./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/signedintegeroverflow-regression/PrefixIncrement.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_bd1783e7-f7f8-4faf-a11e-89a0cc1eea4c/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_bd1783e7-f7f8-4faf-a11e-89a0cc1eea4c/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_bd1783e7-f7f8-4faf-a11e-89a0cc1eea4c/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_bd1783e7-f7f8-4faf-a11e-89a0cc1eea4c/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/signedintegeroverflow-regression/PrefixIncrement.i -s /tmp/vcloud-vcloud-master/worker/run_dir_bd1783e7-f7f8-4faf-a11e-89a0cc1eea4c/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_bd1783e7-f7f8-4faf-a11e-89a0cc1eea4c/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 458defa6989fd07c9ad90ba734f631bc16cdc88e ........................................................................................................................................................................................................................................ 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 0.2.0-7b2dab5 [2020-12-03 12:30:27,854 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-03 12:30:27,857 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-03 12:30:27,912 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-03 12:30:27,930 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-03 12:30:27,931 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-03 12:30:27,933 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-03 12:30:27,936 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-03 12:30:27,939 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-03 12:30:27,940 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-03 12:30:27,941 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-03 12:30:27,943 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-03 12:30:27,943 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-03 12:30:27,945 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-03 12:30:27,946 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-03 12:30:27,948 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-03 12:30:27,949 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-03 12:30:27,950 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-03 12:30:27,953 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-03 12:30:27,955 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-03 12:30:27,957 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-03 12:30:27,959 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-03 12:30:27,961 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-03 12:30:27,962 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-03 12:30:27,966 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-03 12:30:27,966 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-03 12:30:27,967 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-03 12:30:27,968 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-03 12:30:27,969 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-03 12:30:27,970 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-03 12:30:27,971 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-03 12:30:27,972 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-03 12:30:27,973 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-03 12:30:27,974 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-03 12:30:27,975 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-03 12:30:27,976 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-03 12:30:27,977 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-03 12:30:27,977 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-03 12:30:27,978 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-03 12:30:27,979 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-03 12:30:27,980 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-03 12:30:27,981 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_bd1783e7-f7f8-4faf-a11e-89a0cc1eea4c/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf [2020-12-03 12:30:28,006 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-03 12:30:28,006 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-03 12:30:28,007 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-03 12:30:28,008 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-03 12:30:28,008 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-03 12:30:28,009 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-03 12:30:28,009 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-03 12:30:28,010 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-03 12:30:28,010 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-03 12:30:28,010 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-03 12:30:28,011 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-03 12:30:28,011 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-03 12:30:28,012 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-03 12:30:28,012 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-03 12:30:28,013 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-03 12:30:28,014 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-03 12:30:28,014 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-03 12:30:28,015 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-03 12:30:28,015 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-03 12:30:28,015 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-03 12:30:28,016 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-03 12:30:28,016 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-03 12:30:28,016 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-12-03 12:30:28,016 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-03 12:30:28,017 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-03 12:30:28,017 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-03 12:30:28,017 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-03 12:30:28,018 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-03 12:30:28,018 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-03 12:30:28,018 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-03 12:30:28,019 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-03 12:30:28,019 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-03 12:30:28,019 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-03 12:30:28,019 