./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted-lit/LeikeHeizmann-WST2014-Ex6.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 35987657 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/termination-crafted-lit/LeikeHeizmann-WST2014-Ex6.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 f60779531d4ef4e8b10b9b9577dc8311e00cfe5c74bee43d157f8b3f754e1462 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-22 00:36:25,098 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 00:36:25,100 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 00:36:25,131 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 00:36:25,131 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 00:36:25,132 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 00:36:25,135 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 00:36:25,138 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 00:36:25,139 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 00:36:25,142 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 00:36:25,143 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 00:36:25,147 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 00:36:25,147 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 00:36:25,148 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 00:36:25,149 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 00:36:25,151 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 00:36:25,152 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 00:36:25,153 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 00:36:25,154 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 00:36:25,158 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 00:36:25,159 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 00:36:25,160 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 00:36:25,162 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 00:36:25,162 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 00:36:25,163 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 00:36:25,168 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 00:36:25,169 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 00:36:25,169 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 00:36:25,169 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 00:36:25,170 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 00:36:25,170 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 00:36:25,171 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 00:36:25,172 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 00:36:25,172 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 00:36:25,173 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 00:36:25,174 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 00:36:25,174 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 00:36:25,174 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 00:36:25,175 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 00:36:25,175 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 00:36:25,175 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 00:36:25,176 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 00:36:25,180 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2022-07-22 00:36:25,206 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 00:36:25,207 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 00:36:25,207 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 00:36:25,207 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 00:36:25,208 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 00:36:25,208 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 00:36:25,208 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 00:36:25,208 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 00:36:25,208 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 00:36:25,209 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 00:36:25,209 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-22 00:36:25,209 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 00:36:25,210 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 00:36:25,210 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 00:36:25,210 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 00:36:25,217 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 00:36:25,217 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-07-22 00:36:25,217 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 00:36:25,218 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 00:36:25,218 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 00:36:25,218 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 00:36:25,218 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 00:36:25,218 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 00:36:25,218 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 00:36:25,219 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 00:36:25,219 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 00:36:25,219 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 00:36:25,219 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 00:36:25,219 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 00:36:25,219 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 00:36:25,220 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f60779531d4ef4e8b10b9b9577dc8311e00cfe5c74bee43d157f8b3f754e1462 [2022-07-22 00:36:25,488 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 00:36:25,500 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 00:36:25,502 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 00:36:25,503 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 00:36:25,516 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 00:36:25,518 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/LeikeHeizmann-WST2014-Ex6.c [2022-07-22 00:36:25,562 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c62120d3c/0cb0ca8810b8416da94835ad4a6ccb35/FLAG934d6ee11 [2022-07-22 00:36:25,859 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 00:36:25,860 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/LeikeHeizmann-WST2014-Ex6.c [2022-07-22 00:36:25,863 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c62120d3c/0cb0ca8810b8416da94835ad4a6ccb35/FLAG934d6ee11 [2022-07-22 00:36:25,874 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c62120d3c/0cb0ca8810b8416da94835ad4a6ccb35 [2022-07-22 00:36:25,876 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 00:36:25,877 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 00:36:25,879 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 00:36:25,880 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 00:36:25,882 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 00:36:25,882 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 12:36:25" (1/1) ... [2022-07-22 00:36:25,883 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a39459 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:36:25, skipping insertion in model container [2022-07-22 00:36:25,883 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 12:36:25" (1/1) ... [2022-07-22 00:36:25,888 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 00:36:25,896 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 00:36:26,004 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 00:36:26,007 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 00:36:26,017 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 00:36:26,066 INFO L208 MainTranslator]: Completed translation [2022-07-22 00:36:26,066 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:36:26 WrapperNode [2022-07-22 00:36:26,066 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 00:36:26,067 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 00:36:26,067 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 00:36:26,068 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 00:36:26,073 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:36:26" (1/1) ... [2022-07-22 00:36:26,076 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:36:26" (1/1) ... [2022-07-22 00:36:26,086 INFO L137 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 22 [2022-07-22 00:36:26,086 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 00:36:26,087 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 00:36:26,087 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 00:36:26,087 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 00:36:26,091 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:36:26" (1/1) ... [2022-07-22 00:36:26,091 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:36:26" (1/1) ... [2022-07-22 00:36:26,092 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:36:26" (1/1) ... [2022-07-22 00:36:26,092 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:36:26" (1/1) ... [2022-07-22 00:36:26,094 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:36:26" (1/1) ... [2022-07-22 00:36:26,097 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:36:26" (1/1) ... [2022-07-22 00:36:26,097 