./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-LICS2004-Fig2_false-no-overflow.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0cd3be1d Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_aebfa990-a319-41ab-bd9d-541a8cf7bc86/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_aebfa990-a319-41ab-bd9d-541a8cf7bc86/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_aebfa990-a319-41ab-bd9d-541a8cf7bc86/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_aebfa990-a319-41ab-bd9d-541a8cf7bc86/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-LICS2004-Fig2_false-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_aebfa990-a319-41ab-bd9d-541a8cf7bc86/bin-2019/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_aebfa990-a319-41ab-bd9d-541a8cf7bc86/bin-2019/uautomizer --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 Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 5155088d89d02424835a418b2f1dfc7cb44efefa ....................................................................................................................................................................................................................................................................................................................................................................................... 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 0.1.23-0cd3be1 [2018-11-28 13:27:46,912 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 13:27:46,913 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 13:27:46,920 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 13:27:46,920 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 13:27:46,921 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 13:27:46,922 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 13:27:46,923 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 13:27:46,925 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 13:27:46,925 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 13:27:46,926 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 13:27:46,926 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 13:27:46,927 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 13:27:46,928 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 13:27:46,929 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 13:27:46,930 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 13:27:46,930 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 13:27:46,932 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 13:27:46,933 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 13:27:46,935 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 13:27:46,936 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 13:27:46,937 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 13:27:46,939 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 13:27:46,939 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 13:27:46,939 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 13:27:46,940 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 13:27:46,941 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 13:27:46,941 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 13:27:46,942 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 13:27:46,943 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 13:27:46,943 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 13:27:46,944 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 13:27:46,944 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 13:27:46,944 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 13:27:46,945 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 13:27:46,945 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 13:27:46,947 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_aebfa990-a319-41ab-bd9d-541a8cf7bc86/bin-2019/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf [2018-11-28 13:27:46,958 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 13:27:46,959 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 13:27:46,959 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 13:27:46,959 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 13:27:46,960 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 13:27:46,960 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 13:27:46,960 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 13:27:46,961 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 13:27:46,961 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-28 13:27:46,961 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 13:27:46,961 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 13:27:46,962 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-28 13:27:46,962 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 13:27:46,962 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-28 13:27:46,963 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2018-11-28 13:27:46,963 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 13:27:46,963 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 13:27:46,963 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-28 13:27:46,963 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 13:27:46,963 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 13:27:46,964 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 13:27:46,964 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 13:27:46,964 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 13:27:46,964 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 13:27:46,964 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 13:27:46,964 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-28 13:27:46,965 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 13:27:46,965 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 13:27:46,965 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-28 13:27:46,965 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true 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_aebfa990-a319-41ab-bd9d-541a8cf7bc86/bin-2019/uautomizer 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 -> Automizer 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 -> 5155088d89d02424835a418b2f1dfc7cb44efefa [2018-11-28 13:27:46,994 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 13:27:47,004 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 13:27:47,007 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 13:27:47,008 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 13:27:47,008 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 13:27:47,009 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_aebfa990-a319-41ab-bd9d-541a8cf7bc86/bin-2019/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-LICS2004-Fig2_false-no-overflow.c [2018-11-28 13:27:47,059 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_aebfa990-a319-41ab-bd9d-541a8cf7bc86/bin-2019/uautomizer/data/b1dd3a925/64594c90373d4488ae58badcdc5164c0/FLAG7ee4f5eae [2018-11-28 13:27:47,381 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 