/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 OctagonDomain -i ../sv-benchmarks/c/loops/veris.c_NetBSD-libc_loop.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 22:01:12,659 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 22:01:12,661 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 22:01:12,695 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-02 22:01:12,696 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-02 22:01:12,698 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-02 22:01:12,700 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-02 22:01:12,704 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-02 22:01:12,704 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-02 22:01:12,705 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-02 22:01:12,705 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-02 22:01:12,706 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-02 22:01:12,706 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 22:01:12,707 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 22:01:12,707 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 22:01:12,708 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 22:01:12,709 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 22:01:12,709 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 22:01:12,710 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 22:01:12,711 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 22:01:12,712 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 22:01:12,719 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 22:01:12,720 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 22:01:12,721 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 22:01:12,727 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-02 22:01:12,727 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-02 22:01:12,727 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-02 22:01:12,728 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-02 22:01:12,728 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-02 22:01:12,728 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-02 22:01:12,729 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-02 22:01:12,729 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-02 22:01:12,729 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-02 22:01:12,730 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-02 22:01:12,730 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-02 22:01:12,730 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-02 22:01:12,731 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-02 22:01:12,731 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-02 22:01:12,731 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 22:01:12,732 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 22:01:12,732 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 22:01:12,735 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 [2023-04-02 22:01:12,761 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 22:01:12,761 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 22:01:12,761 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 22:01:12,761 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 22:01:12,762 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 22:01:12,762 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 22:01:12,762 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-02 22:01:12,762 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-02 22:01:12,762 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-02 22:01:12,762 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-02 22:01:12,763 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-02 22:01:12,763 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-02 22:01:12,763 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-02 22:01:12,763 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-02 22:01:12,763 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-02 22:01:12,763 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-02 22:01:12,763 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-02 22:01:12,764 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-02 22:01:12,764 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 22:01:12,764 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 22:01:12,764 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 22:01:12,765 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 22:01:12,765 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 22:01:12,765 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 22:01:12,765 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 22:01:12,765 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 22:01:12,765 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 22:01:12,765 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 22:01:12,765 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 22:01:12,765 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 22:01:12,766 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 22:01:12,766 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 22:01:12,766 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 22:01:12,766 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 22:01:12,766 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-02 22:01:12,766 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 