./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive-simple/sum_non_eq-3.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ae007674 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/recursive-simple/sum_non_eq-3.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-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 ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 41c9705134faa9e28eba566071c8a538a7da12abc5ccedccf4ff4ee4f7173585 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 01:02:04,395 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 01:02:04,397 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 01:02:04,435 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 01:02:04,436 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 01:02:04,439 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 01:02:04,441 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 01:02:04,446 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 01:02:04,448 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 01:02:04,451 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 01:02:04,452 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 01:02:04,456 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 01:02:04,456 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 01:02:04,458 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 01:02:04,459 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 01:02:04,461 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 01:02:04,461 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 01:02:04,462 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 01:02:04,465 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 01:02:04,468 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 01:02:04,470 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 01:02:04,471 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 01:02:04,472 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 01:02:04,473 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 01:02:04,477 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 01:02:04,480 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 01:02:04,481 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 01:02:04,482 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 01:02:04,482 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 01:02:04,483 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 01:02:04,483 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 01:02:04,484 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 01:02:04,485 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 01:02:04,486 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 01:02:04,487 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 01:02:04,487 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 01:02:04,488 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 01:02:04,488 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 01:02:04,488 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 01:02:04,489 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 01:02:04,490 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 01:02:04,491 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-28 01:02:04,526 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 01:02:04,526 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 01:02:04,527 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 01:02:04,527 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 01:02:04,528 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 01:02:04,528 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 01:02:04,529 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 01:02:04,529 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 01:02:04,530 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 01:02:04,530 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 01:02:04,531 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-28 01:02:04,531 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 01:02:04,531 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-28 01:02:04,531 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 01:02:04,531 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-28 01:02:04,532 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 01:02:04,532 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-28 01:02:04,532 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-28 01:02:04,532 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 01:02:04,532 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 01:02:04,532 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-28 01:02:04,533 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 01:02:04,533 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 01:02:04,533 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 01:02:04,533 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 01:02:04,533 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 01:02:04,534 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 01:02:04,534 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-28 01:02:04,534 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 01:02:04,534 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-28 01:02:04,534 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-28 01:02:04,534 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-28 01:02:04,535 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-28 01:02:04,535 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 41c9705134faa9e28eba566071c8a538a7da12abc5ccedccf4ff4ee4f7173585 [2021-12-28 01:02:04,855 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 01:02:04,890 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 01:02:04,892 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 01:02:04,893 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 01:02:04,894 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 01:02:04,895 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive-simple/sum_non_eq-3.c [2021-12-28 01:02:04,942 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/02fc16180/a21676db15c1442c9c5001ea8dfcafbc/FLAG8f1d4a848 [2021-12-28 01:02:05,369 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 01:02:05,369 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/sum_non_eq-3.c [2021-12-28 01:02:05,373 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/02fc16180/a21676db15c1442c9c5001ea8dfcafbc/FLAG8f1d4a848 [2021-12-28 01:02:05,779 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/02fc16180/a21676db15c1442c9c5001ea8dfcafbc [2021-12-28 01:02:05,781 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 01:02:05,783 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 01:02:05,785 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 01:02:05,785 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 01:02:05,788 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 01:02:05,789 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 01:02:05" (1/1) ... [2021-12-28 01:02:05,790 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73136869 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:02:05, skipping insertion in model container [2021-12-28 01:02:05,790 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 01:02:05" (1/1) ... [2021-12-28 01:02:05,796 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 01:02:05,806 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 01:02:05,923 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/sum_non_eq-3.c[628,641] [2021-12-28 01:02:05,926 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 01:02:05,935 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 01:02:05,948 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/sum_non_eq-3.c[628,641] [2021-12-28 01:02:05,950 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 01:02:05,961 INFO L208 MainTranslator]: Completed translation [2021-12-28 01:02:05,962 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:02:05 WrapperNode [2021-12-28 01:02:05,962 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 01:02:05,965 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 01:02:05,965 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 01:02:05,965 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 01:02:05,972 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:02:05" (1/1) ... [2021-12-28 01:02:05,984 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:02:05" (1/1) ... [2021-12-28 01:02:05,999 INFO L137 Inliner]: procedures = 13, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 21 [2021-12-28 01:02:06,000 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 01:02:06,001 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 01:02:06,001 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 01:02:06,001 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 01:02:06,018 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:02:05" (1/1) ... [2021-12-28 01:02:06,018 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:02:05" (1/1) ... [2021-12-28 01:02:06,020 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:02:05" (1/1) ... [2021-12-28 01:02:06,020 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:02:05" (1/1) ... [2021-12-28 01:02:06,032 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:02:05" (1/1) ... [2021-12-28 01:02:06,033 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:02:05" (1/1) ... [2021-12-28 01:02:06,034 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:02:05" (1/1) ... [2021-12-28 01:02:06,035 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 01:02:06,036 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 01:02:06,036 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 01:02:06,036 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 01:02:06,037 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:02:05" (1/1) ... [2021-12-28 01:02:06,044 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 01:02:06,053 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 01:02:06,070 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-28 01:02:06,072 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-28 01:02:06,096 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 01:02:06,096 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 01:02:06,096 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 01:02:06,096 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2021-12-28 01:02:06,096 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2021-12-28 01:02:06,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-28 01:02:06,145 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 01:02:06,147 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 01:02:06,259 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 01:02:06,264 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 01:02:06,265 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-28 01:02:06,266 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 01:02:06 BoogieIcfgContainer [2021-12-28 01:02:06,267 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 01:02:06,268 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 01:02:06,269 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 01:02:06,271 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 01:02:06,271 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 01:02:05" (1/3) ... [2021-12-28 01:02:06,272 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e40cfc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 01:02:06, skipping insertion in model container [2021-12-28 01:02:06,272 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:02:05" (2/3) ... [2021-12-28 01:02:06,273 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e40cfc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 01:02:06, skipping insertion in model container [2021-12-28 01:02:06,273 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 01:02:06" (3/3) ... [2021-12-28 01:02:06,274 INFO L111 eAbstractionObserver]: Analyzing ICFG sum_non_eq-3.c [2021-12-28 01:02:06,278 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 01:02:06,279 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-28 01:02:06,327 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 01:02:06,335 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=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, mLoopAccelerationTechnique=FAST_UPR [2021-12-28 01:02:06,336 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-28 01:02:06,358 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 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) [2021-12-28 01:02:06,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-28 01:02:06,366 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:02:06,367 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:02:06,368 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:02:06,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:02:06,373 INFO L85 PathProgramCache]: Analyzing trace with hash -358017204, now seen corresponding path program 1 times [2021-12-28 01:02:06,380 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:02:06,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64114830] [2021-12-28 01:02:06,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:02:06,382 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:02:06,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 01:02:06,488 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 01:02:06,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 01:02:06,542 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 01:02:06,543 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-28 01:02:06,545 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-28 01:02:06,546 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-28 01:02:06,550 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2021-12-28 01:02:06,553 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-28 01:02:06,576 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.12 01:02:06 BoogieIcfgContainer [2021-12-28 01:02:06,577 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-28 01:02:06,579 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-28 01:02:06,579 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-28 01:02:06,580 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-28 01:02:06,580 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 01:02:06" (3/4) ... [2021-12-28 01:02:06,582 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-12-28 01:02:06,623 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-28 01:02:06,624 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-28 01:02:06,625 INFO L158 Benchmark]: Toolchain (without parser) took 842.12ms. Allocated memory was 54.5MB in the beginning and 69.2MB in the end (delta: 14.7MB). Free memory was 32.0MB in the beginning and 45.1MB in the end (delta: -13.1MB). Peak memory consumption was 302.2kB. Max. memory is 16.1GB. [2021-12-28 01:02:06,626 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 54.5MB. Free memory is still 36.9MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-28 01:02:06,627 INFO L158 Benchmark]: CACSL2BoogieTranslator took 177.77ms. Allocated memory is still 54.5MB. Free memory was 31.8MB in the beginning and 36.2MB in the end (delta: -4.3MB). Peak memory consumption was 7.2MB. Max. memory is 16.1GB. [2021-12-28 01:02:06,627 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.11ms. Allocated memory is still 54.5MB. Free memory was 36.2MB in the beginning and 34.8MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-28 01:02:06,628 INFO L158 Benchmark]: Boogie Preprocessor took 34.52ms. Allocated memory was 54.5MB in the beginning and 69.2MB in the end (delta: 14.7MB). Free memory was 34.8MB in the beginning and 53.4MB in the end (delta: -18.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-28 01:02:06,628 INFO L158 Benchmark]: RCFGBuilder took 231.05ms. Allocated memory is still 69.2MB. Free memory was 53.4MB in the beginning and 45.0MB in the end (delta: 8.4MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-12-28 01:02:06,628 INFO L158 Benchmark]: TraceAbstraction took 308.81ms. Allocated memory is still 69.2MB. Free memory was 44.6MB in the beginning and 46.9MB in the end (delta: -2.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-28 01:02:06,629 INFO L158 Benchmark]: Witness Printer took 44.83ms. Allocated memory is still 69.2MB. Free memory was 46.9MB in the beginning and 45.1MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-28 01:02:06,634 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 54.5MB. Free memory is still 36.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 177.77ms. Allocated memory is still 54.5MB. Free memory was 31.8MB in the beginning and 36.2MB in the end (delta: -4.3MB). Peak memory consumption was 7.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.11ms. Allocated memory is still 54.5MB. Free memory was 36.2MB in the beginning and 34.8MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 34.52ms. Allocated memory was 54.5MB in the beginning and 69.2MB in the end (delta: 14.7MB). Free memory was 34.8MB in the beginning and 53.4MB in the end (delta: -18.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 231.05ms. Allocated memory is still 69.2MB. Free memory was 53.4MB in the beginning and 45.0MB in the end (delta: 8.4MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * TraceAbstraction took 308.81ms. Allocated memory is still 69.2MB. Free memory was 44.6MB in the beginning and 46.9MB in the end (delta: -2.3MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 44.83ms. Allocated memory is still 69.2MB. Free memory was 46.9MB in the beginning and 45.1MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 19]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L15] unsigned int a = __VERIFIER_nondet_uint(); [L16] unsigned int b = __VERIFIER_nondet_uint(); [L17] CALL, EXPR sum(a, b) VAL [\old(m)=0, \old(n)=0] [L7] COND TRUE n == 0 [L8] return m; VAL [\old(m)=0, \old(n)=0, \result=0, m=0, n=0] [L17] RET, EXPR sum(a, b) VAL [a=0, b=0, sum(a, b)=0] [L17] unsigned int result = sum(a, b); [L18] COND TRUE result == a + b VAL [a=0, b=0, result=0] [L19] reach_error() VAL [a=0, b=0, result=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 16 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-12-28 01:02:06,667 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, 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