./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 574ddb4e 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/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 b7646a22882710466ec3244f9455a19a1dbe784d959581f36adf578939304de7 --- Real Ultimate output --- This is Ultimate 0.2.2-?-574ddb4 [2023-02-17 09:24:27,394 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-17 09:24:27,396 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-17 09:24:27,433 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-17 09:24:27,433 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-17 09:24:27,434 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-17 09:24:27,436 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-17 09:24:27,437 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-17 09:24:27,438 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-17 09:24:27,439 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-17 09:24:27,439 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-17 09:24:27,440 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-17 09:24:27,440 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-17 09:24:27,441 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-17 09:24:27,442 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-17 09:24:27,442 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-17 09:24:27,443 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-17 09:24:27,443 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-17 09:24:27,445 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-17 09:24:27,446 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-17 09:24:27,447 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-17 09:24:27,455 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-17 09:24:27,457 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-17 09:24:27,458 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-17 09:24:27,461 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-17 09:24:27,462 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-17 09:24:27,462 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-17 09:24:27,462 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-17 09:24:27,462 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-17 09:24:27,463 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-17 09:24:27,463 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-17 09:24:27,464 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-17 09:24:27,464 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-17 09:24:27,465 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-17 09:24:27,465 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-17 09:24:27,465 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-17 09:24:27,466 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-17 09:24:27,466 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-17 09:24:27,466 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-17 09:24:27,467 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-17 09:24:27,467 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-17 09:24:27,470 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2023-02-17 09:24:27,505 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-17 09:24:27,505 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-17 09:24:27,505 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-17 09:24:27,505 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-17 09:24:27,506 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-17 09:24:27,506 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-17 09:24:27,507 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-17 09:24:27,507 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-17 09:24:27,507 INFO L138 SettingsManager]: * Use SBE=true [2023-02-17 09:24:27,507 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-17 09:24:27,507 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-17 09:24:27,508 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-17 09:24:27,508 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-17 09:24:27,508 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-17 09:24:27,508 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-17 09:24:27,508 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-17 09:24:27,508 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-02-17 09:24:27,508 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-17 09:24:27,508 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-17 09:24:27,508 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-17 09:24:27,508 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-17 09:24:27,509 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-17 09:24:27,509 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-17 09:24:27,509 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 09:24:27,509 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-17 09:24:27,509 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-17 09:24:27,509 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-17 09:24:27,509 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-17 09:24:27,510 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-17 09:24:27,510 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-17 09:24:27,510 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-17 09:24:27,510 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-17 09:24:27,510 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-17 09:24:27,510 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-17 09:24:27,510 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b7646a22882710466ec3244f9455a19a1dbe784d959581f36adf578939304de7 [2023-02-17 09:24:27,718 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-17 09:24:27,736 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-17 09:24:27,738 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-17 09:24:27,739 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-17 09:24:27,739 INFO L275 PluginConnector]: CDTParser initialized [2023-02-17 09:24:27,740 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex1.c [2023-02-17 09:24:28,726 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-17 09:24:28,871 INFO L351 CDTParser]: Found 1 translation units. [2023-02-17 09:24:28,872 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex1.c [2023-02-17 09:24:28,875 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3991eee49/a2efb43e7fc14304b1fa77db9bce37f9/FLAG2c715b4ef [2023-02-17 09:24:28,893 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3991eee49/a2efb43e7fc14304b1fa77db9bce37f9 [2023-02-17 09:24:28,895 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-17 09:24:28,896 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-17 09:24:28,896 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-17 09:24:28,896 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-17 09:24:28,899 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-17 09:24:28,899 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 09:24:28" (1/1) ... [2023-02-17 09:24:28,900 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79a6fb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:24:28, skipping insertion in model container [2023-02-17 09:24:28,900 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 09:24:28" (1/1) ... [2023-02-17 09:24:28,904 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-17 09:24:28,915 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-17 09:24:29,015 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 09:24:29,019 INFO L203 MainTranslator]: Completed pre-run [2023-02-17 09:24:29,029 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 09:24:29,038 INFO L208 MainTranslator]: Completed translation [2023-02-17 09:24:29,038 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:24:29 WrapperNode [2023-02-17 09:24:29,039 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-17 09:24:29,040 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-17 09:24:29,040 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-17 09:24:29,041 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-17 09:24:29,047 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:24:29" (1/1) ... [2023-02-17 09:24:29,050 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:24:29" (1/1) ... [2023-02-17 09:24:29,061 INFO L138 Inliner]: procedures = 6, calls = 5, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 17 [2023-02-17 09:24:29,062 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-17 09:24:29,062 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-17 09:24:29,062 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-17 09:24:29,062 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-17 09:24:29,067 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:24:29" (1/1) ... [2023-02-17 09:24:29,068 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:24:29" (1/1) ... [2023-02-17 09:24:29,069 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:24:29" (1/1) ... [2023-02-17 09:24:29,069 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:24:29" (1/1) ... [2023-02-17 09:24:29,071 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:24:29" (1/1) ... [2023-02-17 09:24:29,072 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:24:29" (1/1) ... [2023-02-17 09:24:29,075 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:24:29" (1/1) ... [2023-02-17 09:24:29,076 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:24:29" (1/1) ... [2023-02-17 09:24:29,077 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-17 09:24:29,078 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-17 09:24:29,078 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-17 09:24:29,079 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-17 09:24:29,080 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:24:29" (1/1) ... [2023-02-17 09:24:29,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 09:24:29,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:24:29,108 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) [2023-02-17 09:24:29,113 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 [2023-02-17 09:24:29,144 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-17 09:24:29,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-17 09:24:29,145 INFO L130 BoogieDeclarations]: Found specification of procedure r1 [2023-02-17 09:24:29,145 INFO L138 BoogieDeclarations]: Found implementation of procedure r1 [2023-02-17 09:24:29,187 INFO L235 CfgBuilder]: Building ICFG [2023-02-17 09:24:29,190 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-17 09:24:29,302 INFO L276 CfgBuilder]: Performing block encoding [2023-02-17 09:24:29,307 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-17 09:24:29,307 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2023-02-17 09:24:29,309 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 09:24:29 BoogieIcfgContainer [2023-02-17 09:24:29,309 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-17 09:24:29,310 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-17 09:24:29,310 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-17 09:24:29,313 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-17 09:24:29,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.02 09:24:28" (1/3) ... [2023-02-17 09:24:29,313 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22b6cde8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 09:24:29, skipping insertion in model container [2023-02-17 09:24:29,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:24:29" (2/3) ... [2023-02-17 09:24:29,314 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22b6cde8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 09:24:29, skipping insertion in model container [2023-02-17 09:24:29,314 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 09:24:29" (3/3) ... [2023-02-17 09:24:29,315 INFO L112 eAbstractionObserver]: Analyzing ICFG LeeJonesBen-Amram-POPL2001-Ex1.c [2023-02-17 09:24:29,326 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-17 09:24:29,327 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-02-17 09:24:29,358 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-17 09:24:29,364 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@641ab89f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-17 09:24:29,364 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-02-17 09:24:29,367 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 24 states have internal predecessors, (26), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-17 09:24:29,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-02-17 09:24:29,374 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:24:29,374 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-02-17 09:24:29,375 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting r1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [r1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, r1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, r1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, r1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2023-02-17 09:24:29,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:24:29,379 INFO L85 PathProgramCache]: Analyzing trace with hash 1805805519, now seen corresponding path program 1 times [2023-02-17 09:24:29,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:24:29,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2294131] [2023-02-17 09:24:29,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:24:29,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:24:29,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:24:29,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:24:29,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:24:29,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2294131] [2023-02-17 09:24:29,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2294131] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 09:24:29,535 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 09:24:29,535 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-17 09:24:29,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067303837] [2023-02-17 09:24:29,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 09:24:29,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-17 09:24:29,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:24:29,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-17 09:24:29,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-17 09:24:29,572 INFO L87 Difference]: Start difference. First operand has 28 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 24 states have internal predecessors, (26), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 5 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 09:24:29,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 09:24:29,683 INFO L93 Difference]: Finished difference Result 52 states and 55 transitions. [2023-02-17 09:24:29,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-17 09:24:29,685 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-02-17 09:24:29,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 09:24:29,689 INFO L225 Difference]: With dead ends: 52 [2023-02-17 09:24:29,689 INFO L226 Difference]: Without dead ends: 32 [2023-02-17 09:24:29,691 INFO L412 NwaCegarLoop]: 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 [2023-02-17 09:24:29,694 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 34 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 09:24:29,694 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 70 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 09:24:29,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2023-02-17 09:24:29,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 24. [2023-02-17 09:24:29,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 16 states have (on average 1.4375) internal successors, (23), 21 states have internal predecessors, (23), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 09:24:29,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2023-02-17 09:24:29,717 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 7 [2023-02-17 09:24:29,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 09:24:29,717 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2023-02-17 09:24:29,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 09:24:29,717 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2023-02-17 09:24:29,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-02-17 09:24:29,718 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:24:29,718 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 09:24:29,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-17 09:24:29,718 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting r1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [r1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, r1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, r1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, r1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2023-02-17 09:24:29,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:24:29,719 INFO L85 PathProgramCache]: Analyzing trace with hash 145396296, now seen corresponding path program 1 times [2023-02-17 09:24:29,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:24:29,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435682503] [2023-02-17 09:24:29,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:24:29,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:24:29,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:24:29,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:24:29,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:24:29,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435682503] [2023-02-17 09:24:29,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435682503] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 09:24:29,771 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 09:24:29,771 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-17 09:24:29,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437649606] [2023-02-17 09:24:29,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 09:24:29,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-17 09:24:29,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:24:29,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-17 09:24:29,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-02-17 09:24:29,776 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand has 6 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 09:24:29,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 09:24:29,826 INFO L93 Difference]: Finished difference Result 24 states and 25 transitions. [2023-02-17 09:24:29,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-17 09:24:29,826 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-02-17 09:24:29,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 09:24:29,828 INFO L225 Difference]: With dead ends: 24 [2023-02-17 09:24:29,828 INFO L226 Difference]: Without dead ends: 23 [2023-02-17 09:24:29,831 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-02-17 09:24:29,834 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 24 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 09:24:29,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 11 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 09:24:29,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-02-17 09:24:29,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2023-02-17 09:24:29,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 16 states have (on average 1.3125) internal successors, (21), 20 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 09:24:29,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2023-02-17 09:24:29,844 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 8 [2023-02-17 09:24:29,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 09:24:29,845 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2023-02-17 09:24:29,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 09:24:29,846 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2023-02-17 09:24:29,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-02-17 09:24:29,846 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:24:29,847 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 09:24:29,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-17 09:24:29,849 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting r1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [r1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, r1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, r1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, r1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2023-02-17 09:24:29,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:24:29,852 INFO L85 PathProgramCache]: Analyzing trace with hash -2008078486, now seen corresponding path program 1 times [2023-02-17 09:24:29,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:24:29,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619690475] [2023-02-17 09:24:29,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:24:29,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:24:29,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 09:24:29,863 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-17 09:24:29,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 09:24:29,891 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-17 09:24:29,892 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-02-17 09:24:29,893 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location r1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 6 remaining) [2023-02-17 09:24:29,894 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location r1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 6 remaining) [2023-02-17 09:24:29,895 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location r1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 6 remaining) [2023-02-17 09:24:29,895 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location r1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 6 remaining) [2023-02-17 09:24:29,895 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location r1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 6 remaining) [2023-02-17 09:24:29,895 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location r1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 6 remaining) [2023-02-17 09:24:29,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-02-17 09:24:29,898 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-02-17 09:24:29,903 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-17 09:24:29,926 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.02 09:24:29 BoogieIcfgContainer [2023-02-17 09:24:29,928 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-17 09:24:29,928 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-17 09:24:29,929 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-17 09:24:29,929 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-17 09:24:29,929 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 09:24:29" (3/4) ... [2023-02-17 09:24:29,931 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-02-17 09:24:29,958 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-02-17 09:24:29,958 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-17 09:24:29,958 INFO L158 Benchmark]: Toolchain (without parser) took 1062.85ms. Allocated memory is still 134.2MB. Free memory was 98.4MB in the beginning and 87.8MB in the end (delta: 10.7MB). Peak memory consumption was 12.7MB. Max. memory is 16.1GB. [2023-02-17 09:24:29,959 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 109.1MB. Free memory was 83.2MB in the beginning and 83.1MB in the end (delta: 134.2kB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-17 09:24:29,959 INFO L158 Benchmark]: CACSL2BoogieTranslator took 143.21ms. Allocated memory is still 134.2MB. Free memory was 98.4MB in the beginning and 89.2MB in the end (delta: 9.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-17 09:24:29,959 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.56ms. Allocated memory is still 134.2MB. Free memory was 89.2MB in the beginning and 88.1MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-17 09:24:29,959 INFO L158 Benchmark]: Boogie Preprocessor took 15.06ms. Allocated memory is still 134.2MB. Free memory was 88.1MB in the beginning and 87.0MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-17 09:24:29,960 INFO L158 Benchmark]: RCFGBuilder took 230.94ms. Allocated memory is still 134.2MB. Free memory was 87.0MB in the beginning and 78.0MB in the end (delta: 9.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-02-17 09:24:29,960 INFO L158 Benchmark]: TraceAbstraction took 617.63ms. Allocated memory is still 134.2MB. Free memory was 77.0MB in the beginning and 89.1MB in the end (delta: -12.1MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-17 09:24:29,960 INFO L158 Benchmark]: Witness Printer took 29.52ms. Allocated memory is still 134.2MB. Free memory was 89.1MB in the beginning and 87.8MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-17 09:24:29,963 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 109.1MB. Free memory was 83.2MB in the beginning and 83.1MB in the end (delta: 134.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 143.21ms. Allocated memory is still 134.2MB. Free memory was 98.4MB in the beginning and 89.2MB in the end (delta: 9.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 21.56ms. Allocated memory is still 134.2MB. Free memory was 89.2MB in the beginning and 88.1MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 15.06ms. Allocated memory is still 134.2MB. Free memory was 88.1MB in the beginning and 87.0MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 230.94ms. Allocated memory is still 134.2MB. Free memory was 87.0MB in the beginning and 78.0MB in the end (delta: 9.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 617.63ms. Allocated memory is still 134.2MB. Free memory was 77.0MB in the beginning and 89.1MB in the end (delta: -12.1MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 29.52ms. Allocated memory is still 134.2MB. Free memory was 89.1MB in the beginning and 87.8MB in the end (delta: 1.4MB). There was no memory consumed. 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: 17]: integer overflow possible integer overflow possible We found a FailurePath: [L26] int ls = __VERIFIER_nondet_int(); [L27] COND TRUE ls >= 0 [L28] CALL rev(ls) [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] - UnprovableResult [Line: 17]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 17]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 17]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 17]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 17]: 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 2 procedures, 28 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 59 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 58 mSDsluCounter, 81 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 59 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 101 IncrementalHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 22 mSDtfsCounter, 101 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=0, InterpolantAutomatonStates: 12, 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, 8 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 25 NumberOfCodeBlocks, 25 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 13 ConstructedInterpolants, 0 QuantifiedInterpolants, 33 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, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-02-17 09:24:29,976 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)