./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/memsafety/test-0218.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 839c364b 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/AutomizerTermination.xml -i ../sv-benchmarks/c/memsafety/test-0218.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-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(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d0144744ce48339ff9171f70682ff014d707c8affcdd45929fe7382e980b7693 --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 23:55:30,396 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 23:55:30,397 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 23:55:30,430 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 23:55:30,443 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 23:55:30,447 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 23:55:30,449 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 23:55:30,451 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 23:55:30,452 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 23:55:30,453 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 23:55:30,453 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 23:55:30,454 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 23:55:30,454 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 23:55:30,455 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 23:55:30,456 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 23:55:30,457 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 23:55:30,457 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 23:55:30,458 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 23:55:30,459 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 23:55:30,460 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 23:55:30,461 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 23:55:30,462 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 23:55:30,462 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 23:55:30,463 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 23:55:30,465 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 23:55:30,465 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 23:55:30,465 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 23:55:30,466 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 23:55:30,466 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 23:55:30,467 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 23:55:30,467 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 23:55:30,467 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 23:55:30,468 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 23:55:30,468 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 23:55:30,469 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 23:55:30,469 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 23:55:30,470 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 23:55:30,470 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 23:55:30,470 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 23:55:30,471 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 23:55:30,471 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 23:55:30,472 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-12-14 23:55:30,490 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 23:55:30,491 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 23:55:30,491 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 23:55:30,491 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 23:55:30,492 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 23:55:30,492 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 23:55:30,492 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 23:55:30,492 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-14 23:55:30,493 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-14 23:55:30,493 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-14 23:55:30,494 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-14 23:55:30,494 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-14 23:55:30,494 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-14 23:55:30,494 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 23:55:30,494 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-14 23:55:30,494 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-14 23:55:30,495 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 23:55:30,495 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-14 23:55:30,495 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 23:55:30,495 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-14 23:55:30,495 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-14 23:55:30,495 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-14 23:55:30,496 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-14 23:55:30,496 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 23:55:30,496 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-14 23:55:30,496 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 23:55:30,496 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-14 23:55:30,497 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 23:55:30,497 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 23:55:30,497 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 23:55:30,497 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 23:55:30,497 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 23:55:30,498 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-14 23:55:30,498 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d0144744ce48339ff9171f70682ff014d707c8affcdd45929fe7382e980b7693 [2021-12-14 23:55:30,690 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 23:55:30,712 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 23:55:30,713 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 23:55:30,714 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 23:55:30,715 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 23:55:30,715 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety/test-0218.i [2021-12-14 23:55:30,762 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b92eea241/7051685f814043598c3d5c17aaebb3aa/FLAGfc81b2b46 [2021-12-14 23:55:31,167 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 23:55:31,168 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety/test-0218.i [2021-12-14 23:55:31,185 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b92eea241/7051685f814043598c3d5c17aaebb3aa/FLAGfc81b2b46 [2021-12-14 23:55:31,197 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b92eea241/7051685f814043598c3d5c17aaebb3aa [2021-12-14 23:55:31,199 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 23:55:31,200 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 23:55:31,201 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 23:55:31,201 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 23:55:31,203 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 23:55:31,204 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 11:55:31" (1/1) ... [2021-12-14 23:55:31,205 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3eeb1f9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:55:31, skipping insertion in model container [2021-12-14 23:55:31,205 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 11:55:31" (1/1) ... [2021-12-14 23:55:31,210 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 23:55:31,242 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 23:55:31,479 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 23:55:31,492 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 23:55:31,535 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 23:55:31,557 INFO L208 MainTranslator]: Completed translation [2021-12-14 23:55:31,558 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:55:31 WrapperNode [2021-12-14 23:55:31,558 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 23:55:31,559 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 23:55:31,559 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 23:55:31,559 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 23:55:31,572 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:55:31" (1/1) ... [2021-12-14 23:55:31,587 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:55:31" (1/1) ... [2021-12-14 23:55:31,607 INFO L137 Inliner]: procedures = 181, calls = 46, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 200 [2021-12-14 23:55:31,607 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 23:55:31,608 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 23:55:31,608 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 23:55:31,608 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 23:55:31,615 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:55:31" (1/1) ... [2021-12-14 23:55:31,615 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:55:31" (1/1) ... [2021-12-14 23:55:31,618 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:55:31" (1/1) ... [2021-12-14 23:55:31,618 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:55:31" (1/1) ... [2021-12-14 23:55:31,624 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:55:31" (1/1) ... [2021-12-14 23:55:31,627 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:55:31" (1/1) ... [2021-12-14 23:55:31,629 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:55:31" (1/1) ... [2021-12-14 23:55:31,631 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 23:55:31,632 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 23:55:31,632 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 23:55:31,632 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 23:55:31,633 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:55:31" (1/1) ... [2021-12-14 23:55:31,638 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:55:31,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:55:31,659 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 23:55:31,668 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-12-14 23:55:31,690 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-14 23:55:31,691 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-14 23:55:31,691 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-14 23:55:31,691 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 23:55:31,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-14 23:55:31,691 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-14 23:55:31,691 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-14 23:55:31,692 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-14 23:55:31,692 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 23:55:31,692 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 23:55:31,692 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 23:55:31,796 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 23:55:31,805 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 23:55:31,807 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-14 23:55:32,028 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 23:55:32,032 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 23:55:32,032 INFO L301 CfgBuilder]: Removed 5 assume(true) statements. [2021-12-14 23:55:32,033 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:55:32 BoogieIcfgContainer [2021-12-14 23:55:32,034 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 23:55:32,034 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-14 23:55:32,034 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-14 23:55:32,038 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-14 23:55:32,039 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-14 23:55:32,039 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 14.12 11:55:31" (1/3) ... [2021-12-14 23:55:32,040 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5ead0a1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 14.12 11:55:32, skipping insertion in model container [2021-12-14 23:55:32,040 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-14 23:55:32,040 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:55:31" (2/3) ... [2021-12-14 23:55:32,040 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5ead0a1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 14.12 11:55:32, skipping insertion in model container [2021-12-14 23:55:32,040 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-14 23:55:32,040 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:55:32" (3/3) ... [2021-12-14 23:55:32,041 INFO L388 chiAutomizerObserver]: Analyzing ICFG test-0218.i [2021-12-14 23:55:32,072 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-14 23:55:32,072 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-14 23:55:32,072 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-14 23:55:32,072 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-14 23:55:32,073 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-14 23:55:32,073 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-14 23:55:32,073 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-14 23:55:32,073 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-14 23:55:32,082 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 52 states, 49 states have (on average 1.5510204081632653) internal successors, (76), 49 states have internal predecessors, (76), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-14 23:55:32,096 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 39 [2021-12-14 23:55:32,097 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 23:55:32,097 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 23:55:32,100 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-14 23:55:32,101 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-12-14 23:55:32,101 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-14 23:55:32,101 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 52 states, 49 states have (on average 1.5510204081632653) internal successors, (76), 49 states have internal predecessors, (76), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-14 23:55:32,103 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 39 [2021-12-14 23:55:32,104 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 23:55:32,104 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 23:55:32,104 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-14 23:55:32,104 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-12-14 23:55:32,108 INFO L791 eck$LassoCheckResult]: Stem: 44#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(12, 2);~#list~0.base, ~#list~0.offset := 3, 0;call #Ultimate.allocInit(8, 3);call write~init~$Pointer$(0, 0, ~#list~0.base, ~#list~0.offset, 4);call write~init~$Pointer$(0, 0, ~#list~0.base, 4 + ~#list~0.offset, 4); 36#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret31#1, main_#t~nondet30#1, main_#t~ret33#1, main_#t~nondet32#1, main_#t~nondet29#1, main_#t~nondet34#1, main_#t~mem35#1.base, main_#t~mem35#1.offset, main_#t~mem36#1.base, main_#t~mem36#1.offset, main_~next~1#1.base, main_~next~1#1.offset, main_~end_point~0#1, main_~direction~0#1, main_~cursor~1#1.base, main_~cursor~1#1.offset; 8#L726-2true [2021-12-14 23:55:32,109 INFO L793 eck$LassoCheckResult]: Loop: 8#L726-2true assume !!