./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex2.12.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version f470102c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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-Ex2.12.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 f299f7e43971e739d4799ece224b61839f7f06e4 ......................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW) --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-11-28 20:24:07,122 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 20:24:07,124 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 20:24:07,143 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 20:24:07,144 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 20:24:07,146 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 20:24:07,148 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 20:24:07,157 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 20:24:07,162 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 20:24:07,166 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 20:24:07,167 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 20:24:07,170 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 20:24:07,170 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 20:24:07,173 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 20:24:07,174 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 20:24:07,175 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 20:24:07,177 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 20:24:07,178 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 20:24:07,181 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 20:24:07,185 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 20:24:07,190 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 20:24:07,195 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 20:24:07,196 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 20:24:07,198 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 20:24:07,202 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 20:24:07,202 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 20:24:07,202 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 20:24:07,204 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 20:24:07,205 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 20:24:07,206 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 20:24:07,206 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 20:24:07,207 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 20:24:07,208 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 20:24:07,209 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 20:24:07,210 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 20:24:07,210 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 20:24:07,211 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 20:24:07,212 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 20:24:07,212 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 20:24:07,213 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 20:24:07,214 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 20:24:07,215 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2019-11-28 20:24:07,248 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 20:24:07,249 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 20:24:07,250 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 20:24:07,250 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 20:24:07,251 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 20:24:07,251 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 20:24:07,251 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-28 20:24:07,251 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 20:24:07,251 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 20:24:07,252 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 20:24:07,252 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 20:24:07,252 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 20:24:07,252 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-11-28 20:24:07,253 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 20:24:07,253 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 20:24:07,253 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 20:24:07,253 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 20:24:07,253 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 20:24:07,254 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 20:24:07,254 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 20:24:07,254 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 20:24:07,254 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 20:24:07,255 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 20:24:07,255 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 20:24:07,255 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 20:24:07,255 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 20:24:07,255 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 20:24:07,256 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 20:24:07,256 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 -> f299f7e43971e739d4799ece224b61839f7f06e4 [2019-11-28 20:24:07,610 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 20:24:07,628 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 20:24:07,631 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 20:24:07,633 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 20:24:07,633 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 20:24:07,636 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex2.12.c [2019-11-28 20:24:07,710 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d84a539b/55a1ac2f4d03498f83594617d31f4f87/FLAG210664623 [2019-11-28 20:24:08,188 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 20:24:08,189 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex2.12.c [2019-11-28 20:24:08,194 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d84a539b/55a1ac2f4d03498f83594617d31f4f87/FLAG210664623 [2019-11-28 20:24:08,612 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d84a539b/55a1ac2f4d03498f83594617d31f4f87 [2019-11-28 20:24:08,615 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 20:24:08,617 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 20:24:08,618 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 20:24:08,618 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 20:24:08,622 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 20:24:08,623 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:24:08" (1/1) ... [2019-11-28 20:24:08,626 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@195f55ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:08, skipping insertion in model container [2019-11-28 20:24:08,626 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:24:08" (1/1) ... [2019-11-28 20:24:08,635 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 20:24:08,652 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 20:24:08,859 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 20:24:08,863 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 20:24:08,880 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 20:24:08,896 INFO L208 MainTranslator]: Completed translation [2019-11-28 20:24:08,896 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:08 WrapperNode [2019-11-28 20:24:08,897 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 20:24:08,897 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 20:24:08,897 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 20:24:08,898 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 20:24:08,906 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:08" (1/1) ... [2019-11-28 20:24:08,910 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:08" (1/1) ... [2019-11-28 20:24:08,989 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 20:24:08,991 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 20:24:08,992 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 20:24:08,992 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 20:24:09,001 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:08" (1/1) ... [2019-11-28 20:24:09,002 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:08" (1/1) ... [2019-11-28 20:24:09,003 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:08" (1/1) ... [2019-11-28 20:24:09,004 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:08" (1/1) ... [2019-11-28 20:24:09,006 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:08" (1/1) ... [2019-11-28 20:24:09,012 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:08" (1/1) ... [2019-11-28 20:24:09,013 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:08" (1/1) ... [2019-11-28 20:24:09,014 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 20:24:09,015 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 20:24:09,015 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 20:24:09,015 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 20:24:09,016 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:08" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2019-11-28 20:24:09,065 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 20:24:09,066 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 20:24:09,228 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 20:24:09,228 INFO L287 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-28 20:24:09,230 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:24:09 BoogieIcfgContainer [2019-11-28 20:24:09,230 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 20:24:09,231 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 20:24:09,231 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 20:24:09,234 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 20:24:09,234 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 08:24:08" (1/3) ... [2019-11-28 20:24:09,235 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51bedd3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 08:24:09, skipping insertion in model container [2019-11-28 20:24:09,235 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:08" (2/3) ... [2019-11-28 20:24:09,236 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51bedd3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 08:24:09, skipping insertion in model container [2019-11-28 20:24:09,236 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:24:09" (3/3) ... [2019-11-28 20:24:09,237 INFO L109 eAbstractionObserver]: Analyzing ICFG ChenFlurMukhopadhyay-SAS2012-Ex2.12.c [2019-11-28 20:24:09,245 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 20:24:09,250 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-11-28 20:24:09,261 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-11-28 20:24:09,287 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 20:24:09,288 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 20:24:09,288 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 20:24:09,288 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 20:24:09,288 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 20:24:09,289 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 20:24:09,289 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 20:24:09,289 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 20:24:09,305 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2019-11-28 20:24:09,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-11-28 20:24:09,312 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:24:09,313 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-11-28 20:24:09,313 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 20:24:09,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:24:09,319 INFO L82 PathProgramCache]: Analyzing trace with hash 31073, now seen corresponding path program 1 times [2019-11-28 20:24:09,326 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:24:09,326 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822422967] [2019-11-28 20:24:09,327 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:24:09,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:24:09,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:24:09,441 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:24:09,442 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-28 20:24:09,459 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 08:24:09 BoogieIcfgContainer [2019-11-28 20:24:09,460 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 20:24:09,460 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 20:24:09,460 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 20:24:09,461 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 20:24:09,461 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:24:09" (3/4) ... [2019-11-28 20:24:09,464 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-28 20:24:09,507 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 20:24:09,507 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 20:24:09,510 INFO L168 Benchmark]: Toolchain (without parser) took 892.54 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 69.2 MB). Free memory was 961.7 MB in the beginning and 1.0 GB in the end (delta: -68.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 11.5 GB. [2019-11-28 20:24:09,510 INFO L168 Benchmark]: CDTParser took 0.44 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 20:24:09,511 INFO L168 Benchmark]: CACSL2BoogieTranslator took 279.32 ms. Allocated memory is still 1.0 GB. Free memory was 961.7 MB in the beginning and 951.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-28 20:24:09,512 INFO L168 Benchmark]: Boogie Procedure Inliner took 93.37 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 69.2 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -114.2 MB). Peak memory consumption was 9.5 MB. Max. memory is 11.5 GB. [2019-11-28 20:24:09,513 INFO L168 Benchmark]: Boogie Preprocessor took 22.74 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 20:24:09,514 INFO L168 Benchmark]: RCFGBuilder took 215.62 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 21.4 MB). Peak memory consumption was 21.4 MB. Max. memory is 11.5 GB. [2019-11-28 20:24:09,514 INFO L168 Benchmark]: TraceAbstraction took 228.66 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 11.5 GB. [2019-11-28 20:24:09,515 INFO L168 Benchmark]: Witness Printer took 47.29 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 20:24:09,519 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.44 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 279.32 ms. Allocated memory is still 1.0 GB. Free memory was 961.7 MB in the beginning and 951.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 93.37 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 69.2 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -114.2 MB). Peak memory consumption was 9.5 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 22.74 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 215.62 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 21.4 MB). Peak memory consumption was 21.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 228.66 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 11.5 GB. * Witness Printer took 47.29 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 28]: integer overflow possible integer overflow possible We found a FailurePath: [L23] int x, y, oldx; [L24] x = __VERIFIER_nondet_int() [L25] y = __VERIFIER_nondet_int() [L26] COND TRUE x < 5 [L27] oldx = x [L28] oldx - y - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 4 error locations. Result: UNSAFE, OverallTime: 0.1s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 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, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...