./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-regression/test21-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c 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/ldv-regression/test21-1.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 05085beafc13f38fbda38ea415197838c6c50810d8ce271072546e893cc1f1e6 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 03:19:32,978 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 03:19:32,980 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 03:19:33,020 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 03:19:33,020 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 03:19:33,021 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 03:19:33,021 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 03:19:33,022 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 03:19:33,039 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 03:19:33,040 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 03:19:33,041 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 03:19:33,041 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 03:19:33,042 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 03:19:33,042 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 03:19:33,043 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 03:19:33,043 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 03:19:33,044 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 03:19:33,044 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 03:19:33,045 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 03:19:33,046 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 03:19:33,047 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 03:19:33,048 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 03:19:33,048 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 03:19:33,049 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 03:19:33,050 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 03:19:33,051 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 03:19:33,052 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 03:19:33,055 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 03:19:33,056 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 03:19:33,056 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 03:19:33,057 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 03:19:33,058 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 03:19:33,058 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 03:19:33,059 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 03:19:33,059 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 03:19:33,060 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 03:19:33,061 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 03:19:33,061 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 03:19:33,062 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 03:19:33,062 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 03:19:33,062 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 03:19:33,063 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 03:19:33,065 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 03:19:33,082 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 03:19:33,085 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 03:19:33,086 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 03:19:33,086 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 03:19:33,086 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 03:19:33,086 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 03:19:33,087 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 03:19:33,087 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 03:19:33,087 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 03:19:33,088 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 03:19:33,088 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 03:19:33,088 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 03:19:33,088 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 03:19:33,088 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 03:19:33,089 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 03:19:33,089 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 03:19:33,089 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 03:19:33,089 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 03:19:33,089 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 03:19:33,089 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 03:19:33,089 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 03:19:33,090 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 03:19:33,090 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 03:19:33,090 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 03:19:33,090 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 03:19:33,090 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 03:19:33,091 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 03:19:33,091 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 03:19:33,091 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 03:19:33,091 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 03:19:33,091 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 03:19:33,091 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 03:19:33,092 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 03:19:33,092 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 05085beafc13f38fbda38ea415197838c6c50810d8ce271072546e893cc1f1e6 [2022-07-12 03:19:33,268 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 03:19:33,285 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 03:19:33,287 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 03:19:33,289 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 03:19:33,290 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 03:19:33,291 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-regression/test21-1.c [2022-07-12 03:19:33,337 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/844e3c1e7/5d74d8e8ce3a48669acbfa28c4e67785/FLAG65fa387eb [2022-07-12 03:19:33,732 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 03:19:33,733 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/test21-1.c [2022-07-12 03:19:33,737 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/844e3c1e7/5d74d8e8ce3a48669acbfa28c4e67785/FLAG65fa387eb [2022-07-12 03:19:33,751 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/844e3c1e7/5d74d8e8ce3a48669acbfa28c4e67785 [2022-07-12 03:19:33,753 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 03:19:33,755 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 03:19:33,757 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 03:19:33,757 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 03:19:33,760 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 03:19:33,761 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 03:19:33" (1/1) ... [2022-07-12 03:19:33,762 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15304090 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:19:33, skipping insertion in model container [2022-07-12 03:19:33,763 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 03:19:33" (1/1) ... [2022-07-12 03:19:33,768 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 03:19:33,783 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 03:19:33,978 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/ldv-regression/test21-1.c[892,905] [2022-07-12 03:19:33,981 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 03:19:33,987 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 03:19:34,015 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/ldv-regression/test21-1.c[892,905] [2022-07-12 03:19:34,016 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 03:19:34,044 INFO L208 MainTranslator]: Completed translation [2022-07-12 03:19:34,044 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:19:34 WrapperNode [2022-07-12 03:19:34,044 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 03:19:34,045 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 03:19:34,046 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 03:19:34,046 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 03:19:34,051 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:19:34" (1/1) ... [2022-07-12 03:19:34,058 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:19:34" (1/1) ... [2022-07-12 03:19:34,075 INFO L137 Inliner]: procedures = 16, calls = 23, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 59 [2022-07-12 03:19:34,076 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 03:19:34,077 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 03:19:34,077 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 03:19:34,077 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 03:19:34,082 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:19:34" (1/1) ... [2022-07-12 03:19:34,082 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:19:34" (1/1) ... [2022-07-12 03:19:34,093 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:19:34" (1/1) ... [2022-07-12 03:19:34,093 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:19:34" (1/1) ... [2022-07-12 03:19:34,101 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:19:34" (1/1) ... [2022-07-12 03:19:34,106 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:19:34" (1/1) ... [2022-07-12 03:19:34,107 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:19:34" (1/1) ... [2022-07-12 03:19:34,108 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 03:19:34,113 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 03:19:34,113 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 03:19:34,113 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 03:19:34,114 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:19:34" (1/1) ... [2022-07-12 03:19:34,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 03:19:34,127 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 03:19:34,165 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) [2022-07-12 03:19:34,188 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 [2022-07-12 03:19:34,229 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 03:19:34,229 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 03:19:34,229 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-12 03:19:34,230 INFO L130 BoogieDeclarations]: Found specification of procedure get_dummy [2022-07-12 03:19:34,230 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dummy [2022-07-12 03:19:34,230 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 03:19:34,230 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 03:19:34,230 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-12 03:19:34,274 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 03:19:34,276 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 03:19:34,366 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 03:19:34,370 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 03:19:34,370 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-12 03:19:34,371 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 03:19:34 BoogieIcfgContainer [2022-07-12 03:19:34,371 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 03:19:34,372 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 03:19:34,373 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 03:19:34,375 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 03:19:34,375 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 03:19:33" (1/3) ... [2022-07-12 03:19:34,376 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a2281d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 03:19:34, skipping insertion in model container [2022-07-12 03:19:34,376 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:19:34" (2/3) ... [2022-07-12 03:19:34,376 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a2281d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 03:19:34, skipping insertion in model container [2022-07-12 03:19:34,376 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 03:19:34" (3/3) ... [2022-07-12 03:19:34,377 INFO L111 eAbstractionObserver]: Analyzing ICFG test21-1.c [2022-07-12 03:19:34,387 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 03:19:34,387 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 03:19:34,416 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 03:19:34,421 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@2683fd9c, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@287e10f3 [2022-07-12 03:19:34,421 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 03:19:34,424 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 16 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-12 03:19:34,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-07-12 03:19:34,430 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 03:19:34,430 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 03:19:34,431 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 03:19:34,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 03:19:34,438 INFO L85 PathProgramCache]: Analyzing trace with hash -1198895907, now seen corresponding path program 1 times [2022-07-12 03:19:34,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 03:19:34,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835540960] [2022-07-12 03:19:34,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:19:34,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 03:19:34,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:19:34,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 03:19:34,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:19:34,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 03:19:34,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:19:34,812 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-12 03:19:34,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 03:19:34,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835540960] [2022-07-12 03:19:34,814 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835540960] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 03:19:34,814 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 03:19:34,814 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 03:19:34,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031560195] [2022-07-12 03:19:34,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 03:19:34,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 03:19:34,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 03:19:34,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 03:19:34,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-12 03:19:34,852 INFO L87 Difference]: Start difference. First operand has 20 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 16 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 8 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-12 03:19:35,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 03:19:35,038 INFO L93 Difference]: Finished difference Result 50 states and 54 transitions. [2022-07-12 03:19:35,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-12 03:19:35,040 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 8 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 19 [2022-07-12 03:19:35,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 03:19:35,044 INFO L225 Difference]: With dead ends: 50 [2022-07-12 03:19:35,044 INFO L226 Difference]: Without dead ends: 0 [2022-07-12 03:19:35,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2022-07-12 03:19:35,051 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 30 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 03:19:35,052 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 114 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 03:19:35,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-07-12 03:19:35,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-07-12 03:19:35,064 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) [2022-07-12 03:19:35,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-07-12 03:19:35,066 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2022-07-12 03:19:35,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 03:19:35,066 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-12 03:19:35,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 8 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-12 03:19:35,066 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-07-12 03:19:35,067 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-07-12 03:19:35,068 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-12 03:19:35,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 03:19:35,070 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-07-12 03:19:35,092 INFO L899 garLoopResultBuilder]: For program point get_dummyFINAL(lines 22 25) no Hoare annotation was computed. [2022-07-12 03:19:35,092 INFO L902 garLoopResultBuilder]: At program point get_dummyENTRY(lines 22 25) the Hoare annotation is: true [2022-07-12 03:19:35,092 INFO L899 garLoopResultBuilder]: For program point L24-1(line 24) no Hoare annotation was computed. [2022-07-12 03:19:35,092 INFO L899 garLoopResultBuilder]: For program point get_dummyEXIT(lines 22 25) no Hoare annotation was computed. [2022-07-12 03:19:35,093 INFO L902 garLoopResultBuilder]: At program point L35-2(line 35) the Hoare annotation is: true [2022-07-12 03:19:35,093 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-07-12 03:19:35,093 INFO L899 garLoopResultBuilder]: For program point L35-3(line 35) no Hoare annotation was computed. [2022-07-12 03:19:35,094 INFO L895 garLoopResultBuilder]: At program point L29(lines 27 30) the Hoare annotation is: (and (<= 1 |ULTIMATE.start_check_#res#1|) (= |ULTIMATE.start_main_~pd1~0#1.offset| |ULTIMATE.start_main_~pd2~0#1.offset|) (= |ULTIMATE.start_main_~pd2~0#1.base| |ULTIMATE.start_main_~pd1~0#1.base|)) [2022-07-12 03:19:35,094 INFO L899 garLoopResultBuilder]: For program point L13(lines 13 20) no Hoare annotation was computed. [2022-07-12 03:19:35,094 INFO L895 garLoopResultBuilder]: At program point L38(lines 33 46) the Hoare annotation is: false [2022-07-12 03:19:35,094 INFO L899 garLoopResultBuilder]: For program point L36(lines 36 40) no Hoare annotation was computed. [2022-07-12 03:19:35,095 INFO L899 garLoopResultBuilder]: For program point L36-2(lines 36 40) no Hoare annotation was computed. [2022-07-12 03:19:35,096 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-07-12 03:19:35,096 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-07-12 03:19:35,096 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-07-12 03:19:35,096 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 44) no Hoare annotation was computed. [2022-07-12 03:19:35,097 INFO L902 garLoopResultBuilder]: At program point L45(lines 32 46) the Hoare annotation is: true [2022-07-12 03:19:35,097 INFO L899 garLoopResultBuilder]: For program point L37(lines 37 39) no Hoare annotation was computed. [2022-07-12 03:19:35,097 INFO L902 garLoopResultBuilder]: At program point L35(line 35) the Hoare annotation is: true [2022-07-12 03:19:35,097 INFO L899 garLoopResultBuilder]: For program point L35-1(line 35) no Hoare annotation was computed. [2022-07-12 03:19:35,103 INFO L356 BasicCegarLoop]: Path program histogram: [1] [2022-07-12 03:19:35,112 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-12 03:19:35,129 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.07 03:19:35 BoogieIcfgContainer [2022-07-12 03:19:35,129 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-12 03:19:35,130 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-12 03:19:35,130 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-12 03:19:35,130 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-12 03:19:35,130 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 03:19:34" (3/4) ... [2022-07-12 03:19:35,132 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-12 03:19:35,136 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure get_dummy [2022-07-12 03:19:35,139 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2022-07-12 03:19:35,139 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2022-07-12 03:19:35,139 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-12 03:19:35,139 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-12 03:19:35,154 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (1 <= \result && pd1 == pd2) && pd2 == pd1 [2022-07-12 03:19:35,162 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-12 03:19:35,162 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-12 03:19:35,163 INFO L158 Benchmark]: Toolchain (without parser) took 1407.68ms. Allocated memory is still 113.2MB. Free memory was 79.3MB in the beginning and 86.1MB in the end (delta: -6.8MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 03:19:35,163 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 77.6MB. Free memory is still 35.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 03:19:35,163 INFO L158 Benchmark]: CACSL2BoogieTranslator took 287.62ms. Allocated memory is still 113.2MB. Free memory was 79.3MB in the beginning and 88.6MB in the end (delta: -9.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-12 03:19:35,163 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.63ms. Allocated memory is still 113.2MB. Free memory was 88.6MB in the beginning and 86.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-12 03:19:35,164 INFO L158 Benchmark]: Boogie Preprocessor took 35.49ms. Allocated memory is still 113.2MB. Free memory was 86.8MB in the beginning and 85.8MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-12 03:19:35,164 INFO L158 Benchmark]: RCFGBuilder took 258.73ms. Allocated memory is still 113.2MB. Free memory was 85.8MB in the beginning and 75.4MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-12 03:19:35,164 INFO L158 Benchmark]: TraceAbstraction took 756.58ms. Allocated memory is still 113.2MB. Free memory was 74.6MB in the beginning and 88.9MB in the end (delta: -14.2MB). Peak memory consumption was 44.3MB. Max. memory is 16.1GB. [2022-07-12 03:19:35,164 INFO L158 Benchmark]: Witness Printer took 32.62ms. Allocated memory is still 113.2MB. Free memory was 88.9MB in the beginning and 86.1MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-12 03:19:35,165 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 77.6MB. Free memory is still 35.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 287.62ms. Allocated memory is still 113.2MB. Free memory was 79.3MB in the beginning and 88.6MB in the end (delta: -9.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 30.63ms. Allocated memory is still 113.2MB. Free memory was 88.6MB in the beginning and 86.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 35.49ms. Allocated memory is still 113.2MB. Free memory was 86.8MB in the beginning and 85.8MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 258.73ms. Allocated memory is still 113.2MB. Free memory was 85.8MB in the beginning and 75.4MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 756.58ms. Allocated memory is still 113.2MB. Free memory was 74.6MB in the beginning and 88.9MB in the end (delta: -14.2MB). Peak memory consumption was 44.3MB. Max. memory is 16.1GB. * Witness Printer took 32.62ms. Allocated memory is still 113.2MB. Free memory was 88.9MB in the beginning and 86.1MB in the end (delta: 2.7MB). 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: 44]: 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 2 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, OverallIterations: 1, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 32 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 30 mSDsluCounter, 114 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 98 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 92 IncrementalHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 16 mSDtfsCounter, 92 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, InterpolantAutomatonStates: 12, 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 8 PreInvPairs, 15 NumberOfFragments, 15 HoareAnnotationTreeSize, 8 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 17 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 19 NumberOfCodeBlocks, 19 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 82 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 4/4 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: 27]: Loop Invariant Derived loop invariant: (1 <= \result && pd1 == pd2) && pd2 == pd1 - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 33]: Loop Invariant Derived loop invariant: 0 RESULT: Ultimate proved your program to be correct! [2022-07-12 03:19:35,195 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