/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -tc ../../../trunk/examples/toolchains/SifaC.xml --sifa.abstract.domain OctagonDomain -i ../sv-benchmarks/c/list-simple/dll2n_prepend_equal.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-31 11:17:10,743 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-31 11:17:10,744 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-31 11:17:10,780 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-03-31 11:17:10,780 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-03-31 11:17:10,781 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-03-31 11:17:10,782 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-03-31 11:17:10,784 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-03-31 11:17:10,787 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-03-31 11:17:10,788 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-03-31 11:17:10,789 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-03-31 11:17:10,790 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-03-31 11:17:10,790 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-03-31 11:17:10,791 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-03-31 11:17:10,792 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-03-31 11:17:10,793 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-03-31 11:17:10,793 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-03-31 11:17:10,794 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-03-31 11:17:10,795 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-03-31 11:17:10,796 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-03-31 11:17:10,797 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-03-31 11:17:10,798 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-03-31 11:17:10,799 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-03-31 11:17:10,800 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-03-31 11:17:10,803 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-03-31 11:17:10,803 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-03-31 11:17:10,803 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-03-31 11:17:10,804 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-03-31 11:17:10,804 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-03-31 11:17:10,805 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-03-31 11:17:10,805 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-03-31 11:17:10,806 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-03-31 11:17:10,807 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-03-31 11:17:10,807 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-03-31 11:17:10,808 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-03-31 11:17:10,809 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-03-31 11:17:10,809 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-03-31 11:17:10,810 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-03-31 11:17:10,810 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-31 11:17:10,811 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-31 11:17:10,811 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-31 11:17:10,812 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-03-31 11:17:10,832 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-31 11:17:10,832 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-31 11:17:10,832 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-31 11:17:10,832 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-31 11:17:10,833 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-31 11:17:10,833 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-31 11:17:10,833 INFO L138 SettingsManager]: * User list type=DISABLED [2023-03-31 11:17:10,833 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-03-31 11:17:10,833 INFO L138 SettingsManager]: * Explicit value domain=true [2023-03-31 11:17:10,834 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-03-31 11:17:10,834 INFO L138 SettingsManager]: * Octagon Domain=false [2023-03-31 11:17:10,834 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-03-31 11:17:10,834 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-03-31 11:17:10,834 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-03-31 11:17:10,834 INFO L138 SettingsManager]: * Interval Domain=false [2023-03-31 11:17:10,835 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-03-31 11:17:10,835 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-03-31 11:17:10,835 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-03-31 11:17:10,835 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-31 11:17:10,836 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-31 11:17:10,836 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-31 11:17:10,836 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-31 11:17:10,836 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-31 11:17:10,836 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-31 11:17:10,836 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-31 11:17:10,837 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-31 11:17:10,837 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-31 11:17:10,837 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-31 11:17:10,837 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-31 11:17:10,837 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-31 11:17:10,837 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-31 11:17:10,838 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-31 11:17:10,838 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 11:17:10,838 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-31 11:17:10,838 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-03-31 11:17:10,838 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-31 11:17:10,839 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-31 11:17:10,839 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-03-31 11:17:10,839 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-31 11:17:10,839 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-31 11:17:10,839 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-03-31 11:17:10,839 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-03-31 11:17:11,061 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-31 11:17:11,077 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-31 11:17:11,079 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-31 11:17:11,080 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-31 11:17:11,080 INFO L275 PluginConnector]: CDTParser initialized [2023-03-31 11:17:11,081 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-simple/dll2n_prepend_equal.i [2023-03-31 11:17:12,129 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-31 11:17:12,426 INFO L351 CDTParser]: Found 1 translation units. [2023-03-31 11:17:12,426 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-simple/dll2n_prepend_equal.i [2023-03-31 11:17:12,442 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2325c91a7/531864adc86a41e8908d71d0118e2a83/FLAGb5c08a7ec [2023-03-31 11:17:12,458 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2325c91a7/531864adc86a41e8908d71d0118e2a83 [2023-03-31 11:17:12,462 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-31 11:17:12,463 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-31 11:17:12,466 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-31 11:17:12,466 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-31 11:17:12,469 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-31 11:17:12,470 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 11:17:12" (1/1) ... [2023-03-31 11:17:12,471 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36e638f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:17:12, skipping insertion in model container [2023-03-31 11:17:12,471 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 11:17:12" (1/1) ... [2023-03-31 11:17:12,478 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-31 11:17:12,519 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-31 11:17:12,760 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-simple/dll2n_prepend_equal.i[24361,24374] [2023-03-31 11:17:12,763 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 11:17:12,772 INFO L203 MainTranslator]: Completed pre-run [2023-03-31 11:17:12,826 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-simple/dll2n_prepend_equal.i[24361,24374] [2023-03-31 11:17:12,827 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 11:17:12,848 INFO L208 MainTranslator]: Completed translation [2023-03-31 11:17:12,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:17:12 WrapperNode [2023-03-31 11:17:12,849 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-31 11:17:12,850 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-31 11:17:12,850 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-31 11:17:12,850 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-31 11:17:12,858 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:17:12" (1/1) ... [2023-03-31 11:17:12,858 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:17:12" (1/1) ... [2023-03-31 11:17:12,869 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:17:12" (1/1) ... [2023-03-31 11:17:12,869 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:17:12" (1/1) ... [2023-03-31 11:17:12,881 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:17:12" (1/1) ... [2023-03-31 11:17:12,885 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:17:12" (1/1) ... [2023-03-31 11:17:12,887 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:17:12" (1/1) ... [2023-03-31 11:17:12,889 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:17:12" (1/1) ... [2023-03-31 11:17:12,896 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-31 11:17:12,897 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-31 11:17:12,897 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-31 11:17:12,897 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-31 11:17:12,898 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:17:12" (1/1) ... [2023-03-31 11:17:12,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 11:17:12,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 11:17:12,923 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-03-31 11:17:12,924 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-03-31 11:17:12,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-31 11:17:12,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-31 11:17:12,951 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-31 11:17:12,951 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2023-03-31 11:17:12,951 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2023-03-31 11:17:12,951 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2023-03-31 11:17:12,951 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2023-03-31 11:17:12,951 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create [2023-03-31 11:17:12,951 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy [2023-03-31 11:17:12,951 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_prepend [2023-03-31 11:17:12,952 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-31 11:17:12,952 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-31 11:17:12,952 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-31 11:17:12,952 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2023-03-31 11:17:12,953 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2023-03-31 11:17:12,953 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-31 11:17:12,953 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-31 11:17:12,953 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2023-03-31 11:17:12,953 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2023-03-31 11:17:12,953 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2023-03-31 11:17:12,953 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2023-03-31 11:17:12,953 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2023-03-31 11:17:12,953 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2023-03-31 11:17:12,954 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2023-03-31 11:17:12,957 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2023-03-31 11:17:12,957 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2023-03-31 11:17:12,957 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2023-03-31 11:17:12,957 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2023-03-31 11:17:12,957 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2023-03-31 11:17:12,957 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2023-03-31 11:17:12,957 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2023-03-31 11:17:12,957 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2023-03-31 11:17:12,957 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2023-03-31 11:17:12,957 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2023-03-31 11:17:12,958 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2023-03-31 11:17:12,958 INFO L130 BoogieDeclarations]: Found specification of procedure select [2023-03-31 11:17:12,958 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2023-03-31 11:17:12,958 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2023-03-31 11:17:12,958 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2023-03-31 11:17:12,958 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2023-03-31 11:17:12,958 INFO L130 BoogieDeclarations]: Found specification of procedure random [2023-03-31 11:17:12,958 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2023-03-31 11:17:12,958 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2023-03-31 11:17:12,959 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2023-03-31 11:17:12,959 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2023-03-31 11:17:12,959 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2023-03-31 11:17:12,959 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2023-03-31 11:17:12,959 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2023-03-31 11:17:12,959 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2023-03-31 11:17:12,959 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2023-03-31 11:17:12,959 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2023-03-31 11:17:12,959 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2023-03-31 11:17:12,959 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2023-03-31 11:17:12,959 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2023-03-31 11:17:12,959 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2023-03-31 11:17:12,960 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2023-03-31 11:17:12,960 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2023-03-31 11:17:12,960 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2023-03-31 11:17:12,960 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2023-03-31 11:17:12,960 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2023-03-31 11:17:12,960 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2023-03-31 11:17:12,960 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2023-03-31 11:17:12,960 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2023-03-31 11:17:12,960 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2023-03-31 11:17:12,960 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2023-03-31 11:17:12,960 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2023-03-31 11:17:12,960 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2023-03-31 11:17:12,960 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2023-03-31 11:17:12,961 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2023-03-31 11:17:12,961 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2023-03-31 11:17:12,961 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2023-03-31 11:17:12,961 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2023-03-31 11:17:12,961 INFO L130 BoogieDeclarations]: Found specification of procedure free [2023-03-31 11:17:12,961 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2023-03-31 11:17:12,961 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2023-03-31 11:17:12,961 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2023-03-31 11:17:12,961 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2023-03-31 11:17:12,962 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2023-03-31 11:17:12,962 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2023-03-31 11:17:12,962 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2023-03-31 11:17:12,962 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2023-03-31 11:17:12,962 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-03-31 11:17:12,962 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2023-03-31 11:17:12,962 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2023-03-31 11:17:12,962 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2023-03-31 11:17:12,962 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2023-03-31 11:17:12,963 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2023-03-31 11:17:12,963 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2023-03-31 11:17:12,963 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2023-03-31 11:17:12,963 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2023-03-31 11:17:12,963 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2023-03-31 11:17:12,963 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2023-03-31 11:17:12,963 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2023-03-31 11:17:12,963 INFO L130 BoogieDeclarations]: Found specification of procedure system [2023-03-31 11:17:12,963 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2023-03-31 11:17:12,963 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2023-03-31 11:17:12,963 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2023-03-31 11:17:12,963 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2023-03-31 11:17:12,964 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2023-03-31 11:17:12,964 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2023-03-31 11:17:12,964 INFO L130 BoogieDeclarations]: Found specification of procedure div [2023-03-31 11:17:12,964 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2023-03-31 11:17:12,964 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2023-03-31 11:17:12,964 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2023-03-31 11:17:12,964 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2023-03-31 11:17:12,964 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2023-03-31 11:17:12,964 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2023-03-31 11:17:12,964 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2023-03-31 11:17:12,964 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2023-03-31 11:17:12,964 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2023-03-31 11:17:12,965 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2023-03-31 11:17:12,965 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2023-03-31 11:17:12,965 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2023-03-31 11:17:12,965 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2023-03-31 11:17:12,965 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2023-03-31 11:17:12,965 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2023-03-31 11:17:12,965 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2023-03-31 11:17:12,965 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2023-03-31 11:17:12,965 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2023-03-31 11:17:12,965 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2023-03-31 11:17:12,966 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2023-03-31 11:17:12,966 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2023-03-31 11:17:12,966 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2023-03-31 11:17:12,966 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-03-31 11:17:12,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-03-31 11:17:12,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-31 11:17:12,966 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create [2023-03-31 11:17:12,966 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy [2023-03-31 11:17:12,967 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-03-31 11:17:12,967 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-31 11:17:12,967 INFO L130 BoogieDeclarations]: Found specification of procedure dll_prepend [2023-03-31 11:17:12,967 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-31 11:17:12,967 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-03-31 11:17:12,967 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-03-31 11:17:12,967 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-31 11:17:12,967 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-31 11:17:12,967 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-31 11:17:12,967 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-31 11:17:13,183 INFO L236 CfgBuilder]: Building ICFG [2023-03-31 11:17:13,184 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-31 11:17:13,284 INFO L771 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2023-03-31 11:17:13,449 INFO L277 CfgBuilder]: Performing block encoding [2023-03-31 11:17:13,514 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-31 11:17:13,514 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-03-31 11:17:13,516 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 11:17:13 BoogieIcfgContainer [2023-03-31 11:17:13,516 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-31 11:17:13,521 INFO L113 PluginConnector]: ------------------------Sifa---------------------------- [2023-03-31 11:17:13,521 INFO L271 PluginConnector]: Initializing Sifa... [2023-03-31 11:17:13,521 INFO L275 PluginConnector]: Sifa initialized [2023-03-31 11:17:13,522 INFO L185 PluginConnector]: Executing the observer SifaObserver from plugin Sifa for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 11:17:13" (1/1) ... [2023-03-31 11:17:13,522 INFO L79 SifaObserver]: LogSizeWrapperFluid Intern Fluid=SizeLimitFluid ♦ Abstract Domain=OctagonDomain ♦ Max. Parallel Octagon=2 ♦ Fluid=SizeLimitFluid ♦ Max. Parallel Explicit Values=2 ♦ Max. Parallel Intervals=2 ♦ Loop Summarizer=FixpointLoopSummarizer ♦ CompoundDomain Intern Domains=ExplicitValueDomain;IntervalDomain ♦ Call Summarizer=TopInputCallSummarizer ♦ Xnf Conversion Technique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION ♦ SizeLimitFluid Max. Disjunctions=8 ♦ Simplification Technique=POLY_PAC ♦ Max. Parallel Equality=2 ♦ SizeLimitFluid Max. DAG Size=-1 [2023-03-31 11:17:13,554 INFO L159 IcfgInterpreter]: Started Sifa with 1 locations of interest [2023-03-31 11:17:13,554 INFO L166 IcfgInterpreter]: Building call graph [2023-03-31 11:17:13,559 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-03-31 11:17:13,565 INFO L176 IcfgInterpreter]: Starting interpretation [2023-03-31 11:17:13,566 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-03-31 11:17:13,677 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 42 for LOIs [2023-03-31 11:17:14,867 INFO L180 IcfgInterpreter]: Interpretation finished [2023-03-31 11:17:14,880 INFO L104 SifaObserver]: ✘ Some error locations might be reachable, see reported results. [2023-03-31 11:17:14,880 INFO L132 PluginConnector]: ------------------------ END Sifa---------------------------- [2023-03-31 11:17:14,881 INFO L158 Benchmark]: Toolchain (without parser) took 2417.27ms. Allocated memory is still 371.2MB. Free memory was 333.2MB in the beginning and 172.2MB in the end (delta: 161.0MB). Peak memory consumption was 162.5MB. Max. memory is 8.0GB. [2023-03-31 11:17:14,881 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 221.2MB. Free memory is still 171.6MB. There was no memory consumed. Max. memory is 8.0GB. [2023-03-31 11:17:14,882 INFO L158 Benchmark]: CACSL2BoogieTranslator took 382.78ms. Allocated memory is still 371.2MB. Free memory was 332.8MB in the beginning and 315.5MB in the end (delta: 17.3MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2023-03-31 11:17:14,883 INFO L158 Benchmark]: Boogie Preprocessor took 46.50ms. Allocated memory is still 371.2MB. Free memory was 315.5MB in the beginning and 312.8MB in the end (delta: 2.7MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-03-31 11:17:14,883 INFO L158 Benchmark]: RCFGBuilder took 623.27ms. Allocated memory is still 371.2MB. Free memory was 312.4MB in the beginning and 283.5MB in the end (delta: 29.0MB). Peak memory consumption was 29.4MB. Max. memory is 8.0GB. [2023-03-31 11:17:14,887 INFO L158 Benchmark]: Sifa took 1359.31ms. Allocated memory is still 371.2MB. Free memory was 283.5MB in the beginning and 172.2MB in the end (delta: 111.3MB). Peak memory consumption was 112.2MB. Max. memory is 8.0GB. [2023-03-31 11:17:14,889 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 221.2MB. Free memory is still 171.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 382.78ms. Allocated memory is still 371.2MB. Free memory was 332.8MB in the beginning and 315.5MB in the end (delta: 17.3MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * Boogie Preprocessor took 46.50ms. Allocated memory is still 371.2MB. Free memory was 315.5MB in the beginning and 312.8MB in the end (delta: 2.7MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 623.27ms. Allocated memory is still 371.2MB. Free memory was 312.4MB in the beginning and 283.5MB in the end (delta: 29.0MB). Peak memory consumption was 29.4MB. Max. memory is 8.0GB. * Sifa took 1359.31ms. Allocated memory is still 371.2MB. Free memory was 283.5MB in the beginning and 172.2MB in the end (delta: 111.3MB). Peak memory consumption was 112.2MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.sifa: - StatisticsResult: Symbolic Interpretation with Fluid Abstractions OVERALL_TIME: 1.3s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 2, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 7, DAG_INTERPRETER_EARLY_EXITS: 1, TOOLS_POST_APPLICATIONS: 34, TOOLS_POST_TIME: 0.7s, TOOLS_POST_CALL_APPLICATIONS: 9, TOOLS_POST_CALL_TIME: 0.1s, TOOLS_POST_RETURN_APPLICATIONS: 8, TOOLS_POST_RETURN_TIME: 0.2s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 51, TOOLS_QUANTIFIERELIM_TIME: 1.0s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.1s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 59, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 7, DOMAIN_JOIN_TIME: 0.1s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 2, DOMAIN_WIDEN_TIME: 0.1s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 4, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 7, DOMAIN_ISBOTTOM_TIME: 0.1s, LOOP_SUMMARIZER_APPLICATIONS: 2, LOOP_SUMMARIZER_CACHE_MISSES: 2, LOOP_SUMMARIZER_OVERALL_TIME: 0.5s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 0.5s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 4, CALL_SUMMARIZER_APPLICATIONS: 8, CALL_SUMMARIZER_CACHE_MISSES: 5, CALL_SUMMARIZER_OVERALL_TIME: 0.4s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.4s, PROCEDURE_GRAPH_BUILDER_TIME: 0.0s, PATH_EXPR_TIME: 0.0s, REGEX_TO_DAG_TIME: 0.0s, DAG_COMPRESSION_TIME: 0.0s, DAG_COMPRESSION_PROCESSED_NODES: 127, DAG_COMPRESSION_RETAINED_NODES: 59 - UnprovableResult [Line: 638]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Over-approximation of reachable states at this location is 62#(and (= main_~data~0 1) (<= 1 |#StackHeapBarrier|) (<= 3 (+ |main_~#s~0.base| |#StackHeapBarrier|)) (<= 1 (+ main_~count~0 |#StackHeapBarrier|)) (<= 2 (+ |main_~#s~0.base| main_~count~0)) (= |main_~#s~0.offset| 0) (<= 0 main_~count~0) (<= 2 |main_~#s~0.base|) (= main_~len~0 2) (= |#NULL.offset| 0) (<= (+ |#StackHeapBarrier| 1) |main_~#s~0.base|) (= |#NULL.base| 0)). Possible FailurePath: RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-03-31 11:17:14,911 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...