22:01:12,766 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 22:01:12,766 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-02 22:01:12,766 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 22:01:12,766 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 22:01:12,766 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-02 22:01:12,767 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-02 22:01:12,941 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 22:01:12,966 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 22:01:12,968 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 22:01:12,968 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 22:01:12,969 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 22:01:12,970 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops/veris.c_NetBSD-libc_loop.i [2023-04-02 22:01:14,028 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 22:01:14,166 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 22:01:14,166 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/veris.c_NetBSD-libc_loop.i [2023-04-02 22:01:14,170 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b06fff7ec/1876c596cc8c4e7e9652b2cbefdb7059/FLAG71e6e4345 [2023-04-02 22:01:14,184 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b06fff7ec/1876c596cc8c4e7e9652b2cbefdb7059 [2023-04-02 22:01:14,187 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 22:01:14,187 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 22:01:14,189 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 22:01:14,189 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 22:01:14,191 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 22:01:14,191 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 10:01:14" (1/1) ... [2023-04-02 22:01:14,192 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d09cb58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:01:14, skipping insertion in model container [2023-04-02 22:01:14,192 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 10:01:14" (1/1) ... [2023-04-02 22:01:14,197 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 22:01:14,210 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 22:01:14,314 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/veris.c_NetBSD-libc_loop.i[825,838] [2023-04-02 22:01:14,327 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 22:01:14,333 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 22:01:14,342 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/veris.c_NetBSD-libc_loop.i[825,838] [2023-04-02 22:01:14,349 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 22:01:14,357 INFO L208 MainTranslator]: Completed translation [2023-04-02 22:01:14,358 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:01:14 WrapperNode [2023-04-02 22:01:14,358 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 22:01:14,359 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 22:01:14,359 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 22:01:14,359 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 22:01:14,365 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:01:14" (1/1) ... [2023-04-02 22:01:14,365 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:01:14" (1/1) ... [2023-04-02 22:01:14,369 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:01:14" (1/1) ... [2023-04-02 22:01:14,369 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:01:14" (1/1) ... [2023-04-02 22:01:14,380 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:01:14" (1/1) ... [2023-04-02 22:01:14,382 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:01:14" (1/1) ... [2023-04-02 22:01:14,383 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:01:14" (1/1) ... [2023-04-02 22:01:14,384 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:01:14" (1/1) ... [2023-04-02 22:01:14,388 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 22:01:14,389 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 22:01:14,389 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 22:01:14,389 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 22:01:14,390 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:01:14" (1/1) ... [2023-04-02 22:01:14,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 22:01:14,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 22:01:14,417 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) [2023-04-02 22:01:14,432 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 [2023-04-02 22:01:14,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 22:01:14,444 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 22:01:14,444 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 22:01:14,444 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-04-02 22:01:14,444 INFO L138 BoogieDeclarations]: Found implementation of procedure glob2 [2023-04-02 22:01:14,444 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 22:01:14,444 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 22:01:14,444 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 22:01:14,444 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2023-04-02 22:01:14,444 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2023-04-02 22:01:14,444 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 22:01:14,444 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 22:01:14,445 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-04-02 22:01:14,445 INFO L130 BoogieDeclarations]: Found specification of procedure glob2 [2023-04-02 22:01:14,445 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 22:01:14,445 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 22:01:14,445 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-04-02 22:01:14,445 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 22:01:14,445 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 22:01:14,445 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 22:01:14,445 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 22:01:14,445 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 22:01:14,528 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 22:01:14,529 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 22:01:14,670 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 22:01:14,694 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 22:01:14,694 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-02 22:01:14,695 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 10:01:14 BoogieIcfgContainer [2023-04-02 22:01:14,695 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 22:01:14,697 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 22:01:14,697 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 22:01:14,699 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 22:01:14,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 10:01:14" (1/3) ... [2023-04-02 22:01:14,699 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5aaeff4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 10:01:14, skipping insertion in model container [2023-04-02 22:01:14,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:01:14" (2/3) ... [2023-04-02 22:01:14,699 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5aaeff4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 10:01:14, skipping insertion in model container [2023-04-02 22:01:14,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 10:01:14" (3/3) ... [2023-04-02 22:01:14,700 INFO L112 eAbstractionObserver]: Analyzing ICFG veris.c_NetBSD-libc_loop.i [2023-04-02 22:01:14,713 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 22:01:14,713 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-02 22:01:14,750 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 22:01:14,755 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;@4808d511, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-02 22:01:14,755 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-02 22:01:14,758 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-04-02 22:01:14,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-04-02 22:01:14,762 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 22:01:14,762 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 22:01:14,763 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 22:01:14,767 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 22:01:14,767 INFO L85 PathProgramCache]: Analyzing trace with hash 564233662, now seen corresponding path program 1 times [2023-04-02 22:01:14,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 22:01:14,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797900191] [2023-04-02 22:01:14,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:01:14,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 22:01:14,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 22:01:15,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 22:01:15,134 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 22:01:15,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797900191] [2023-04-02 22:01:15,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797900191] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 22:01:15,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 22:01:15,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 22:01:15,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532407221] [2023-04-02 22:01:15,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 22:01:15,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-02 22:01:15,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 22:01:15,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-02 22:01:15,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-02 22:01:15,167 INFO L87 Difference]: Start difference. First operand has 21 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 states have internal predecessors, (7), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 22:01:15,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 22:01:15,258 INFO L93 Difference]: Finished difference Result 43 states and 49 transitions. [2023-04-02 22:01:15,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-02 22:01:15,260 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 states have internal predecessors, (7), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2023-04-02 22:01:15,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 22:01:15,263 INFO L225 Difference]: With dead ends: 43 [2023-04-02 22:01:15,263 INFO L226 Difference]: Without dead ends: 23 [2023-04-02 22:01:15,265 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-02 22:01:15,267 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 14 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-02 22:01:15,268 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 52 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-02 