./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-acceleration/simple_4-2_abstracted.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5317dae 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/loop-acceleration/simple_4-2_abstracted.c -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 78a5505a393cb03f05ca60f6d43cea80afc2a490d92708ee0def83022d38f737 --- Real Ultimate output --- This is Ultimate 0.2.2-?-b5317da-m [2023-02-16 01:21:45,913 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-16 01:21:45,914 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-16 01:21:45,940 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-16 01:21:45,940 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-16 01:21:45,941 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-16 01:21:45,942 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-16 01:21:45,944 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-16 01:21:45,945 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-16 01:21:45,948 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-16 01:21:45,949 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-16 01:21:45,950 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-16 01:21:45,952 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-16 01:21:45,954 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-16 01:21:45,955 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-16 01:21:45,958 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-16 01:21:45,959 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-16 01:21:45,960 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-16 01:21:45,963 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-16 01:21:45,965 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-16 01:21:45,967 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-16 01:21:45,970 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-16 01:21:45,971 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-16 01:21:45,972 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-16 01:21:45,976 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-16 01:21:45,980 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-16 01:21:45,980 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-16 01:21:45,981 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-16 01:21:45,982 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-16 01:21:45,983 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-16 01:21:45,985 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-16 01:21:45,986 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-16 01:21:45,986 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-16 01:21:45,987 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-16 01:21:45,989 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-16 01:21:45,989 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-16 01:21:45,990 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-16 01:21:45,990 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-16 01:21:45,990 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-16 01:21:45,991 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-16 01:21:45,993 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-16 01:21:45,994 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-16 01:21:46,035 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-16 01:21:46,036 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-16 01:21:46,036 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-16 01:21:46,036 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-16 01:21:46,037 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-16 01:21:46,037 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-16 01:21:46,038 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-16 01:21:46,038 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-16 01:21:46,038 INFO L138 SettingsManager]: * Use SBE=true [2023-02-16 01:21:46,038 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-16 01:21:46,039 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-16 01:21:46,039 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-16 01:21:46,039 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-16 01:21:46,040 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-16 01:21:46,040 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-16 01:21:46,040 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-16 01:21:46,040 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-16 01:21:46,040 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-16 01:21:46,040 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-16 01:21:46,041 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-16 01:21:46,041 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-16 01:21:46,041 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-16 01:21:46,041 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-16 01:21:46,041 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-16 01:21:46,042 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-16 01:21:46,042 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-16 01:21:46,042 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-16 01:21:46,042 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-16 01:21:46,042 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-16 01:21:46,043 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-16 01:21:46,043 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-16 01:21:46,043 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-16 01:21:46,048 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-16 01:21:46,048 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-16 01:21:46,049 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-16 01:21:46,049 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 78a5505a393cb03f05ca60f6d43cea80afc2a490d92708ee0def83022d38f737 [2023-02-16 01:21:46,278 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-16 01:21:46,306 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-16 01:21:46,311 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-16 01:21:46,312 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-16 01:21:46,312 INFO L275 PluginConnector]: CDTParser initialized [2023-02-16 01:21:46,314 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-acceleration/simple_4-2_abstracted.c [2023-02-16 01:21:47,475 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-16 01:21:47,654 INFO L351 CDTParser]: Found 1 translation units. [2023-02-16 01:21:47,655 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-acceleration/simple_4-2_abstracted.c [2023-02-16 01:21:47,660 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d7306b4ff/02727b035dd041bb9f6d422fe0aa5d46/FLAG9165c957e [2023-02-16 01:21:47,674 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d7306b4ff/02727b035dd041bb9f6d422fe0aa5d46 [2023-02-16 01:21:47,676 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-16 01:21:47,678 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-16 01:21:47,681 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-16 01:21:47,681 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-16 01:21:47,684 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-16 01:21:47,684 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 01:21:47" (1/1) ... [2023-02-16 01:21:47,687 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78b581de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:21:47, skipping insertion in model container [2023-02-16 01:21:47,688 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 01:21:47" (1/1) ... [2023-02-16 01:21:47,694 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-16 01:21:47,706 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-16 01:21:47,813 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-acceleration/simple_4-2_abstracted.c[740,753] [2023-02-16 01:21:47,821 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-16 01:21:47,831 INFO L203 MainTranslator]: Completed pre-run [2023-02-16 01:21:47,841 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-acceleration/simple_4-2_abstracted.c[740,753] [2023-02-16 01:21:47,843 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-16 01:21:47,851 INFO L208 MainTranslator]: Completed translation [2023-02-16 01:21:47,852 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:21:47 WrapperNode [2023-02-16 01:21:47,852 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-16 01:21:47,853 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-16 01:21:47,853 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-16 01:21:47,854 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-16 01:21:47,859 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:21:47" (1/1) ... [2023-02-16 01:21:47,863 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:21:47" (1/1) ... [2023-02-16 01:21:47,875 INFO L138 Inliner]: procedures = 20, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 23 [2023-02-16 01:21:47,875 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-16 01:21:47,876 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-16 01:21:47,876 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-16 01:21:47,876 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-16 01:21:47,882 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:21:47" (1/1) ... [2023-02-16 01:21:47,882 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:21:47" (1/1) ... [2023-02-16 01:21:47,883 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:21:47" (1/1) ... [2023-02-16 01:21:47,883 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:21:47" (1/1) ... [2023-02-16 01:21:47,885 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:21:47" (1/1) ... [2023-02-16 01:21:47,893 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:21:47" (1/1) ... [2023-02-16 01:21:47,894 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:21:47" (1/1) ... [2023-02-16 01:21:47,894 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:21:47" (1/1) ... [2023-02-16 01:21:47,898 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-16 01:21:47,905 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-16 01:21:47,906 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-16 01:21:47,906 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-16 01:21:47,909 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:21:47" (1/1) ... [2023-02-16 01:21:47,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-16 01:21:47,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 01:21:47,932 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) [2023-02-16 01:21:47,933 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 [2023-02-16 01:21:47,969 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-16 01:21:47,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-16 01:21:47,970 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-16 01:21:47,970 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-16 01:21:48,029 INFO L235 CfgBuilder]: Building ICFG [2023-02-16 01:21:48,032 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-16 01:21:48,161 INFO L276 CfgBuilder]: Performing block encoding [2023-02-16 01:21:48,169 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-16 01:21:48,169 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2023-02-16 01:21:48,173 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 01:21:48 BoogieIcfgContainer [2023-02-16 01:21:48,173 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-16 01:21:48,175 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-16 01:21:48,175 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-16 01:21:48,178 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-16 01:21:48,178 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.02 01:21:47" (1/3) ... [2023-02-16 01:21:48,179 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@456c610 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 01:21:48, skipping insertion in model container [2023-02-16 01:21:48,179 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:21:47" (2/3) ... [2023-02-16 01:21:48,180 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@456c610 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 01:21:48, skipping insertion in model container [2023-02-16 01:21:48,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 01:21:48" (3/3) ... [2023-02-16 01:21:48,189 INFO L112 eAbstractionObserver]: Analyzing ICFG simple_4-2_abstracted.c [2023-02-16 01:21:48,204 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-16 01:21:48,204 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-16 01:21:48,254 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-16 01:21:48,261 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=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@556764e7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-16 01:21:48,262 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-16 01:21:48,265 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.4) internal successors, (14), 11 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) [2023-02-16 01:21:48,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-02-16 01:21:48,270 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 01:21:48,270 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-02-16 01:21:48,271 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 01:21:48,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 01:21:48,274 INFO L85 PathProgramCache]: Analyzing trace with hash 1805028936, now seen corresponding path program 1 times [2023-02-16 01:21:48,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 01:21:48,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613437341] [2023-02-16 01:21:48,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:21:48,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 01:21:48,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:21:48,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 01:21:48,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 01:21:48,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613437341] [2023-02-16 01:21:48,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613437341] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 01:21:48,443 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 01:21:48,444 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-16 01:21:48,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887787488] [2023-02-16 01:21:48,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 01:21:48,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-16 01:21:48,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 01:21:48,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-16 01:21:48,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-16 01:21:48,486 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 1.4) internal successors, (14), 11 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) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2023-02-16 01:21:48,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 01:21:48,509 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2023-02-16 01:21:48,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-16 01:21:48,512 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 7 [2023-02-16 01:21:48,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 01:21:48,517 INFO L225 Difference]: With dead ends: 20 [2023-02-16 01:21:48,518 INFO L226 Difference]: Without dead ends: 8 [2023-02-16 01:21:48,520 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-16 01:21:48,524 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 01:21:48,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 01:21:48,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2023-02-16 01:21:48,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2023-02-16 01:21:48,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 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) [2023-02-16 01:21:48,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2023-02-16 01:21:48,550 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 7 [2023-02-16 01:21:48,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 01:21:48,551 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2023-02-16 01:21:48,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2023-02-16 01:21:48,552 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2023-02-16 01:21:48,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-02-16 01:21:48,552 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 01:21:48,552 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-02-16 01:21:48,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-16 01:21:48,553 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 01:21:48,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 01:21:48,554 INFO L85 PathProgramCache]: Analyzing trace with hash 1805088518, now seen corresponding path program 1 times [2023-02-16 01:21:48,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 01:21:48,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722591664] [2023-02-16 01:21:48,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:21:48,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 01:21:48,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:21:48,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 01:21:48,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 01:21:48,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722591664] [2023-02-16 01:21:48,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722591664] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 01:21:48,870 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 01:21:48,871 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-16 01:21:48,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915713753] [2023-02-16 01:21:48,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 01:21:48,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-16 01:21:48,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 01:21:48,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-16 01:21:48,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-16 01:21:48,874 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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) [2023-02-16 01:21:48,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 01:21:48,893 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2023-02-16 01:21:48,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-16 01:21:48,894 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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 7 [2023-02-16 01:21:48,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 01:21:48,894 INFO L225 Difference]: With dead ends: 9 [2023-02-16 01:21:48,894 INFO L226 Difference]: Without dead ends: 0 [2023-02-16 01:21:48,895 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-16 01:21:48,896 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 1 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 01:21:48,896 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 11 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 01:21:48,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-02-16 01:21:48,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-02-16 01:21:48,897 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) [2023-02-16 01:21:48,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-02-16 01:21:48,898 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2023-02-16 01:21:48,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 01:21:48,898 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-16 01:21:48,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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) [2023-02-16 01:21:48,899 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-02-16 01:21:48,899 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-02-16 01:21:48,901 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-02-16 01:21:48,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-16 01:21:48,903 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-02-16 01:21:48,908 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-02-16 01:21:48,909 INFO L899 garLoopResultBuilder]: For program point L29-1(line 29) no Hoare annotation was computed. [2023-02-16 01:21:48,909 INFO L899 garLoopResultBuilder]: For program point L17(line 17) no Hoare annotation was computed. [2023-02-16 01:21:48,909 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-02-16 01:21:48,909 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2023-02-16 01:21:48,909 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-02-16 01:21:48,910 INFO L899 garLoopResultBuilder]: For program point L26(lines 26 28) no Hoare annotation was computed. [2023-02-16 01:21:48,910 INFO L899 garLoopResultBuilder]: For program point L26-2(lines 22 33) no Hoare annotation was computed. [2023-02-16 01:21:48,910 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2023-02-16 01:21:48,910 INFO L899 garLoopResultBuilder]: For program point L22(lines 22 33) no Hoare annotation was computed. [2023-02-16 01:21:48,910 INFO L899 garLoopResultBuilder]: For program point L16(lines 16 18) no Hoare annotation was computed. [2023-02-16 01:21:48,911 INFO L902 garLoopResultBuilder]: At program point L16-2(lines 15 20) the Hoare annotation is: true [2023-02-16 01:21:48,913 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-02-16 01:21:48,915 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-16 01:21:48,921 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.02 01:21:48 BoogieIcfgContainer [2023-02-16 01:21:48,921 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-16 01:21:48,922 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-16 01:21:48,922 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-16 01:21:48,922 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-16 01:21:48,922 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 01:21:48" (3/4) ... [2023-02-16 01:21:48,925 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-02-16 01:21:48,936 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2023-02-16 01:21:48,941 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-02-16 01:21:48,941 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-02-16 01:21:48,941 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-02-16 01:21:48,983 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-02-16 01:21:48,983 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-16 01:21:48,984 INFO L158 Benchmark]: Toolchain (without parser) took 1305.94ms. Allocated memory is still 115.3MB. Free memory was 67.1MB in the beginning and 59.6MB in the end (delta: 7.6MB). Peak memory consumption was 10.1MB. Max. memory is 16.1GB. [2023-02-16 01:21:48,984 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 115.3MB. Free memory is still 85.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-16 01:21:48,985 INFO L158 Benchmark]: CACSL2BoogieTranslator took 171.82ms. Allocated memory is still 115.3MB. Free memory was 66.7MB in the beginning and 56.7MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-16 01:21:48,985 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.30ms. Allocated memory is still 115.3MB. Free memory was 56.7MB in the beginning and 55.4MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-16 01:21:48,986 INFO L158 Benchmark]: Boogie Preprocessor took 22.21ms. Allocated memory is still 115.3MB. Free memory was 55.4MB in the beginning and 54.6MB in the end (delta: 823.8kB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-16 01:21:48,986 INFO L158 Benchmark]: RCFGBuilder took 267.60ms. Allocated memory is still 115.3MB. Free memory was 54.1MB in the beginning and 45.7MB in the end (delta: 8.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-02-16 01:21:48,986 INFO L158 Benchmark]: TraceAbstraction took 746.06ms. Allocated memory is still 115.3MB. Free memory was 44.9MB in the beginning and 61.7MB in the end (delta: -16.8MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-16 01:21:48,990 INFO L158 Benchmark]: Witness Printer took 61.87ms. Allocated memory is still 115.3MB. Free memory was 61.7MB in the beginning and 59.6MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-16 01:21:48,992 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 115.3MB. Free memory is still 85.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 171.82ms. Allocated memory is still 115.3MB. Free memory was 66.7MB in the beginning and 56.7MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 22.30ms. Allocated memory is still 115.3MB. Free memory was 56.7MB in the beginning and 55.4MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 22.21ms. Allocated memory is still 115.3MB. Free memory was 55.4MB in the beginning and 54.6MB in the end (delta: 823.8kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 267.60ms. Allocated memory is still 115.3MB. Free memory was 54.1MB in the beginning and 45.7MB in the end (delta: 8.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 746.06ms. Allocated memory is still 115.3MB. Free memory was 44.9MB in the beginning and 61.7MB in the end (delta: -16.8MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 61.87ms. Allocated memory is still 115.3MB. Free memory was 61.7MB in the beginning and 59.6MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. 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: 17]: 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, 12 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1 mSDsluCounter, 23 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5 IncrementalHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 17 mSDtfsCounter, 5 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred in iteration=0, InterpolantAutomatonStates: 6, 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 2 NumberOfFragments, 1 HoareAnnotationTreeSize, 1 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 21 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2023-02-16 01:21:49,017 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE