./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex2.04.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version ae007674 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/ChenFlurMukhopadhyay-SAS2012-Ex2.04.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 1d6f84a00d97be01ba51cf4b5694e1152ff8a68f2435fb069710979803a4de15 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 08:43:05,125 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 08:43:05,128 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 08:43:05,165 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 08:43:05,166 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 08:43:05,169 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 08:43:05,170 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 08:43:05,174 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 08:43:05,176 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 08:43:05,180 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 08:43:05,181 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 08:43:05,185 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 08:43:05,185 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 08:43:05,187 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 08:43:05,189 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 08:43:05,191 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 08:43:05,192 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 08:43:05,193 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 08:43:05,195 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 08:43:05,200 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 08:43:05,201 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 08:43:05,202 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 08:43:05,203 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 08:43:05,204 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 08:43:05,210 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 08:43:05,211 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 08:43:05,211 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 08:43:05,213 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 08:43:05,213 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 08:43:05,214 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 08:43:05,214 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 08:43:05,215 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 08:43:05,216 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 08:43:05,217 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 08:43:05,218 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 08:43:05,218 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 08:43:05,219 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 08:43:05,219 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 08:43:05,219 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 08:43:05,221 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 08:43:05,221 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 08:43:05,222 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2021-12-28 08:43:05,243 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 08:43:05,245 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 08:43:05,246 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 08:43:05,246 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 08:43:05,247 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 08:43:05,247 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 08:43:05,248 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 08:43:05,248 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 08:43:05,248 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 08:43:05,249 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 08:43:05,249 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-28 08:43:05,249 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 08:43:05,250 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 08:43:05,250 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-28 08:43:05,250 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 08:43:05,250 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-28 08:43:05,250 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-12-28 08:43:05,251 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 08:43:05,251 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 08:43:05,251 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-28 08:43:05,251 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 08:43:05,258 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 08:43:05,259 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 08:43:05,259 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 08:43:05,259 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 08:43:05,259 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 08:43:05,260 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-28 08:43:05,260 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 08:43:05,260 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-28 08:43:05,260 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-28 08:43:05,260 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1d6f84a00d97be01ba51cf4b5694e1152ff8a68f2435fb069710979803a4de15 [2021-12-28 08:43:05,558 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 08:43:05,582 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 08:43:05,585 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 08:43:05,587 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 08:43:05,587 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 08:43:05,588 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex2.04.c [2021-12-28 08:43:05,646 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36924b486/c087e08aa0e240a4b214e8667ac4b9c2/FLAG15af6e7e5 [2021-12-28 08:43:06,060 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 08:43:06,061 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex2.04.c [2021-12-28 08:43:06,066 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36924b486/c087e08aa0e240a4b214e8667ac4b9c2/FLAG15af6e7e5 [2021-12-28 08:43:06,082 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36924b486/c087e08aa0e240a4b214e8667ac4b9c2 [2021-12-28 08:43:06,084 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 08:43:06,086 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 08:43:06,089 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 08:43:06,089 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 08:43:06,092 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 08:43:06,092 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 08:43:06" (1/1) ... [2021-12-28 08:43:06,093 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e3db14f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 08:43:06, skipping insertion in model container [2021-12-28 08:43:06,094 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 08:43:06" (1/1) ... [2021-12-28 08:43:06,099 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 08:43:06,113 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 08:43:06,247 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 08:43:06,249 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 08:43:06,262 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 08:43:06,271 INFO L208 MainTranslator]: Completed translation [2021-12-28 08:43:06,272 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 08:43:06 WrapperNode [2021-12-28 08:43:06,272 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 08:43:06,273 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 08:43:06,273 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 08:43:06,274 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 08:43:06,280 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 08:43:06" (1/1) ... [2021-12-28 08:43:06,283 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 08:43:06" (1/1) ... [2021-12-28 08:43:06,296 INFO L137 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 22 [2021-12-28 08:43:06,296 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 08:43:06,297 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 08:43:06,297 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 08:43:06,297 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 08:43:06,304 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 08:43:06" (1/1) ... [2021-12-28 08:43:06,304 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 08:43:06" (1/1) ... [2021-12-28 08:43:06,305 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 08:43:06" (1/1) ... [2021-12-28 08:43:06,305 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 08:43:06" (1/1) ... [2021-12-28 08:43:06,307 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 08:43:06" (1/1) ... [2021-12-28 08:43:06,311 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 08:43:06" (1/1) ... [2021-12-28 08:43:06,312 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 08:43:06" (1/1) ... [2021-12-28 08:43:06,315 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 08:43:06,316 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 08:43:06,317 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 08:43:06,317 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 08:43:06,318 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 08:43:06" (1/1) ... [2021-12-28 08:43:06,323 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 08:43:06,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 08:43:06,344 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) [2021-12-28 08:43:06,374 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 [2021-12-28 08:43:06,389 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 08:43:06,389 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 08:43:06,455 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 08:43:06,457 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 08:43:06,554 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 08:43:06,561 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 08:43:06,561 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-28 08:43:06,563 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 08:43:06 BoogieIcfgContainer [2021-12-28 08:43:06,563 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 08:43:06,565 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 08:43:06,565 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 08:43:06,568 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 08:43:06,569 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 08:43:06" (1/3) ... [2021-12-28 08:43:06,569 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7962c521 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 08:43:06, skipping insertion in model container [2021-12-28 08:43:06,570 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 08:43:06" (2/3) ... [2021-12-28 08:43:06,570 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7962c521 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 08:43:06, skipping insertion in model container [2021-12-28 08:43:06,570 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 08:43:06" (3/3) ... [2021-12-28 08:43:06,571 INFO L111 eAbstractionObserver]: Analyzing ICFG ChenFlurMukhopadhyay-SAS2012-Ex2.04.c [2021-12-28 08:43:06,576 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 08:43:06,576 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-12-28 08:43:06,607 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 08:43:06,613 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-28 08:43:06,613 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-12-28 08:43:06,624 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) [2021-12-28 08:43:06,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-12-28 08:43:06,627 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 08:43:06,628 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-12-28 08:43:06,628 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-12-28 08:43:06,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 08:43:06,633 INFO L85 PathProgramCache]: Analyzing trace with hash 925796, now seen corresponding path program 1 times [2021-12-28 08:43:06,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 08:43:06,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104198237] [2021-12-28 08:43:06,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 08:43:06,641 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 08:43:06,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 08:43:06,712 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 08:43:06,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 08:43:06,729 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 08:43:06,731 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-28 08:43:06,732 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 4 remaining) [2021-12-28 08:43:06,734 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 4 remaining) [2021-12-28 08:43:06,735 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 4 remaining) [2021-12-28 08:43:06,735 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 4 remaining) [2021-12-28 08:43:06,736 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-28 08:43:06,740 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2021-12-28 08:43:06,743 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-28 08:43:06,757 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.12 08:43:06 BoogieIcfgContainer [2021-12-28 08:43:06,758 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-28 08:43:06,762 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-28 08:43:06,763 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-28 08:43:06,763 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-28 08:43:06,763 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 08:43:06" (3/4) ... [2021-12-28 08:43:06,765 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-12-28 08:43:06,797 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-28 08:43:06,797 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-28 08:43:06,798 INFO L158 Benchmark]: Toolchain (without parser) took 712.03ms. Allocated memory is still 62.9MB. Free memory was 43.3MB in the beginning and 26.8MB in the end (delta: 16.4MB). Peak memory consumption was 18.5MB. Max. memory is 16.1GB. [2021-12-28 08:43:06,799 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 62.9MB. Free memory was 44.4MB in the beginning and 44.4MB in the end (delta: 49.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-28 08:43:06,802 INFO L158 Benchmark]: CACSL2BoogieTranslator took 183.75ms. Allocated memory is still 62.9MB. Free memory was 43.0MB in the beginning and 34.4MB in the end (delta: 8.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-28 08:43:06,802 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.95ms. Allocated memory is still 62.9MB. Free memory was 34.4MB in the beginning and 33.0MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-28 08:43:06,805 INFO L158 Benchmark]: Boogie Preprocessor took 18.04ms. Allocated memory is still 62.9MB. Free memory was 33.0MB in the beginning and 32.1MB in the end (delta: 888.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-28 08:43:06,806 INFO L158 Benchmark]: RCFGBuilder took 246.71ms. Allocated memory is still 62.9MB. Free memory was 32.1MB in the beginning and 40.7MB in the end (delta: -8.6MB). Peak memory consumption was 8.1MB. Max. memory is 16.1GB. [2021-12-28 08:43:06,806 INFO L158 Benchmark]: TraceAbstraction took 193.17ms. Allocated memory is still 62.9MB. Free memory was 40.5MB in the beginning and 28.4MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-28 08:43:06,807 INFO L158 Benchmark]: Witness Printer took 34.96ms. Allocated memory is still 62.9MB. Free memory was 28.4MB in the beginning and 26.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-28 08:43:06,810 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 62.9MB. Free memory was 44.4MB in the beginning and 44.4MB in the end (delta: 49.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 183.75ms. Allocated memory is still 62.9MB. Free memory was 43.0MB in the beginning and 34.4MB in the end (delta: 8.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 22.95ms. Allocated memory is still 62.9MB. Free memory was 34.4MB in the beginning and 33.0MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 18.04ms. Allocated memory is still 62.9MB. Free memory was 33.0MB in the beginning and 32.1MB in the end (delta: 888.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 246.71ms. Allocated memory is still 62.9MB. Free memory was 32.1MB in the beginning and 40.7MB in the end (delta: -8.6MB). Peak memory consumption was 8.1MB. Max. memory is 16.1GB. * TraceAbstraction took 193.17ms. Allocated memory is still 62.9MB. Free memory was 40.5MB in the beginning and 28.4MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Witness Printer took 34.96ms. Allocated memory is still 62.9MB. Free memory was 28.4MB in the beginning and 26.8MB in the end (delta: 1.6MB). 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: 27]: integer overflow possible integer overflow possible We found a FailurePath: [L23] int x, y; [L24] x = __VERIFIER_nondet_int() [L25] y = __VERIFIER_nondet_int() [L26] COND TRUE x < y VAL [x=1, y=2147483647] [L27] x + y VAL [x=1, y=2147483647] - UnprovableResult [Line: 27]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 28]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 28]: 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, PartialOrderReductionTime: 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! [2021-12-28 08:43:06,838 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with 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)