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-03 12:30:28,020 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-03 12:30:28,020 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-03 12:30:28,020 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-03 12:30:28,021 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_bd1783e7-f7f8-4faf-a11e-89a0cc1eea4c/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_bd1783e7-f7f8-4faf-a11e-89a0cc1eea4c/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 458defa6989fd07c9ad90ba734f631bc16cdc88e [2020-12-03 12:30:28,278 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-03 12:30:28,312 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-03 12:30:28,315 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-03 12:30:28,317 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-03 12:30:28,318 INFO L275 PluginConnector]: CDTParser initialized [2020-12-03 12:30:28,319 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_bd1783e7-f7f8-4faf-a11e-89a0cc1eea4c/bin/utaipan/../../sv-benchmarks/c/signedintegeroverflow-regression/PrefixIncrement.i [2020-12-03 12:30:28,398 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_bd1783e7-f7f8-4faf-a11e-89a0cc1eea4c/bin/utaipan/data/c2b7f3444/28184c8167eb4aa8b6c1e1bf1faff152/FLAG68450cb18 [2020-12-03 12:30:28,886 INFO L306 CDTParser]: Found 1 translation units. [2020-12-03 12:30:28,886 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_bd1783e7-f7f8-4faf-a11e-89a0cc1eea4c/sv-benchmarks/c/signedintegeroverflow-regression/PrefixIncrement.i [2020-12-03 12:30:28,904 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_bd1783e7-f7f8-4faf-a11e-89a0cc1eea4c/bin/utaipan/data/c2b7f3444/28184c8167eb4aa8b6c1e1bf1faff152/FLAG68450cb18 [2020-12-03 12:30:29,414 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_bd1783e7-f7f8-4faf-a11e-89a0cc1eea4c/bin/utaipan/data/c2b7f3444/28184c8167eb4aa8b6c1e1bf1faff152 [2020-12-03 12:30:29,417 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-03 12:30:29,419 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-03 12:30:29,421 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-03 12:30:29,421 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-03 12:30:29,425 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-03 12:30:29,425 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 12:30:29" (1/1) ... [2020-12-03 12:30:29,428 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b06b6ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:30:29, skipping insertion in model container [2020-12-03 12:30:29,428 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 12:30:29" (1/1) ... [2020-12-03 12:30:29,435 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-03 12:30:29,463 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-03 12:30:29,824 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-03 12:30:29,839 INFO L203 MainTranslator]: Completed pre-run [2020-12-03 12:30:29,865 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-03 12:30:29,928 INFO L208 MainTranslator]: Completed translation [2020-12-03 12:30:29,928 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:30:29 WrapperNode [2020-12-03 12:30:29,928 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-03 12:30:29,930 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-03 12:30:29,930 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-03 12:30:29,930 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-03 12:30:29,939 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:30:29" (1/1) ... [2020-12-03 12:30:29,958 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:30:29" (1/1) ... [2020-12-03 12:30:29,976 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-03 12:30:29,977 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-03 12:30:29,977 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-03 12:30:29,977 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-03 12:30:29,985 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:30:29" (1/1) ... [2020-12-03 12:30:29,986 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:30:29" (1/1) ... [2020-12-03 12:30:29,988 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:30:29" (1/1) ... [2020-12-03 12:30:29,988 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:30:29" (1/1) ... [2020-12-03 12:30:29,991 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:30:29" (1/1) ... [2020-12-03 12:30:29,993 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:30:29" (1/1) ... [2020-12-03 12:30:29,994 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:30:29" (1/1) ... [2020-12-03 12:30:29,996 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-03 12:30:29,997 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-03 12:30:29,997 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-03 12:30:29,997 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-03 12:30:29,998 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:30:29" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bd1783e7-f7f8-4faf-a11e-89a0cc1eea4c/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-03 12:30:30,082 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-03 12:30:30,083 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-03 12:30:30,083 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-03 12:30:30,083 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-03 12:30:30,280 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-03 12:30:30,281 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-03 12:30:30,283 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 12:30:30 BoogieIcfgContainer [2020-12-03 12:30:30,283 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-03 12:30:30,285 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-03 12:30:30,285 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-03 12:30:30,288 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-03 12:30:30,296 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.12 12:30:29" (1/3) ... [2020-12-03 12:30:30,297 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34c25b09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 12:30:30, skipping insertion in model container [2020-12-03 12:30:30,297 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:30:29" (2/3) ... [2020-12-03 12:30:30,297 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34c25b09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 12:30:30, skipping insertion in model container [2020-12-03 12:30:30,298 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 12:30:30" (3/3) ... [2020-12-03 12:30:30,299 INFO L111 eAbstractionObserver]: Analyzing ICFG PrefixIncrement.i [2020-12-03 12:30:30,326 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-03 12:30:30,343 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-03 12:30:30,354 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-03 12:30:30,395 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-03 12:30:30,395 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-03 12:30:30,395 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-03 12:30:30,395 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-03 12:30:30,396 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-03 12:30:30,396 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-03 12:30:30,396 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-03 12:30:30,396 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-03 12:30:30,409 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2020-12-03 12:30:30,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2020-12-03 12:30:30,414 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:30:30,414 INFO L422 BasicCegarLoop]: trace histogram [1, 1] [2020-12-03 12:30:30,415 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-03 12:30:30,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:30:30,421 INFO L82 PathProgramCache]: Analyzing trace with hash 1274, now seen corresponding path program 1 times [2020-12-03 12:30:30,430 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:30:30,431 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248285544] [2020-12-03 12:30:30,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:30:30,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-03 12:30:30,532 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-03 12:30:30,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-03 12:30:30,547 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-03 12:30:30,566 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-12-03 12:30:30,566 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-03 12:30:30,567 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-03 12:30:30,585 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.12 12:30:30 BoogieIcfgContainer [2020-12-03 12:30:30,585 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-03 12:30:30,586 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-03 12:30:30,587 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-03 12:30:30,587 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-03 12:30:30,588 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 12:30:30" (3/4) ... [2020-12-03 12:30:30,590 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-03 12:30:30,621 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_bd1783e7-f7f8-4faf-a11e-89a0cc1eea4c/bin/utaipan/witness.graphml [2020-12-03 12:30:30,621 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-03 12:30:30,637 INFO L168 Benchmark]: Toolchain (without parser) took 1203.21 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 60.8 MB in the beginning and 82.7 MB in the end (delta: -21.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-03 12:30:30,638 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 96.5 MB. Free memory was 69.9 MB in the beginning and 69.8 MB in the end (delta: 25.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-03 12:30:30,638 INFO L168 Benchmark]: CACSL2BoogieTranslator took 508.03 ms. Allocated memory is still 96.5 MB. Free memory was 60.7 MB in the beginning and 64.4 MB in the end (delta: -3.7 MB). Peak memory consumption was 7.9 MB. Max. memory is 16.1 GB. [2020-12-03 12:30:30,639 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.47 ms. Allocated memory is still 96.5 MB. Free memory was 64.4 MB in the beginning and 62.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-03 12:30:30,640 INFO L168 Benchmark]: Boogie Preprocessor took 19.13 ms. Allocated memory is still 96.5 MB. Free memory was 62.9 MB in the beginning and 61.7 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-03 12:30:30,641 INFO L168 Benchmark]: RCFGBuilder took 286.42 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 61.7 MB in the beginning and 94.0 MB in the end (delta: -32.3 MB). Peak memory consumption was 16.3 MB. Max. memory is 16.1 GB. [2020-12-03 12:30:30,641 INFO L168 Benchmark]: TraceAbstraction took 300.99 ms. Allocated memory is still 117.4 MB. Free memory was 93.6 MB in the beginning and 84.2 MB in the end (delta: 9.4 MB). Peak memory consumption was 10.7 MB. Max. memory is 16.1 GB. [2020-12-03 12:30:30,642 INFO L168 Benchmark]: Witness Printer took 34.65 ms. Allocated memory is still 117.4 MB. Free memory was 84.2 MB in the beginning and 82.7 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-03 12:30:30,646 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 96.5 MB. Free memory was 69.9 MB in the beginning and 69.8 MB in the end (delta: 25.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 508.03 ms. Allocated memory is still 96.5 MB. Free memory was 60.7 MB in the beginning and 64.4 MB in the end (delta: -3.7 MB). Peak memory consumption was 7.9 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 46.47 ms. Allocated memory is still 96.5 MB. Free memory was 64.4 MB in the beginning and 62.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 19.13 ms. Allocated memory is still 96.5 MB. Free memory was 62.9 MB in the beginning and 61.7 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 286.42 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 61.7 MB in the beginning and 94.0 MB in the end (delta: -32.3 MB). Peak memory consumption was 16.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 300.99 ms. Allocated memory is still 117.4 MB. Free memory was 93.6 MB in the beginning and 84.2 MB in the end (delta: 9.4 MB). Peak memory consumption was 10.7 MB. Max. memory is 16.1 GB. * Witness Printer took 34.65 ms. Allocated memory is still 117.4 MB. Free memory was 84.2 MB in the beginning and 82.7 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 333]: integer overflow possible integer overflow possible We found a FailurePath: [L332] int x = 2147483647; [L333] ++x - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.1s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 2 NumberOfCodeBlocks, 2 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...