./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex1.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/LeeJonesBen-Amram-POPL2001-Ex1.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 d3ded6f4470c26b608997f650ebe66ef1cf6f845 ......................................................................................................................................................................................................................................................................................................... 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 20:24:32,878 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 20:24:32,881 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 20:24:32,899 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 20:24:32,900 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 20:24:32,902 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 20:24:32,904 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 20:24:32,910 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 20:24:32,914 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 20:24:32,915 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 20:24:32,916 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 20:24:32,918 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 20:24:32,918 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 20:24:32,919 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 20:24:32,920 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 20:24:32,921 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 20:24:32,922 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 20:24:32,923 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 20:24:32,925 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 20:24:32,927 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 20:24:32,928 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 20:24:32,929 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 20:24:32,930 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 20:24:32,931 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 20:24:32,934 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 20:24:32,934 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 20:24:32,934 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 20:24:32,935 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 20:24:32,936 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 20:24:32,937 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 20:24:32,937 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 20:24:32,938 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 20:24:32,939 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 20:24:32,939 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 20:24:32,941 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 20:24:32,941 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 20:24:32,942 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 20:24:32,942 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 20:24:32,942 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 20:24:32,943 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 20:24:32,944 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 20:24:32,945 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2019-11-28 20:24:32,967 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 20:24:32,968 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 20:24:32,970 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 20:24:32,971 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 20:24:32,971 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 20:24:32,972 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 20:24:32,972 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-28 20:24:32,972 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 20:24:32,972 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 20:24:32,973 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 20:24:32,974 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 20:24:32,974 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 20:24:32,975 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-11-28 20:24:32,975 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 20:24:32,975 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 20:24:32,976 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 20:24:32,976 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 20:24:32,976 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 20:24:32,977 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 20:24:32,977 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 20:24:32,978 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 20:24:32,978 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 20:24:32,978 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 20:24:32,978 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 20:24:32,979 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 20:24:32,979 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 20:24:32,979 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 20:24:32,980 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 20:24:32,980 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 -> d3ded6f4470c26b608997f650ebe66ef1cf6f845 [2019-11-28 20:24:33,315 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 20:24:33,333 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 20:24:33,336 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 20:24:33,338 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 20:24:33,338 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 20:24:33,339 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex1.c [2019-11-28 20:24:33,410 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/414810673/81e1a760a073446b97664c548940bb49/FLAG0b792319e [2019-11-28 20:24:33,842 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 20:24:33,843 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex1.c [2019-11-28 20:24:33,851 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/414810673/81e1a760a073446b97664c548940bb49/FLAG0b792319e [2019-11-28 20:24:34,214 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/414810673/81e1a760a073446b97664c548940bb49 [2019-11-28 20:24:34,218 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 20:24:34,219 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 20:24:34,220 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 20:24:34,221 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 20:24:34,224 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 20:24:34,225 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:24:34" (1/1) ... [2019-11-28 20:24:34,228 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10883c84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:34, skipping insertion in model container [2019-11-28 20:24:34,228 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:24:34" (1/1) ... [2019-11-28 20:24:34,235 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 20:24:34,255 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 20:24:34,454 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 20:24:34,460 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 20:24:34,480 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 20:24:34,495 INFO L208 MainTranslator]: Completed translation [2019-11-28 20:24:34,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:34 WrapperNode [2019-11-28 20:24:34,497 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 20:24:34,497 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 20:24:34,498 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 20:24:34,498 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 20:24:34,506 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:34" (1/1) ... [2019-11-28 20:24:34,511 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:34" (1/1) ... [2019-11-28 20:24:34,586 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 20:24:34,587 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 20:24:34,587 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 20:24:34,587 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 20:24:34,597 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:34" (1/1) ... [2019-11-28 20:24:34,597 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:34" (1/1) ... [2019-11-28 20:24:34,598 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:34" (1/1) ... [2019-11-28 20:24:34,598 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:34" (1/1) ... [2019-11-28 20:24:34,600 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:34" (1/1) ... [2019-11-28 20:24:34,602 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:34" (1/1) ... [2019-11-28 20:24:34,602 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:34" (1/1) ... [2019-11-28 20:24:34,604 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 20:24:34,604 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 20:24:34,604 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 20:24:34,604 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 20:24:34,605 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:34" (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 20:24:34,664 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 20:24:34,664 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 20:24:34,664 INFO L130 BoogieDeclarations]: Found specification of procedure r1 [2019-11-28 20:24:34,664 INFO L138 BoogieDeclarations]: Found implementation of procedure r1 [2019-11-28 20:24:34,871 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 20:24:34,871 INFO L287 CfgBuilder]: Removed 6 assume(true) statements. [2019-11-28 20:24:34,873 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:24:34 BoogieIcfgContainer [2019-11-28 20:24:34,873 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 20:24:34,874 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 20:24:34,874 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 20:24:34,877 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 20:24:34,881 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 08:24:34" (1/3) ... [2019-11-28 20:24:34,882 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@360e1557 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 08:24:34, skipping insertion in model container [2019-11-28 20:24:34,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:34" (2/3) ... [2019-11-28 20:24:34,883 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@360e1557 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 08:24:34, skipping insertion in model container [2019-11-28 20:24:34,883 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:24:34" (3/3) ... [2019-11-28 20:24:34,887 INFO L109 eAbstractionObserver]: Analyzing ICFG LeeJonesBen-Amram-POPL2001-Ex1.c [2019-11-28 20:24:34,909 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 20:24:34,917 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2019-11-28 20:24:34,962 INFO L249 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-11-28 20:24:35,010 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 20:24:35,010 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 20:24:35,018 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 20:24:35,019 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 20:24:35,020 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 20:24:35,021 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 20:24:35,021 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 20:24:35,021 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 20:24:35,039 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2019-11-28 20:24:35,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-28 20:24:35,044 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:24:35,045 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-28 20:24:35,045 INFO L410 AbstractCegarLoop]: === Iteration 1 === [r1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, r1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, r1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, r1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, r1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, r1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 20:24:35,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:24:35,050 INFO L82 PathProgramCache]: Analyzing trace with hash 920915409, now seen corresponding path program 1 times [2019-11-28 20:24:35,058 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:24:35,058 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787129726] [2019-11-28 20:24:35,058 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:24:35,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:24:35,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:24:35,243 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787129726] [2019-11-28 20:24:35,244 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:24:35,244 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-28 20:24:35,246 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685397697] [2019-11-28 20:24:35,251 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-28 20:24:35,251 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:24:35,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-28 20:24:35,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-28 20:24:35,264 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 6 states. [2019-11-28 20:24:35,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:24:35,438 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2019-11-28 20:24:35,439 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-28 20:24:35,440 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 6 [2019-11-28 20:24:35,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:24:35,450 INFO L225 Difference]: With dead ends: 31 [2019-11-28 20:24:35,450 INFO L226 Difference]: Without dead ends: 17 [2019-11-28 20:24:35,454 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-11-28 20:24:35,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-11-28 20:24:35,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2019-11-28 20:24:35,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-11-28 20:24:35,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2019-11-28 20:24:35,495 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 6 [2019-11-28 20:24:35,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:24:35,496 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2019-11-28 20:24:35,496 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-28 20:24:35,497 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2019-11-28 20:24:35,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-28 20:24:35,497 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:24:35,498 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:24:35,498 INFO L410 AbstractCegarLoop]: === Iteration 2 === [r1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, r1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, r1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, r1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, r1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, r1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 20:24:35,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:24:35,499 INFO L82 PathProgramCache]: Analyzing trace with hash -1516393339, now seen corresponding path program 1 times [2019-11-28 20:24:35,500 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:24:35,500 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268770185] [2019-11-28 20:24:35,500 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:24:35,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:24:35,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:24:35,545 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268770185] [2019-11-28 20:24:35,545 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:24:35,545 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-28 20:24:35,546 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702288610] [2019-11-28 20:24:35,547 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-28 20:24:35,548 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:24:35,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 20:24:35,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-28 20:24:35,549 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 5 states. [2019-11-28 20:24:35,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:24:35,637 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2019-11-28 20:24:35,638 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-28 20:24:35,639 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2019-11-28 20:24:35,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:24:35,640 INFO L225 Difference]: With dead ends: 31 [2019-11-28 20:24:35,640 INFO L226 Difference]: Without dead ends: 29 [2019-11-28 20:24:35,641 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-28 20:24:35,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-11-28 20:24:35,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 23. [2019-11-28 20:24:35,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-11-28 20:24:35,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2019-11-28 20:24:35,649 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 7 [2019-11-28 20:24:35,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:24:35,650 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2019-11-28 20:24:35,650 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-28 20:24:35,650 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2019-11-28 20:24:35,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-28 20:24:35,651 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:24:35,651 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:24:35,651 INFO L410 AbstractCegarLoop]: === Iteration 3 === [r1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, r1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, r1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, r1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, r1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, r1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 20:24:35,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:24:35,652 INFO L82 PathProgramCache]: Analyzing trace with hash 236446803, now seen corresponding path program 1 times [2019-11-28 20:24:35,652 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:24:35,653 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542256859] [2019-11-28 20:24:35,653 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:24:35,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:24:35,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:24:35,693 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:24:35,693 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-28 20:24:35,720 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 08:24:35 BoogieIcfgContainer [2019-11-28 20:24:35,721 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 20:24:35,721 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 20:24:35,721 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 20:24:35,722 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 20:24:35,722 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:24:34" (3/4) ... [2019-11-28 20:24:35,725 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-28 20:24:35,769 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 20:24:35,770 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 20:24:35,773 INFO L168 Benchmark]: Toolchain (without parser) took 1552.58 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 122.2 MB). Free memory was 955.0 MB in the beginning and 1.0 GB in the end (delta: -91.0 MB). Peak memory consumption was 31.2 MB. Max. memory is 11.5 GB. [2019-11-28 20:24:35,774 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 20:24:35,775 INFO L168 Benchmark]: CACSL2BoogieTranslator took 276.63 ms. Allocated memory is still 1.0 GB. Free memory was 955.0 MB in the beginning and 944.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-28 20:24:35,776 INFO L168 Benchmark]: Boogie Procedure Inliner took 89.18 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 122.2 MB). Free memory was 944.2 MB in the beginning and 1.1 GB in the end (delta: -174.4 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. [2019-11-28 20:24:35,777 INFO L168 Benchmark]: Boogie Preprocessor took 16.99 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2019-11-28 20:24:35,778 INFO L168 Benchmark]: RCFGBuilder took 268.67 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 12.8 MB). Peak memory consumption was 12.8 MB. Max. memory is 11.5 GB. [2019-11-28 20:24:35,779 INFO L168 Benchmark]: TraceAbstraction took 846.86 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 46.6 MB). Peak memory consumption was 46.6 MB. Max. memory is 11.5 GB. [2019-11-28 20:24:35,780 INFO L168 Benchmark]: Witness Printer took 48.96 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2019-11-28 20:24:35,785 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 276.63 ms. Allocated memory is still 1.0 GB. Free memory was 955.0 MB in the beginning and 944.2 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 89.18 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 122.2 MB). Free memory was 944.2 MB in the beginning and 1.1 GB in the end (delta: -174.4 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 16.99 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 268.67 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 12.8 MB). Peak memory consumption was 12.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 846.86 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 46.6 MB). Peak memory consumption was 46.6 MB. Max. memory is 11.5 GB. * Witness Printer took 48.96 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 17]: integer overflow possible integer overflow possible We found a FailurePath: [L26] int ls = __VERIFIER_nondet_int(); [L27] COND TRUE ls >= 0 [L22] CALL r1(ls,0) VAL [\old(a)=0, \old(ls)=2147483647] [L14] COND FALSE !(ls == 0) VAL [\old(a)=0, \old(ls)=2147483647, a=0, ls=2147483647] [L17] ls-1 VAL [\old(a)=0, \old(ls)=2147483647, a=0, ls=2147483647] [L17] ls+1 VAL [\old(a)=0, \old(ls)=2147483647, a=0, ls=2147483647] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 27 locations, 6 error locations. Result: UNSAFE, OverallTime: 0.6s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 19 SDtfs, 61 SDslu, 50 SDs, 0 SdLazy, 96 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred 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: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 6 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 11 ConstructedInterpolants, 0 QuantifiedInterpolants, 171 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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...