./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loops/veris.c_NetBSD-libc_loop.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/loops/veris.c_NetBSD-libc_loop.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b1c73403384a361e15608c077b8e86297621fa69c42f15894e841079f64af74a --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 02:31:16,801 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 02:31:16,803 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 02:31:16,839 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 02:31:16,840 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 02:31:16,841 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 02:31:16,846 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 02:31:16,849 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 02:31:16,851 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 02:31:16,855 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 02:31:16,866 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 02:31:16,870 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 02:31:16,871 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 02:31:16,873 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 02:31:16,875 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 02:31:16,878 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 02:31:16,879 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 02:31:16,880 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 02:31:16,881 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 02:31:16,884 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 02:31:16,887 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 02:31:16,889 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 02:31:16,890 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 02:31:16,891 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 02:31:16,893 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 02:31:16,898 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 02:31:16,902 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 02:31:16,903 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 02:31:16,904 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 02:31:16,904 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 02:31:16,905 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 02:31:16,905 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 02:31:16,907 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 02:31:16,908 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 02:31:16,909 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 02:31:16,910 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 02:31:16,910 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 02:31:16,911 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 02:31:16,911 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 02:31:16,911 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 02:31:16,912 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 02:31:16,913 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 02:31:16,919 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 02:31:16,964 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 02:31:16,966 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 02:31:16,966 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 02:31:16,966 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 02:31:16,967 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 02:31:16,967 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 02:31:16,968 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 02:31:16,968 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 02:31:16,969 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 02:31:16,970 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 02:31:16,970 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 02:31:16,970 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 02:31:16,970 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 02:31:16,970 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 02:31:16,971 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 02:31:16,971 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 02:31:16,971 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 02:31:16,971 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 02:31:16,972 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 02:31:16,972 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 02:31:16,972 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 02:31:16,972 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 02:31:16,973 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 02:31:16,973 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 02:31:16,973 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 02:31:16,973 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 02:31:16,974 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 02:31:16,974 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 02:31:16,974 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 02:31:16,974 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 02:31:16,974 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 02:31:16,975 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 02:31:16,975 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 02:31:16,975 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b1c73403384a361e15608c077b8e86297621fa69c42f15894e841079f64af74a [2022-07-21 02:31:17,273 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 02:31:17,294 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 02:31:17,297 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 02:31:17,298 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 02:31:17,298 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 02:31:17,300 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops/veris.c_NetBSD-libc_loop.i [2022-07-21 02:31:17,361 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36451bcc2/ecbafab781f84c37b02b9fffaeeb8450/FLAGc4cc0156c [2022-07-21 02:31:17,891 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 02:31:17,892 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/veris.c_NetBSD-libc_loop.i [2022-07-21 02:31:17,908 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36451bcc2/ecbafab781f84c37b02b9fffaeeb8450/FLAGc4cc0156c [2022-07-21 02:31:18,362 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36451bcc2/ecbafab781f84c37b02b9fffaeeb8450 [2022-07-21 02:31:18,365 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 02:31:18,366 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 02:31:18,367 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 02:31:18,367 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 02:31:18,369 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 02:31:18,370 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 02:31:18" (1/1) ... [2022-07-21 02:31:18,371 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63dc4197 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:31:18, skipping insertion in model container [2022-07-21 02:31:18,372 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 02:31:18" (1/1) ... [2022-07-21 02:31:18,378 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 02:31:18,394 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 02:31:18,499 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/veris.c_NetBSD-libc_loop.i[825,838] [2022-07-21 02:31:18,512 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 02:31:18,524 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 02:31:18,538 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/veris.c_NetBSD-libc_loop.i[825,838] [2022-07-21 02:31:18,551 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 02:31:18,564 INFO L208 MainTranslator]: Completed translation [2022-07-21 02:31:18,564 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:31:18 WrapperNode [2022-07-21 02:31:18,564 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 02:31:18,565 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 02:31:18,565 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 02:31:18,565 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 02:31:18,570 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:31:18" (1/1) ... [2022-07-21 02:31:18,575 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:31:18" (1/1) ... [2022-07-21 02:31:18,592 INFO L137 Inliner]: procedures = 16, calls = 12, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 43 [2022-07-21 02:31:18,593 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 02:31:18,594 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 02:31:18,594 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 02:31:18,594 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 02:31:18,601 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:31:18" (1/1) ... [2022-07-21 02:31:18,601 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:31:18" (1/1) ... [2022-07-21 02:31:18,613 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:31:18" (1/1) ... [2022-07-21 02:31:18,613 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:31:18" (1/1) ... [2022-07-21 02:31:18,620 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:31:18" (1/1) ... [2022-07-21 02:31:18,625 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:31:18" (1/1) ... [2022-07-21 02:31:18,630 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:31:18" (1/1) ... [2022-07-21 02:31:18,636 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 02:31:18,637 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 02:31:18,638 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 02:31:18,638 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 02:31:18,639 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:31:18" (1/1) ... [2022-07-21 02:31:18,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 02:31:18,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 02:31:18,669 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-21 02:31:18,696 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-21 02:31:18,715 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 02:31:18,715 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 02:31:18,721 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-21 02:31:18,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-21 02:31:18,722 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 02:31:18,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 02:31:18,722 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 02:31:18,782 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 02:31:18,783 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 02:31:18,940 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 02:31:18,945 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 02:31:18,963 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-21 02:31:18,965 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 02:31:18 BoogieIcfgContainer [2022-07-21 02:31:18,966 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 02:31:18,967 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 02:31:18,967 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 02:31:18,970 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 02:31:18,970 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 02:31:18" (1/3) ... [2022-07-21 02:31:18,971 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48b00cc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 02:31:18, skipping insertion in model container [2022-07-21 02:31:18,971 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:31:18" (2/3) ... [2022-07-21 02:31:18,971 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48b00cc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 02:31:18, skipping insertion in model container [2022-07-21 02:31:18,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 02:31:18" (3/3) ... [2022-07-21 02:31:18,973 INFO L111 eAbstractionObserver]: Analyzing ICFG veris.c_NetBSD-libc_loop.i [2022-07-21 02:31:18,985 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 02:31:18,986 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 02:31:19,024 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 02:31:19,030 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=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@78ab91e3, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@3585a19d [2022-07-21 02:31:19,031 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 02:31:19,035 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 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) [2022-07-21 02:31:19,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-07-21 02:31:19,040 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 02:31:19,040 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-07-21 02:31:19,041 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 02:31:19,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 02:31:19,046 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-07-21 02:31:19,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 02:31:19,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405196933] [2022-07-21 02:31:19,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 02:31:19,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 02:31:19,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 02:31:19,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 02:31:19,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 02:31:19,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405196933] [2022-07-21 02:31:19,329 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405196933] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 02:31:19,329 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 02:31:19,329 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 02:31:19,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384653895] [2022-07-21 02:31:19,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 02:31:19,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 02:31:19,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 02:31:19,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 02:31:19,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 02:31:19,367 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 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) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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) [2022-07-21 02:31:19,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 02:31:19,441 INFO L93 Difference]: Finished difference Result 33 states and 39 transitions. [2022-07-21 02:31:19,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 02:31:19,444 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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) Word has length 5 [2022-07-21 02:31:19,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 02:31:19,452 INFO L225 Difference]: With dead ends: 33 [2022-07-21 02:31:19,452 INFO L226 Difference]: Without dead ends: 12 [2022-07-21 02:31:19,456 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 02:31:19,461 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 17 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 02:31:19,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 28 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 02:31:19,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2022-07-21 02:31:19,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 10. [2022-07-21 02:31:19,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 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) [2022-07-21 02:31:19,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2022-07-21 02:31:19,496 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 5 [2022-07-21 02:31:19,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 02:31:19,497 INFO L495 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2022-07-21 02:31:19,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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) [2022-07-21 02:31:19,498 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2022-07-21 02:31:19,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-21 02:31:19,499 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 02:31:19,499 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 02:31:19,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 02:31:19,499 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 02:31:19,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 02:31:19,502 INFO L85 PathProgramCache]: Analyzing trace with hash -185344033, now seen corresponding path program 1 times [2022-07-21 02:31:19,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 02:31:19,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30869432] [2022-07-21 02:31:19,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 02:31:19,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 02:31:19,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 02:31:19,604 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 02:31:19,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 02:31:19,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30869432] [2022-07-21 02:31:19,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30869432] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 02:31:19,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [882153262] [2022-07-21 02:31:19,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 02:31:19,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 02:31:19,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 02:31:19,608 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) [2022-07-21 02:31:19,630 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-21 02:31:19,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 02:31:19,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 18 conjunts are in the unsatisfiable core [2022-07-21 02:31:19,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 02:31:19,822 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 02:31:19,822 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 02:31:19,903 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 02:31:19,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [882153262] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 02:31:19,904 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 02:31:19,904 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 6 [2022-07-21 02:31:19,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129001574] [2022-07-21 02:31:19,905 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 02:31:19,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 02:31:19,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 02:31:19,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 02:31:19,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-21 02:31:19,907 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 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) [2022-07-21 02:31:19,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 02:31:19,953 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2022-07-21 02:31:19,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 02:31:19,954 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 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) Word has length 9 [2022-07-21 02:31:19,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 02:31:19,955 INFO L225 Difference]: With dead ends: 19 [2022-07-21 02:31:19,955 INFO L226 Difference]: Without dead ends: 17 [2022-07-21 02:31:19,956 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-07-21 02:31:19,957 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 11 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 02:31:19,958 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 15 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 02:31:19,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-07-21 02:31:19,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 14. [2022-07-21 02:31:19,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 13 states have internal predecessors, (14), 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) [2022-07-21 02:31:19,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2022-07-21 02:31:19,963 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 9 [2022-07-21 02:31:19,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 02:31:19,963 