./Ultimate.py --spec ../../sv-benchmarks/c/NoOverflows.prp --file ../../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig3_false-no-overflow.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_83ec7eb9-f308-4991-aaea-30f2f8fe1e21/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_83ec7eb9-f308-4991-aaea-30f2f8fe1e21/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_83ec7eb9-f308-4991-aaea-30f2f8fe1e21/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_83ec7eb9-f308-4991-aaea-30f2f8fe1e21/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig3_false-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_83ec7eb9-f308-4991-aaea-30f2f8fe1e21/bin-2019/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_83ec7eb9-f308-4991-aaea-30f2f8fe1e21/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 c49ca63b076bdfdfd4da2b39429bac3c0da8332d .................................................................................................................................................................................................................................................................................................................................................................................................. 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 0.1.23-5842f4b [2018-11-18 17:35:02,315 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 17:35:02,316 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 17:35:02,325 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 17:35:02,325 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 17:35:02,326 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 17:35:02,327 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 17:35:02,328 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 17:35:02,329 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 17:35:02,330 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 17:35:02,331 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 17:35:02,331 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 17:35:02,332 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 17:35:02,332 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 17:35:02,333 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 17:35:02,334 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 17:35:02,334 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 17:35:02,336 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 17:35:02,338 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 17:35:02,339 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 17:35:02,339 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 17:35:02,340 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 17:35:02,342 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 17:35:02,343 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 17:35:02,343 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 17:35:02,344 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 17:35:02,344 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 17:35:02,345 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 17:35:02,346 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 17:35:02,347 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 17:35:02,347 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 17:35:02,348 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 17:35:02,348 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 17:35:02,348 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 17:35:02,349 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 17:35:02,350 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 17:35:02,350 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_83ec7eb9-f308-4991-aaea-30f2f8fe1e21/bin-2019/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf [2018-11-18 17:35:02,361 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 17:35:02,361 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 17:35:02,362 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 17:35:02,362 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-18 17:35:02,362 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-18 17:35:02,362 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-18 17:35:02,362 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-18 17:35:02,362 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-18 17:35:02,363 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-18 17:35:02,363 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-18 17:35:02,363 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-18 17:35:02,363 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-18 17:35:02,363 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-18 17:35:02,364 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 17:35:02,364 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-18 17:35:02,364 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 17:35:02,364 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 17:35:02,364 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 17:35:02,364 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 17:35:02,364 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 17:35:02,364 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2018-11-18 17:35:02,365 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 17:35:02,365 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 17:35:02,365 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 17:35:02,367 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 17:35:02,367 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 17:35:02,367 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 17:35:02,367 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 17:35:02,368 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 17:35:02,368 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 17:35:02,368 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 17:35:02,368 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 17:35:02,368 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-18 17:35:02,368 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 17:35:02,368 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 17:35:02,368 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-18 17:35:02,369 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_83ec7eb9-f308-4991-aaea-30f2f8fe1e21/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 -> c49ca63b076bdfdfd4da2b39429bac3c0da8332d [2018-11-18 17:35:02,394 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 17:35:02,403 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 17:35:02,406 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 17:35:02,407 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 17:35:02,407 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 17:35:02,408 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_83ec7eb9-f308-4991-aaea-30f2f8fe1e21/bin-2019/utaipan/../../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig3_false-no-overflow.c [2018-11-18 17:35:02,458 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_83ec7eb9-f308-4991-aaea-30f2f8fe1e21/bin-2019/utaipan/data/9ff31f16e/623828d73c9f4c7e86f84236b6d855ac/FLAG9575330bf [2018-11-18 17:35:02,803 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 17:35:02,803 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_83ec7eb9-f308-4991-aaea-30f2f8fe1e21/sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig3_false-no-overflow.c [2018-11-18 17:35:02,808 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_83ec7eb9-f308-4991-aaea-30f2f8fe1e21/bin-2019/utaipan/data/9ff31f16e/623828d73c9f4c7e86f84236b6d855ac/FLAG9575330bf [2018-11-18 17:35:02,819 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_83ec7eb9-f308-4991-aaea-30f2f8fe1e21/bin-2019/utaipan/data/9ff31f16e/623828d73c9f4c7e86f84236b6d855ac [2018-11-18 17:35:02,822 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 17:35:02,823 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 17:35:02,823 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 17:35:02,824 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 17:35:02,826 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 17:35:02,827 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 05:35:02" (1/1) ... [2018-11-18 17:35:02,829 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65ec56fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:35:02, skipping insertion in model container [2018-11-18 17:35:02,829 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 05:35:02" (1/1) ... [2018-11-18 17:35:02,837 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 17:35:02,855 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 17:35:02,993 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 17:35:02,996 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 17:35:03,008 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 17:35:03,018 INFO L195 MainTranslator]: Completed translation [2018-11-18 17:35:03,019 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:35:03 WrapperNode [2018-11-18 17:35:03,019 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 17:35:03,020 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 17:35:03,020 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 17:35:03,020 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 17:35:03,027 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:35:03" (1/1) ... [2018-11-18 17:35:03,031 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:35:03" (1/1) ... [2018-11-18 17:35:03,036 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 17:35:03,036 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 17:35:03,036 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 17:35:03,036 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 17:35:03,047 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:35:03" (1/1) ... [2018-11-18 17:35:03,048 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:35:03" (1/1) ... [2018-11-18 17:35:03,048 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:35:03" (1/1) ... [2018-11-18 17:35:03,048 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:35:03" (1/1) ... [2018-11-18 17:35:03,054 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:35:03" (1/1) ... [2018-11-18 17:35:03,059 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:35:03" (1/1) ... [2018-11-18 17:35:03,060 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:35:03" (1/1) ... [2018-11-18 17:35:03,061 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 17:35:03,061 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 17:35:03,061 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 17:35:03,061 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 17:35:03,062 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:35:03" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_83ec7eb9-f308-4991-aaea-30f2f8fe1e21/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 [2018-11-18 17:35:03,225 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 17:35:03,226 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 17:35:03,226 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 17:35:03,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 17:35:03,227 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 17:35:03,227 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 17:35:03,449 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 17:35:03,449 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 05:35:03 BoogieIcfgContainer [2018-11-18 17:35:03,449 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 17:35:03,450 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 17:35:03,450 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 17:35:03,452 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 17:35:03,452 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 05:35:02" (1/3) ... [2018-11-18 17:35:03,453 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f668d26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 05:35:03, skipping insertion in model container [2018-11-18 17:35:03,453 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:35:03" (2/3) ... [2018-11-18 17:35:03,453 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f668d26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 05:35:03, skipping insertion in model container [2018-11-18 17:35:03,453 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 05:35:03" (3/3) ... [2018-11-18 17:35:03,455 INFO L112 eAbstractionObserver]: Analyzing ICFG PodelskiRybalchenko-TACAS2011-Fig3_false-no-overflow.c [2018-11-18 17:35:03,463 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 17:35:03,469 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2018-11-18 17:35:03,481 INFO L257 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2018-11-18 17:35:03,504 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 17:35:03,504 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 17:35:03,504 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 17:35:03,504 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 17:35:03,504 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 17:35:03,504 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 17:35:03,504 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 17:35:03,504 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 17:35:03,518 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2018-11-18 17:35:03,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-11-18 17:35:03,524 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:35:03,524 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 17:35:03,526 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 17:35:03,531 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:35:03,532 INFO L82 PathProgramCache]: Analyzing trace with hash 1241711279, now seen corresponding path program 1 times [2018-11-18 17:35:03,534 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 17:35:03,566 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:35:03,567 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:35:03,567 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:35:03,567 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 17:35:03,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:35:03,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 17:35:03,652 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 17:35:03,652 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 17:35:03,652 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 17:35:03,655 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 17:35:03,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 17:35:03,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 17:35:03,668 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 4 states. [2018-11-18 17:35:03,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:35:03,778 INFO L93 Difference]: Finished difference Result 56 states and 64 transitions. [2018-11-18 17:35:03,778 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-18 17:35:03,779 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2018-11-18 17:35:03,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:35:03,786 INFO L225 Difference]: With dead ends: 56 [2018-11-18 17:35:03,786 INFO L226 Difference]: Without dead ends: 36 [2018-11-18 17:35:03,789 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-18 17:35:03,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-11-18 17:35:03,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 25. [2018-11-18 17:35:03,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-11-18 17:35:03,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2018-11-18 17:35:03,817 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 9 [2018-11-18 17:35:03,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:35:03,817 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2018-11-18 17:35:03,817 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 17:35:03,818 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2018-11-18 17:35:03,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-11-18 17:35:03,818 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:35:03,818 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 17:35:03,818 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 17:35:03,819 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:35:03,819 INFO L82 PathProgramCache]: Analyzing trace with hash 1241711471, now seen corresponding path program 1 times [2018-11-18 17:35:03,819 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 17:35:03,820 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:35:03,820 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:35:03,820 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:35:03,820 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 17:35:03,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:35:03,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 17:35:03,855 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 17:35:03,855 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 17:35:03,855 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 17:35:03,856 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 17:35:03,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 17:35:03,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 17:35:03,856 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand 4 states. [2018-11-18 17:35:03,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:35:03,899 INFO L93 Difference]: Finished difference Result 43 states and 47 transitions. [2018-11-18 17:35:03,900 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-18 17:35:03,900 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2018-11-18 17:35:03,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:35:03,901 INFO L225 Difference]: With dead ends: 43 [2018-11-18 17:35:03,901 INFO L226 Difference]: Without dead ends: 42 [2018-11-18 17:35:03,902 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-18 17:35:03,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-11-18 17:35:03,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 29. [2018-11-18 17:35:03,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-11-18 17:35:03,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2018-11-18 17:35:03,905 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 9 [2018-11-18 17:35:03,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:35:03,906 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2018-11-18 17:35:03,906 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 17:35:03,906 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2018-11-18 17:35:03,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-18 17:35:03,906 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:35:03,906 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 17:35:03,907 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 17:35:03,907 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:35:03,907 INFO L82 PathProgramCache]: Analyzing trace with hash -161655964, now seen corresponding path program 1 times [2018-11-18 17:35:03,907 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 17:35:03,908 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:35:03,908 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:35:03,908 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:35:03,908 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 17:35:03,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:35:03,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 17:35:03,927 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 17:35:03,927 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 17:35:03,927 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 17:35:03,927 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 17:35:03,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 17:35:03,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 17:35:03,928 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 3 states. [2018-11-18 17:35:03,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:35:03,947 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2018-11-18 17:35:03,947 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 17:35:03,948 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-11-18 17:35:03,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:35:03,948 INFO L225 Difference]: With dead ends: 29 [2018-11-18 17:35:03,948 INFO L226 Difference]: Without dead ends: 27 [2018-11-18 17:35:03,949 INFO L604 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 [2018-11-18 17:35:03,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-11-18 17:35:03,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-11-18 17:35:03,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-11-18 17:35:03,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2018-11-18 17:35:03,952 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 10 [2018-11-18 17:35:03,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:35:03,953 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2018-11-18 17:35:03,953 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 17:35:03,953 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2018-11-18 17:35:03,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-18 17:35:03,954 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:35:03,954 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 17:35:03,954 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 17:35:03,954 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:35:03,955 INFO L82 PathProgramCache]: Analyzing trace with hash -161650006, now seen corresponding path program 1 times [2018-11-18 17:35:03,955 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 17:35:03,955 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:35:03,955 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:35:03,956 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:35:03,956 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 