./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/NoriSharma-FSE2013-Fig7.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_115d87f5-adb1-4afb-b102-89a2e60c2ca7/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_115d87f5-adb1-4afb-b102-89a2e60c2ca7/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_115d87f5-adb1-4afb-b102-89a2e60c2ca7/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_115d87f5-adb1-4afb-b102-89a2e60c2ca7/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/NoriSharma-FSE2013-Fig7.c -s /tmp/vcloud-vcloud-master/worker/run_dir_115d87f5-adb1-4afb-b102-89a2e60c2ca7/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_115d87f5-adb1-4afb-b102-89a2e60c2ca7/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 7660a5e2f9f2a21129eb39e58701014cfc465dc2 ............................................................................................................................................................................................................................................... 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-a4ecdab [2020-11-22 12:48:39,014 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 12:48:39,016 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 12:48:39,071 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 12:48:39,087 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 12:48:39,089 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 12:48:39,091 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 12:48:39,094 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 12:48:39,096 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 12:48:39,098 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 12:48:39,099 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 12:48:39,101 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 12:48:39,111 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 12:48:39,115 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 12:48:39,117 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 12:48:39,119 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 12:48:39,120 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 12:48:39,127 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 12:48:39,132 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 12:48:39,140 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 12:48:39,145 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 12:48:39,148 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 12:48:39,149 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 12:48:39,151 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 12:48:39,158 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 12:48:39,158 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 12:48:39,159 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 12:48:39,161 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 12:48:39,162 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 12:48:39,163 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 12:48:39,164 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 12:48:39,165 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 12:48:39,167 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 12:48:39,169 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 12:48:39,170 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 12:48:39,171 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 12:48:39,172 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 12:48:39,172 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 12:48:39,173 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 12:48:39,174 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 12:48:39,175 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 12:48:39,178 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_115d87f5-adb1-4afb-b102-89a2e60c2ca7/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf [2020-11-22 12:48:39,233 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 12:48:39,237 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 12:48:39,239 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 12:48:39,239 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 12:48:39,240 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 12:48:39,240 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 12:48:39,240 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 12:48:39,241 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 12:48:39,241 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 12:48:39,241 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 12:48:39,243 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 12:48:39,243 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 12:48:39,243 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 12:48:39,244 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 12:48:39,244 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 12:48:39,246 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 12:48:39,246 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-22 12:48:39,246 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 12:48:39,247 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 12:48:39,247 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 12:48:39,247 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 12:48:39,247 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 12:48:39,248 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-11-22 12:48:39,248 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 12:48:39,248 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 12:48:39,249 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 12:48:39,249 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 12:48:39,249 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 12:48:39,250 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 12:48:39,250 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 12:48:39,250 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 12:48:39,251 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 12:48:39,251 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 12:48:39,251 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 12:48:39,252 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 12:48:39,252 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 12:48:39,252 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 12:48:39,253 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 12:48:39,253 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_115d87f5-adb1-4afb-b102-89a2e60c2ca7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_115d87f5-adb1-4afb-b102-89a2e60c2ca7/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7660a5e2f9f2a21129eb39e58701014cfc465dc2 [2020-11-22 12:48:39,559 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 12:48:39,602 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 12:48:39,607 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 12:48:39,609 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 12:48:39,610 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 12:48:39,611 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_115d87f5-adb1-4afb-b102-89a2e60c2ca7/bin/utaipan/../../sv-benchmarks/c/termination-crafted-lit/NoriSharma-FSE2013-Fig7.c [2020-11-22 12:48:39,706 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_115d87f5-adb1-4afb-b102-89a2e60c2ca7/bin/utaipan/data/26d61da59/6c609557141e4dbbb848a5f8fe7f66ad/FLAG2e24284cd [2020-11-22 12:48:40,264 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 12:48:40,264 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_115d87f5-adb1-4afb-b102-89a2e60c2ca7/sv-benchmarks/c/termination-crafted-lit/NoriSharma-FSE2013-Fig7.c [2020-11-22 12:48:40,270 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_115d87f5-adb1-4afb-b102-89a2e60c2ca7/bin/utaipan/data/26d61da59/6c609557141e4dbbb848a5f8fe7f66ad/FLAG2e24284cd [2020-11-22 12:48:40,640 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_115d87f5-adb1-4afb-b102-89a2e60c2ca7/bin/utaipan/data/26d61da59/6c609557141e4dbbb848a5f8fe7f66ad [2020-11-22 12:48:40,645 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 12:48:40,647 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 12:48:40,649 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 12:48:40,649 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 12:48:40,653 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 12:48:40,654 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:48:40" (1/1) ... [2020-11-22 12:48:40,656 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@320de46b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:48:40, skipping insertion in model container [2020-11-22 12:48:40,657 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:48:40" (1/1) ... [2020-11-22 12:48:40,665 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 12:48:40,678 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 12:48:40,859 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:48:40,873 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 12:48:40,904 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:48:40,918 INFO L208 MainTranslator]: Completed translation [2020-11-22 12:48:40,919 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:48:40 