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:36:26" (1/1) ... [2022-07-22 00:36:26,098 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 00:36:26,099 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 00:36:26,099 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 00:36:26,099 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 00:36:26,099 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:36:26" (1/1) ... [2022-07-22 00:36:26,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 00:36:26,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 00:36:26,126 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-22 00:36:26,134 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-22 00:36:26,153 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 00:36:26,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 00:36:26,192 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 00:36:26,193 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 00:36:26,273 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 00:36:26,277 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 00:36:26,278 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-22 00:36:26,279 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 12:36:26 BoogieIcfgContainer [2022-07-22 00:36:26,279 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 00:36:26,281 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 00:36:26,281 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 00:36:26,283 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 00:36:26,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 12:36:25" (1/3) ... [2022-07-22 00:36:26,283 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b9b3c71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 12:36:26, skipping insertion in model container [2022-07-22 00:36:26,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:36:26" (2/3) ... [2022-07-22 00:36:26,284 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b9b3c71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 12:36:26, skipping insertion in model container [2022-07-22 00:36:26,284 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 12:36:26" (3/3) ... [2022-07-22 00:36:26,285 INFO L111 eAbstractionObserver]: Analyzing ICFG LeikeHeizmann-WST2014-Ex6.c [2022-07-22 00:36:26,295 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 00:36:26,295 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-07-22 00:36:26,331 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 00:36:26,338 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@541391f, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4fed5fc6 [2022-07-22 00:36:26,338 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-07-22 00:36:26,341 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 10 states have (on average 1.6) internal successors, (16), 14 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 00:36:26,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-07-22 00:36:26,345 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 00:36:26,345 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-07-22 00:36:26,346 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-07-22 00:36:26,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 00:36:26,356 INFO L85 PathProgramCache]: Analyzing trace with hash 925796, now seen corresponding path program 1 times [2022-07-22 00:36:26,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 00:36:26,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296582850] [2022-07-22 00:36:26,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 00:36:26,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 00:36:26,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 00:36:26,418 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 00:36:26,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 00:36:26,435 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-22 00:36:26,436 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-22 00:36:26,437 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 4 remaining) [2022-07-22 00:36:26,438 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 4 remaining) [2022-07-22 00:36:26,439 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 4 remaining) [2022-07-22 00:36:26,439 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 4 remaining) [2022-07-22 00:36:26,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 00:36:26,443 INFO L356 BasicCegarLoop]: Path program histogram: [1] [2022-07-22 00:36:26,446 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-22 00:36:26,456 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.07 12:36:26 BoogieIcfgContainer [2022-07-22 00:36:26,457 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-22 00:36:26,458 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-22 00:36:26,458 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-22 00:36:26,459 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-22 00:36:26,459 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 12:36:26" (3/4) ... [2022-07-22 00:36:26,460 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-07-22 00:36:26,482 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-22 00:36:26,482 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-22 00:36:26,483 INFO L158 Benchmark]: Toolchain (without parser) took 605.31ms. Allocated memory was 58.7MB in the beginning and 83.9MB in the end (delta: 25.2MB). Free memory was 37.6MB in the beginning and 58.6MB in the end (delta: -21.0MB). Peak memory consumption was 4.4MB. Max. memory is 16.1GB. [2022-07-22 00:36:26,483 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 58.7MB. Free memory was 40.6MB in the beginning and 40.6MB in the end (delta: 43.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 00:36:26,484 INFO L158 Benchmark]: CACSL2BoogieTranslator took 187.27ms. Allocated memory is still 58.7MB. Free memory was 37.4MB in the beginning and 42.9MB in the end (delta: -5.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-07-22 00:36:26,484 INFO L158 Benchmark]: Boogie Procedure Inliner took 18.78ms. Allocated memory is still 58.7MB. Free memory was 42.9MB in the beginning and 41.6MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 00:36:26,484 INFO L158 Benchmark]: Boogie Preprocessor took 11.60ms. Allocated memory is still 58.7MB. Free memory was 41.6MB in the beginning and 40.6MB in the end (delta: 995.1kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-22 00:36:26,485 INFO L158 Benchmark]: RCFGBuilder took 180.95ms. Allocated memory is still 58.7MB. Free memory was 40.6MB in the beginning and 32.4MB in the end (delta: 8.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-22 00:36:26,485 INFO L158 Benchmark]: TraceAbstraction took 176.21ms. Allocated memory was 58.7MB in the beginning and 83.9MB in the end (delta: 25.2MB). Free memory was 31.9MB in the beginning and 60.0MB in the end (delta: -28.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 00:36:26,485 INFO L158 Benchmark]: Witness Printer took 24.06ms. Allocated memory is still 83.9MB. Free memory was 60.0MB in the beginning and 58.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-22 00:36:26,487 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 58.7MB. Free memory was 40.6MB in the beginning and 40.6MB in the end (delta: 43.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 187.27ms. Allocated memory is still 58.7MB. Free memory was 37.4MB in the beginning and 42.9MB in the end (delta: -5.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 18.78ms. Allocated memory is still 58.7MB. Free memory was 42.9MB in the beginning and 41.6MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 11.60ms. Allocated memory is still 58.7MB. Free memory was 41.6MB in the beginning and 40.6MB in the end (delta: 995.1kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 180.95ms. Allocated memory is still 58.7MB. Free memory was 40.6MB in the beginning and 32.4MB in the end (delta: 8.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 176.21ms. Allocated memory was 58.7MB in the beginning and 83.9MB in the end (delta: 25.2MB). Free memory was 31.9MB in the beginning and 60.0MB in the end (delta: -28.1MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 24.06ms. Allocated memory is still 83.9MB. Free memory was 60.0MB in the beginning and 58.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 18]: integer overflow possible integer overflow possible We found a FailurePath: [L14] int a, b; [L15] a = __VERIFIER_nondet_int() [L16] b = __VERIFIER_nondet_int() [L17] COND TRUE a >= 1 && b >= 1 VAL [a=1073741824, b=1] [L18] 2*a VAL [a=1073741824, b=1] - UnprovableResult [Line: 18]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 0.1s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=0, InterpolantAutomatonStates: 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, 4 NumberOfCodeBlocks, 4 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! [2022-07-22 00:36:26,535 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW)