26 02:17:00,987 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 02:17:00,987 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-26 02:17:00,987 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 02:17:00,987 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 02:17:00,987 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 02:17:00,987 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 02:17:00,987 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 02:17:00,987 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 02:17:01,000 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2019-11-26 02:17:01,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-11-26 02:17:01,007 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:17:01,008 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-11-26 02:17:01,008 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-26 02:17:01,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:17:01,014 INFO L82 PathProgramCache]: Analyzing trace with hash 31073, now seen corresponding path program 1 times [2019-11-26 02:17:01,020 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:17:01,021 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055757443] [2019-11-26 02:17:01,021 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:17:01,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-26 02:17:01,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-26 02:17:01,100 INFO L174 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2019-11-26 02:17:01,101 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-26 02:17:01,112 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 02:17:01 BoogieIcfgContainer [2019-11-26 02:17:01,112 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-26 02:17:01,112 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-26 02:17:01,112 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-26 02:17:01,112 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-26 02:17:01,113 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:17:00" (3/4) ... [2019-11-26 02:17:01,115 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-26 02:17:01,145 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_cf1bea6c-4c53-44db-92cc-52c6512d76e4/bin/utaipan/witness.graphml [2019-11-26 02:17:01,145 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-26 02:17:01,147 INFO L168 Benchmark]: Toolchain (without parser) took 809.40 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 188.7 MB). Free memory was 948.7 MB in the beginning and 1.1 GB in the end (delta: -196.7 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:17:01,147 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:17:01,148 INFO L168 Benchmark]: CACSL2BoogieTranslator took 303.71 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 188.7 MB). Free memory was 948.7 MB in the beginning and 1.2 GB in the end (delta: -230.3 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. [2019-11-26 02:17:01,148 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.92 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. [2019-11-26 02:17:01,149 INFO L168 Benchmark]: Boogie Preprocessor took 22.31 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. [2019-11-26 02:17:01,149 INFO L168 Benchmark]: RCFGBuilder took 245.86 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 20.6 MB). Peak memory consumption was 20.6 MB. Max. memory is 11.5 GB. [2019-11-26 02:17:01,150 INFO L168 Benchmark]: TraceAbstraction took 172.05 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. [2019-11-26 02:17:01,150 INFO L168 Benchmark]: Witness Printer took 32.81 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: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. [2019-11-26 02:17:01,153 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 303.71 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 188.7 MB). Free memory was 948.7 MB in the beginning and 1.2 GB in the end (delta: -230.3 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 28.92 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. * Boogie Preprocessor took 22.31 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 245.86 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 20.6 MB). Peak memory consumption was 20.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 172.05 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. * Witness Printer took 32.81 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: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 27]: integer overflow possible integer overflow possible We found a FailurePath: [L23] int x, y; [L24] x = __VERIFIER_nondet_int() [L25] y = __VERIFIER_nondet_int() [L26] COND TRUE x > 0 [L27] 2*y - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 6 error locations. Result: UNSAFE, OverallTime: 0.1s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...