WrapperNode [2020-11-22 12:48:40,919 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 12:48:40,920 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 12:48:40,921 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 12:48:40,921 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 12:48:40,930 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:48:40" (1/1) ... [2020-11-22 12:48:40,936 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:48:40" (1/1) ... [2020-11-22 12:48:40,955 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 12:48:40,956 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 12:48:40,956 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 12:48:40,957 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 12:48:40,966 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:48:40" (1/1) ... [2020-11-22 12:48:40,966 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:48:40" (1/1) ... [2020-11-22 12:48:40,967 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:48:40" (1/1) ... [2020-11-22 12:48:40,968 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:48:40" (1/1) ... [2020-11-22 12:48:40,970 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:48:40" (1/1) ... [2020-11-22 12:48:40,974 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:48:40" (1/1) ... [2020-11-22 12:48:40,976 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:48:40" (1/1) ... [2020-11-22 12:48:40,977 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 12:48:40,978 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 12:48:40,978 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 12:48:40,979 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 12:48:40,980 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:48:40" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_115d87f5-adb1-4afb-b102-89a2e60c2ca7/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 [2020-11-22 12:48:41,075 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 12:48:41,076 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 12:48:41,355 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 12:48:41,355 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-11-22 12:48:41,358 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:48:41 BoogieIcfgContainer [2020-11-22 12:48:41,358 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 12:48:41,360 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 12:48:41,360 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 12:48:41,381 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 12:48:41,382 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 12:48:40" (1/3) ... [2020-11-22 12:48:41,383 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@167adb05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:48:41, skipping insertion in model container [2020-11-22 12:48:41,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:48:40" (2/3) ... [2020-11-22 12:48:41,384 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@167adb05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:48:41, skipping insertion in model container [2020-11-22 12:48:41,384 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:48:41" (3/3) ... [2020-11-22 12:48:41,385 INFO L111 eAbstractionObserver]: Analyzing ICFG NoriSharma-FSE2013-Fig7.c [2020-11-22 12:48:41,401 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 12:48:41,406 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-11-22 12:48:41,425 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-11-22 12:48:41,471 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 12:48:41,471 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 12:48:41,472 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 12:48:41,472 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 12:48:41,472 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 12:48:41,472 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 12:48:41,473 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 12:48:41,473 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 12:48:41,490 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2020-11-22 12:48:41,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-11-22 12:48:41,495 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:48:41,495 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-11-22 12:48:41,496 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-22 12:48:41,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:48:41,502 INFO L82 PathProgramCache]: Analyzing trace with hash 31073, now seen corresponding path program 1 times [2020-11-22 12:48:41,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:48:41,514 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794940621] [2020-11-22 12:48:41,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:48:41,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 12:48:41,622 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 12:48:41,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 12:48:41,639 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 12:48:41,657 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-22 12:48:41,658 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-22 12:48:41,658 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-22 12:48:41,676 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 12:48:41 BoogieIcfgContainer [2020-11-22 12:48:41,676 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 12:48:41,677 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 12:48:41,677 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 12:48:41,677 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 12:48:41,678 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:48:41" (3/4) ... [2020-11-22 12:48:41,680 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-22 12:48:41,720 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_115d87f5-adb1-4afb-b102-89a2e60c2ca7/bin/utaipan/witness.graphml [2020-11-22 12:48:41,721 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 12:48:41,723 INFO L168 Benchmark]: Toolchain (without parser) took 1075.11 ms. Allocated memory is still 90.2 MB. Free memory was 60.5 MB in the beginning and 43.2 MB in the end (delta: 17.3 MB). Peak memory consumption was 15.9 MB. Max. memory is 16.1 GB. [2020-11-22 12:48:41,724 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 90.2 MB. Free memory was 49.0 MB in the beginning and 48.9 MB in the end (delta: 63.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:48:41,725 INFO L168 Benchmark]: CACSL2BoogieTranslator took 270.76 ms. Allocated memory is still 90.2 MB. Free memory was 60.5 MB in the beginning and 69.9 MB in the end (delta: -9.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-22 12:48:41,726 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.06 ms. Allocated memory is still 90.2 MB. Free memory was 69.9 MB in the beginning and 68.4 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:48:41,726 INFO L168 Benchmark]: Boogie Preprocessor took 21.16 ms. Allocated memory is still 90.2 MB. Free memory was 68.4 MB in the beginning and 67.6 MB in the end (delta: 868.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:48:41,727 INFO L168 Benchmark]: RCFGBuilder took 379.95 ms. Allocated memory is still 90.2 MB. Free memory was 67.6 MB in the beginning and 56.3 MB in the end (delta: 11.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-22 12:48:41,728 INFO L168 Benchmark]: TraceAbstraction took 316.42 ms. Allocated memory is still 90.2 MB. Free memory was 55.8 MB in the beginning and 44.9 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-22 12:48:41,729 INFO L168 Benchmark]: Witness Printer took 43.87 ms. Allocated memory is still 90.2 MB. Free memory was 44.9 MB in the beginning and 43.2 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 12:48:41,734 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 90.2 MB. Free memory was 49.0 MB in the beginning and 48.9 MB in the end (delta: 63.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 270.76 ms. Allocated memory is still 90.2 MB. Free memory was 60.5 MB in the beginning and 69.9 MB in the end (delta: -9.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 35.06 ms. Allocated memory is still 90.2 MB. Free memory was 69.9 MB in the beginning and 68.4 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 21.16 ms. Allocated memory is still 90.2 MB. Free memory was 68.4 MB in the beginning and 67.6 MB in the end (delta: 868.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 379.95 ms. Allocated memory is still 90.2 MB. Free memory was 67.6 MB in the beginning and 56.3 MB in the end (delta: 11.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 316.42 ms. Allocated memory is still 90.2 MB. Free memory was 55.8 MB in the beginning and 44.9 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Witness Printer took 43.87 ms. Allocated memory is still 90.2 MB. Free memory was 44.9 MB in the beginning and 43.2 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 24]: integer overflow possible integer overflow possible We found a FailurePath: [L15] int a, b, c, i, j, M, N; [L16] i = __VERIFIER_nondet_int() [L17] j = __VERIFIER_nondet_int() [L18] M = __VERIFIER_nondet_int() [L19] N = __VERIFIER_nondet_int() [L20] a = i [L21] b = j [L22] c = 0 [L23] COND TRUE i