17:35:03,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:35:03,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 17:35:03,981 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 17:35:03,981 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 17:35:03,981 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 17:35:03,982 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 17:35:03,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 17:35:03,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 17:35:03,982 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand 3 states. [2018-11-18 17:35:03,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:35:03,996 INFO L93 Difference]: Finished difference Result 27 states and 30 transitions. [2018-11-18 17:35:03,997 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 17:35:03,997 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-11-18 17:35:03,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:35:03,998 INFO L225 Difference]: With dead ends: 27 [2018-11-18 17:35:03,998 INFO L226 Difference]: Without dead ends: 26 [2018-11-18 17:35:03,998 INFO L604 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 [2018-11-18 17:35:03,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-11-18 17:35:04,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2018-11-18 17:35:04,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-11-18 17:35:04,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2018-11-18 17:35:04,002 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 10 [2018-11-18 17:35:04,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:35:04,002 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2018-11-18 17:35:04,002 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 17:35:04,002 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2018-11-18 17:35:04,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-18 17:35:04,003 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:35:04,003 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 17:35:04,003 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 17:35:04,003 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:35:04,004 INFO L82 PathProgramCache]: Analyzing trace with hash -716182831, now seen corresponding path program 1 times [2018-11-18 17:35:04,004 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 17:35:04,004 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:35:04,004 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:35:04,005 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:35:04,005 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 17:35:04,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 17:35:04,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 17:35:04,030 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-18 17:35:04,047 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 05:35:04 BoogieIcfgContainer [2018-11-18 17:35:04,047 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 17:35:04,047 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 17:35:04,047 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 17:35:04,048 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 17:35:04,048 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 05:35:03" (3/4) ... [2018-11-18 17:35:04,050 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-18 17:35:04,088 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_83ec7eb9-f308-4991-aaea-30f2f8fe1e21/bin-2019/utaipan/witness.graphml [2018-11-18 17:35:04,088 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 17:35:04,088 INFO L168 Benchmark]: Toolchain (without parser) took 1266.49 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 173.5 MB). Free memory was 953.1 MB in the beginning and 1.1 GB in the end (delta: -152.8 MB). Peak memory consumption was 20.7 MB. Max. memory is 11.5 GB. [2018-11-18 17:35:04,089 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 985.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 17:35:04,090 INFO L168 Benchmark]: CACSL2BoogieTranslator took 195.94 ms. Allocated memory is still 1.0 GB. Free memory was 953.1 MB in the beginning and 942.2 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 11.5 GB. [2018-11-18 17:35:04,090 INFO L168 Benchmark]: Boogie Procedure Inliner took 15.87 ms. Allocated memory is still 1.0 GB. Free memory is still 942.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 17:35:04,090 INFO L168 Benchmark]: Boogie Preprocessor took 25.12 ms. Allocated memory is still 1.0 GB. Free memory was 942.2 MB in the beginning and 939.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-18 17:35:04,091 INFO L168 Benchmark]: RCFGBuilder took 387.98 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 173.5 MB). Free memory was 939.6 MB in the beginning and 1.2 GB in the end (delta: -219.8 MB). Peak memory consumption was 20.9 MB. Max. memory is 11.5 GB. [2018-11-18 17:35:04,091 INFO L168 Benchmark]: TraceAbstraction took 597.23 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: 53.5 MB). Peak memory consumption was 53.5 MB. Max. memory is 11.5 GB. [2018-11-18 17:35:04,092 INFO L168 Benchmark]: Witness Printer took 40.53 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. [2018-11-18 17:35:04,096 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 985.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 195.94 ms. Allocated memory is still 1.0 GB. Free memory was 953.1 MB in the beginning and 942.2 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 15.87 ms. Allocated memory is still 1.0 GB. Free memory is still 942.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 25.12 ms. Allocated memory is still 1.0 GB. Free memory was 942.2 MB in the beginning and 939.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 387.98 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 173.5 MB). Free memory was 939.6 MB in the beginning and 1.2 GB in the end (delta: -219.8 MB). Peak memory consumption was 20.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 597.23 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: 53.5 MB). Peak memory consumption was 53.5 MB. Max. memory is 11.5 GB. * Witness Printer took 40.53 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: 22]: integer overflow possible integer overflow possible We found a FailurePath: [L12] int x = __VERIFIER_nondet_int(); [L13] int y = __VERIFIER_nondet_int(); [L14] COND TRUE x > 0 && y > 0 [L15] int old_x = x; [L16] int old_y = y; [L17] COND FALSE !(__VERIFIER_nondet_int()) [L21] EXPR old_y - 2 [L21] x = old_y - 2 VAL [old_x=2147483647, old_y=1, x=-1, y=1] [L22] old_x + 1 VAL [old_x=2147483647, old_y=1, x=-1, y=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 25 locations, 6 error locations. UNSAFE Result, 0.5s OverallTime, 5 OverallIterations, 1 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 72 SDtfs, 74 SDslu, 80 SDs, 0 SdLazy, 45 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=2, 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, 4 MinimizatonAttempts, 24 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 49 NumberOfCodeBlocks, 49 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 34 ConstructedInterpolants, 0 QuantifiedInterpolants, 526 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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...