./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted/Copenhagen_disj-1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_c7832a04-9b42-4562-8fed-61f251b068b9/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_c7832a04-9b42-4562-8fed-61f251b068b9/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_c7832a04-9b42-4562-8fed-61f251b068b9/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_c7832a04-9b42-4562-8fed-61f251b068b9/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted/Copenhagen_disj-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_c7832a04-9b42-4562-8fed-61f251b068b9/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_c7832a04-9b42-4562-8fed-61f251b068b9/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 66086dde0b191c29902f344504ecd9e9745e5c48 ....................................................................................................................................................................................................................................................................... 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 0.1.25-f470102 [2019-12-07 17:02:52,548 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 17:02:52,549 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 17:02:52,557 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 17:02:52,557 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 17:02:52,557 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 17:02:52,558 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 17:02:52,560 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 17:02:52,561 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 17:02:52,561 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 17:02:52,562 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 17:02:52,563 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 17:02:52,563 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 17:02:52,564 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 17:02:52,564 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 17:02:52,565 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 17:02:52,566 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 17:02:52,566 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 17:02:52,567 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 17:02:52,569 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 17:02:52,570 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 17:02:52,571 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 17:02:52,571 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 17:02:52,572 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 17:02:52,573 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 17:02:52,574 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 17:02:52,574 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 17:02:52,574 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 17:02:52,574 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 17:02:52,575 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 17:02:52,575 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 17:02:52,575 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 17:02:52,576 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 17:02:52,576 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 17:02:52,577 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 17:02:52,577 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 17:02:52,577 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 17:02:52,577 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 17:02:52,578 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 17:02:52,578 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 17:02:52,579 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 17:02:52,579 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_c7832a04-9b42-4562-8fed-61f251b068b9/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf [2019-12-07 17:02:52,589 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 17:02:52,589 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 17:02:52,589 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 17:02:52,590 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 17:02:52,590 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 17:02:52,590 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 17:02:52,590 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-12-07 17:02:52,590 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 17:02:52,590 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 17:02:52,590 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-12-07 17:02:52,590 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-12-07 17:02:52,591 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 17:02:52,591 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-12-07 17:02:52,591 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-12-07 17:02:52,591 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-12-07 17:02:52,591 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 17:02:52,592 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-12-07 17:02:52,592 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 17:02:52,592 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 17:02:52,592 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 17:02:52,592 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 17:02:52,592 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 17:02:52,592 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-12-07 17:02:52,592 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 17:02:52,593 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 17:02:52,593 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 17:02:52,593 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 17:02:52,593 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 17:02:52,593 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 17:02:52,593 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 17:02:52,593 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 17:02:52,593 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 17:02:52,594 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 17:02:52,594 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-12-07 17:02:52,594 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 17:02:52,594 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 17:02:52,594 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 17:02:52,594 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 17:02:52,594 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_c7832a04-9b42-4562-8fed-61f251b068b9/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 -> 66086dde0b191c29902f344504ecd9e9745e5c48 [2019-12-07 17:02:52,694 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 17:02:52,704 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 17:02:52,707 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 17:02:52,708 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 17:02:52,708 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 17:02:52,709 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_c7832a04-9b42-4562-8fed-61f251b068b9/bin/utaipan/../../sv-benchmarks/c/termination-crafted/Copenhagen_disj-1.c [2019-12-07 17:02:52,749 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c7832a04-9b42-4562-8fed-61f251b068b9/bin/utaipan/data/6c994b6c0/3b5c10e17dd04131bec2a35f747a9485/FLAGa6c2549dc [2019-12-07 17:02:53,080 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 17:02:53,081 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_c7832a04-9b42-4562-8fed-61f251b068b9/sv-benchmarks/c/termination-crafted/Copenhagen_disj-1.c [2019-12-07 17:02:53,084 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c7832a04-9b42-4562-8fed-61f251b068b9/bin/utaipan/data/6c994b6c0/3b5c10e17dd04131bec2a35f747a9485/FLAGa6c2549dc [2019-12-07 17:02:53,093 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_c7832a04-9b42-4562-8fed-61f251b068b9/bin/utaipan/data/6c994b6c0/3b5c10e17dd04131bec2a35f747a9485 [2019-12-07 17:02:53,095 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 17:02:53,096 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 17:02:53,096 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 17:02:53,097 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 17:02:53,099 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 17:02:53,099 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 05:02:53" (1/1) ... [2019-12-07 17:02:53,101 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ce49fbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:02:53, skipping insertion in model container [2019-12-07 17:02:53,101 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 05:02:53" (1/1) ... [2019-12-07 17:02:53,106 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 17:02:53,116 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 17:02:53,211 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 17:02:53,213 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 17:02:53,256 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 17:02:53,265 INFO L208 MainTranslator]: Completed translation [2019-12-07 17:02:53,265 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:02:53 WrapperNode [2019-12-07 17:02:53,265 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 17:02:53,266 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 17:02:53,266 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 17:02:53,266 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 17:02:53,271 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:02:53" (1/1) ... [2019-12-07 17:02:53,275 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:02:53" (1/1) ... [2019-12-07 17:02:53,286 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 17:02:53,286 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 17:02:53,287 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 17:02:53,287 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 17:02:53,293 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:02:53" (1/1) ... [2019-12-07 17:02:53,293 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:02:53" (1/1) ... [2019-12-07 17:02:53,293 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:02:53" (1/1) ... [2019-12-07 17:02:53,293 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:02:53" (1/1) ... [2019-12-07 17:02:53,295 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:02:53" (1/1) ... [2019-12-07 17:02:53,297 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:02:53" (1/1) ... [2019-12-07 17:02:53,298 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:02:53" (1/1) ... [2019-12-07 17:02:53,298 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 17:02:53,299 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 17:02:53,299 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 17:02:53,299 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 17:02:53,299 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:02:53" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c7832a04-9b42-4562-8fed-61f251b068b9/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 [2019-12-07 17:02:53,340 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 17:02:53,340 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 17:02:53,453 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 17:02:53,453 INFO L287 CfgBuilder]: Removed 5 assume(true) statements. [2019-12-07 17:02:53,454 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 05:02:53 BoogieIcfgContainer [2019-12-07 17:02:53,454 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 17:02:53,455 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 17:02:53,455 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 17:02:53,457 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 17:02:53,457 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 05:02:53" (1/3) ... [2019-12-07 17:02:53,457 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b2c49ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 05:02:53, skipping insertion in model container [2019-12-07 17:02:53,457 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:02:53" (2/3) ... [2019-12-07 17:02:53,458 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b2c49ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 05:02:53, skipping insertion in model container [2019-12-07 17:02:53,458 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 05:02:53" (3/3) ... [2019-12-07 17:02:53,459 INFO L109 eAbstractionObserver]: Analyzing ICFG Copenhagen_disj-1.c [2019-12-07 17:02:53,465 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 17:02:53,469 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-12-07 17:02:53,477 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-12-07 17:02:53,491 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 17:02:53,491 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 17:02:53,491 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 17:02:53,491 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 17:02:53,491 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 17:02:53,491 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 17:02:53,491 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 17:02:53,492 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 17:02:53,501 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2019-12-07 17:02:53,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-12-07 17:02:53,504 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:02:53,504 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-12-07 17:02:53,505 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 17:02:53,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:02:53,508 INFO L82 PathProgramCache]: Analyzing trace with hash 31073, now seen corresponding path program 1 times [2019-12-07 17:02:53,514 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 17:02:53,514 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169269757] [2019-12-07 17:02:53,514 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:02:53,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:02:53,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:02:53,603 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169269757] [2019-12-07 17:02:53,603 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 17:02:53,604 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-12-07 17:02:53,605 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974711280] [2019-12-07 17:02:53,607 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 17:02:53,608 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 17:02:53,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 17:02:53,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 17:02:53,617 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 3 states. [2019-12-07 17:02:53,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:02:53,647 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2019-12-07 17:02:53,647 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 17:02:53,648 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2019-12-07 17:02:53,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:02:53,654 INFO L225 Difference]: With dead ends: 19 [2019-12-07 17:02:53,654 INFO L226 Difference]: Without dead ends: 17 [2019-12-07 17:02:53,656 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 17:02:53,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-12-07 17:02:53,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 12. [2019-12-07 17:02:53,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-12-07 17:02:53,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2019-12-07 17:02:53,677 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 3 [2019-12-07 17:02:53,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:02:53,678 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2019-12-07 17:02:53,678 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 17:02:53,678 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2019-12-07 17:02:53,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-12-07 17:02:53,678 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:02:53,678 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-12-07 17:02:53,678 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 17:02:53,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:02:53,679 INFO L82 PathProgramCache]: Analyzing trace with hash 963307, now seen corresponding path program 1 times [2019-12-07 17:02:53,679 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 17:02:53,679 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947095372] [2019-12-07 17:02:53,679 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:02:53,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:02:53,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:02:53,700 INFO L174 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2019-12-07 17:02:53,700 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 17:02:53,711 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 05:02:53 BoogieIcfgContainer [2019-12-07 17:02:53,711 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 17:02:53,712 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 17:02:53,712 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 17:02:53,712 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 17:02:53,712 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 05:02:53" (3/4) ... [2019-12-07 17:02:53,713 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-12-07 17:02:53,738 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_c7832a04-9b42-4562-8fed-61f251b068b9/bin/utaipan/witness.graphml [2019-12-07 17:02:53,738 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 17:02:53,739 INFO L168 Benchmark]: Toolchain (without parser) took 642.79 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 100.1 MB). Free memory was 943.5 MB in the beginning and 1.1 GB in the end (delta: -107.1 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 17:02:53,739 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 958.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 17:02:53,740 INFO L168 Benchmark]: CACSL2BoogieTranslator took 169.04 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 100.1 MB). Free memory was 943.5 MB in the beginning and 1.1 GB in the end (delta: -150.4 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. [2019-12-07 17:02:53,740 INFO L168 Benchmark]: Boogie Procedure Inliner took 20.51 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 17:02:53,740 INFO L168 Benchmark]: Boogie Preprocessor took 12.14 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 17:02:53,741 INFO L168 Benchmark]: RCFGBuilder took 155.27 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 16.5 MB). Peak memory consumption was 16.5 MB. Max. memory is 11.5 GB. [2019-12-07 17:02:53,741 INFO L168 Benchmark]: TraceAbstraction took 256.76 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 26.8 MB). Peak memory consumption was 26.8 MB. Max. memory is 11.5 GB. [2019-12-07 17:02:53,741 INFO L168 Benchmark]: Witness Printer took 26.18 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 17:02:53,743 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 958.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 169.04 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 100.1 MB). Free memory was 943.5 MB in the beginning and 1.1 GB in the end (delta: -150.4 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 20.51 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 12.14 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 155.27 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 16.5 MB). Peak memory consumption was 16.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 256.76 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 26.8 MB). Peak memory consumption was 26.8 MB. Max. memory is 11.5 GB. * Witness Printer took 26.18 ms. Allocated memory is still 1.1 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: 18]: integer overflow possible integer overflow possible We found a FailurePath: [L13] int x, y, oldx; [L14] x = __VERIFIER_nondet_int() [L15] y = __VERIFIER_nondet_int() [L16] COND TRUE x >= 0 || y >= 0 [L17] oldx = x [L18] y - 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 4 error locations. Result: UNSAFE, OverallTime: 0.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 6 SDtfs, 7 SDslu, 3 SDs, 0 SdLazy, 10 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred in iteration=1, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 5 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 2 ConstructedInterpolants, 0 QuantifiedInterpolants, 12 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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...