(0 != main_#t~nondet29#1);havoc main_#t~nondet29#1; 11#L724-2true assume !true; 14#L726-1true assume !true; 8#L726-2true [2021-12-14 23:55:32,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:55:32,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1251, now seen corresponding path program 1 times [2021-12-14 23:55:32,118 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:55:32,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920552789] [2021-12-14 23:55:32,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:55:32,120 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:55:32,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:55:32,173 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:55:32,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:55:32,202 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:55:32,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:55:32,205 INFO L85 PathProgramCache]: Analyzing trace with hash 52490, now seen corresponding path program 1 times [2021-12-14 23:55:32,205 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:55:32,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658360888] [2021-12-14 23:55:32,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:55:32,205 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:55:32,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:55:32,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 23:55:32,248 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 23:55:32,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658360888] [2021-12-14 23:55:32,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658360888] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 23:55:32,249 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 23:55:32,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-14 23:55:32,249 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167107812] [2021-12-14 23:55:32,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 23:55:32,253 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-14 23:55:32,254 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 23:55:32,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-14 23:55:32,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-14 23:55:32,284 INFO L87 Difference]: Start difference. First operand has 52 states, 49 states have (on average 1.5510204081632653) internal successors, (76), 49 states have internal predecessors, (76), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:55:32,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 23:55:32,295 INFO L93 Difference]: Finished difference Result 52 states and 72 transitions. [2021-12-14 23:55:32,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-14 23:55:32,299 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 52 states and 72 transitions. [2021-12-14 23:55:32,302 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 39 [2021-12-14 23:55:32,305 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 52 states to 48 states and 68 transitions. [2021-12-14 23:55:32,306 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 48 [2021-12-14 23:55:32,306 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 48 [2021-12-14 23:55:32,307 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 68 transitions. [2021-12-14 23:55:32,307 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-14 23:55:32,307 INFO L681 BuchiCegarLoop]: Abstraction has 48 states and 68 transitions. [2021-12-14 23:55:32,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states and 68 transitions. [2021-12-14 23:55:32,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2021-12-14 23:55:32,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 46 states have (on average 1.434782608695652) internal successors, (66), 45 states have internal predecessors, (66), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-14 23:55:32,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 68 transitions. [2021-12-14 23:55:32,330 INFO L704 BuchiCegarLoop]: Abstraction has 48 states and 68 transitions. [2021-12-14 23:55:32,330 INFO L587 BuchiCegarLoop]: Abstraction has 48 states and 68 transitions. [2021-12-14 23:55:32,331 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-12-14 23:55:32,331 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 48 states and 68 transitions. [2021-12-14 23:55:32,335 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 39 [2021-12-14 23:55:32,335 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 23:55:32,335 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 23:55:32,336 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-14 23:55:32,336 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-12-14 23:55:32,336 INFO L791 eck$LassoCheckResult]: Stem: 149#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(12, 2);~#list~0.base, ~#list~0.offset := 3, 0;call #Ultimate.allocInit(8, 3);call write~init~$Pointer$(0, 0, ~#list~0.base, ~#list~0.offset, 4);call write~init~$Pointer$(0, 0, ~#list~0.base, 4 + ~#list~0.offset, 4); 128#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret31#1, main_#t~nondet30#1, main_#t~ret33#1, main_#t~nondet32#1, main_#t~nondet29#1, main_#t~nondet34#1, main_#t~mem35#1.base, main_#t~mem35#1.offset, main_#t~mem36#1.base, main_#t~mem36#1.offset, main_~next~1#1.base, main_~next~1#1.offset, main_~end_point~0#1, main_~direction~0#1, main_~cursor~1#1.base, main_~cursor~1#1.offset; 129#L726-2 [2021-12-14 23:55:32,336 INFO L793 eck$LassoCheckResult]: Loop: 129#L726-2 assume !!(0 != main_#t~nondet29#1);havoc main_#t~nondet29#1; 131#L724-2 assume !(0 != main_#t~nondet30#1);havoc main_#t~nondet30#1; 140#L726-1 assume !(0 != main_#t~nondet32#1);havoc main_#t~nondet32#1; 129#L726-2 [2021-12-14 23:55:32,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:55:32,337 INFO L85 PathProgramCache]: Analyzing trace with hash 1251, now seen corresponding path program 2 times [2021-12-14 23:55:32,338 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:55:32,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206362455] [2021-12-14 23:55:32,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:55:32,338 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:55:32,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:55:32,358 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:55:32,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:55:32,367 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:55:32,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:55:32,368 INFO L85 PathProgramCache]: Analyzing trace with hash 49962, now seen corresponding path program 1 times [2021-12-14 23:55:32,368 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:55:32,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025974543] [2021-12-14 23:55:32,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:55:32,369 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:55:32,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:55:32,378 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:55:32,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:55:32,383 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:55:32,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:55:32,383 INFO L85 PathProgramCache]: Analyzing trace with hash 37288712, now seen corresponding path program 1 times [2021-12-14 23:55:32,384 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:55:32,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945429360] [2021-12-14 23:55:32,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:55:32,384 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:55:32,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:55:32,391 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:55:32,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:55:32,405 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:55:32,582 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 14.12 11:55:32 BoogieIcfgContainer [2021-12-14 23:55:32,583 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-12-14 23:55:32,583 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-14 23:55:32,583 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-14 23:55:32,583 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-14 23:55:32,589 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:55:32" (3/4) ... [2021-12-14 23:55:32,591 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-12-14 23:55:32,608 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-14 23:55:32,608 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-14 23:55:32,609 INFO L158 Benchmark]: Toolchain (without parser) took 1408.48ms. Allocated memory was 86.0MB in the beginning and 111.1MB in the end (delta: 25.2MB). Free memory was 55.2MB in the beginning and 84.1MB in the end (delta: -28.9MB). Peak memory consumption was 46.6MB. Max. memory is 16.1GB. [2021-12-14 23:55:32,610 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 86.0MB. Free memory is still 44.2MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-14 23:55:32,610 INFO L158 Benchmark]: CACSL2BoogieTranslator took 356.92ms. Allocated memory is still 86.0MB. Free memory was 55.1MB in the beginning and 51.5MB in the end (delta: 3.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-14 23:55:32,614 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.67ms. Allocated memory is still 86.0MB. Free memory was 51.5MB in the beginning and 48.8MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-14 23:55:32,614 INFO L158 Benchmark]: Boogie Preprocessor took 23.57ms. Allocated memory is still 86.0MB. Free memory was 48.8MB in the beginning and 46.8MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-14 23:55:32,614 INFO L158 Benchmark]: RCFGBuilder took 401.77ms. Allocated memory was 86.0MB in the beginning and 111.1MB in the end (delta: 25.2MB). Free memory was 46.8MB in the beginning and 75.4MB in the end (delta: -28.7MB). Peak memory consumption was 13.2MB. Max. memory is 16.1GB. [2021-12-14 23:55:32,615 INFO L158 Benchmark]: BuchiAutomizer took 548.46ms. Allocated memory is still 111.1MB. Free memory was 75.0MB in the beginning and 37.3MB in the end (delta: 37.7MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. [2021-12-14 23:55:32,615 INFO L158 Benchmark]: Witness Printer took 24.99ms. Allocated memory is still 111.1MB. Free memory was 37.3MB in the beginning and 84.1MB in the end (delta: -46.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-14 23:55:32,617 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 86.0MB. Free memory is still 44.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 356.92ms. Allocated memory is still 86.0MB. Free memory was 55.1MB in the beginning and 51.5MB in the end (delta: 3.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 48.67ms. Allocated memory is still 86.0MB. Free memory was 51.5MB in the beginning and 48.8MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 23.57ms. Allocated memory is still 86.0MB. Free memory was 48.8MB in the beginning and 46.8MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 401.77ms. Allocated memory was 86.0MB in the beginning and 111.1MB in the end (delta: 25.2MB). Free memory was 46.8MB in the beginning and 75.4MB in the end (delta: -28.7MB). Peak memory consumption was 13.2MB. Max. memory is 16.1GB. * BuchiAutomizer took 548.46ms. Allocated memory is still 111.1MB. Free memory was 75.0MB in the beginning and 37.3MB in the end (delta: 37.7MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. * Witness Printer took 24.99ms. Allocated memory is still 111.1MB. Free memory was 37.3MB in the beginning and 84.1MB in the end (delta: -46.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 1 terminating modules (1 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.1 modules have a trivial ranking function, the largest among these consists of 2 locations. The remainder module has 48 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.5s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 0.3s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 0. Minimization of det autom 1. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 48 states and ocurred in iteration 1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 72 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 72 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI1 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 723]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=1} State at position 1 is {next=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTArraySubscriptExpression@42279069=0, NULL=0, next=0, end_point=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTArraySubscriptExpression@42279069=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTArraySubscriptExpression@4491bd08=0, NULL=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTArraySubscriptExpression@4491bd08=0, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@235752de=0, NULL=0, list=3, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@58990c1b=0, cursor=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@49c75896=0, list=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6ca852c=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@46594da0=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@637a60ff=5, cursor=0, direction=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 723]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L722] static list_t list; Loop: [L723] COND TRUE __VERIFIER_nondet_int() [L724] COND FALSE !(__VERIFIER_nondet_int()) [L726] COND FALSE !(__VERIFIER_nondet_int()) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-12-14 23:55:32,647 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (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(TERM)