/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/AutomizerC.xml --sifa.abstract.domain IntervalDomain -i ../sv-benchmarks/c/loops/bubble_sort-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-31 22:57:11,818 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-31 22:57:11,819 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-31 22:57:11,853 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-03-31 22:57:11,854 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-03-31 22:57:11,854 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-03-31 22:57:11,855 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-03-31 22:57:11,856 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-03-31 22:57:11,857 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-03-31 22:57:11,857 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-03-31 22:57:11,858 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-03-31 22:57:11,859 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-03-31 22:57:11,859 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-03-31 22:57:11,859 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-03-31 22:57:11,860 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-03-31 22:57:11,861 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-03-31 22:57:11,861 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-03-31 22:57:11,863 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-03-31 22:57:11,863 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-03-31 22:57:11,864 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-03-31 22:57:11,865 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-03-31 22:57:11,881 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-03-31 22:57:11,882 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-03-31 22:57:11,883 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-03-31 22:57:11,885 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-03-31 22:57:11,885 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-03-31 22:57:11,885 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-03-31 22:57:11,885 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-03-31 22:57:11,886 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-03-31 22:57:11,886 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-03-31 22:57:11,886 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-03-31 22:57:11,887 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-03-31 22:57:11,887 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-03-31 22:57:11,888 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-03-31 22:57:11,888 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-03-31 22:57:11,888 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-03-31 22:57:11,889 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-03-31 22:57:11,889 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-03-31 22:57:11,889 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-31 22:57:11,890 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-31 22:57:11,890 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-31 22:57:11,893 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 22:57:11,908 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-31 22:57:11,908 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-31 22:57:11,909 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-31 22:57:11,909 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-31 22:57:11,910 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-31 22:57:11,910 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-31 22:57:11,910 INFO L138 SettingsManager]: * User list type=DISABLED [2023-03-31 22:57:11,910 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-03-31 22:57:11,910 INFO L138 SettingsManager]: * Explicit value domain=true [2023-03-31 22:57:11,911 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-03-31 22:57:11,911 INFO L138 SettingsManager]: * Octagon Domain=false [2023-03-31 22:57:11,911 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-03-31 22:57:11,911 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-03-31 22:57:11,911 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-03-31 22:57:11,912 INFO L138 SettingsManager]: * Interval Domain=false [2023-03-31 22:57:11,912 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-03-31 22:57:11,912 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-03-31 22:57:11,912 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-03-31 22:57:11,912 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-31 22:57:11,913 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-31 22:57:11,913 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-31 22:57:11,913 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-31 22:57:11,913 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-31 22:57:11,913 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-31 22:57:11,913 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-31 22:57:11,913 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-31 22:57:11,914 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-31 22:57:11,914 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-31 22:57:11,914 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-31 22:57:11,914 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-31 22:57:11,914 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-31 22:57:11,914 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-31 22:57:11,914 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 22:57:11,915 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-31 22:57:11,915 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-03-31 22:57:11,915 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-31 22:57:11,915 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-31 22:57:11,915 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-03-31 22:57:11,916 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-31 22:57:11,916 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-31 22:57:11,916 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-03-31 22:57:11,916 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> IntervalDomain [2023-03-31 22:57:12,092 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-31 22:57:12,109 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-31 22:57:12,111 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-31 22:57:12,112 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-31 22:57:12,112 INFO L275 PluginConnector]: CDTParser initialized [2023-03-31 22:57:12,113 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops/bubble_sort-2.i [2023-03-31 22:57:13,061 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-31 22:57:13,254 INFO L351 CDTParser]: Found 1 translation units. [2023-03-31 22:57:13,254 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/bubble_sort-2.i [2023-03-31 22:57:13,261 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78d08621f/faa502d566b24180bc014fb6dac5e07b/FLAG849c1b059 [2023-03-31 22:57:13,633 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78d08621f/faa502d566b24180bc014fb6dac5e07b [2023-03-31 22:57:13,637 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-31 22:57:13,638 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-31 22:57:13,638 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-31 22:57:13,638 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-31 22:57:13,643 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-31 22:57:13,643 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 10:57:13" (1/1) ... [2023-03-31 22:57:13,644 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@624d7254 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:57:13, skipping insertion in model container [2023-03-31 22:57:13,645 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 10:57:13" (1/1) ... [2023-03-31 22:57:13,650 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-31 22:57:13,684 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-31 22:57:13,771 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/loops/bubble_sort-2.i[1830,1843] [2023-03-31 22:57:13,834 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 22:57:13,858 INFO L203 MainTranslator]: Completed pre-run [2023-03-31 22:57:13,866 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/loops/bubble_sort-2.i[1830,1843] [2023-03-31 22:57:13,909 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 22:57:13,940 INFO L208 MainTranslator]: Completed translation [2023-03-31 22:57:13,941 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:57:13 WrapperNode [2023-03-31 22:57:13,941 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-31 22:57:13,941 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-31 22:57:13,942 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-31 22:57:13,942 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-31 22:57:13,957 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:57:13" (1/1) ... [2023-03-31 22:57:13,957 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:57:13" (1/1) ... [2023-03-31 22:57:13,967 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:57:13" (1/1) ... [2023-03-31 22:57:13,967 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:57:13" (1/1) ... [2023-03-31 22:57:13,988 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:57:13" (1/1) ... [2023-03-31 22:57:13,994 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:57:13" (1/1) ... [2023-03-31 22:57:13,996 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:57:13" (1/1) ... [2023-03-31 22:57:13,998 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:57:13" (1/1) ... [2023-03-31 22:57:14,002 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-31 22:57:14,002 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-31 22:57:14,003 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-31 22:57:14,003 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-31 22:57:14,003 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:57:13" (1/1) ... [2023-03-31 22:57:14,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 22:57:14,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 22:57:14,042 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 22:57:14,047 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 22:57:14,071 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-31 22:57:14,071 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-31 22:57:14,071 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-31 22:57:14,071 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2023-03-31 22:57:14,071 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect [2023-03-31 22:57:14,072 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2023-03-31 22:57:14,072 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_del [2023-03-31 22:57:14,072 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2023-03-31 22:57:14,072 INFO L138 BoogieDeclarations]: Found implementation of procedure list_move [2023-03-31 22:57:14,072 INFO L138 BoogieDeclarations]: Found implementation of procedure gl_insert [2023-03-31 22:57:14,072 INFO L138 BoogieDeclarations]: Found implementation of procedure gl_read [2023-03-31 22:57:14,072 INFO L138 BoogieDeclarations]: Found implementation of procedure gl_destroy [2023-03-31 22:57:14,072 INFO L138 BoogieDeclarations]: Found implementation of procedure val_from_node [2023-03-31 22:57:14,072 INFO L138 BoogieDeclarations]: Found implementation of procedure gl_sort_pass [2023-03-31 22:57:14,072 INFO L138 BoogieDeclarations]: Found implementation of procedure gl_sort [2023-03-31 22:57:14,072 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-31 22:57:14,073 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-31 22:57:14,073 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-31 22:57:14,073 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2023-03-31 22:57:14,073 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2023-03-31 22:57:14,073 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-31 22:57:14,073 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-31 22:57:14,073 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2023-03-31 22:57:14,073 INFO L130 BoogieDeclarations]: Found specification of procedure free [2023-03-31 22:57:14,073 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-03-31 22:57:14,073 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2023-03-31 22:57:14,073 INFO L130 BoogieDeclarations]: Found specification of procedure inspect [2023-03-31 22:57:14,074 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-03-31 22:57:14,074 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2023-03-31 22:57:14,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-03-31 22:57:14,074 INFO L130 BoogieDeclarations]: Found specification of procedure __list_del [2023-03-31 22:57:14,074 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2023-03-31 22:57:14,074 INFO L130 BoogieDeclarations]: Found specification of procedure list_move [2023-03-31 22:57:14,074 INFO L130 BoogieDeclarations]: Found specification of procedure gl_insert [2023-03-31 22:57:14,074 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-03-31 22:57:14,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-31 22:57:14,074 INFO L130 BoogieDeclarations]: Found specification of procedure gl_read [2023-03-31 22:57:14,074 INFO L130 BoogieDeclarations]: Found specification of procedure gl_destroy [2023-03-31 22:57:14,075 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-31 22:57:14,075 INFO L130 BoogieDeclarations]: Found specification of procedure val_from_node [2023-03-31 22:57:14,075 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-31 22:57:14,075 INFO L130 BoogieDeclarations]: Found specification of procedure gl_sort_pass [2023-03-31 22:57:14,075 INFO L130 BoogieDeclarations]: Found specification of procedure gl_sort [2023-03-31 22:57:14,075 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-31 22:57:14,075 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-31 22:57:14,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-31 22:57:14,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-03-31 22:57:14,075 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-31 22:57:14,202 INFO L236 CfgBuilder]: Building ICFG [2023-03-31 22:57:14,204 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-31 22:57:14,483 INFO L771 $ProcedureCfgBuilder]: dead code at ProgramPoint failFINAL: assume true; [2023-03-31 22:57:14,680 INFO L277 CfgBuilder]: Performing block encoding [2023-03-31 22:57:14,780 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-31 22:57:14,780 INFO L302 CfgBuilder]: Removed 23 assume(true) statements. [2023-03-31 22:57:14,784 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 10:57:14 BoogieIcfgContainer [2023-03-31 22:57:14,784 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-31 22:57:14,786 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-31 22:57:14,787 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-31 22:57:14,789 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-31 22:57:14,789 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.03 10:57:13" (1/3) ... [2023-03-31 22:57:14,790 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c1ffb27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 10:57:14, skipping insertion in model container [2023-03-31 22:57:14,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:57:13" (2/3) ... [2023-03-31 22:57:14,790 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c1ffb27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 10:57:14, skipping insertion in model container [2023-03-31 22:57:14,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 10:57:14" (3/3) ... [2023-03-31 22:57:14,791 INFO L112 eAbstractionObserver]: Analyzing ICFG bubble_sort-2.i [2023-03-31 22:57:14,803 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-31 22:57:14,803 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-03-31 22:57:14,856 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-31 22:57:14,860 INFO L357 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=FINITE_AUTOMATA, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@c9f3f45, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-03-31 22:57:14,860 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-03-31 22:57:14,863 INFO L276 IsEmpty]: Start isEmpty. Operand has 127 states, 79 states have (on average 1.5822784810126582) internal successors, (125), 98 states have internal predecessors, (125), 33 states have call successors, (33), 14 states have call predecessors, (33), 13 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-03-31 22:57:14,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-03-31 22:57:14,867 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 22:57:14,868 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 22:57:14,868 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 22:57:14,871 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 22:57:14,872 INFO L85 PathProgramCache]: Analyzing trace with hash -821980734, now seen corresponding path program 1 times [2023-03-31 22:57:14,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 22:57:14,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249903520] [2023-03-31 22:57:14,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 22:57:14,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 22:57:14,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 22:57:15,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 22:57:15,011 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 22:57:15,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249903520] [2023-03-31 22:57:15,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249903520] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 22:57:15,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 22:57:15,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-03-31 22:57:15,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411352670] [2023-03-31 22:57:15,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 22:57:15,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-03-31 22:57:15,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 22:57:15,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-03-31 22:57:15,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-03-31 22:57:15,048 INFO L87 Difference]: Start difference. First operand has 127 states, 79 states have (on average 1.5822784810126582) internal successors, (125), 98 states have internal predecessors, (125), 33 states have call successors, (33), 14 states have call predecessors, (33), 13 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-03-31 22:57:15,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 22:57:15,208 INFO L93 Difference]: Finished difference Result 239 states and 335 transitions. [2023-03-31 22:57:15,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-03-31 22:57:15,214 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2023-03-31 22:57:15,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 22:57:15,219 INFO L225 Difference]: With dead ends: 239 [2023-03-31 22:57:15,219 INFO L226 Difference]: Without dead ends: 117 [2023-03-31 22:57:15,222 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-03-31 22:57:15,225 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-31 22:57:15,225 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 124 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-31 22:57:15,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2023-03-31 22:57:15,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2023-03-31 22:57:15,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 73 states have (on average 1.3013698630136987) internal successors, (95), 91 states have internal predecessors, (95), 32 states have call successors, (32), 13 states have call predecessors, (32), 11 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-03-31 22:57:15,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 140 transitions. [2023-03-31 22:57:15,257 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 140 transitions. Word has length 17 [2023-03-31 22:57:15,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 22:57:15,258 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 140 transitions. [2023-03-31 22:57:15,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-03-31 22:57:15,258 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 140 transitions. [2023-03-31 22:57:15,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-03-31 22:57:15,259 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 22:57:15,259 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 22:57:15,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-31 22:57:15,260 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 22:57:15,260 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 22:57:15,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1173714431, now seen corresponding path program 1 times [2023-03-31 22:57:15,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 22:57:15,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30782232] [2023-03-31 22:57:15,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 22:57:15,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 22:57:15,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 22:57:15,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 22:57:15,611 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 22:57:15,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30782232] [2023-03-31 22:57:15,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30782232] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 22:57:15,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 22:57:15,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-03-31 22:57:15,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485602803] [2023-03-31 22:57:15,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 22:57:15,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-03-31 22:57:15,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 22:57:15,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-03-31 22:57:15,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-03-31 22:57:15,615 INFO L87 Difference]: Start difference. First operand 117 states and 140 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 4 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-03-31 22:57:15,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 22:57:15,899 INFO L93 Difference]: Finished difference Result 178 states and 217 transitions. [2023-03-31 22:57:15,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-03-31 22:57:15,900 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 4 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 30 [2023-03-31 22:57:15,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 22:57:15,906 INFO L225 Difference]: With dead ends: 178 [2023-03-31 22:57:15,906 INFO L226 Difference]: Without dead ends: 173 [2023-03-31 22:57:15,909 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-03-31 22:57:15,911 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 254 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-03-31 22:57:15,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [254 Valid, 421 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-03-31 22:57:15,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2023-03-31 22:57:15,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 157. [2023-03-31 22:57:15,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 113 states have (on average 1.336283185840708) internal successors, (151), 130 states have internal predecessors, (151), 32 states have call successors, (32), 14 states have call predecessors, (32), 11 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-03-31 22:57:15,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 196 transitions. [2023-03-31 22:57:15,926 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 196 transitions. Word has length 30 [2023-03-31 22:57:15,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 22:57:15,927 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 196 transitions. [2023-03-31 22:57:15,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 4 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-03-31 22:57:15,928 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 196 transitions. [2023-03-31 22:57:15,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-03-31 22:57:15,928 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 22:57:15,928 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 22:57:15,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-03-31 22:57:15,929 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 22:57:15,929 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 22:57:15,929 INFO L85 PathProgramCache]: Analyzing trace with hash 1641450531, now seen corresponding path program 1 times [2023-03-31 22:57:15,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 22:57:15,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012747539] [2023-03-31 22:57:15,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 22:57:15,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 22:57:16,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-03-31 22:57:16,126 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-03-31 22:57:16,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-03-31 22:57:16,225 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-03-31 22:57:16,226 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-03-31 22:57:16,226 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location failErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-03-31 22:57:16,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-03-31 22:57:16,229 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-03-31 22:57:16,232 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-03-31 22:57:16,254 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.03 10:57:16 BoogieIcfgContainer [2023-03-31 22:57:16,254 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-03-31 22:57:16,254 INFO L158 Benchmark]: Toolchain (without parser) took 2616.66ms. Allocated memory was 190.8MB in the beginning and 284.2MB in the end (delta: 93.3MB). Free memory was 140.2MB in the beginning and 237.9MB in the end (delta: -97.7MB). Peak memory consumption was 149.9MB. Max. memory is 8.0GB. [2023-03-31 22:57:16,255 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 190.8MB. Free memory was 137.3MB in the beginning and 137.2MB in the end (delta: 106.7kB). There was no memory consumed. Max. memory is 8.0GB. [2023-03-31 22:57:16,255 INFO L158 Benchmark]: CACSL2BoogieTranslator took 302.64ms. Allocated memory is still 190.8MB. Free memory was 140.2MB in the beginning and 121.2MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. [2023-03-31 22:57:16,255 INFO L158 Benchmark]: Boogie Preprocessor took 60.45ms. Allocated memory is still 190.8MB. Free memory was 121.2MB in the beginning and 117.1MB in the end (delta: 4.1MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-03-31 22:57:16,255 INFO L158 Benchmark]: RCFGBuilder took 781.52ms. Allocated memory was 190.8MB in the beginning and 284.2MB in the end (delta: 93.3MB). Free memory was 117.1MB in the beginning and 213.2MB in the end (delta: -96.1MB). Peak memory consumption was 22.5MB. Max. memory is 8.0GB. [2023-03-31 22:57:16,256 INFO L158 Benchmark]: TraceAbstraction took 1467.42ms. Allocated memory is still 284.2MB. Free memory was 212.2MB in the beginning and 237.9MB in the end (delta: -25.7MB). Peak memory consumption was 127.4MB. Max. memory is 8.0GB. [2023-03-31 22:57:16,257 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 190.8MB. Free memory was 137.3MB in the beginning and 137.2MB in the end (delta: 106.7kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 302.64ms. Allocated memory is still 190.8MB. Free memory was 140.2MB in the beginning and 121.2MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. * Boogie Preprocessor took 60.45ms. Allocated memory is still 190.8MB. Free memory was 121.2MB in the beginning and 117.1MB in the end (delta: 4.1MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * RCFGBuilder took 781.52ms. Allocated memory was 190.8MB in the beginning and 284.2MB in the end (delta: 93.3MB). Free memory was 117.1MB in the beginning and 213.2MB in the end (delta: -96.1MB). Peak memory consumption was 22.5MB. Max. memory is 8.0GB. * TraceAbstraction took 1467.42ms. Allocated memory is still 284.2MB. Free memory was 212.2MB in the beginning and 237.9MB in the end (delta: -25.7MB). Peak memory consumption was 127.4MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 46]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L52] struct list_head gl_list = {& gl_list, & gl_list}; [L835] struct list_head const *__cil_tmp1 ; [L836] struct list_head const *__cil_tmp2 ; VAL [gl_list={5:0}] [L839] CALL gl_read() VAL [gl_list={5:0}] [L676] int tmp ; [L677] int tmp___0 ; VAL [gl_list={5:0}] [L680] COND TRUE 1 [L683] tmp = __VERIFIER_nondet_int() [L684] CALL gl_insert(tmp) VAL [\old(value)=0, gl_list={5:0}] [L622] struct node *node ; [L623] void *tmp ; [L624] unsigned int __cil_tmp4 ; [L625] unsigned int __cil_tmp5 ; [L626] unsigned int __cil_tmp6 ; [L627] struct list_head *__cil_tmp7 ; [L628] unsigned int __cil_tmp8 ; [L629] unsigned int __cil_tmp9 ; [L630] unsigned int __cil_tmp10 ; [L631] unsigned int __cil_tmp11 ; [L632] unsigned int __cil_tmp12 ; [L633] unsigned int __cil_tmp13 ; [L634] unsigned int __cil_tmp14 ; [L635] unsigned int __cil_tmp15 ; [L638] __cil_tmp4 = (unsigned int )20UL [L639] tmp = malloc(__cil_tmp4) [L640] node = (struct node *)tmp [L642] COND FALSE !(! node) [L649] *((int *)node) = value [L650] __cil_tmp5 = (unsigned int )node [L651] __cil_tmp6 = __cil_tmp5 + 4 [L652] __cil_tmp7 = (struct list_head *)__cil_tmp6 VAL [\old(value)=0, __cil_tmp4=20, __cil_tmp5=1, __cil_tmp6=5, __cil_tmp7={0:5}, gl_list={5:0}, node={4294967297:0}, tmp={4294967297:0}, value=0] [L653] CALL list_add(__cil_tmp7, & gl_list) VAL [gl_list={5:0}, head={5:0}, new={0:5}] [L595] struct list_head *__cil_tmp3 ; [L598] EXPR \read(*head) [L598] __cil_tmp3 = *((struct list_head **)head) [L599] CALL __list_add(new, head, __cil_tmp3) VAL [gl_list={5:0}, new={0:5}, next={5:0}, prev={5:0}] [L567] unsigned int __cil_tmp4 ; [L568] unsigned int __cil_tmp5 ; [L569] unsigned int __cil_tmp6 ; [L570] unsigned int __cil_tmp7 ; [L572] __cil_tmp4 = (unsigned int )next [L573] __cil_tmp5 = __cil_tmp4 + 4 [L574] *((struct list_head **)__cil_tmp5) = new [L575] *((struct list_head **)new) = next [L576] __cil_tmp6 = (unsigned int )new [L577] __cil_tmp7 = __cil_tmp6 + 4 [L578] *((struct list_head **)__cil_tmp7) = prev [L579] *((struct list_head **)prev) = new [L599] RET __list_add(new, head, __cil_tmp3) VAL [__cil_tmp3={5:0}, gl_list={5:0}, head={5:0}, head={5:0}, new={0:5}, new={0:5}] [L653] RET list_add(__cil_tmp7, & gl_list) VAL [\old(value)=0, __cil_tmp4=20, __cil_tmp5=1, __cil_tmp6=5, __cil_tmp7={0:5}, gl_list={5:0}, node={4294967297:0}, tmp={4294967297:0}, value=0] [L656] COND TRUE 1 [L658] __cil_tmp8 = (unsigned int )node [L659] __cil_tmp9 = __cil_tmp8 + 12 [L660] __cil_tmp10 = (unsigned int )node [L661] __cil_tmp11 = __cil_tmp10 + 12 [L662] *((struct list_head **)__cil_tmp9) = (struct list_head *)__cil_tmp11 [L663] __cil_tmp12 = (unsigned int )node [L664] __cil_tmp13 = __cil_tmp12 + 12 [L665] __cil_tmp14 = (unsigned int )node [L666] __cil_tmp15 = __cil_tmp14 + 12 [L667] *((struct list_head **)__cil_tmp13) = (struct list_head *)__cil_tmp15 [L684] RET gl_insert(tmp) VAL [gl_list={5:0}, tmp=0] [L685] tmp___0 = __VERIFIER_nondet_int() [L687] COND FALSE !(\read(tmp___0)) VAL [gl_list={5:0}, tmp=0, tmp___0=0] [L839] RET gl_read() VAL [gl_list={5:0}] [L840] __cil_tmp1 = (struct list_head const *)(& gl_list) VAL [__cil_tmp1={5:0}, gl_list={5:0}] [L841] CALL inspect(__cil_tmp1) VAL [gl_list={5:0}, head={5:0}] [L55] struct node const *node ; [L56] unsigned int __cil_tmp3 ; [L57] struct list_head *__cil_tmp4 ; [L58] unsigned int __cil_tmp5 ; [L59] int __cil_tmp6 ; [L60] unsigned int __cil_tmp7 ; [L61] unsigned int __cil_tmp8 ; [L62] unsigned int __cil_tmp9 ; [L63] struct list_head *__cil_tmp10 ; [L64] unsigned int __cil_tmp11 ; [L65] int __cil_tmp12 ; [L66] unsigned int __cil_tmp13 ; [L67] unsigned int __cil_tmp14 ; [L68] struct list_head *__cil_tmp15 ; [L69] unsigned int __cil_tmp16 ; [L70] struct list_head *__cil_tmp17 ; [L71] unsigned int __cil_tmp18 ; [L72] int __cil_tmp19 ; [L73] unsigned int __cil_tmp20 ; [L74] unsigned int __cil_tmp21 ; [L75] unsigned int __cil_tmp22 ; [L76] struct list_head *__cil_tmp23 ; [L77] unsigned int __cil_tmp24 ; [L78] int __cil_tmp25 ; [L79] struct node *__cil_tmp26 ; [L80] unsigned int __cil_tmp27 ; [L81] unsigned int __cil_tmp28 ; [L82] struct list_head *__cil_tmp29 ; [L83] unsigned long __cil_tmp30 ; [L84] char *__cil_tmp31 ; [L85] char *__cil_tmp32 ; [L86] struct node *__cil_tmp33 ; [L87] unsigned int __cil_tmp34 ; [L88] unsigned int __cil_tmp35 ; [L89] struct list_head const *__cil_tmp36 ; [L90] unsigned int __cil_tmp37 ; [L91] unsigned int __cil_tmp38 ; [L92] unsigned int __cil_tmp39 ; [L93] struct list_head *__cil_tmp40 ; [L94] unsigned int __cil_tmp41 ; [L95] int __cil_tmp42 ; [L96] unsigned int __cil_tmp43 ; [L97] unsigned int __cil_tmp44 ; [L98] struct list_head const *__cil_tmp45 ; [L99] unsigned int __cil_tmp46 ; [L100] unsigned int __cil_tmp47 ; [L101] unsigned int __cil_tmp48 ; [L102] unsigned int __cil_tmp49 ; [L103] struct list_head *__cil_tmp50 ; [L104] unsigned int __cil_tmp51 ; [L105] int __cil_tmp52 ; [L106] unsigned int __cil_tmp53 ; [L107] unsigned int __cil_tmp54 ; [L108] struct list_head const *__cil_tmp55 ; [L109] unsigned int __cil_tmp56 ; [L110] unsigned int __cil_tmp57 ; [L111] unsigned int __cil_tmp58 ; [L112] struct list_head *__cil_tmp59 ; [L113] unsigned int __cil_tmp60 ; [L114] int __cil_tmp61 ; [L115] unsigned int __cil_tmp62 ; [L116] unsigned int __cil_tmp63 ; [L117] struct list_head const *__cil_tmp64 ; [L118] unsigned int __cil_tmp65 ; [L119] unsigned int __cil_tmp66 ; [L120] unsigned int __cil_tmp67 ; [L121] unsigned int __cil_tmp68 ; [L122] struct list_head *__cil_tmp69 ; [L123] unsigned int __cil_tmp70 ; [L124] int __cil_tmp71 ; [L125] struct node const *__cil_tmp72 ; [L126] unsigned int __cil_tmp73 ; [L127] unsigned int __cil_tmp74 ; [L128] int __cil_tmp75 ; [L129] unsigned int __cil_tmp76 ; [L130] unsigned int __cil_tmp77 ; [L131] struct list_head const *__cil_tmp78 ; [L132] struct node const *__cil_tmp79 ; [L133] unsigned int __cil_tmp80 ; [L134] unsigned int __cil_tmp81 ; [L135] int __cil_tmp82 ; [L136] int const *__cil_tmp83 ; [L137] struct node const *__cil_tmp84 ; [L138] unsigned int __cil_tmp85 ; [L139] unsigned int __cil_tmp86 ; [L140] int __cil_tmp87 ; [L141] unsigned int __cil_tmp88 ; [L142] unsigned int __cil_tmp89 ; [L143] struct list_head *__cil_tmp90 ; [L144] unsigned int __cil_tmp91 ; [L145] unsigned int __cil_tmp92 ; [L146] struct list_head *__cil_tmp93 ; [L147] unsigned int __cil_tmp94 ; [L148] unsigned int __cil_tmp95 ; [L149] int __cil_tmp96 ; [L150] unsigned int __cil_tmp97 ; [L151] unsigned int __cil_tmp98 ; [L152] unsigned int __cil_tmp99 ; [L153] struct list_head *__cil_tmp100 ; [L154] struct list_head *__cil_tmp101 ; [L155] unsigned int __cil_tmp102 ; [L156] unsigned int __cil_tmp103 ; [L157] int __cil_tmp104 ; [L158] struct list_head *__cil_tmp105 ; [L159] unsigned int __cil_tmp106 ; [L160] unsigned int __cil_tmp107 ; [L161] unsigned int __cil_tmp108 ; [L162] struct list_head const *__cil_tmp109 ; [L163] unsigned int __cil_tmp110 ; [L164] struct list_head *__cil_tmp111 ; [L165] unsigned int __cil_tmp112 ; [L166] struct node *__cil_tmp113 ; [L167] unsigned int __cil_tmp114 ; [L168] unsigned int __cil_tmp115 ; [L169] struct list_head *__cil_tmp116 ; [L170] unsigned long __cil_tmp117 ; [L171] char *__cil_tmp118 ; [L172] char *__cil_tmp119 ; [L173] struct node *__cil_tmp120 ; [L174] unsigned int __cil_tmp121 ; [L175] int __cil_tmp122 ; VAL [gl_list={5:0}, head={5:0}, head={5:0}] [L179] COND TRUE 1 VAL [gl_list={5:0}, head={5:0}, head={5:0}] [L181] COND FALSE !(! head) VAL [gl_list={5:0}, head={5:0}, head={5:0}] [L192] COND TRUE 1 [L195] __cil_tmp3 = (unsigned int )head [L196] EXPR \read(*head) [L196] __cil_tmp4 = *((struct list_head * const *)head) [L197] __cil_tmp5 = (unsigned int )__cil_tmp4 [L198] __cil_tmp6 = __cil_tmp5 != __cil_tmp3 VAL [__cil_tmp3=5, __cil_tmp4={0:5}, __cil_tmp5=5, __cil_tmp6=0, gl_list={5:0}, head={5:0}, head={5:0}] [L199] COND TRUE ! __cil_tmp6 VAL [__cil_tmp3=5, __cil_tmp4={0:5}, __cil_tmp5=5, __cil_tmp6=0, gl_list={5:0}, head={5:0}, head={5:0}] [L201] CALL fail() VAL [gl_list={5:0}] [L46] reach_error() VAL [gl_list={5:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 16 procedures, 130 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.4s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 254 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 254 mSDsluCounter, 545 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 314 mSDsCounter, 43 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 162 IncrementalHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 43 mSolverCounterUnsat, 231 mSDtfsCounter, 162 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=157occurred in iteration=2, InterpolantAutomatonStates: 8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 16 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 79 NumberOfCodeBlocks, 79 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 45 ConstructedInterpolants, 0 QuantifiedInterpolants, 63 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-03-31 22:57:16,277 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...