13:27:47,382 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_aebfa990-a319-41ab-bd9d-541a8cf7bc86/sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-LICS2004-Fig2_false-no-overflow.c [2018-11-28 13:27:47,385 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_aebfa990-a319-41ab-bd9d-541a8cf7bc86/bin-2019/uautomizer/data/b1dd3a925/64594c90373d4488ae58badcdc5164c0/FLAG7ee4f5eae [2018-11-28 13:27:47,820 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_aebfa990-a319-41ab-bd9d-541a8cf7bc86/bin-2019/uautomizer/data/b1dd3a925/64594c90373d4488ae58badcdc5164c0 [2018-11-28 13:27:47,823 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 13:27:47,824 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 13:27:47,825 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 13:27:47,825 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 13:27:47,829 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 13:27:47,830 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 01:27:47" (1/1) ... [2018-11-28 13:27:47,833 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b4d235d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:27:47, skipping insertion in model container [2018-11-28 13:27:47,833 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 01:27:47" (1/1) ... [2018-11-28 13:27:47,840 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 13:27:47,853 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 13:27:47,964 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 13:27:47,967 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 13:27:47,978 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 13:27:47,988 INFO L195 MainTranslator]: Completed translation [2018-11-28 13:27:47,988 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:27:47 WrapperNode [2018-11-28 13:27:47,988 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 13:27:47,989 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 13:27:47,989 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 13:27:47,989 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 13:27:47,995 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:27:47" (1/1) ... [2018-11-28 13:27:47,998 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:27:47" (1/1) ... [2018-11-28 13:27:48,003 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 13:27:48,003 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 13:27:48,003 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 13:27:48,003 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 13:27:48,009 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:27:47" (1/1) ... [2018-11-28 13:27:48,010 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:27:47" (1/1) ... [2018-11-28 13:27:48,010 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:27:47" (1/1) ... [2018-11-28 13:27:48,010 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:27:47" (1/1) ... [2018-11-28 13:27:48,012 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:27:47" (1/1) ... [2018-11-28 13:27:48,015 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:27:47" (1/1) ... [2018-11-28 13:27:48,016 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:27:47" (1/1) ... [2018-11-28 13:27:48,017 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 13:27:48,017 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 13:27:48,017 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 13:27:48,017 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 13:27:48,018 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:27:47" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_aebfa990-a319-41ab-bd9d-541a8cf7bc86/bin-2019/uautomizer/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 [2018-11-28 13:27:48,112 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 13:27:48,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 13:27:48,113 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 13:27:48,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 13:27:48,113 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 13:27:48,113 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 13:27:48,227 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 13:27:48,227 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-11-28 13:27:48,227 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 01:27:48 BoogieIcfgContainer [2018-11-28 13:27:48,227 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 13:27:48,228 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 13:27:48,228 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 13:27:48,231 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 13:27:48,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 01:27:47" (1/3) ... [2018-11-28 13:27:48,232 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33b583c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 01:27:48, skipping insertion in model container [2018-11-28 13:27:48,232 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:27:47" (2/3) ... [2018-11-28 13:27:48,232 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33b583c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 01:27:48, skipping insertion in model container [2018-11-28 13:27:48,232 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 01:27:48" (3/3) ... [2018-11-28 13:27:48,234 INFO L112 eAbstractionObserver]: Analyzing ICFG PodelskiRybalchenko-LICS2004-Fig2_false-no-overflow.c [2018-11-28 13:27:48,243 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 13:27:48,249 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2018-11-28 13:27:48,265 INFO L257 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2018-11-28 13:27:48,291 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 13:27:48,292 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 13:27:48,292 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-28 13:27:48,292 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 13:27:48,292 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 13:27:48,292 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 13:27:48,292 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 13:27:48,292 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 13:27:48,292 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 13:27:48,304 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2018-11-28 13:27:48,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-11-28 13:27:48,308 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:27:48,309 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:27:48,310 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:27:48,314 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:27:48,314 INFO L82 PathProgramCache]: Analyzing trace with hash -623924281, now seen corresponding path program 1 times [2018-11-28 13:27:48,315 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:27:48,316 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:27:48,351 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:27:48,351 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:27:48,351 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:27:48,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:27:48,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:27:48,432 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 13:27:48,432 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-28 13:27:48,435 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 13:27:48,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 13:27:48,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 13:27:48,447 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 4 states. [2018-11-28 13:27:48,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:27:48,545 INFO L93 Difference]: Finished difference Result 52 states and 60 transitions. [2018-11-28 13:27:48,545 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-28 13:27:48,546 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-11-28 13:27:48,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:27:48,553 INFO L225 Difference]: With dead ends: 52 [2018-11-28 13:27:48,553 INFO L226 Difference]: Without dead ends: 32 [2018-11-28 13:27:48,556 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 [2018-11-28 13:27:48,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-11-28 13:27:48,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 23. [2018-11-28 13:27:48,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-11-28 13:27:48,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2018-11-28 13:27:48,583 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 8 [2018-11-28 13:27:48,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:27:48,583 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2018-11-28 13:27:48,583 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 13:27:48,583 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2018-11-28 13:27:48,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-11-28 13:27:48,584 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:27:48,584 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:27:48,584 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:27:48,585 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:27:48,585 INFO L82 PathProgramCache]: Analyzing trace with hash -623924089, now seen corresponding path program 1 times [2018-11-28 13:27:48,585 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:27:48,586 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:27:48,587 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:27:48,587 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:27:48,587 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:27:48,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:27:48,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:27:48,623 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 13:27:48,623 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-28 13:27:48,624 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 13:27:48,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 13:27:48,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 13:27:48,625 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand 4 states. [2018-11-28 13:27:48,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:27:48,670 INFO L93 Difference]: Finished difference Result 38 states and 42 transitions. [2018-11-28 13:27:48,670 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-28 13:27:48,671 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-11-28 13:27:48,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:27:48,671 INFO L225 Difference]: With dead ends: 38 [2018-11-28 13:27:48,671 INFO L226 Difference]: Without dead ends: 37 [2018-11-28 13:27:48,672 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 [2018-11-28 13:27:48,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-11-28 13:27:48,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 26. [2018-11-28 13:27:48,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-11-28 13:27:48,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2018-11-28 13:27:48,677 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 8 [2018-11-28 13:27:48,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:27:48,677 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2018-11-28 13:27:48,677 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 13:27:48,677 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2018-11-28 13:27:48,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-11-28 13:27:48,679 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:27:48,679 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:27:48,679 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:27:48,679 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:27:48,679 INFO L82 PathProgramCache]: Analyzing trace with hash 2133183819, now seen corresponding path program 1 times [2018-11-28 13:27:48,679 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:27:48,680 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:27:48,680 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:27:48,681 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:27:48,681 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:27:48,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:27:48,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:27:48,702 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 13:27:48,702 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 13:27:48,703 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-28 13:27:48,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-28 13:27:48,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 13:27:48,703 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 3 states. [2018-11-28 13:27:48,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:27:48,716 INFO L93 Difference]: Finished difference Result 26 states and 30 transitions. [2018-11-28 13:27:48,717 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 13:27:48,717 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2018-11-28 13:27:48,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:27:48,717 INFO L225 Difference]: With dead ends: 26 [2018-11-28 13:27:48,717 INFO L226 Difference]: Without dead ends: 24 [2018-11-28 13:27:48,718 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 [2018-11-28 13:27:48,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-11-28 13:27:48,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2018-11-28 13:27:48,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-11-28 13:27:48,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2018-11-28 13:27:48,721 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 9 [2018-11-28 13:27:48,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:27:48,721 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2018-11-28 13:27:48,721 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-28 13:27:48,721 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2018-11-28 13:27:48,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-11-28 13:27:48,723 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:27:48,723 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:27:48,723 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:27:48,723 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:27:48,723 INFO L82 PathProgramCache]: Analyzing trace with hash 2133189777, now seen corresponding path program 1 times [2018-11-28 13:27:48,723 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:27:48,724 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:27:48,724 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:27:48,724 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:27:48,724 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:27:48,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:27:48,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:27:48,750 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 13:27:48,750 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 13:27:48,751 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-28 13:27:48,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-28 13:27:48,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 13:27:48,751 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand 3 states. [2018-11-28 13:27:48,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:27:48,757 INFO L93 Difference]: Finished difference Result 24 states and 27 transitions. [2018-11-28 13:27:48,757 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 13:27:48,758 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2018-11-28 13:27:48,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:27:48,758 INFO L225 Difference]: With dead ends: 24 [2018-11-28 13:27:48,758 INFO L226 Difference]: Without dead ends: 23 [2018-11-28 13:27:48,758 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 [2018-11-28 13:27:48,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-11-28 13:27:48,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-11-28 13:27:48,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-11-28 13:27:48,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2018-11-28 13:27:48,761 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 9 [2018-11-28 13:27:48,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:27:48,761 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2018-11-28 13:27:48,761 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-28 13:27:48,761 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2018-11-28 13:27:48,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-28 13:27:48,762 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:27:48,762 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:27:48,762 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:27:48,762 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:27:48,762 INFO L82 PathProgramCache]: Analyzing trace with hash 1704373705, now seen corresponding path program 1 times [2018-11-28 13:27:48,762 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:27:48,762 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:27:48,763 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:27:48,763 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:27:48,763 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:27:48,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:27:48,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:27:48,786 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-11-28 13:27:48,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 01:27:48 BoogieIcfgContainer [2018-11-28 13:27:48,801 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 13:27:48,802 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 13:27:48,802 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 13:27:48,802 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 13:27:48,802 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 01:27:48" (3/4) ... [2018-11-28 13:27:48,804 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-28 13:27:48,832 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_aebfa990-a319-41ab-bd9d-541a8cf7bc86/bin-2019/uautomizer/witness.graphml [2018-11-28 13:27:48,832 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 13:27:48,833 INFO L168 Benchmark]: Toolchain (without parser) took 1009.48 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 121.1 MB). Free memory was 953.3 MB in the beginning and 1.1 GB in the end (delta: -108.6 MB). Peak memory consumption was 12.5 MB. Max. memory is 11.5 GB. [2018-11-28 13:27:48,834 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 985.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 13:27:48,834 INFO L168 Benchmark]: CACSL2BoogieTranslator took 163.57 ms. Allocated memory is still 1.0 GB. Free memory was 953.3 MB in the beginning and 942.3 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 11.5 GB. [2018-11-28 13:27:48,835 INFO L168 Benchmark]: Boogie Procedure Inliner took 14.35 ms. Allocated memory is still 1.0 GB. Free memory is still 942.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 13:27:48,835 INFO L168 Benchmark]: Boogie Preprocessor took 13.53 ms. Allocated memory is still 1.0 GB. Free memory is still 942.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 13:27:48,835 INFO L168 Benchmark]: RCFGBuilder took 210.39 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 121.1 MB). Free memory was 942.3 MB in the beginning and 1.1 GB in the end (delta: -165.3 MB). Peak memory consumption was 15.3 MB. Max. memory is 11.5 GB. [2018-11-28 13:27:48,836 INFO L168 Benchmark]: TraceAbstraction took 573.25 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 43.0 MB). Peak memory consumption was 43.0 MB. Max. memory is 11.5 GB. [2018-11-28 13:27:48,836 INFO L168 Benchmark]: Witness Printer took 30.50 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-28 13:27:48,839 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 985.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 163.57 ms. Allocated memory is still 1.0 GB. Free memory was 953.3 MB in the beginning and 942.3 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 14.35 ms. Allocated memory is still 1.0 GB. Free memory is still 942.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 13.53 ms. Allocated memory is still 1.0 GB. Free memory is still 942.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 210.39 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 121.1 MB). Free memory was 942.3 MB in the beginning and 1.1 GB in the end (delta: -165.3 MB). Peak memory consumption was 15.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 573.25 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 43.0 MB). Peak memory consumption was 43.0 MB. Max. memory is 11.5 GB. * Witness Printer took 30.50 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. 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, 0.5s 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, 0.1s 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, 0.1s 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...