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2022-07-21 02:31:19,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 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) [2022-07-21 02:31:19,964 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2022-07-21 02:31:19,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-07-21 02:31:19,964 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 02:31:19,965 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1] [2022-07-21 02:31:19,990 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-21 02:31:20,183 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 [2022-07-21 02:31:20,184 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 02:31:20,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 02:31:20,185 INFO L85 PathProgramCache]: Analyzing trace with hash -1625670603, now seen corresponding path program 2 times [2022-07-21 02:31:20,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 02:31:20,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892996359] [2022-07-21 02:31:20,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 02:31:20,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 02:31:20,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 02:31:20,269 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-21 02:31:20,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 02:31:20,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892996359] [2022-07-21 02:31:20,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892996359] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 02:31:20,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1551321878] [2022-07-21 02:31:20,270 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 02:31:20,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 02:31:20,271 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 02:31:20,272 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 02:31:20,274 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-21 02:31:20,321 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-21 02:31:20,321 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 02:31:20,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 18 conjunts are in the unsatisfiable core [2022-07-21 02:31:20,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 02:31:20,420 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-21 02:31:20,420 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 02:31:20,543 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-21 02:31:20,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1551321878] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 02:31:20,544 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 02:31:20,544 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2022-07-21 02:31:20,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728758599] [2022-07-21 02:31:20,544 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 02:31:20,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 02:31:20,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 02:31:20,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 02:31:20,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-21 02:31:20,546 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 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) [2022-07-21 02:31:20,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 02:31:20,570 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2022-07-21 02:31:20,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 02:31:20,571 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 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) Word has length 13 [2022-07-21 02:31:20,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 02:31:20,571 INFO L225 Difference]: With dead ends: 14 [2022-07-21 02:31:20,571 INFO L226 Difference]: Without dead ends: 0 [2022-07-21 02:31:20,571 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-07-21 02:31:20,572 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 2 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 02:31:20,573 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 6 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 02:31:20,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-07-21 02:31:20,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-07-21 02:31:20,573 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) [2022-07-21 02:31:20,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-07-21 02:31:20,574 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2022-07-21 02:31:20,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 02:31:20,574 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-21 02:31:20,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 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) [2022-07-21 02:31:20,574 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-07-21 02:31:20,574 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-07-21 02:31:20,577 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-21 02:31:20,603 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-07-21 02:31:20,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-07-21 02:31:20,796 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-07-21 02:31:20,888 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-07-21 02:31:20,889 INFO L899 garLoopResultBuilder]: For program point L29-2(lines 29 33) no Hoare annotation was computed. [2022-07-21 02:31:20,889 INFO L895 garLoopResultBuilder]: At program point L29-3(lines 29 33) the Hoare annotation is: (let ((.cse0 (= ~tmp~0.base |ULTIMATE.start_glob2_~pathlim#1.base|)) (.cse1 (= ~tmp~0.base |ULTIMATE.start_glob2_~p~0#1.base|)) (.cse2 (<= |ULTIMATE.start_glob2_~pathlim#1.offset| ~tmp~0.offset))) (or (and (<= (+ |ULTIMATE.start_glob2_~p~0#1.offset| 4) ~tmp~0.offset) .cse0 .cse1 .cse2) (and (<= 1 |ULTIMATE.start___VERIFIER_assert_~cond#1|) .cse0 .cse1 .cse2))) [2022-07-21 02:31:20,889 INFO L899 garLoopResultBuilder]: For program point L29-4(lines 29 33) no Hoare annotation was computed. [2022-07-21 02:31:20,890 INFO L895 garLoopResultBuilder]: At program point L48(lines 38 49) the Hoare annotation is: (or (and (<= (+ |ULTIMATE.start_glob2_~p~0#1.offset| 4) ~tmp~0.offset) (= ~tmp~0.base |ULTIMATE.start_glob2_~p~0#1.base|)) (not (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0))) [2022-07-21 02:31:20,891 INFO L899 garLoopResultBuilder]: For program point L15(lines 15 17) no Hoare annotation was computed. [2022-07-21 02:31:20,891 INFO L895 garLoopResultBuilder]: At program point L15-2(lines 14 19) the Hoare annotation is: (and (<= 1 |ULTIMATE.start___VERIFIER_assert_~cond#1|) (= ~tmp~0.base |ULTIMATE.start_glob2_~pathlim#1.base|) (= ~tmp~0.base |ULTIMATE.start_glob2_~p~0#1.base|) (<= |ULTIMATE.start_glob2_~pathlim#1.offset| ~tmp~0.offset)) [2022-07-21 02:31:20,892 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-07-21 02:31:20,894 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-07-21 02:31:20,894 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-07-21 02:31:20,894 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2022-07-21 02:31:20,894 INFO L899 garLoopResultBuilder]: For program point L16(line 16) no Hoare annotation was computed. [2022-07-21 02:31:20,895 INFO L895 garLoopResultBuilder]: At program point L35(lines 25 36) the Hoare annotation is: (or (and (<= (+ |ULTIMATE.start_glob2_~p~0#1.offset| 4) ~tmp~0.offset) (= ~tmp~0.base |ULTIMATE.start_glob2_~p~0#1.base|)) (not (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0))) [2022-07-21 02:31:20,900 INFO L356 BasicCegarLoop]: Path program histogram: [2, 1] [2022-07-21 02:31:20,924 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-21 02:31:20,973 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 02:31:20 BoogieIcfgContainer [2022-07-21 02:31:20,973 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-21 02:31:20,974 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-21 02:31:20,974 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-21 02:31:20,975 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-21 02:31:20,975 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 02:31:18" (3/4) ... [2022-07-21 02:31:20,978 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-21 02:31:20,987 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2022-07-21 02:31:20,987 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-07-21 02:31:20,988 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-21 02:31:20,988 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-21 02:31:21,019 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-21 02:31:21,022 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-21 02:31:21,022 INFO L158 Benchmark]: Toolchain (without parser) took 2656.60ms. Allocated memory was 56.6MB in the beginning and 77.6MB in the end (delta: 21.0MB). Free memory was 41.4MB in the beginning and 57.1MB in the end (delta: -15.7MB). Peak memory consumption was 2.6MB. Max. memory is 16.1GB. [2022-07-21 02:31:21,023 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 46.1MB. Free memory was 28.7MB in the beginning and 28.7MB in the end (delta: 27.7kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 02:31:21,024 INFO L158 Benchmark]: CACSL2BoogieTranslator took 198.06ms. Allocated memory is still 56.6MB. Free memory was 41.2MB in the beginning and 31.4MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-21 02:31:21,024 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.63ms. Allocated memory is still 56.6MB. Free memory was 31.4MB in the beginning and 29.9MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 02:31:21,025 INFO L158 Benchmark]: Boogie Preprocessor took 42.11ms. Allocated memory is still 56.6MB. Free memory was 29.9MB in the beginning and 28.7MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-21 02:31:21,025 INFO L158 Benchmark]: RCFGBuilder took 329.27ms. Allocated memory is still 56.6MB. Free memory was 28.7MB in the beginning and 34.6MB in the end (delta: -5.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-07-21 02:31:21,026 INFO L158 Benchmark]: TraceAbstraction took 2006.13ms. Allocated memory was 56.6MB in the beginning and 77.6MB in the end (delta: 21.0MB). Free memory was 33.9MB in the beginning and 59.6MB in the end (delta: -25.7MB). Peak memory consumption was 7.9MB. Max. memory is 16.1GB. [2022-07-21 02:31:21,027 INFO L158 Benchmark]: Witness Printer took 47.62ms. Allocated memory is still 77.6MB. Free memory was 59.6MB in the beginning and 57.1MB in the end (delta: 2.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 02:31:21,029 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 46.1MB. Free memory was 28.7MB in the beginning and 28.7MB in the end (delta: 27.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 198.06ms. Allocated memory is still 56.6MB. Free memory was 41.2MB in the beginning and 31.4MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 27.63ms. Allocated memory is still 56.6MB. Free memory was 31.4MB in the beginning and 29.9MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 42.11ms. Allocated memory is still 56.6MB. Free memory was 29.9MB in the beginning and 28.7MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 329.27ms. Allocated memory is still 56.6MB. Free memory was 28.7MB in the beginning and 34.6MB in the end (delta: -5.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * TraceAbstraction took 2006.13ms. Allocated memory was 56.6MB in the beginning and 77.6MB in the end (delta: 21.0MB). Free memory was 33.9MB in the beginning and 59.6MB in the end (delta: -25.7MB). Peak memory consumption was 7.9MB. Max. memory is 16.1GB. * Witness Printer took 47.62ms. Allocated memory is still 77.6MB. Free memory was 59.6MB in the beginning and 57.1MB in the end (delta: 2.5MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - 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 1 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.9s, OverallIterations: 3, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 30 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 30 mSDsluCounter, 49 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 29 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 38 IncrementalHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 20 mSDtfsCounter, 38 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 60 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=2, InterpolantAutomatonStates: 16, 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, 3 MinimizatonAttempts, 5 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 13 NumberOfFragments, 70 HoareAnnotationTreeSize, 4 FomulaSimplifications, 87 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 35 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 49 NumberOfCodeBlocks, 41 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 64 ConstructedInterpolants, 0 QuantifiedInterpolants, 365 SizeOfPredicates, 26 NumberOfNonLiveVariables, 166 ConjunctsInSsa, 36 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 18/30 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: (((p + 4 <= tmp && tmp == pathlim) && tmp == p) && pathlim <= tmp) || (((1 <= cond && tmp == pathlim) && tmp == p) && pathlim <= tmp) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: ((1 <= cond && tmp == pathlim) && tmp == p) && pathlim <= tmp - InvariantResult [Line: 38]: Loop Invariant Derived loop invariant: (p + 4 <= tmp && tmp == p) || !(cond == 0) - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: (p + 4 <= tmp && tmp == p) || !(cond == 0) RESULT: Ultimate proved your program to be correct! [2022-07-21 02:31:21,063 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE