./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/loops/invert_string-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 20ed64ec 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/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/loops/invert_string-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 87b189dc1f4e4e7b15d899fcbb97cc91a55d1376 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Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref) --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-27 07:45:59,274 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 07:45:59,276 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 07:45:59,301 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 07:45:59,301 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 07:45:59,302 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 07:45:59,303 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 07:45:59,305 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 07:45:59,306 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 07:45:59,307 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 07:45:59,307 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 07:45:59,308 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 07:45:59,309 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 07:45:59,309 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 07:45:59,310 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 07:45:59,311 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 07:45:59,312 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 07:45:59,312 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 07:45:59,313 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 07:45:59,315 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 07:45:59,316 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 07:45:59,317 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 07:45:59,318 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 07:45:59,318 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 07:45:59,320 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 07:45:59,320 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 07:45:59,320 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 07:45:59,321 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 07:45:59,321 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 07:45:59,322 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 07:45:59,322 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 07:45:59,323 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 07:45:59,323 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 07:45:59,324 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 07:45:59,325 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 07:45:59,325 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 07:45:59,325 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 07:45:59,326 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 07:45:59,326 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 07:45:59,326 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 07:45:59,327 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 07:45:59,328 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-08-27 07:45:59,343 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 07:45:59,344 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 07:45:59,344 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 07:45:59,344 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 07:45:59,345 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 07:45:59,345 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 07:45:59,345 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 07:45:59,346 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 07:45:59,346 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 07:45:59,346 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 07:45:59,346 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 07:45:59,346 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 07:45:59,347 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 07:45:59,347 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-08-27 07:45:59,347 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-08-27 07:45:59,347 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-08-27 07:45:59,347 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-27 07:45:59,348 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-08-27 07:45:59,348 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 07:45:59,348 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 07:45:59,348 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 07:45:59,349 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 07:45:59,349 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-27 07:45:59,349 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 07:45:59,349 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 07:45:59,349 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-27 07:45:59,350 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 07:45:59,350 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-27 07:45:59,350 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 07:45:59,350 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 87b189dc1f4e4e7b15d899fcbb97cc91a55d1376 [2021-08-27 07:45:59,560 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 07:45:59,573 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 07:45:59,575 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 07:45:59,576 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 07:45:59,576 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 07:45:59,577 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops/invert_string-2.c [2021-08-27 07:45:59,631 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c18f9daa3/a4095773eeaa4a1d90feec9648cfa9f5/FLAGee102f70f [2021-08-27 07:45:59,969 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 07:45:59,970 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/invert_string-2.c [2021-08-27 07:45:59,977 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c18f9daa3/a4095773eeaa4a1d90feec9648cfa9f5/FLAGee102f70f [2021-08-27 07:45:59,996 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c18f9daa3/a4095773eeaa4a1d90feec9648cfa9f5 [2021-08-27 07:45:59,998 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 07:46:00,000 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-27 07:46:00,002 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 07:46:00,002 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 07:46:00,005 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 07:46:00,005 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 07:45:59" (1/1) ... [2021-08-27 07:46:00,006 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f986a6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:46:00, skipping insertion in model container [2021-08-27 07:46:00,006 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 07:45:59" (1/1) ... [2021-08-27 07:46:00,010 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 07:46:00,019 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 07:46:00,123 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/invert_string-2.c[327,340] [2021-08-27 07:46:00,133 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 07:46:00,138 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 07:46:00,145 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/invert_string-2.c[327,340] [2021-08-27 07:46:00,149 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 07:46:00,156 INFO L208 MainTranslator]: Completed translation [2021-08-27 07:46:00,159 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:46:00 WrapperNode [2021-08-27 07:46:00,159 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 07:46:00,165 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 07:46:00,165 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 07:46:00,165 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 07:46:00,223 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:46:00" (1/1) ... [2021-08-27 07:46:00,223 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:46:00" (1/1) ... [2021-08-27 07:46:00,228 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:46:00" (1/1) ... [2021-08-27 07:46:00,228 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:46:00" (1/1) ... [2021-08-27 07:46:00,232 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:46:00" (1/1) ... [2021-08-27 07:46:00,234 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:46:00" (1/1) ... [2021-08-27 07:46:00,235 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:46:00" (1/1) ... [2021-08-27 07:46:00,236 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 07:46:00,245 