./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-regression/recursive_list.i --full-output -ea --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 03d7b7b3 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -ea -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/ldv-regression/recursive_list.i -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 52c76a7df26fca079cfc43e405f2f619070583ff933a68f0bba20f0a9dce8e14 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-03d7b7b [2022-02-20 16:49:39,681 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-20 16:49:39,683 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-20 16:49:39,757 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-20 16:49:39,758 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-20 16:49:39,761 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-20 16:49:39,762 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-20 16:49:39,764 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-20 16:49:39,765 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-20 16:49:39,769 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-20 16:49:39,770 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-20 16:49:39,771 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-20 16:49:39,771 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-20 16:49:39,773 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-20 16:49:39,774 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-20 16:49:39,776 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-20 16:49:39,777 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-20 16:49:39,778 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-20 16:49:39,780 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-20 16:49:39,784 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-20 16:49:39,785 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-20 16:49:39,786 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-20 16:49:39,787 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-20 16:49:39,788 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-20 16:49:39,791 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-02-20 16:49:39,791 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-02-20 16:49:39,792 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-02-20 16:49:39,793 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-02-20 16:49:39,793 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-02-20 16:49:39,794 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-02-20 16:49:39,794 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-02-20 16:49:39,795 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-02-20 16:49:39,796 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-02-20 16:49:39,797 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-02-20 16:49:39,797 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-02-20 16:49:39,798 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-02-20 16:49:39,798 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-02-20 16:49:39,798 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-02-20 16:49:39,798 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-20 16:49:39,799 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-20 16:49:39,800 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-20 16:49:39,801 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-02-20 16:49:39,825 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-20 16:49:39,825 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-20 16:49:39,826 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-20 16:49:39,826 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-20 16:49:39,826 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-20 16:49:39,827 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-20 16:49:39,827 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-20 16:49:39,827 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-20 16:49:39,827 INFO L138 SettingsManager]: * Use SBE=true [2022-02-20 16:49:39,828 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-20 16:49:39,828 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-20 16:49:39,828 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-20 16:49:39,829 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-20 16:49:39,829 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-20 16:49:39,829 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-20 16:49:39,829 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-20 16:49:39,829 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-20 16:49:39,829 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-20 16:49:39,829 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-20 16:49:39,830 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-20 16:49:39,830 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-20 16:49:39,830 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-20 16:49:39,830 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-20 16:49:39,830 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-20 16:49:39,830 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-20 16:49:39,831 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-20 16:49:39,831 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-20 16:49:39,832 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-20 16:49:39,832 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-20 16:49:39,832 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-20 16:49:39,832 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-20 16:49:39,832 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-02-20 16:49:39,833 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-20 16:49:39,833 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 52c76a7df26fca079cfc43e405f2f619070583ff933a68f0bba20f0a9dce8e14 [2022-02-20 16:49:40,037 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-20 16:49:40,055 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-20 16:49:40,057 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-20 16:49:40,059 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-20 16:49:40,059 INFO L275 PluginConnector]: CDTParser initialized [2022-02-20 16:49:40,060 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-regression/recursive_list.i [2022-02-20 16:49:40,103 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d64c2131/62d062e1cc7844008343f7ca0b52a6b6/FLAGb2f7e3634 [2022-02-20 16:49:40,443 INFO L306 CDTParser]: Found 1 translation units. [2022-02-20 16:49:40,444 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/recursive_list.i [2022-02-20 16:49:40,452 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d64c2131/62d062e1cc7844008343f7ca0b52a6b6/FLAGb2f7e3634 [2022-02-20 16:49:40,468 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d64c2131/62d062e1cc7844008343f7ca0b52a6b6 [2022-02-20 16:49:40,471 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-20 16:49:40,473 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-02-20 16:49:40,475 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-20 16:49:40,475 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-20 16:49:40,478 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-20 16:49:40,479 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 04:49:40" (1/1) ... [2022-02-20 16:49:40,479 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@db905d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:49:40, skipping insertion in model container [2022-02-20 16:49:40,480 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 04:49:40" (1/1) ... [2022-02-20 16:49:40,485 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-20 16:49:40,495 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-20 16:49:40,649 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/ldv-regression/recursive_list.i[409,422] [2022-02-20 16:49:40,682 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-20 16:49:40,690 INFO L203 MainTranslator]: Completed pre-run [2022-02-20 16:49:40,701 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/ldv-regression/recursive_list.i[409,422] [2022-02-20 16:49:40,712 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-20 16:49:40,724 INFO L208 MainTranslator]: Completed translation [2022-02-20 16:49:40,725 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:49:40 WrapperNode [2022-02-20 16:49:40,725 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-20 16:49:40,726 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-20 16:49:40,726 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-20 16:49:40,726 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-20 16:49:40,731 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:49:40" (1/1) ... [2022-02-20 16:49:40,737 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:49:40" (1/1) ... [2022-02-20 16:49:40,760 INFO L137 Inliner]: procedures = 19, calls = 21, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 52 [2022-02-20 16:49:40,760 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-20 16:49:40,761 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-20 16:49:40,761 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-20 16:49:40,761 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-20 16:49:40,766 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:49:40" (1/1) ... [2022-02-20 16:49:40,766 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:49:40" (1/1) ... [2022-02-20 16:49:40,772 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:49:40" (1/1) ... [2022-02-20 16:49:40,772 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:49:40" (1/1) ... [2022-02-20 16:49:40,783 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:49:40" (1/1) ... [2022-02-20 16:49:40,788 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:49:40" (1/1) ... [2022-02-20 16:49:40,789 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:49:40" (1/1) ... [2022-02-20 16:49:40,790 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-20 16:49:40,795 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-20 16:49:40,796 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-20 16:49:40,796 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-20 16:49:40,797 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:49:40" (1/1) ... [2022-02-20 16:49:40,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-20 16:49:40,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-20 16:49:40,823 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) [2022-02-20 16:49:40,841 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 [2022-02-20 16:49:40,855 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-02-20 16:49:40,856 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-20 16:49:40,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-20 16:49:40,856 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-02-20 16:49:40,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-02-20 16:49:40,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-20 16:49:40,856 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-02-20 16:49:40,856 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-20 16:49:40,857 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-20 16:49:40,857 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-20 16:49:40,857 INFO L130 BoogieDeclarations]: Found specification of procedure append [2022-02-20 16:49:40,857 INFO L138 BoogieDeclarations]: Found implementation of procedure append [2022-02-20 16:49:40,857 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-20 16:49:40,915 INFO L234 CfgBuilder]: Building ICFG [2022-02-20 16:49:40,916 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-20 16:49:41,018 INFO L275 CfgBuilder]: Performing block encoding [2022-02-20 16:49:41,022 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-20 16:49:41,022 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-02-20 16:49:41,024 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 04:49:41 BoogieIcfgContainer [2022-02-20 16:49:41,026 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-20 16:49:41,027 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-20 16:49:41,041 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-20 16:49:41,044 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-20 16:49:41,044 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.02 04:49:40" (1/3) ... [2022-02-20 16:49:41,045 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17194975 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 04:49:41, skipping insertion in model container [2022-02-20 16:49:41,045 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:49:40" (2/3) ... [2022-02-20 16:49:41,045 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17194975 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 04:49:41, skipping insertion in model container [2022-02-20 16:49:41,045 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 04:49:41" (3/3) ... [2022-02-20 16:49:41,046 INFO L111 eAbstractionObserver]: Analyzing ICFG recursive_list.i [2022-02-20 16:49:41,049 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-20 16:49:41,050 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-20 16:49:41,086 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-20 16:49:41,092 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 [2022-02-20 16:49:41,092 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-20 16:49:41,104 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 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) [2022-02-20 16:49:41,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-02-20 16:49:41,107 INFO L506 BasicCegarLoop]: Found error trace [2022-02-20 16:49:41,107 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-20 16:49:41,108 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-20 16:49:41,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-20 16:49:41,111 INFO L85 PathProgramCache]: Analyzing trace with hash -557630289, now seen corresponding path program 1 times [2022-02-20 16:49:41,118 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-20 16:49:41,118 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276631952] [2022-02-20 16:49:41,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-20 16:49:41,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-20 16:49:41,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-20 16:49:41,293 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-20 16:49:41,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-20 16:49:41,353 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-02-20 16:49:41,354 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-02-20 16:49:41,355 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-02-20 16:49:41,356 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-20 16:49:41,359 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2022-02-20 16:49:41,362 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-20 16:49:41,382 FATAL L489 DefaultTranslator]: Callstack has procedure call flag but succeeding procedure is empty at [CALL] call #t~ret6 := append(~l~0, 1); [2022-02-20 16:49:41,383 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: callstack broken after backtranslation by InlinerBacktranslator at de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.translateProgramExecution(InlinerBacktranslator.java:230) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:216) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:206) at de.uni_freiburg.informatik.ultimate.core.lib.results.CounterExampleResult.getProgramExecutionAsString(CounterExampleResult.java:155) at de.uni_freiburg.informatik.ultimate.core.lib.results.CounterExampleResult.getLongDescription(CounterExampleResult.java:134) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:86) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResultReporter.reportResult(CegarLoopResultReporter.java:141) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.reportLocationResults(TraceAbstractionStarter.java:607) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:182) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:156) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-02-20 16:49:41,390 INFO L158 Benchmark]: Toolchain (without parser) took 916.19ms. Allocated memory was 107.0MB in the beginning and 140.5MB in the end (delta: 33.6MB). Free memory was 78.1MB in the beginning and 79.0MB in the end (delta: -916.6kB). Peak memory consumption was 29.9MB. Max. memory is 16.1GB. [2022-02-20 16:49:41,391 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 107.0MB. Free memory is still 63.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-02-20 16:49:41,392 INFO L158 Benchmark]: CACSL2BoogieTranslator took 249.82ms. Allocated memory was 107.0MB in the beginning and 140.5MB in the end (delta: 33.6MB). Free memory was 77.6MB in the beginning and 115.2MB in the end (delta: -37.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-02-20 16:49:41,393 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.63ms. Allocated memory is still 140.5MB. Free memory was 115.2MB in the beginning and 113.8MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-02-20 16:49:41,394 INFO L158 Benchmark]: Boogie Preprocessor took 33.82ms. Allocated memory is still 140.5MB. Free memory was 113.8MB in the beginning and 112.5MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-02-20 16:49:41,395 INFO L158 Benchmark]: RCFGBuilder took 230.72ms. Allocated memory is still 140.5MB. Free memory was 111.9MB in the beginning and 100.6MB in the end (delta: 11.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-02-20 16:49:41,398 INFO L158 Benchmark]: TraceAbstraction took 360.73ms. Allocated memory is still 140.5MB. Free memory was 100.0MB in the beginning and 79.0MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-02-20 16:49:41,400 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 107.0MB. Free memory is still 63.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 249.82ms. Allocated memory was 107.0MB in the beginning and 140.5MB in the end (delta: 33.6MB). Free memory was 77.6MB in the beginning and 115.2MB in the end (delta: -37.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.63ms. Allocated memory is still 140.5MB. Free memory was 115.2MB in the beginning and 113.8MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 33.82ms. Allocated memory is still 140.5MB. Free memory was 113.8MB in the beginning and 112.5MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 230.72ms. Allocated memory is still 140.5MB. Free memory was 111.9MB in the beginning and 100.6MB in the end (delta: 11.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 360.73ms. Allocated memory is still 140.5MB. Free memory was 100.0MB in the beginning and 79.0MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. 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 - ExceptionOrErrorResult: AssertionError: callstack broken after backtranslation by InlinerBacktranslator de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: callstack broken after backtranslation by InlinerBacktranslator: de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.translateProgramExecution(InlinerBacktranslator.java:230) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-02-20 16:49:41,430 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 Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -ea -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/ldv-regression/recursive_list.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.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 52c76a7df26fca079cfc43e405f2f619070583ff933a68f0bba20f0a9dce8e14 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-03d7b7b [2022-02-20 16:49:43,164 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-20 16:49:43,166 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-20 16:49:43,187 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-20 16:49:43,188 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-20 16:49:43,189 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-20 16:49:43,192 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-20 16:49:43,196 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-20 16:49:43,198 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-20 16:49:43,202 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-20 16:49:43,203 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-20 16:49:43,206 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-20 16:49:43,206 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-20 16:49:43,208 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-20 16:49:43,209 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-20 16:49:43,210 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-20 16:49:43,212 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-20 16:49:43,212 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-20 16:49:43,214 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-20 16:49:43,217 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-20 16:49:43,220 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-20 16:49:43,221 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-20 16:49:43,222 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-20 16:49:43,223 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-20 16:49:43,227 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-02-20 16:49:43,227 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-02-20 16:49:43,227 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-02-20 16:49:43,228 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-02-20 16:49:43,228 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-02-20 16:49:43,229 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-02-20 16:49:43,229 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-02-20 16:49:43,230 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-02-20 16:49:43,230 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-02-20 16:49:43,231 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-02-20 16:49:43,231 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-02-20 16:49:43,232 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-02-20 16:49:43,232 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-02-20 16:49:43,232 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-02-20 16:49:43,232 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-20 16:49:43,233 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-20 16:49:43,233 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-20 16:49:43,234 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-02-20 16:49:43,256 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-20 16:49:43,257 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-20 16:49:43,258 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-20 16:49:43,258 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-20 16:49:43,258 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-20 16:49:43,259 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-20 16:49:43,259 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-20 16:49:43,260 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-20 16:49:43,260 INFO L138 SettingsManager]: * Use SBE=true [2022-02-20 16:49:43,260 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-20 16:49:43,261 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-20 16:49:43,261 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-20 16:49:43,261 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-20 16:49:43,261 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-20 16:49:43,261 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-20 16:49:43,261 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-20 16:49:43,262 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-02-20 16:49:43,262 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-02-20 16:49:43,262 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-02-20 16:49:43,262 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-20 16:49:43,262 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-20 16:49:43,262 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-20 16:49:43,262 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-20 16:49:43,263 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-20 16:49:43,263 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-20 16:49:43,263 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-20 16:49:43,263 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-20 16:49:43,270 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-20 16:49:43,270 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-20 16:49:43,270 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-20 16:49:43,270 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-02-20 16:49:43,271 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-02-20 16:49:43,271 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-20 16:49:43,271 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-02-20 16:49:43,271 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-20 16:49:43,271 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-02-20 16:49:43,272 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 52c76a7df26fca079cfc43e405f2f619070583ff933a68f0bba20f0a9dce8e14 [2022-02-20 16:49:43,548 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-20 16:49:43,567 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-20 16:49:43,568 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-20 16:49:43,569 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-20 16:49:43,570 INFO L275 PluginConnector]: CDTParser initialized [2022-02-20 16:49:43,571 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-regression/recursive_list.i [2022-02-20 16:49:43,626 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b13671be7/11a5926a799049ab86fecf7f265d72cb/FLAG7c688a37e [2022-02-20 16:49:43,945 INFO L306 CDTParser]: Found 1 translation units. [2022-02-20 16:49:43,945 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/recursive_list.i [2022-02-20 16:49:43,950 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b13671be7/11a5926a799049ab86fecf7f265d72cb/FLAG7c688a37e [2022-02-20 16:49:44,419 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b13671be7/11a5926a799049ab86fecf7f265d72cb [2022-02-20 16:49:44,421 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-20 16:49:44,422 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-02-20 16:49:44,424 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-20 16:49:44,425 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-20 16:49:44,427 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-20 16:49:44,428 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 04:49:44" (1/1) ... [2022-02-20 16:49:44,429 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f55d794 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:49:44, skipping insertion in model container [2022-02-20 16:49:44,430 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 04:49:44" (1/1) ... [2022-02-20 16:49:44,435 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-20 16:49:44,445 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-20 16:49:44,522 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/ldv-regression/recursive_list.i[409,422] [2022-02-20 16:49:44,535 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-20 16:49:44,545 INFO L203 MainTranslator]: Completed pre-run [2022-02-20 16:49:44,585 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/ldv-regression/recursive_list.i[409,422] [2022-02-20 16:49:44,589 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-20 16:49:44,600 INFO L208 MainTranslator]: Completed translation [2022-02-20 16:49:44,600 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:49:44 WrapperNode [2022-02-20 16:49:44,600 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-20 16:49:44,601 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-20 16:49:44,602 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-20 16:49:44,602 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-20 16:49:44,606 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:49:44" (1/1) ... [2022-02-20 16:49:44,614 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:49:44" (1/1) ... [2022-02-20 16:49:44,632 INFO L137 Inliner]: procedures = 21, calls = 21, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 52 [2022-02-20 16:49:44,633 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-20 16:49:44,633 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-20 16:49:44,633 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-20 16:49:44,633 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-20 16:49:44,638 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:49:44" (1/1) ... [2022-02-20 16:49:44,638 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:49:44" (1/1) ... [2022-02-20 16:49:44,640 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:49:44" (1/1) ... [2022-02-20 16:49:44,641 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:49:44" (1/1) ... [2022-02-20 16:49:44,647 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:49:44" (1/1) ... [2022-02-20 16:49:44,648 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:49:44" (1/1) ... [2022-02-20 16:49:44,649 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:49:44" (1/1) ... [2022-02-20 16:49:44,651 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-20 16:49:44,651 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-20 16:49:44,651 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-20 16:49:44,652 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-20 16:49:44,652 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:49:44" (1/1) ... [2022-02-20 16:49:44,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-20 16:49:44,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-20 16:49:44,672 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) [2022-02-20 16:49:44,675 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 [2022-02-20 16:49:44,696 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-02-20 16:49:44,696 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-20 16:49:44,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-02-20 16:49:44,697 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-02-20 16:49:44,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-02-20 16:49:44,697 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-02-20 16:49:44,697 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-02-20 16:49:44,697 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-20 16:49:44,697 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-20 16:49:44,698 INFO L130 BoogieDeclarations]: Found specification of procedure append [2022-02-20 16:49:44,698 INFO L138 BoogieDeclarations]: Found implementation of procedure append [2022-02-20 16:49:44,698 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-20 16:49:44,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-02-20 16:49:44,778 INFO L234 CfgBuilder]: Building ICFG [2022-02-20 16:49:44,780 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-20 16:49:44,986 INFO L275 CfgBuilder]: Performing block encoding [2022-02-20 16:49:44,993 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-20 16:49:44,993 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-02-20 16:49:44,995 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 04:49:44 BoogieIcfgContainer [2022-02-20 16:49:44,995 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-20 16:49:45,002 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-20 16:49:45,002 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-20 16:49:45,005 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-20 16:49:45,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.02 04:49:44" (1/3) ... [2022-02-20 16:49:45,006 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22d6733c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 04:49:45, skipping insertion in model container [2022-02-20 16:49:45,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:49:44" (2/3) ... [2022-02-20 16:49:45,007 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22d6733c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 04:49:45, skipping insertion in model container [2022-02-20 16:49:45,007 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 04:49:44" (3/3) ... [2022-02-20 16:49:45,029 INFO L111 eAbstractionObserver]: Analyzing ICFG recursive_list.i [2022-02-20 16:49:45,033 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-20 16:49:45,039 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-20 16:49:45,079 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-20 16:49:45,086 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 [2022-02-20 16:49:45,087 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-20 16:49:45,100 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 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) [2022-02-20 16:49:45,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-02-20 16:49:45,104 INFO L506 BasicCegarLoop]: Found error trace [2022-02-20 16:49:45,104 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-20 16:49:45,105 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-20 16:49:45,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-20 16:49:45,108 INFO L85 PathProgramCache]: Analyzing trace with hash -557630289, now seen corresponding path program 1 times [2022-02-20 16:49:45,117 INFO L126 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-02-20 16:49:45,118 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1118699338] [2022-02-20 16:49:45,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-20 16:49:45,119 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-02-20 16:49:45,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-02-20 16:49:45,121 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-02-20 16:49:45,125 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-02-20 16:49:45,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-20 16:49:45,390 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-20 16:49:45,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-20 16:49:45,524 INFO L138 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2022-02-20 16:49:45,525 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-02-20 16:49:45,526 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-02-20 16:49:45,570 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-02-20 16:49:45,729 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-02-20 16:49:45,732 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2022-02-20 16:49:45,735 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-20 16:49:45,748 FATAL L489 DefaultTranslator]: Callstack has procedure call flag but succeeding procedure is empty at [CALL] call #t~ret6 := append(~l~0, 1bv32); [2022-02-20 16:49:45,749 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: callstack broken after backtranslation by InlinerBacktranslator at de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.translateProgramExecution(InlinerBacktranslator.java:230) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:216) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:206) at de.uni_freiburg.informatik.ultimate.core.lib.results.CounterExampleResult.getProgramExecutionAsString(CounterExampleResult.java:155) at de.uni_freiburg.informatik.ultimate.core.lib.results.CounterExampleResult.getLongDescription(CounterExampleResult.java:134) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:86) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResultReporter.reportResult(CegarLoopResultReporter.java:141) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.reportLocationResults(TraceAbstractionStarter.java:607) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:182) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:156) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-02-20 16:49:45,754 INFO L158 Benchmark]: Toolchain (without parser) took 1331.96ms. Allocated memory was 56.6MB in the beginning and 69.2MB in the end (delta: 12.6MB). Free memory was 35.4MB in the beginning and 32.8MB in the end (delta: 2.6MB). Peak memory consumption was 15.1MB. Max. memory is 16.1GB. [2022-02-20 16:49:45,755 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 56.6MB. Free memory was 38.3MB in the beginning and 38.2MB in the end (delta: 39.2kB). There was no memory consumed. Max. memory is 16.1GB. [2022-02-20 16:49:45,756 INFO L158 Benchmark]: CACSL2BoogieTranslator took 176.24ms. Allocated memory is still 56.6MB. Free memory was 35.2MB in the beginning and 39.5MB in the end (delta: -4.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-02-20 16:49:45,756 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.23ms. Allocated memory is still 56.6MB. Free memory was 39.3MB in the beginning and 37.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-02-20 16:49:45,757 INFO L158 Benchmark]: Boogie Preprocessor took 17.69ms. Allocated memory is still 56.6MB. Free memory was 37.5MB in the beginning and 36.1MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-02-20 16:49:45,757 INFO L158 Benchmark]: RCFGBuilder took 344.00ms. Allocated memory is still 56.6MB. Free memory was 36.1MB in the beginning and 24.6MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-02-20 16:49:45,757 INFO L158 Benchmark]: TraceAbstraction took 751.10ms. Allocated memory is still 69.2MB. Free memory was 52.0MB in the beginning and 32.8MB in the end (delta: 19.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-02-20 16:49:45,760 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 56.6MB. Free memory was 38.3MB in the beginning and 38.2MB in the end (delta: 39.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 176.24ms. Allocated memory is still 56.6MB. Free memory was 35.2MB in the beginning and 39.5MB in the end (delta: -4.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.23ms. Allocated memory is still 56.6MB. Free memory was 39.3MB in the beginning and 37.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 17.69ms. Allocated memory is still 56.6MB. Free memory was 37.5MB in the beginning and 36.1MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 344.00ms. Allocated memory is still 56.6MB. Free memory was 36.1MB in the beginning and 24.6MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 751.10ms. Allocated memory is still 69.2MB. Free memory was 52.0MB in the beginning and 32.8MB in the end (delta: 19.2MB). Peak memory consumption was 18.9MB. 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 - ExceptionOrErrorResult: AssertionError: callstack broken after backtranslation by InlinerBacktranslator de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: callstack broken after backtranslation by InlinerBacktranslator: de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.translateProgramExecution(InlinerBacktranslator.java:230) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-02-20 16:49:45,792 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: AssertionError: callstack broken after backtranslation by InlinerBacktranslator