./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9a8b2e8d 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_1.3.100.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-Ex2.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 f1df70d37f8afdd882c0c58eaed03ed11e314407 ................................................................................................................................................................................................................................................................................................................... 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 0.1.25-9a8b2e8 [2020-10-20 06:25:19,346 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 06:25:19,348 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 06:25:19,384 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 06:25:19,385 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 06:25:19,393 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 06:25:19,395 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 06:25:19,398 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 06:25:19,401 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 06:25:19,401 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 06:25:19,402 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 06:25:19,403 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 06:25:19,404 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 06:25:19,405 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 06:25:19,408 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 06:25:19,410 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 06:25:19,411 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 06:25:19,414 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 06:25:19,417 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 06:25:19,422 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 06:25:19,425 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 06:25:19,427 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 06:25:19,429 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 06:25:19,430 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 06:25:19,434 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 06:25:19,434 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 06:25:19,434 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 06:25:19,442 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 06:25:19,443 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 06:25:19,444 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 06:25:19,454 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 06:25:19,455 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 06:25:19,456 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 06:25:19,456 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 06:25:19,458 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 06:25:19,458 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 06:25:19,459 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 06:25:19,459 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 06:25:19,459 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 06:25:19,461 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 06:25:19,461 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 06:25:19,463 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2020-10-20 06:25:19,501 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 06:25:19,501 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 06:25:19,503 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 06:25:19,504 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 06:25:19,504 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 06:25:19,504 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 06:25:19,504 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 06:25:19,504 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 06:25:19,504 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 06:25:19,505 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 06:25:19,506 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 06:25:19,506 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 06:25:19,506 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-10-20 06:25:19,507 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 06:25:19,507 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 06:25:19,507 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 06:25:19,507 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 06:25:19,507 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 06:25:19,507 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 06:25:19,508 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 06:25:19,508 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 06:25:19,508 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 06:25:19,508 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 06:25:19,508 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 06:25:19,509 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 06:25:19,509 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 06:25:19,509 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 06:25:19,509 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 06:25:19,509 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 -> f1df70d37f8afdd882c0c58eaed03ed11e314407 [2020-10-20 06:25:19,715 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 06:25:19,727 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 06:25:19,731 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 06:25:19,732 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 06:25:19,733 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 06:25:19,734 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex2.c [2020-10-20 06:25:19,798 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/788327fba/a6ae2ef09f704364a415b72ac09f0844/FLAGb3f69d9a8 [2020-10-20 06:25:20,166 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 06:25:20,166 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex2.c [2020-10-20 06:25:20,174 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/788327fba/a6ae2ef09f704364a415b72ac09f0844/FLAGb3f69d9a8 [2020-10-20 06:25:20,568 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/788327fba/a6ae2ef09f704364a415b72ac09f0844 [2020-10-20 06:25:20,572 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 06:25:20,579 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 06:25:20,580 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 06:25:20,580 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 06:25:20,592 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 06:25:20,593 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:25:20" (1/1) ... [2020-10-20 06:25:20,596 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19aaebd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:25:20, skipping insertion in model container [2020-10-20 06:25:20,597 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:25:20" (1/1) ... [2020-10-20 06:25:20,604 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 06:25:20,622 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 06:25:20,896 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:25:20,902 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 06:25:20,921 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:25:20,934 INFO L208 MainTranslator]: Completed translation [2020-10-20 06:25:20,935 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:25:20 WrapperNode [2020-10-20 06:25:20,935 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 06:25:20,936 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 06:25:20,936 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 06:25:20,936 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 06:25:20,943 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:25:20" (1/1) ... [2020-10-20 06:25:20,947 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:25:20" (1/1) ... [2020-10-20 06:25:20,965 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 06:25:20,965 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 06:25:20,966 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 06:25:20,966 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 06:25:20,975 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:25:20" (1/1) ... [2020-10-20 06:25:20,975 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:25:20" (1/1) ... [2020-10-20 06:25:20,976 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:25:20" (1/1) ... [2020-10-20 06:25:20,977 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:25:20" (1/1) ... [2020-10-20 06:25:20,979 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:25:20" (1/1) ... [2020-10-20 06:25:20,981 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:25:20" (1/1) ... [2020-10-20 06:25:20,982 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:25:20" (1/1) ... [2020-10-20 06:25:20,984 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 06:25:20,984 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 06:25:20,984 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 06:25:20,985 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 06:25:20,985 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:25:20" (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 [2020-10-20 06:25:21,044 INFO L130 BoogieDeclarations]: Found specification of procedure f [2020-10-20 06:25:21,044 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2020-10-20 06:25:21,045 INFO L130 BoogieDeclarations]: Found specification of procedure g [2020-10-20 06:25:21,045 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2020-10-20 06:25:21,047 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 06:25:21,047 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 06:25:21,238 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 06:25:21,239 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-20 06:25:21,240 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:25:21 BoogieIcfgContainer [2020-10-20 06:25:21,241 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 06:25:21,242 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 06:25:21,242 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 06:25:21,245 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 06:25:21,246 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 06:25:20" (1/3) ... [2020-10-20 06:25:21,247 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@151f9877 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:25:21, skipping insertion in model container [2020-10-20 06:25:21,247 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:25:20" (2/3) ... [2020-10-20 06:25:21,247 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@151f9877 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:25:21, skipping insertion in model container [2020-10-20 06:25:21,247 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:25:21" (3/3) ... [2020-10-20 06:25:21,249 INFO L111 eAbstractionObserver]: Analyzing ICFG LeeJonesBen-Amram-POPL2001-Ex2.c [2020-10-20 06:25:21,261 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 06:25:21,269 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-10-20 06:25:21,287 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-20 06:25:21,319 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 06:25:21,320 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 06:25:21,320 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 06:25:21,320 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 06:25:21,320 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 06:25:21,320 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 06:25:21,321 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 06:25:21,321 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 06:25:21,350 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-10-20 06:25:21,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-20 06:25:21,356 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:25:21,358 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-20 06:25:21,358 INFO L429 AbstractCegarLoop]: === Iteration 1 === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:25:21,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:25:21,366 INFO L82 PathProgramCache]: Analyzing trace with hash 1512012543, now seen corresponding path program 1 times [2020-10-20 06:25:21,376 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:25:21,377 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011345215] [2020-10-20 06:25:21,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:25:21,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:25:21,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:25:21,580 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011345215] [2020-10-20 06:25:21,581 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:25:21,581 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 06:25:21,582 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843752604] [2020-10-20 06:25:21,587 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 06:25:21,588 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:25:21,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 06:25:21,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 06:25:21,607 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 5 states. [2020-10-20 06:25:21,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:25:21,713 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2020-10-20 06:25:21,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 06:25:21,715 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 6 [2020-10-20 06:25:21,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:25:21,724 INFO L225 Difference]: With dead ends: 39 [2020-10-20 06:25:21,724 INFO L226 Difference]: Without dead ends: 22 [2020-10-20 06:25:21,727 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-20 06:25:21,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-10-20 06:25:21,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 19. [2020-10-20 06:25:21,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-10-20 06:25:21,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2020-10-20 06:25:21,757 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 6 [2020-10-20 06:25:21,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:25:21,758 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2020-10-20 06:25:21,758 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 06:25:21,758 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2020-10-20 06:25:21,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-20 06:25:21,759 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:25:21,759 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:25:21,759 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 06:25:21,760 INFO L429 AbstractCegarLoop]: === Iteration 2 === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:25:21,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:25:21,760 INFO L82 PathProgramCache]: Analyzing trace with hash -372251385, now seen corresponding path program 1 times [2020-10-20 06:25:21,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:25:21,761 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707128052] [2020-10-20 06:25:21,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:25:21,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:25:21,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:25:21,806 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707128052] [2020-10-20 06:25:21,807 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:25:21,807 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 06:25:21,807 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725516812] [2020-10-20 06:25:21,808 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 06:25:21,809 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:25:21,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 06:25:21,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 06:25:21,809 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 5 states. [2020-10-20 06:25:21,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:25:21,854 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2020-10-20 06:25:21,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 06:25:21,855 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2020-10-20 06:25:21,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:25:21,856 INFO L225 Difference]: With dead ends: 22 [2020-10-20 06:25:21,856 INFO L226 Difference]: Without dead ends: 21 [2020-10-20 06:25:21,857 INFO L677 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 [2020-10-20 06:25:21,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-10-20 06:25:21,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2020-10-20 06:25:21,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-10-20 06:25:21,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2020-10-20 06:25:21,862 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 7 [2020-10-20 06:25:21,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:25:21,863 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2020-10-20 06:25:21,863 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 06:25:21,863 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2020-10-20 06:25:21,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-20 06:25:21,864 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:25:21,864 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:25:21,864 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 06:25:21,864 INFO L429 AbstractCegarLoop]: === Iteration 3 === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:25:21,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:25:21,865 INFO L82 PathProgramCache]: Analyzing trace with hash -135389413, now seen corresponding path program 1 times [2020-10-20 06:25:21,865 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:25:21,865 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70371009] [2020-10-20 06:25:21,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:25:21,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:25:21,884 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:25:21,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:25:21,900 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:25:21,919 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:25:21,919 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 06:25:21,920 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-20 06:25:21,947 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 06:25:21 BoogieIcfgContainer [2020-10-20 06:25:21,947 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 06:25:21,947 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 06:25:21,948 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 06:25:21,948 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 06:25:21,948 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:25:21" (3/4) ... [2020-10-20 06:25:21,951 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-20 06:25:21,993 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 06:25:21,993 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 06:25:21,996 INFO L168 Benchmark]: Toolchain (without parser) took 1421.53 ms. Allocated memory was 34.6 MB in the beginning and 48.8 MB in the end (delta: 14.2 MB). Free memory was 7.1 MB in the beginning and 22.9 MB in the end (delta: -15.9 MB). There was no memory consumed. Max. memory is 14.3 GB. [2020-10-20 06:25:21,997 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 34.1 MB. Free memory was 11.7 MB in the beginning and 11.6 MB in the end (delta: 47.4 kB). Peak memory consumption was 47.4 kB. Max. memory is 14.3 GB. [2020-10-20 06:25:21,998 INFO L168 Benchmark]: CACSL2BoogieTranslator took 355.23 ms. Allocated memory was 34.6 MB in the beginning and 45.1 MB in the end (delta: 10.5 MB). Free memory was 6.2 MB in the beginning and 28.5 MB in the end (delta: -22.3 MB). Peak memory consumption was 5.9 MB. Max. memory is 14.3 GB. [2020-10-20 06:25:21,999 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.43 ms. Allocated memory is still 45.1 MB. Free memory was 28.4 MB in the beginning and 26.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 14.3 GB. [2020-10-20 06:25:21,999 INFO L168 Benchmark]: Boogie Preprocessor took 18.44 ms. Allocated memory is still 45.1 MB. Free memory was 26.9 MB in the beginning and 25.8 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 14.3 GB. [2020-10-20 06:25:22,000 INFO L168 Benchmark]: RCFGBuilder took 256.55 ms. Allocated memory was 45.1 MB in the beginning and 46.7 MB in the end (delta: 1.6 MB). Free memory was 25.8 MB in the beginning and 27.5 MB in the end (delta: -1.7 MB). Peak memory consumption was 14.4 MB. Max. memory is 14.3 GB. [2020-10-20 06:25:22,001 INFO L168 Benchmark]: TraceAbstraction took 705.24 ms. Allocated memory was 46.7 MB in the beginning and 48.8 MB in the end (delta: 2.1 MB). Free memory was 27.1 MB in the beginning and 25.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 4.1 MB. Max. memory is 14.3 GB. [2020-10-20 06:25:22,002 INFO L168 Benchmark]: Witness Printer took 46.05 ms. Allocated memory is still 48.8 MB. Free memory was 25.0 MB in the beginning and 22.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 14.3 GB. [2020-10-20 06:25:22,013 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 34.1 MB. Free memory was 11.7 MB in the beginning and 11.6 MB in the end (delta: 47.4 kB). Peak memory consumption was 47.4 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 355.23 ms. Allocated memory was 34.6 MB in the beginning and 45.1 MB in the end (delta: 10.5 MB). Free memory was 6.2 MB in the beginning and 28.5 MB in the end (delta: -22.3 MB). Peak memory consumption was 5.9 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 29.43 ms. Allocated memory is still 45.1 MB. Free memory was 28.4 MB in the beginning and 26.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 18.44 ms. Allocated memory is still 45.1 MB. Free memory was 26.9 MB in the beginning and 25.8 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 14.3 GB. * RCFGBuilder took 256.55 ms. Allocated memory was 45.1 MB in the beginning and 46.7 MB in the end (delta: 1.6 MB). Free memory was 25.8 MB in the beginning and 27.5 MB in the end (delta: -1.7 MB). Peak memory consumption was 14.4 MB. Max. memory is 14.3 GB. * TraceAbstraction took 705.24 ms. Allocated memory was 46.7 MB in the beginning and 48.8 MB in the end (delta: 2.1 MB). Free memory was 27.1 MB in the beginning and 25.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 4.1 MB. Max. memory is 14.3 GB. * Witness Printer took 46.05 ms. Allocated memory is still 48.8 MB. Free memory was 25.0 MB in the beginning and 22.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 26]: integer overflow possible integer overflow possible We found a FailurePath: [L30] int i = __VERIFIER_nondet_int(); [L31] int x = __VERIFIER_nondet_int(); [L32] COND TRUE i >= 0 && x >= 0 [L33] CALL f(i,x) VAL [\old(i)=2147483647, \old(x)=1] [L18] COND FALSE !(i==0) VAL [\old(i)=2147483647, \old(x)=1, i=2147483647, x=1] [L21] EXPR i-1 VAL [\old(i)=2147483647, \old(x)=1, i=2147483647, x=1] [L21] CALL g(i-1,x,i) VAL [\old(a)=2147483646, \old(b)=1, \old(c)=2147483647] [L26] b+c VAL [\old(a)=2147483646, \old(b)=1, \old(c)=2147483647, a=2147483646, b=1, c=2147483647] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 27 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.6s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 33 SDtfs, 25 SDslu, 91 SDs, 0 SdLazy, 44 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s 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, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 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, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...