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 07:46:00,245 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 07:46:00,245 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 07:46:00,245 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:46:00" (1/1) ... [2021-08-27 07:46:00,261 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 07:46:00,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 07:46:00,286 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) [2021-08-27 07:46:00,289 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 [2021-08-27 07:46:00,325 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-08-27 07:46:00,326 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 07:46:00,326 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-08-27 07:46:00,327 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-08-27 07:46:00,327 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-08-27 07:46:00,328 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-08-27 07:46:00,328 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-08-27 07:46:00,329 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-08-27 07:46:00,329 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 07:46:00,329 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-08-27 07:46:00,329 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2021-08-27 07:46:00,329 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2021-08-27 07:46:00,330 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-08-27 07:46:00,330 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-27 07:46:00,330 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-08-27 07:46:00,330 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-27 07:46:00,331 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-08-27 07:46:00,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-27 07:46:00,332 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 07:46:00,549 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 07:46:00,549 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-08-27 07:46:00,551 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 07:46:00 BoogieIcfgContainer [2021-08-27 07:46:00,551 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 07:46:00,552 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-27 07:46:00,552 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-27 07:46:00,554 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-27 07:46:00,554 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 07:45:59" (1/3) ... [2021-08-27 07:46:00,554 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22a44315 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 07:46:00, skipping insertion in model container [2021-08-27 07:46:00,555 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:46:00" (2/3) ... [2021-08-27 07:46:00,555 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22a44315 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 07:46:00, skipping insertion in model container [2021-08-27 07:46:00,555 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 07:46:00" (3/3) ... [2021-08-27 07:46:00,556 INFO L111 eAbstractionObserver]: Analyzing ICFG invert_string-2.c [2021-08-27 07:46:00,558 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-27 07:46:00,559 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2021-08-27 07:46:00,597 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-27 07:46:00,601 INFO L339 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=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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, mLoopAccelerationTechnique=FAST_UPR [2021-08-27 07:46:00,601 INFO L340 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2021-08-27 07:46:00,610 INFO L276 IsEmpty]: Start isEmpty. Operand has 48 states, 27 states have (on average 1.7777777777777777) internal successors, (48), 41 states have internal predecessors, (48), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-27 07:46:00,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-08-27 07:46:00,614 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:46:00,614 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 07:46:00,615 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr2REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 9 more)] === [2021-08-27 07:46:00,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:46:00,618 INFO L82 PathProgramCache]: Analyzing trace with hash -1605601811, now seen corresponding path program 1 times [2021-08-27 07:46:00,623 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:46:00,624 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778901898] [2021-08-27 07:46:00,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:46:00,625 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:46:00,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:46:00,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:46:00,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:46:00,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 07:46:00,761 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:46:00,761 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778901898] [2021-08-27 07:46:00,762 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778901898] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 07:46:00,762 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 07:46:00,762 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 07:46:00,763 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856868486] [2021-08-27 07:46:00,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-27 07:46:00,766 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:46:00,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 07:46:00,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 07:46:00,775 INFO L87 Difference]: Start difference. First operand has 48 states, 27 states have (on average 1.7777777777777777) internal successors, (48), 41 states have internal predecessors, (48), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 07:46:00,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:46:00,850 INFO L93 Difference]: Finished difference Result 48 states and 50 transitions. [2021-08-27 07:46:00,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 07:46:00,851 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 8 [2021-08-27 07:46:00,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:46:00,855 INFO L225 Difference]: With dead ends: 48 [2021-08-27 07:46:00,855 INFO L226 Difference]: Without dead ends: 45 [2021-08-27 07:46:00,856 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 21.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 07:46:00,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-08-27 07:46:00,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2021-08-27 07:46:00,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 26 states have (on average 1.6153846153846154) internal successors, (42), 39 states have internal predecessors, (42), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-08-27 07:46:00,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 47 transitions. [2021-08-27 07:46:00,875 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 47 transitions. Word has length 8 [2021-08-27 07:46:00,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:46:00,875 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 47 transitions. [2021-08-27 07:46:00,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 07:46:00,876 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 47 transitions. [2021-08-27 07:46:00,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-08-27 07:46:00,876 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:46:00,877 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 07:46:00,877 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-27 07:46:00,877 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr2REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 9 more)] === [2021-08-27 07:46:00,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:46:00,880 INFO L82 PathProgramCache]: Analyzing trace with hash -1605602121, now seen corresponding path program 1 times [2021-08-27 07:46:00,881 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:46:00,881 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442974967] [2021-08-27 07:46:00,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:46:00,882 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:46:00,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:46:01,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:46:01,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:46:01,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 07:46:01,013 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:46:01,013 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442974967] [2021-08-27 07:46:01,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442974967] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 07:46:01,013 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 07:46:01,013 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 07:46:01,014 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231082969] [2021-08-27 07:46:01,014 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-27 07:46:01,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:46:01,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-27 07:46:01,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-27 07:46:01,038 INFO L87 Difference]: Start difference. First operand 45 states and 47 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 07:46:01,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:46:01,138 INFO L93 Difference]: Finished difference Result 41 states and 43 transitions. [2021-08-27 07:46:01,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-27 07:46:01,139 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 8 [2021-08-27 07:46:01,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:46:01,140 INFO L225 Difference]: With dead ends: 41 [2021-08-27 07:46:01,140 INFO L226 Difference]: Without dead ends: 41 [2021-08-27 07:46:01,141 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 32.3ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-27 07:46:01,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-08-27 07:46:01,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2021-08-27 07:46:01,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 26 states have (on average 1.4615384615384615) internal successors, (38), 35 states have internal predecessors, (38), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-08-27 07:46:01,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 43 transitions. [2021-08-27 07:46:01,152 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 43 transitions. Word has length 8 [2021-08-27 07:46:01,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:46:01,152 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 43 transitions. [2021-08-27 07:46:01,152 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 07:46:01,152 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 43 transitions. [2021-08-27 07:46:01,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-08-27 07:46:01,153 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:46:01,153 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 07:46:01,153 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-27 07:46:01,153 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr3REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 9 more)] === [2021-08-27 07:46:01,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:46:01,154 INFO L82 PathProgramCache]: Analyzing trace with hash -1605602120, now seen corresponding path program 1 times [2021-08-27 07:46:01,154 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:46:01,155 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18929272] [2021-08-27 07:46:01,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:46:01,155 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:46:01,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 07:46:01,198 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 07:46:01,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 07:46:01,223 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 07:46:01,223 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-08-27 07:46:01,224 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr3REQUIRES_VIOLATION [2021-08-27 07:46:01,225 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION [2021-08-27 07:46:01,226 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION [2021-08-27 07:46:01,226 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2REQUIRES_VIOLATION [2021-08-27 07:46:01,226 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4REQUIRES_VIOLATION [2021-08-27 07:46:01,226 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr5REQUIRES_VIOLATION [2021-08-27 07:46:01,226 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr6REQUIRES_VIOLATION [2021-08-27 07:46:01,227 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr7REQUIRES_VIOLATION [2021-08-27 07:46:01,227 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr8REQUIRES_VIOLATION [2021-08-27 07:46:01,227 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr9REQUIRES_VIOLATION [2021-08-27 07:46:01,227 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr10REQUIRES_VIOLATION [2021-08-27 07:46:01,227 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr11REQUIRES_VIOLATION [2021-08-27 07:46:01,228 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr12ENSURES_VIOLATIONMEMORY_LEAK [2021-08-27 07:46:01,228 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK [2021-08-27 07:46:01,228 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-27 07:46:01,232 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-27 07:46:01,242 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 07:46:01 BoogieIcfgContainer [2021-08-27 07:46:01,242 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-27 07:46:01,243 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 07:46:01,243 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 07:46:01,243 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 07:46:01,243 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 07:46:00" (3/4) ... [2021-08-27 07:46:01,244 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-08-27 07:46:01,279 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-27 07:46:01,279 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 07:46:01,281 INFO L168 Benchmark]: Toolchain (without parser) took 1280.37 ms. Allocated memory was 62.9 MB in the beginning and 94.4 MB in the end (delta: 31.5 MB). Free memory was 48.0 MB in the beginning and 54.4 MB in the end (delta: -6.5 MB). Peak memory consumption was 23.9 MB. Max. memory is 16.1 GB. [2021-08-27 07:46:01,281 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 46.1 MB. Free memory is still 28.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 07:46:01,282 INFO L168 Benchmark]: CACSL2BoogieTranslator took 162.88 ms. Allocated memory is still 62.9 MB. Free memory was 47.7 MB in the beginning and 38.0 MB in the end (delta: 9.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-08-27 07:46:01,283 INFO L168 Benchmark]: Boogie Preprocessor took 71.09 ms. Allocated memory is still 62.9 MB. Free memory was 38.0 MB in the beginning and 46.3 MB in the end (delta: -8.2 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-08-27 07:46:01,285 INFO L168 Benchmark]: RCFGBuilder took 306.21 ms. Allocated memory is still 62.9 MB. Free memory was 46.0 MB in the beginning and 26.3 MB in the end (delta: 19.6 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2021-08-27 07:46:01,286 INFO L168 Benchmark]: TraceAbstraction took 690.44 ms. Allocated memory was 62.9 MB in the beginning and 94.4 MB in the end (delta: 31.5 MB). Free memory was 26.0 MB in the beginning and 55.9 MB in the end (delta: -29.8 MB). Peak memory consumption was 2.3 MB. Max. memory is 16.1 GB. [2021-08-27 07:46:01,288 INFO L168 Benchmark]: Witness Printer took 36.88 ms. Allocated memory is still 94.4 MB. Free memory was 55.9 MB in the beginning and 54.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 07:46:01,293 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 46.1 MB. Free memory is still 28.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 162.88 ms. Allocated memory is still 62.9 MB. Free memory was 47.7 MB in the beginning and 38.0 MB in the end (delta: 9.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 71.09 ms. Allocated memory is still 62.9 MB. Free memory was 38.0 MB in the beginning and 46.3 MB in the end (delta: -8.2 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * RCFGBuilder took 306.21 ms. Allocated memory is still 62.9 MB. Free memory was 46.0 MB in the beginning and 26.3 MB in the end (delta: 19.6 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 690.44 ms. Allocated memory was 62.9 MB in the beginning and 94.4 MB in the end (delta: 31.5 MB). Free memory was 26.0 MB in the beginning and 55.9 MB in the end (delta: -29.8 MB). Peak memory consumption was 2.3 MB. Max. memory is 16.1 GB. * Witness Printer took 36.88 ms. Allocated memory is still 94.4 MB. Free memory was 55.9 MB in the beginning and 54.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 23]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L15] int MAX = __VERIFIER_nondet_uint(); [L16] char str1[MAX], str2[MAX]; [L17] int cont, i, j; [L18] cont = 0 [L20] i=0 VAL [cont=0, i=0, MAX=-1, str1={7:0}, str2={3:0}] [L20] COND FALSE !(i