22:01:15,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-04-02 22:01:15,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2023-04-02 22:01:15,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 14 states have internal predecessors, (14), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-02 22:01:15,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2023-04-02 22:01:15,289 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 12 [2023-04-02 22:01:15,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 22:01:15,289 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2023-04-02 22:01:15,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 states have internal predecessors, (7), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 22:01:15,289 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2023-04-02 22:01:15,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-04-02 22:01:15,290 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 22:01:15,290 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 22:01:15,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-02 22:01:15,290 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 22:01:15,291 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 22:01:15,291 INFO L85 PathProgramCache]: Analyzing trace with hash -673782624, now seen corresponding path program 1 times [2023-04-02 22:01:15,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 22:01:15,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132346395] [2023-04-02 22:01:15,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:01:15,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 22:01:15,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 22:01:15,453 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 22:01:15,453 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 22:01:15,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132346395] [2023-04-02 22:01:15,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132346395] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 22:01:15,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [319408309] [2023-04-02 22:01:15,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:01:15,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:01:15,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 22:01:15,456 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 22:01:15,457 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-02 22:01:15,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 22:01:15,507 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 21 conjunts are in the unsatisfiable core [2023-04-02 22:01:15,511 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 22:01:15,579 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 22:01:15,579 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 22:01:15,648 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 22:01:15,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [319408309] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 22:01:15,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [171895830] [2023-04-02 22:01:15,661 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2023-04-02 22:01:15,661 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 22:01:15,663 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 22:01:15,666 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 22:01:15,666 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 22:01:15,712 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 26 for LOIs [2023-04-02 22:01:15,730 INFO L197 IcfgInterpreter]: Interpreting procedure glob2 with input of size 41 for LOIs [2023-04-02 22:01:16,458 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 22 for LOIs [2023-04-02 22:01:16,465 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 13 for LOIs [2023-04-02 22:01:16,469 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 22:01:17,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [171895830] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 22:01:17,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-04-02 22:01:17,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [8, 8, 8] total 20 [2023-04-02 22:01:17,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044014215] [2023-04-02 22:01:17,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 22:01:17,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-02 22:01:17,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 22:01:17,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-02 22:01:17,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2023-04-02 22:01:17,091 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand has 12 states, 8 states have (on average 1.25) internal successors, (10), 6 states have internal predecessors, (10), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-02 22:01:17,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 22:01:17,469 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2023-04-02 22:01:17,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-02 22:01:17,469 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 8 states have (on average 1.25) internal successors, (10), 6 states have internal predecessors, (10), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 19 [2023-04-02 22:01:17,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 22:01:17,470 INFO L225 Difference]: With dead ends: 23 [2023-04-02 22:01:17,470 INFO L226 Difference]: Without dead ends: 0 [2023-04-02 22:01:17,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 43 SyntacticMatches, 3 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=106, Invalid=596, Unknown=0, NotChecked=0, Total=702 [2023-04-02 22:01:17,471 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 12 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 22:01:17,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 9 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 22:01:17,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-04-02 22:01:17,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-04-02 22:01:17,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-04-02 22:01:17,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-04-02 22:01:17,472 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2023-04-02 22:01:17,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 22:01:17,473 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-04-02 22:01:17,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 8 states have (on average 1.25) internal successors, (10), 6 states have internal predecessors, (10), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-02 22:01:17,473 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-04-02 22:01:17,473 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-04-02 22:01:17,475 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-04-02 22:01:17,482 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-04-02 22:01:17,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:01:17,682 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-04-02 22:01:18,012 INFO L899 garLoopResultBuilder]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2023-04-02 22:01:18,012 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line 12) no Hoare annotation was computed. [2023-04-02 22:01:18,013 INFO L895 garLoopResultBuilder]: At program point L31(line 31) the Hoare annotation is: (or (and (<= glob2_~p~0.offset 4) (= glob2_~pathlim.base glob2_~pathbuf.base) (= glob2_~pathbuf.offset 0) (<= 0 glob2_~p~0.offset) (= ~tmp~0.base glob2_~pathbuf.base) (= 4 glob2_~pathlim.offset) (= glob2_~pathbuf.base glob2_~p~0.base)) (not (= |#NULL.offset| 0)) (forall ((|v_old(#valid)_BEFORE_CALL_1| (Array Int Int))) (or (not (= (store |v_old(#valid)_BEFORE_CALL_1| ~tmp~0.base 1) |#valid|)) (not (= (select |v_old(#valid)_BEFORE_CALL_1| ~tmp~0.base) 0)))) (not (= ~tmp~0.base |glob2_#in~pathbuf.base|)) (not (= ~tmp~0.offset 4)) (not (= ~tmp~0.base |glob2_#in~pathlim.base|)) (not (= |#NULL.base| 0)) (forall ((|v_old(#length)_BEFORE_CALL_1| (Array Int Int))) (not (= |#length| (store |v_old(#length)_BEFORE_CALL_1| ~tmp~0.base 8)))) (< |#StackHeapBarrier| 1) (not (= |glob2_#in~pathlim.offset| 4)) (not (= |glob2_#in~pathbuf.offset| 0)) (<= ~tmp~0.base |#StackHeapBarrier|)) [2023-04-02 22:01:18,013 INFO L899 garLoopResultBuilder]: For program point L31-1(line 31) no Hoare annotation was computed. [2023-04-02 22:01:18,013 INFO L895 garLoopResultBuilder]: At program point L29-3(lines 29 33) the Hoare annotation is: (or (not (= |#NULL.offset| 0)) (forall ((|v_old(#valid)_BEFORE_CALL_1| (Array Int Int))) (or (not (= (store |v_old(#valid)_BEFORE_CALL_1| ~tmp~0.base 1) |#valid|)) (not (= (select |v_old(#valid)_BEFORE_CALL_1| ~tmp~0.base) 0)))) (not (= ~tmp~0.base |glob2_#in~pathbuf.base|)) (not (= ~tmp~0.offset 4)) (not (= ~tmp~0.base |glob2_#in~pathlim.base|)) (not (= |#NULL.base| 0)) (and (= glob2_~pathlim.base glob2_~pathbuf.base) (= glob2_~pathbuf.offset 0) (<= 0 glob2_~p~0.offset) (= ~tmp~0.base glob2_~pathbuf.base) (= 4 glob2_~pathlim.offset) (= glob2_~pathbuf.base glob2_~p~0.base)) (forall ((|v_old(#length)_BEFORE_CALL_1| (Array Int Int))) (not (= |#length| (store |v_old(#length)_BEFORE_CALL_1| ~tmp~0.base 8)))) (< |#StackHeapBarrier| 1) (not (= |glob2_#in~pathlim.offset| 4)) (not (= |glob2_#in~pathbuf.offset| 0)) (<= ~tmp~0.base |#StackHeapBarrier|)) [2023-04-02 22:01:18,013 INFO L899 garLoopResultBuilder]: For program point glob2EXIT(lines 25 36) no Hoare annotation was computed. [2023-04-02 22:01:18,013 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 25 36) the Hoare annotation is: (or (not (= |#NULL.offset| 0)) (forall ((|v_old(#valid)_BEFORE_CALL_1| (Array Int Int))) (or (not (= (store |v_old(#valid)_BEFORE_CALL_1| ~tmp~0.base 1) |#valid|)) (not (= (select |v_old(#valid)_BEFORE_CALL_1| ~tmp~0.base) 0)))) (= |#memory_int| |old(#memory_int)|) (not (= ~tmp~0.base |glob2_#in~pathbuf.base|)) (not (= ~tmp~0.offset 4)) (not (= ~tmp~0.base |glob2_#in~pathlim.base|)) (not (= |#NULL.base| 0)) (forall ((|v_old(#length)_BEFORE_CALL_1| (Array Int Int))) (not (= |#length| (store |v_old(#length)_BEFORE_CALL_1| ~tmp~0.base 8)))) (< |#StackHeapBarrier| 1) (not (= |glob2_#in~pathlim.offset| 4)) (not (= |glob2_#in~pathbuf.offset| 0)) (<= ~tmp~0.base |#StackHeapBarrier|)) [2023-04-02 22:01:18,013 INFO L895 garLoopResultBuilder]: At program point L46(line 46) the Hoare annotation is: (let ((.cse0 (select |old(#memory_int)| 1))) (or (not (= (select |old(#valid)| 2) 1)) (not (= (select |old(#valid)| 1) 1)) (not (= |#NULL.offset| 0)) (not (= |old(~tmp~0.offset)| 0)) (not (= |old(~tmp~0.base)| 0)) (and (= ~tmp~0.base |main_~#pathbuf~0.base|) (= |#memory_int| |old(#memory_int)|) (< |#StackHeapBarrier| |main_~#pathbuf~0.base|) (= (store |old(#valid)| |main_~#pathbuf~0.base| 1) |#valid|) (= |main_~#pathbuf~0.base| main_~bound~0.base) (= (select |old(#valid)| |main_~#pathbuf~0.base|) 0) (= |#length| (store |old(#length)| |main_~#pathbuf~0.base| 8)) (= |main_~#pathbuf~0.offset| 0) (= main_~bound~0.offset 4) (= ~tmp~0.offset 4)) (not (= |#NULL.base| 0)) (not (= (select |old(#length)| 1) 2)) (not (= (select |old(#length)| 2) 27)) (not (= (select .cse0 0) 48)) (not (= (select |old(#valid)| 0) 0)) (<= |#StackHeapBarrier| 0) (not (= (select .cse0 1) 0)))) [2023-04-02 22:01:18,013 INFO L899 garLoopResultBuilder]: For program point L46-1(line 46) no Hoare annotation was computed. [2023-04-02 22:01:18,014 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 38 49) the Hoare annotation is: (let ((.cse0 (select |old(#memory_int)| 1))) (or (not (= (select |old(#valid)| 2) 1)) (not (= (select |old(#valid)| 1) 1)) (not (= |#NULL.offset| 0)) (not (= |old(~tmp~0.offset)| 0)) (not (= |old(~tmp~0.base)| 0)) (and (= |old(#length)| |#length|) (= |#memory_int| |old(#memory_int)|) (= ~tmp~0.base 0) (= ~tmp~0.offset 0) (= |old(#valid)| |#valid|)) (not (= |#NULL.base| 0)) (not (= (select |old(#length)| 1) 2)) (not (= (select |old(#length)| 2) 27)) (not (= (select .cse0 0) 48)) (not (= (select |old(#valid)| 0) 0)) (<= |#StackHeapBarrier| 0) (not (= (select .cse0 1) 0)))) [2023-04-02 22:01:18,014 INFO L899 garLoopResultBuilder]: For program point mainEXIT(lines 38 49) no Hoare annotation was computed. [2023-04-02 22:01:18,014 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: (and (= ~tmp~0.offset |old(~tmp~0.offset)|) (= |old(~tmp~0.base)| ~tmp~0.base) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|)) [2023-04-02 22:01:18,014 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2023-04-02 22:01:18,014 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-04-02 22:01:18,014 INFO L895 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (= 2 (select |#length| 1)) (= ~tmp~0.base 0) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse0 0) 48) (= 27 (select |#length| 2)) (= ~tmp~0.offset 0) (= (select .cse0 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2023-04-02 22:01:18,014 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-04-02 22:01:18,014 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: true [2023-04-02 22:01:18,014 INFO L899 garLoopResultBuilder]: For program point L16(line 16) no Hoare annotation was computed. [2023-04-02 22:01:18,014 INFO L899 garLoopResultBuilder]: For program point L15(lines 15 17) no Hoare annotation was computed. [2023-04-02 22:01:18,014 INFO L899 garLoopResultBuilder]: For program point L15-2(lines 14 19) no Hoare annotation was computed. [2023-04-02 22:01:18,015 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 14 19) no Hoare annotation was computed. [2023-04-02 22:01:18,015 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 14 19) the Hoare annotation is: true [2023-04-02 22:01:18,015 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2023-04-02 22:01:18,017 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-04-02 22:01:18,018 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-04-02 22:01:18,042 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_old_#valid__BEFORE_CALL_1,QUANTIFIED] [2023-04-02 22:01:18,042 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_old_#valid__BEFORE_CALL_1,QUANTIFIED] [2023-04-02 22:01:18,043 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_old_#length__BEFORE_CALL_1,QUANTIFIED] [2023-04-02 22:01:18,048 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_old_#valid__BEFORE_CALL_1,QUANTIFIED] [2023-04-02 22:01:18,048 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_old_#valid__BEFORE_CALL_1,QUANTIFIED] [2023-04-02 22:01:18,049 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_old_#length__BEFORE_CALL_1,QUANTIFIED] [2023-04-02 22:01:18,051 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.04 10:01:18 BoogieIcfgContainer [2023-04-02 22:01:18,051 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-04-02 22:01:18,053 INFO L158 Benchmark]: Toolchain (without parser) took 3863.79ms. Allocated memory was 175.1MB in the beginning and 266.3MB in the end (delta: 91.2MB). Free memory was 143.1MB in the beginning and 185.0MB in the end (delta: -41.9MB). Peak memory consumption was 149.8MB. Max. memory is 8.0GB. [2023-04-02 22:01:18,053 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 175.1MB. Free memory is still 129.8MB. There was no memory consumed. Max. memory is 8.0GB. [2023-04-02 22:01:18,053 INFO L158 Benchmark]: CACSL2BoogieTranslator took 169.18ms. Allocated memory is still 175.1MB. Free memory was 143.1MB in the beginning and 133.1MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-04-02 22:01:18,054 INFO L158 Benchmark]: Boogie Preprocessor took 29.72ms. Allocated memory is still 175.1MB. Free memory was 133.1MB in the beginning and 131.6MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-04-02 22:01:18,054 INFO L158 Benchmark]: RCFGBuilder took 306.38ms. Allocated memory is still 175.1MB. Free memory was 131.6MB in the beginning and 119.0MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-04-02 22:01:18,055 INFO L158 Benchmark]: TraceAbstraction took 3354.18ms. Allocated memory was 175.1MB in the beginning and 266.3MB in the end (delta: 91.2MB). Free memory was 118.4MB in the beginning and 185.0MB in the end (delta: -66.6MB). Peak memory consumption was 124.6MB. Max. memory is 8.0GB. [2023-04-02 22:01:18,057 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 175.1MB. Free memory is still 129.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 169.18ms. Allocated memory is still 175.1MB. Free memory was 143.1MB in the beginning and 133.1MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 29.72ms. Allocated memory is still 175.1MB. Free memory was 133.1MB in the beginning and 131.6MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 306.38ms. Allocated memory is still 175.1MB. Free memory was 131.6MB in the beginning and 119.0MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 3354.18ms. Allocated memory was 175.1MB in the beginning and 266.3MB in the end (delta: 91.2MB). Free memory was 118.4MB in the beginning and 185.0MB in the end (delta: -66.6MB). Peak memory consumption was 124.6MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_old_#valid__BEFORE_CALL_1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_old_#valid__BEFORE_CALL_1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_old_#length__BEFORE_CALL_1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_old_#valid__BEFORE_CALL_1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_old_#valid__BEFORE_CALL_1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_old_#length__BEFORE_CALL_1,QUANTIFIED] * 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 - PositiveResult [Line: 16]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.3s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 29 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 26 mSDsluCounter, 61 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 46 mSDsCounter, 11 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 162 IncrementalHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 11 mSolverCounterUnsat, 15 mSDtfsCounter, 162 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 80 GetRequests, 45 SyntacticMatches, 3 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=1, InterpolantAutomatonStates: 20, 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, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 11 PreInvPairs, 15 NumberOfFragments, 475 HoareAnnotationTreeSize, 11 FomulaSimplifications, 44 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 451 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 50 NumberOfCodeBlocks, 50 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 65 ConstructedInterpolants, 0 QuantifiedInterpolants, 275 SizeOfPredicates, 5 NumberOfNonLiveVariables, 132 ConjunctsInSsa, 21 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 6/12 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: OVERALL_TIME: 0.8s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 5, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 15, DAG_INTERPRETER_EARLY_EXITS: 1, TOOLS_POST_APPLICATIONS: 16, TOOLS_POST_TIME: 0.1s, TOOLS_POST_CALL_APPLICATIONS: 12, TOOLS_POST_CALL_TIME: 0.2s, TOOLS_POST_RETURN_APPLICATIONS: 8, TOOLS_POST_RETURN_TIME: 0.2s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 36, TOOLS_QUANTIFIERELIM_TIME: 0.6s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.1s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 56, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 5, DOMAIN_JOIN_TIME: 0.1s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 1, DOMAIN_WIDEN_TIME: 0.1s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 2, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 15, DOMAIN_ISBOTTOM_TIME: 0.0s, LOOP_SUMMARIZER_APPLICATIONS: 1, LOOP_SUMMARIZER_CACHE_MISSES: 1, LOOP_SUMMARIZER_OVERALL_TIME: 0.4s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 0.4s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 2, CALL_SUMMARIZER_APPLICATIONS: 8, CALL_SUMMARIZER_CACHE_MISSES: 2, CALL_SUMMARIZER_OVERALL_TIME: 0.0s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, 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: 88, DAG_COMPRESSION_RETAINED_NODES: 61, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 29]: Loop Invariant [2023-04-02 22:01:18,070 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_old_#valid__BEFORE_CALL_1,QUANTIFIED] [2023-04-02 22:01:18,070 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_old_#valid__BEFORE_CALL_1,QUANTIFIED] [2023-04-02 22:01:18,072 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_old_#length__BEFORE_CALL_1,QUANTIFIED] [2023-04-02 22:01:18,089 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_old_#valid__BEFORE_CALL_1,QUANTIFIED] [2023-04-02 22:01:18,089 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_old_#valid__BEFORE_CALL_1,QUANTIFIED] [2023-04-02 22:01:18,089 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_old_#length__BEFORE_CALL_1,QUANTIFIED] Derived loop invariant: ((((((((((!(#NULL == 0) || (forall v_\old(#valid)_BEFORE_CALL_1 : [int]int :: !(v_\old_#valid__BEFORE_CALL_1[tmp := 1] == \valid) || !(v_\old_#valid__BEFORE_CALL_1[tmp] == 0))) || !(tmp == pathbuf)) || !(tmp == 4)) || !(tmp == pathlim)) || !(#NULL == 0)) || (((((pathlim == pathbuf && pathbuf == 0) && 0 <= p) && tmp == pathbuf) && 4 == pathlim) && pathbuf == p)) || (forall v_\old(#length)_BEFORE_CALL_1 : [int]int :: !(unknown-#length-unknown == v_\old_#length__BEFORE_CALL_1[tmp := 8]))) || unknown-#StackHeapBarrier-unknown < 1) || !(pathlim == 4)) || !(pathbuf == 0)) || tmp <= unknown-#StackHeapBarrier-unknown RESULT: Ultimate proved your program to be correct! [2023-04-02 22:01:18,099 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...