./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.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 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_05f8f52f-26b0-48e3-b458-def2d3c3c24a/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_05f8f52f-26b0-48e3-b458-def2d3c3c24a/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_05f8f52f-26b0-48e3-b458-def2d3c3c24a/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_05f8f52f-26b0-48e3-b458-def2d3c3c24a/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_05f8f52f-26b0-48e3-b458-def2d3c3c24a/bin-2019/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_05f8f52f-26b0-48e3-b458-def2d3c3c24a/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 0.1.23-635dfa2 [2018-12-02 20:42:41,221 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-02 20:42:41,222 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-02 20:42:41,228 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-02 20:42:41,228 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-02 20:42:41,229 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-02 20:42:41,229 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-02 20:42:41,230 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-02 20:42:41,231 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-02 20:42:41,231 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-02 20:42:41,232 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-02 20:42:41,232 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-02 20:42:41,232 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-02 20:42:41,233 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-02 20:42:41,233 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-02 20:42:41,234 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-02 20:42:41,234 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-02 20:42:41,235 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-02 20:42:41,236 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-02 20:42:41,237 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-02 20:42:41,237 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-02 20:42:41,238 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-02 20:42:41,239 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-02 20:42:41,239 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-02 20:42:41,239 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-02 20:42:41,240 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-02 20:42:41,240 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-02 20:42:41,241 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-02 20:42:41,241 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-02 20:42:41,242 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-02 20:42:41,242 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-02 20:42:41,242 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-02 20:42:41,242 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-02 20:42:41,242 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-02 20:42:41,243 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-02 20:42:41,243 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-02 20:42:41,243 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_05f8f52f-26b0-48e3-b458-def2d3c3c24a/bin-2019/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf [2018-12-02 20:42:41,250 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-02 20:42:41,250 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-02 20:42:41,251 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-02 20:42:41,251 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-02 20:42:41,251 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-02 20:42:41,251 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-02 20:42:41,251 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-02 20:42:41,251 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-02 20:42:41,251 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-02 20:42:41,252 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-02 20:42:41,252 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-02 20:42:41,252 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-02 20:42:41,252 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-02 20:42:41,252 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-02 20:42:41,252 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-12-02 20:42:41,252 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-02 20:42:41,252 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-02 20:42:41,253 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-02 20:42:41,253 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-02 20:42:41,253 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-02 20:42:41,253 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2018-12-02 20:42:41,253 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-02 20:42:41,253 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-02 20:42:41,253 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-02 20:42:41,253 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-02 20:42:41,253 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-02 20:42:41,253 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-02 20:42:41,253 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-02 20:42:41,254 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-02 20:42:41,254 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-02 20:42:41,254 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-02 20:42:41,254 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-02 20:42:41,254 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-02 20:42:41,254 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-02 20:42:41,254 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-02 20:42:41,254 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_05f8f52f-26b0-48e3-b458-def2d3c3c24a/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 [2018-12-02 20:42:41,271 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-02 20:42:41,277 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-02 20:42:41,279 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-02 20:42:41,280 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-02 20:42:41,280 INFO L276 PluginConnector]: CDTParser initialized [2018-12-02 20:42:41,280 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_05f8f52f-26b0-48e3-b458-def2d3c3c24a/bin-2019/utaipan/../../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig3_false-no-overflow.c [2018-12-02 20:42:41,314 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_05f8f52f-26b0-48e3-b458-def2d3c3c24a/bin-2019/utaipan/data/a569dcf7c/f105ec3c3011423b8c7035980185a86f/FLAG25cbfb84f [2018-12-02 20:42:41,709 INFO L307 CDTParser]: Found 1 translation units. [2018-12-02 20:42:41,709 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_05f8f52f-26b0-48e3-b458-def2d3c3c24a/sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig3_false-no-overflow.c [2018-12-02 20:42:41,713 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_05f8f52f-26b0-48e3-b458-def2d3c3c24a/bin-2019/utaipan/data/a569dcf7c/f105ec3c3011423b8c7035980185a86f/FLAG25cbfb84f [2018-12-02 20:42:41,721 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_05f8f52f-26b0-48e3-b458-def2d3c3c24a/bin-2019/utaipan/data/a569dcf7c/f105ec3c3011423b8c7035980185a86f [2018-12-02 20:42:41,723 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-02 20:42:41,724 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-02 20:42:41,724 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-02 20:42:41,725 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-02 20:42:41,728 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-02 20:42:41,728 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:42:41" (1/1) ... [2018-12-02 20:42:41,730 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c04efe7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:42:41, skipping insertion in model container [2018-12-02 20:42:41,730 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:42:41" (1/1) ... [2018-12-02 20:42:41,736 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-02 20:42:41,747 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-02 20:42:41,829 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 20:42:41,832 INFO L191 MainTranslator]: Completed pre-run [2018-12-02 20:42:41,840 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 20:42:41,848 INFO L195 MainTranslator]: Completed translation [2018-12-02 20:42:41,848 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:42:41 WrapperNode [2018-12-02 20:42:41,848 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-02 20:42:41,849 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-02 20:42:41,849 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-02 20:42:41,849 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-02 20:42:41,854 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:42:41" (1/1) ... [2018-12-02 20:42:41,856 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:42:41" (1/1) ... [2018-12-02 20:42:41,860 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-02 20:42:41,860 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-02 20:42:41,860 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-02 20:42:41,860 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-02 20:42:41,865 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:42:41" (1/1) ... [2018-12-02 20:42:41,865 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:42:41" (1/1) ... [2018-12-02 20:42:41,865 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:42:41" (1/1) ... [2018-12-02 20:42:41,866 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:42:41" (1/1) ... [2018-12-02 20:42:41,867 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:42:41" (1/1) ... [2018-12-02 20:42:41,870 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:42:41" (1/1) ... [2018-12-02 20:42:41,870 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:42:41" (1/1) ... [2018-12-02 20:42:41,871 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-02 20:42:41,871 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-02 20:42:41,871 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-02 20:42:41,871 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-02 20:42:41,871 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:42:41" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_05f8f52f-26b0-48e3-b458-def2d3c3c24a/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 [2018-12-02 20:42:41,931 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-02 20:42:41,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-02 20:42:41,931 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-02 20:42:41,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-02 20:42:41,932 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-02 20:42:41,932 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-02 20:42:42,013 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-02 20:42:42,013 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-12-02 20:42:42,014 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:42:42 BoogieIcfgContainer [2018-12-02 20:42:42,014 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-02 20:42:42,014 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-02 20:42:42,014 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-02 20:42:42,016 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-02 20:42:42,016 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 08:42:41" (1/3) ... [2018-12-02 20:42:42,017 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@486c03b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 08:42:42, skipping insertion in model container [2018-12-02 20:42:42,017 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:42:41" (2/3) ... [2018-12-02 20:42:42,017 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@486c03b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 08:42:42, skipping insertion in model container [2018-12-02 20:42:42,017 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:42:42" (3/3) ... [2018-12-02 20:42:42,018 INFO L112 eAbstractionObserver]: Analyzing ICFG PodelskiRybalchenko-TACAS2011-Fig3_false-no-overflow.c [2018-12-02 20:42:42,024 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-02 20:42:42,029 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2018-12-02 20:42:42,038 INFO L257 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2018-12-02 20:42:42,060 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-02 20:42:42,060 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-02 20:42:42,060 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-02 20:42:42,060 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-02 20:42:42,060 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-02 20:42:42,060 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-02 20:42:42,060 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-02 20:42:42,061 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-02 20:42:42,072 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2018-12-02 20:42:42,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-12-02 20:42:42,076 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 20:42:42,076 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 20:42:42,078 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-02 20:42:42,081 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 20:42:42,081 INFO L82 PathProgramCache]: Analyzing trace with hash -623924281, now seen corresponding path program 1 times [2018-12-02 20:42:42,082 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 20:42:42,112 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 20:42:42,112 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 20:42:42,113 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 20:42:42,113 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 20:42:42,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 20:42:42,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 20:42:42,175 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 20:42:42,175 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-02 20:42:42,175 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-02 20:42:42,179 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-02 20:42:42,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-02 20:42:42,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-02 20:42:42,190 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 4 states. [2018-12-02 20:42:42,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 20:42:42,258 INFO L93 Difference]: Finished difference Result 52 states and 60 transitions. [2018-12-02 20:42:42,259 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-02 20:42:42,260 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-12-02 20:42:42,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 20:42:42,265 INFO L225 Difference]: With dead ends: 52 [2018-12-02 20:42:42,265 INFO L226 Difference]: Without dead ends: 32 [2018-12-02 20:42:42,267 INFO L631 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 [2018-12-02 20:42:42,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-12-02 20:42:42,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 23. [2018-12-02 20:42:42,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-12-02 20:42:42,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2018-12-02 20:42:42,289 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 8 [2018-12-02 20:42:42,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 20:42:42,290 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2018-12-02 20:42:42,290 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-02 20:42:42,290 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2018-12-02 20:42:42,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-12-02 20:42:42,290 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 20:42:42,290 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 20:42:42,291 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-02 20:42:42,291 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 20:42:42,291 INFO L82 PathProgramCache]: Analyzing trace with hash -623924089, now seen corresponding path program 1 times [2018-12-02 20:42:42,291 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 20:42:42,292 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 20:42:42,292 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 20:42:42,292 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 20:42:42,293 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 20:42:42,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 20:42:42,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 20:42:42,314 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 20:42:42,314 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-02 20:42:42,314 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-02 20:42:42,315 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-02 20:42:42,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-02 20:42:42,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-02 20:42:42,315 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand 4 states. [2018-12-02 20:42:42,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 20:42:42,334 INFO L93 Difference]: Finished difference Result 38 states and 42 transitions. [2018-12-02 20:42:42,335 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-02 20:42:42,335 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-12-02 20:42:42,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 20:42:42,335 INFO L225 Difference]: With dead ends: 38 [2018-12-02 20:42:42,335 INFO L226 Difference]: Without dead ends: 37 [2018-12-02 20:42:42,336 INFO L631 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 [2018-12-02 20:42:42,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-12-02 20:42:42,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 26. [2018-12-02 20:42:42,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-12-02 20:42:42,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2018-12-02 20:42:42,339 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 8 [2018-12-02 20:42:42,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 20:42:42,339 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2018-12-02 20:42:42,339 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-02 20:42:42,339 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2018-12-02 20:42:42,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-12-02 20:42:42,339 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 20:42:42,340 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 20:42:42,340 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-02 20:42:42,340 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 20:42:42,340 INFO L82 PathProgramCache]: Analyzing trace with hash 2133183819, now seen corresponding path program 1 times [2018-12-02 20:42:42,340 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 20:42:42,341 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 20:42:42,341 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 20:42:42,341 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 20:42:42,341 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 20:42:42,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 20:42:42,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 20:42:42,354 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 20:42:42,354 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-02 20:42:42,354 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-02 20:42:42,354 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-02 20:42:42,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-02 20:42:42,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-02 20:42:42,354 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 3 states. [2018-12-02 20:42:42,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 20:42:42,363 INFO L93 Difference]: Finished difference Result 26 states and 30 transitions. [2018-12-02 20:42:42,364 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-02 20:42:42,364 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2018-12-02 20:42:42,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 20:42:42,364 INFO L225 Difference]: With dead ends: 26 [2018-12-02 20:42:42,364 INFO L226 Difference]: Without dead ends: 24 [2018-12-02 20:42:42,365 INFO L631 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 [2018-12-02 20:42:42,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-12-02 20:42:42,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2018-12-02 20:42:42,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-12-02 20:42:42,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2018-12-02 20:42:42,367 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 9 [2018-12-02 20:42:42,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 20:42:42,367 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2018-12-02 20:42:42,367 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-02 20:42:42,367 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2018-12-02 20:42:42,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-12-02 20:42:42,368 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 20:42:42,368 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 20:42:42,368 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-02 20:42:42,368 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 20:42:42,368 INFO L82 PathProgramCache]: Analyzing trace with hash 2133189777, now seen corresponding path program 1 times [2018-12-02 20:42:42,368 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 20:42:42,369 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 20:42:42,369 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 20:42:42,369 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 20:42:42,369 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 20:42:42,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 20:42:42,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 20:42:42,381 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 20:42:42,381 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-02 20:42:42,381 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-02 20:42:42,382 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-02 20:42:42,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-02 20:42:42,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-02 20:42:42,382 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand 3 states. [2018-12-02 20:42:42,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 20:42:42,386 INFO L93 Difference]: Finished difference Result 24 states and 27 transitions. [2018-12-02 20:42:42,386 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-02 20:42:42,386 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2018-12-02 20:42:42,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 20:42:42,387 INFO L225 Difference]: With dead ends: 24 [2018-12-02 20:42:42,387 INFO L226 Difference]: Without dead ends: 23 [2018-12-02 20:42:42,387 INFO L631 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 [2018-12-02 20:42:42,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-12-02 20:42:42,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-12-02 20:42:42,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-12-02 20:42:42,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2018-12-02 20:42:42,390 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 9 [2018-12-02 20:42:42,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 20:42:42,390 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2018-12-02 20:42:42,390 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-02 20:42:42,390 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2018-12-02 20:42:42,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-12-02 20:42:42,390 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 20:42:42,390 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 20:42:42,390 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-02 20:42:42,391 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 20:42:42,391 INFO L82 PathProgramCache]: Analyzing trace with hash 1704373705, now seen corresponding path program 1 times [2018-12-02 20:42:42,391 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 20:42:42,391 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 20:42:42,392 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 20:42:42,392 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 20:42:42,392 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 20:42:42,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 20:42:42,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 20:42:42,413 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-02 20:42:42,426 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 08:42:42 BoogieIcfgContainer [2018-12-02 20:42:42,426 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-02 20:42:42,427 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-02 20:42:42,427 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-02 20:42:42,427 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-02 20:42:42,427 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:42:42" (3/4) ... [2018-12-02 20:42:42,429 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-12-02 20:42:42,456 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_05f8f52f-26b0-48e3-b458-def2d3c3c24a/bin-2019/utaipan/witness.graphml [2018-12-02 20:42:42,456 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-02 20:42:42,457 INFO L168 Benchmark]: Toolchain (without parser) took 733.67 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 83.9 MB). Free memory was 957.1 MB in the beginning and 1.0 GB in the end (delta: -56.8 MB). Peak memory consumption was 27.1 MB. Max. memory is 11.5 GB. [2018-12-02 20:42:42,458 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 976.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 20:42:42,458 INFO L168 Benchmark]: CACSL2BoogieTranslator took 124.33 ms. Allocated memory is still 1.0 GB. Free memory was 957.1 MB in the beginning and 946.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-02 20:42:42,459 INFO L168 Benchmark]: Boogie Procedure Inliner took 10.93 ms. Allocated memory is still 1.0 GB. Free memory is still 946.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 20:42:42,459 INFO L168 Benchmark]: Boogie Preprocessor took 10.74 ms. Allocated memory is still 1.0 GB. Free memory is still 946.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 20:42:42,459 INFO L168 Benchmark]: RCFGBuilder took 142.93 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 83.9 MB). Free memory was 946.3 MB in the beginning and 1.1 GB in the end (delta: -124.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 11.5 GB. [2018-12-02 20:42:42,460 INFO L168 Benchmark]: TraceAbstraction took 412.32 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 56.4 MB). Peak memory consumption was 56.4 MB. Max. memory is 11.5 GB. [2018-12-02 20:42:42,460 INFO L168 Benchmark]: Witness Printer took 29.61 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 20:42:42,462 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 976.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 124.33 ms. Allocated memory is still 1.0 GB. Free memory was 957.1 MB in the beginning and 946.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 10.93 ms. Allocated memory is still 1.0 GB. Free memory is still 946.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 10.74 ms. Allocated memory is still 1.0 GB. Free memory is still 946.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 142.93 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 83.9 MB). Free memory was 946.3 MB in the beginning and 1.1 GB in the end (delta: -124.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 412.32 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 56.4 MB). Peak memory consumption was 56.4 MB. Max. memory is 11.5 GB. * Witness Printer took 29.61 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 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, 24 locations, 6 error locations. UNSAFE Result, 0.3s OverallTime, 5 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 64 SDtfs, 69 SDslu, 74 SDs, 0 SdLazy, 45 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s 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=26occurred 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, 20 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 44 NumberOfCodeBlocks, 44 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 30 ConstructedInterpolants, 0 QuantifiedInterpolants, 406 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...