./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/list-ext-properties/test-0158_1-1.i --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/list-ext-properties/test-0158_1-1.i -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 aa779df617b83bdc7632b93a3c3bc0bbfee71559 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-27 05:53:24,863 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 05:53:24,864 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 05:53:24,885 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 05:53:24,885 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 05:53:24,886 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 05:53:24,887 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 05:53:24,889 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 05:53:24,890 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 05:53:24,890 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 05:53:24,891 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 05:53:24,892 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 05:53:24,892 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 05:53:24,893 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 05:53:24,894 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 05:53:24,895 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 05:53:24,895 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 05:53:24,896 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 05:53:24,897 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 05:53:24,898 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 05:53:24,899 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 05:53:24,900 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 05:53:24,901 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 05:53:24,901 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 05:53:24,903 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 05:53:24,903 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 05:53:24,903 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 05:53:24,904 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 05:53:24,904 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 05:53:24,905 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 05:53:24,905 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 05:53:24,905 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 05:53:24,906 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 05:53:24,906 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 05:53:24,907 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 05:53:24,907 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 05:53:24,908 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 05:53:24,908 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 05:53:24,908 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 05:53:24,909 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 05:53:24,909 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 05:53:24,910 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-08-27 05:53:24,925 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 05:53:24,925 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 05:53:24,925 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 05:53:24,925 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 05:53:24,926 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 05:53:24,926 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 05:53:24,927 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 05:53:24,927 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 05:53:24,927 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 05:53:24,927 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 05:53:24,927 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 05:53:24,927 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 05:53:24,928 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 05:53:24,928 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-08-27 05:53:24,928 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-08-27 05:53:24,928 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-08-27 05:53:24,928 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-27 05:53:24,928 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-08-27 05:53:24,929 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 05:53:24,929 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 05:53:24,929 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 05:53:24,929 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 05:53:24,929 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-27 05:53:24,929 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 05:53:24,930 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 05:53:24,930 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-27 05:53:24,930 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 05:53:24,930 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-27 05:53:24,930 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 05:53:24,930 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aa779df617b83bdc7632b93a3c3bc0bbfee71559 [2021-08-27 05:53:25,133 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 05:53:25,149 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 05:53:25,151 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 05:53:25,152 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 05:53:25,154 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 05:53:25,154 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-ext-properties/test-0158_1-1.i [2021-08-27 05:53:25,199 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f791898d/346fc743b64242ed9092c6024657e12a/FLAG1e040f6ce [2021-08-27 05:53:25,564 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 05:53:25,566 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-ext-properties/test-0158_1-1.i [2021-08-27 05:53:25,577 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f791898d/346fc743b64242ed9092c6024657e12a/FLAG1e040f6ce [2021-08-27 05:53:25,933 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f791898d/346fc743b64242ed9092c6024657e12a [2021-08-27 05:53:25,934 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 05:53:25,935 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-27 05:53:25,936 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 05:53:25,936 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 05:53:25,942 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 05:53:25,943 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 05:53:25" (1/1) ... [2021-08-27 05:53:25,943 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3288807f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:53:25, skipping insertion in model container [2021-08-27 05:53:25,943 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 05:53:25" (1/1) ... [2021-08-27 05:53:25,948 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 05:53:25,980 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 05:53:26,183 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 05:53:26,188 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 05:53:26,230 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 05:53:26,251 INFO L208 MainTranslator]: Completed translation [2021-08-27 05:53:26,252 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:53:26 WrapperNode [2021-08-27 05:53:26,252 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 05:53:26,253 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 05:53:26,253 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 05:53:26,253 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 05:53:26,259 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:53:26" (1/1) ... [2021-08-27 05:53:26,260 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:53:26" (1/1) ... [2021-08-27 05:53:26,282 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:53:26" (1/1) ... [2021-08-27 05:53:26,282 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:53:26" (1/1) ... [2021-08-27 05:53:26,296 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:53:26" (1/1) ... [2021-08-27 05:53:26,299 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:53:26" (1/1) ... [2021-08-27 05:53:26,308 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:53:26" (1/1) ... [2021-08-27 05:53:26,311 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 05:53:26,316 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 05:53:26,316 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 05:53:26,316 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 05:53:26,317 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:53:26" (1/1) ... [2021-08-27 05:53:26,322 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 05:53:26,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 05:53:26,336 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 05:53:26,356 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 05:53:26,370 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-08-27 05:53:26,371 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 05:53:26,371 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-08-27 05:53:26,371 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-08-27 05:53:26,372 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-08-27 05:53:26,372 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-08-27 05:53:26,372 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-08-27 05:53:26,372 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-08-27 05:53:26,373 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-08-27 05:53:26,373 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-08-27 05:53:26,373 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-08-27 05:53:26,373 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-08-27 05:53:26,373 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-08-27 05:53:26,374 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-08-27 05:53:26,374 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 05:53:26,374 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-08-27 05:53:26,374 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-08-27 05:53:26,374 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-08-27 05:53:26,374 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-08-27 05:53:26,374 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-08-27 05:53:26,374 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-08-27 05:53:26,375 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-08-27 05:53:26,375 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-08-27 05:53:26,375 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-08-27 05:53:26,375 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-08-27 05:53:26,375 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-08-27 05:53:26,375 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-08-27 05:53:26,375 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-08-27 05:53:26,375 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-08-27 05:53:26,376 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-08-27 05:53:26,376 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-08-27 05:53:26,376 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-08-27 05:53:26,376 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-08-27 05:53:26,376 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-08-27 05:53:26,376 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-08-27 05:53:26,376 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-08-27 05:53:26,377 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-08-27 05:53:26,377 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-08-27 05:53:26,377 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-08-27 05:53:26,377 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-08-27 05:53:26,377 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-08-27 05:53:26,377 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-08-27 05:53:26,377 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-08-27 05:53:26,377 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-08-27 05:53:26,377 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-08-27 05:53:26,378 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-08-27 05:53:26,378 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-08-27 05:53:26,378 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-08-27 05:53:26,378 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-08-27 05:53:26,378 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-08-27 05:53:26,378 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-08-27 05:53:26,379 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-08-27 05:53:26,379 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-08-27 05:53:26,379 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-08-27 05:53:26,379 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-08-27 05:53:26,379 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-08-27 05:53:26,380 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-08-27 05:53:26,380 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-08-27 05:53:26,380 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-08-27 05:53:26,380 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-08-27 05:53:26,380 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-08-27 05:53:26,380 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-08-27 05:53:26,380 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-08-27 05:53:26,380 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-08-27 05:53:26,380 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-08-27 05:53:26,381 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-08-27 05:53:26,381 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-08-27 05:53:26,381 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-08-27 05:53:26,382 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-08-27 05:53:26,382 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-08-27 05:53:26,382 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-08-27 05:53:26,383 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-08-27 05:53:26,383 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-08-27 05:53:26,383 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-08-27 05:53:26,383 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-08-27 05:53:26,383 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-08-27 05:53:26,383 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-08-27 05:53:26,383 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-08-27 05:53:26,383 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-08-27 05:53:26,383 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-08-27 05:53:26,383 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-08-27 05:53:26,384 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-08-27 05:53:26,384 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-08-27 05:53:26,384 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-08-27 05:53:26,384 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-08-27 05:53:26,384 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-08-27 05:53:26,385 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-08-27 05:53:26,385 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-08-27 05:53:26,385 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-08-27 05:53:26,385 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-08-27 05:53:26,385 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-08-27 05:53:26,385 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-08-27 05:53:26,385 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-08-27 05:53:26,385 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-08-27 05:53:26,385 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-08-27 05:53:26,386 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-08-27 05:53:26,386 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-08-27 05:53:26,386 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-08-27 05:53:26,386 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-08-27 05:53:26,386 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-08-27 05:53:26,386 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-08-27 05:53:26,386 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-08-27 05:53:26,386 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-08-27 05:53:26,386 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-08-27 05:53:26,387 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-08-27 05:53:26,387 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-08-27 05:53:26,387 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-08-27 05:53:26,387 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-08-27 05:53:26,387 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-08-27 05:53:26,387 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-08-27 05:53:26,388 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-08-27 05:53:26,388 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-08-27 05:53:26,388 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-08-27 05:53:26,388 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-08-27 05:53:26,389 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-08-27 05:53:26,389 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-08-27 05:53:26,389 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-08-27 05:53:26,389 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-08-27 05:53:26,389 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-08-27 05:53:26,389 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-08-27 05:53:26,389 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-08-27 05:53:26,389 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-08-27 05:53:26,389 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-08-27 05:53:26,390 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-08-27 05:53:26,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-08-27 05:53:26,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-27 05:53:26,390 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-08-27 05:53:26,390 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-08-27 05:53:26,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-27 05:53:26,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-08-27 05:53:26,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-27 05:53:26,393 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 05:53:26,859 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 05:53:26,859 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-08-27 05:53:26,860 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 05:53:26 BoogieIcfgContainer [2021-08-27 05:53:26,860 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 05:53:26,861 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-27 05:53:26,861 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-27 05:53:26,863 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-27 05:53:26,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 05:53:25" (1/3) ... [2021-08-27 05:53:26,864 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bba52f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 05:53:26, skipping insertion in model container [2021-08-27 05:53:26,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:53:26" (2/3) ... [2021-08-27 05:53:26,864 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bba52f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 05:53:26, skipping insertion in model container [2021-08-27 05:53:26,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 05:53:26" (3/3) ... [2021-08-27 05:53:26,865 INFO L111 eAbstractionObserver]: Analyzing ICFG test-0158_1-1.i [2021-08-27 05:53:26,868 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-27 05:53:26,868 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2021-08-27 05:53:26,903 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-27 05:53:26,907 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 05:53:26,908 INFO L340 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2021-08-27 05:53:26,928 INFO L276 IsEmpty]: Start isEmpty. Operand has 38 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 33 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-08-27 05:53:26,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-08-27 05:53:26,933 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:53:26,933 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:53:26,933 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 11 more)] === [2021-08-27 05:53:26,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:53:26,937 INFO L82 PathProgramCache]: Analyzing trace with hash 1320510785, now seen corresponding path program 1 times [2021-08-27 05:53:26,942 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 05:53:26,943 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668707034] [2021-08-27 05:53:26,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:53:26,943 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 05:53:27,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:53:27,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 05:53:27,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:53:27,125 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 05:53:27,125 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 05:53:27,125 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668707034] [2021-08-27 05:53:27,126 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668707034] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 05:53:27,126 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 05:53:27,126 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 05:53:27,127 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241827920] [2021-08-27 05:53:27,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-27 05:53:27,131 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 05:53:27,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-27 05:53:27,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-27 05:53:27,140 INFO L87 Difference]: Start difference. First operand has 38 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 33 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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 05:53:27,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:53:27,220 INFO L93 Difference]: Finished difference Result 32 states and 33 transitions. [2021-08-27 05:53:27,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-27 05:53:27,225 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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 7 [2021-08-27 05:53:27,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:53:27,232 INFO L225 Difference]: With dead ends: 32 [2021-08-27 05:53:27,232 INFO L226 Difference]: Without dead ends: 29 [2021-08-27 05:53:27,233 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 29.4ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-27 05:53:27,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-08-27 05:53:27,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-08-27 05:53:27,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 16 states have (on average 1.6875) internal successors, (27), 25 states have internal predecessors, (27), 2 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 05:53:27,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2021-08-27 05:53:27,251 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 7 [2021-08-27 05:53:27,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:53:27,251 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2021-08-27 05:53:27,252 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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 05:53:27,252 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2021-08-27 05:53:27,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-08-27 05:53:27,252 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:53:27,252 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:53:27,252 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-27 05:53:27,253 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 11 more)] === [2021-08-27 05:53:27,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:53:27,253 INFO L82 PathProgramCache]: Analyzing trace with hash 1320510786, now seen corresponding path program 1 times [2021-08-27 05:53:27,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 05:53:27,254 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651683398] [2021-08-27 05:53:27,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:53:27,254 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 05:53:27,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:53:27,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 05:53:27,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:53:27,334 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 05:53:27,335 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 05:53:27,335 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651683398] [2021-08-27 05:53:27,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651683398] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 05:53:27,335 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 05:53:27,335 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 05:53:27,335 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475531848] [2021-08-27 05:53:27,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-27 05:53:27,336 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 05:53:27,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-27 05:53:27,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-27 05:53:27,337 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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 05:53:27,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:53:27,389 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2021-08-27 05:53:27,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-27 05:53:27,389 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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 7 [2021-08-27 05:53:27,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:53:27,390 INFO L225 Difference]: With dead ends: 23 [2021-08-27 05:53:27,390 INFO L226 Difference]: Without dead ends: 23 [2021-08-27 05:53:27,391 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 30.8ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-27 05:53:27,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-08-27 05:53:27,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-08-27 05:53:27,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 16 states have (on average 1.3125) internal successors, (21), 19 states have internal predecessors, (21), 2 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 05:53:27,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2021-08-27 05:53:27,393 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 7 [2021-08-27 05:53:27,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:53:27,393 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2021-08-27 05:53:27,393 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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 05:53:27,393 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2021-08-27 05:53:27,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-08-27 05:53:27,394 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:53:27,394 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:53:27,394 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-27 05:53:27,394 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr12ASSERT_VIOLATIONMEMORY_FREE === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 11 more)] === [2021-08-27 05:53:27,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:53:27,395 INFO L82 PathProgramCache]: Analyzing trace with hash -1902214687, now seen corresponding path program 1 times [2021-08-27 05:53:27,395 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 05:53:27,395 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896514934] [2021-08-27 05:53:27,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:53:27,396 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 05:53:27,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:53:27,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 05:53:27,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:53:27,541 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 05:53:27,541 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 05:53:27,541 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896514934] [2021-08-27 05:53:27,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896514934] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 05:53:27,542 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 05:53:27,542 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-27 05:53:27,542 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738671502] [2021-08-27 05:53:27,542 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-27 05:53:27,542 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 05:53:27,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-27 05:53:27,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-27 05:53:27,543 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 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 05:53:27,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:53:27,633 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2021-08-27 05:53:27,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-27 05:53:27,634 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 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 14 [2021-08-27 05:53:27,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:53:27,640 INFO L225 Difference]: With dead ends: 22 [2021-08-27 05:53:27,640 INFO L226 Difference]: Without dead ends: 22 [2021-08-27 05:53:27,640 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 62.8ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-08-27 05:53:27,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-08-27 05:53:27,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-08-27 05:53:27,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 16 states have (on average 1.25) internal successors, (20), 18 states have internal predecessors, (20), 2 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 05:53:27,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2021-08-27 05:53:27,644 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 14 [2021-08-27 05:53:27,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:53:27,645 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2021-08-27 05:53:27,645 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 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 05:53:27,645 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2021-08-27 05:53:27,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-08-27 05:53:27,646 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:53:27,646 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:53:27,646 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-27 05:53:27,647 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr13ASSERT_VIOLATIONMEMORY_FREE === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 11 more)] === [2021-08-27 05:53:27,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:53:27,649 INFO L82 PathProgramCache]: Analyzing trace with hash 1160886927, now seen corresponding path program 1 times [2021-08-27 05:53:27,650 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 05:53:27,650 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737624271] [2021-08-27 05:53:27,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:53:27,651 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 05:53:27,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:53:27,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 05:53:27,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:53:27,758 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 05:53:27,759 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 05:53:27,760 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737624271] [2021-08-27 05:53:27,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737624271] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 05:53:27,760 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 05:53:27,760 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-27 05:53:27,762 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169741699] [2021-08-27 05:53:27,763 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-27 05:53:27,763 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 05:53:27,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-27 05:53:27,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-27 05:53:27,765 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 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 05:53:27,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:53:27,823 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2021-08-27 05:53:27,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-27 05:53:27,823 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 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 15 [2021-08-27 05:53:27,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:53:27,824 INFO L225 Difference]: With dead ends: 21 [2021-08-27 05:53:27,824 INFO L226 Difference]: Without dead ends: 21 [2021-08-27 05:53:27,825 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 43.9ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-08-27 05:53:27,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-08-27 05:53:27,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2021-08-27 05:53:27,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 2 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 05:53:27,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2021-08-27 05:53:27,830 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 15 [2021-08-27 05:53:27,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:53:27,830 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2021-08-27 05:53:27,830 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 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 05:53:27,830 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2021-08-27 05:53:27,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-08-27 05:53:27,831 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:53:27,831 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:53:27,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-27 05:53:27,832 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr14ASSERT_VIOLATIONMEMORY_FREE === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 11 more)] === [2021-08-27 05:53:27,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:53:27,832 INFO L82 PathProgramCache]: Analyzing trace with hash 1627756451, now seen corresponding path program 1 times [2021-08-27 05:53:27,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 05:53:27,833 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520037538] [2021-08-27 05:53:27,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:53:27,833 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 05:53:27,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:53:27,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 05:53:27,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:53:27,898 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 05:53:27,899 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 05:53:27,899 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520037538] [2021-08-27 05:53:27,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520037538] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 05:53:27,899 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 05:53:27,899 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-27 05:53:27,900 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310677995] [2021-08-27 05:53:27,900 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-27 05:53:27,900 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 05:53:27,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-27 05:53:27,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-27 05:53:27,901 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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 05:53:27,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:53:27,958 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2021-08-27 05:53:27,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-27 05:53:27,958 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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 16 [2021-08-27 05:53:27,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:53:27,959 INFO L225 Difference]: With dead ends: 20 [2021-08-27 05:53:27,959 INFO L226 Difference]: Without dead ends: 20 [2021-08-27 05:53:27,959 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 39.5ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-08-27 05:53:27,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-08-27 05:53:27,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-08-27 05:53:27,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 16 states have (on average 1.125) internal successors, (18), 16 states have internal predecessors, (18), 2 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 05:53:27,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2021-08-27 05:53:27,960 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 16 [2021-08-27 05:53:27,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:53:27,961 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2021-08-27 05:53:27,961 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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 05:53:27,961 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2021-08-27 05:53:27,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-08-27 05:53:27,961 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:53:27,961 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:53:27,961 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-27 05:53:27,961 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr15ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 11 more)] === [2021-08-27 05:53:27,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:53:27,962 INFO L82 PathProgramCache]: Analyzing trace with hash -1079157486, now seen corresponding path program 1 times [2021-08-27 05:53:27,962 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 05:53:27,962 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867138375] [2021-08-27 05:53:27,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:53:27,962 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 05:53:27,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:53:28,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 05:53:28,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:53:28,177 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 05:53:28,177 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 05:53:28,177 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867138375] [2021-08-27 05:53:28,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867138375] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 05:53:28,177 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 05:53:28,177 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-27 05:53:28,177 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327743152] [2021-08-27 05:53:28,177 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-27 05:53:28,177 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 05:53:28,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-27 05:53:28,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-08-27 05:53:28,178 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 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 05:53:28,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:53:28,297 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2021-08-27 05:53:28,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-27 05:53:28,297 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 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 17 [2021-08-27 05:53:28,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:53:28,297 INFO L225 Difference]: With dead ends: 19 [2021-08-27 05:53:28,297 INFO L226 Difference]: Without dead ends: 0 [2021-08-27 05:53:28,298 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 110.2ms TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-08-27 05:53:28,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-27 05:53:28,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-27 05:53:28,298 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) [2021-08-27 05:53:28,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-27 05:53:28,298 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2021-08-27 05:53:28,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:53:28,299 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-27 05:53:28,299 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 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 05:53:28,299 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-27 05:53:28,299 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-27 05:53:28,301 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr0REQUIRES_VIOLATION [2021-08-27 05:53:28,301 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr1REQUIRES_VIOLATION [2021-08-27 05:53:28,301 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr2REQUIRES_VIOLATION [2021-08-27 05:53:28,301 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr3REQUIRES_VIOLATION [2021-08-27 05:53:28,301 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr4REQUIRES_VIOLATION [2021-08-27 05:53:28,302 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr5REQUIRES_VIOLATION [2021-08-27 05:53:28,302 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr6REQUIRES_VIOLATION [2021-08-27 05:53:28,302 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr7REQUIRES_VIOLATION [2021-08-27 05:53:28,302 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr8REQUIRES_VIOLATION [2021-08-27 05:53:28,302 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr9REQUIRES_VIOLATION [2021-08-27 05:53:28,302 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr10REQUIRES_VIOLATION [2021-08-27 05:53:28,302 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr11REQUIRES_VIOLATION [2021-08-27 05:53:28,302 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr12ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:53:28,302 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr13ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:53:28,302 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr14ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:53:28,302 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr15ENSURES_VIOLATIONMEMORY_LEAK [2021-08-27 05:53:28,302 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-27 05:53:28,305 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-27 05:53:28,306 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 05:53:28 BoogieIcfgContainer [2021-08-27 05:53:28,306 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-27 05:53:28,307 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 05:53:28,307 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 05:53:28,307 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 05:53:28,307 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 05:53:26" (3/4) ... [2021-08-27 05:53:28,309 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-27 05:53:28,313 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure reach_error [2021-08-27 05:53:28,313 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2021-08-27 05:53:28,313 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_32 [2021-08-27 05:53:28,313 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_64 [2021-08-27 05:53:28,313 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint16_identity [2021-08-27 05:53:28,313 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint64_identity [2021-08-27 05:53:28,313 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2021-08-27 05:53:28,313 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint32_identity [2021-08-27 05:53:28,316 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2021-08-27 05:53:28,316 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-08-27 05:53:28,316 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-08-27 05:53:28,316 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-27 05:53:28,334 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-27 05:53:28,335 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 05:53:28,336 INFO L168 Benchmark]: Toolchain (without parser) took 2399.67 ms. Allocated memory was 50.3 MB in the beginning and 98.6 MB in the end (delta: 48.2 MB). Free memory was 25.4 MB in the beginning and 54.8 MB in the end (delta: -29.4 MB). Peak memory consumption was 19.0 MB. Max. memory is 16.1 GB. [2021-08-27 05:53:28,336 INFO L168 Benchmark]: CDTParser took 1.78 ms. Allocated memory is still 50.3 MB. Free memory is still 32.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 05:53:28,336 INFO L168 Benchmark]: CACSL2BoogieTranslator took 315.77 ms. Allocated memory was 50.3 MB in the beginning and 67.1 MB in the end (delta: 16.8 MB). Free memory was 25.2 MB in the beginning and 45.3 MB in the end (delta: -20.1 MB). Peak memory consumption was 5.8 MB. Max. memory is 16.1 GB. [2021-08-27 05:53:28,336 INFO L168 Benchmark]: Boogie Preprocessor took 62.55 ms. Allocated memory is still 67.1 MB. Free memory was 45.3 MB in the beginning and 42.8 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 05:53:28,336 INFO L168 Benchmark]: RCFGBuilder took 544.61 ms. Allocated memory is still 67.1 MB. Free memory was 42.8 MB in the beginning and 33.2 MB in the end (delta: 9.5 MB). Peak memory consumption was 12.8 MB. Max. memory is 16.1 GB. [2021-08-27 05:53:28,337 INFO L168 Benchmark]: TraceAbstraction took 1445.33 ms. Allocated memory was 67.1 MB in the beginning and 98.6 MB in the end (delta: 31.5 MB). Free memory was 32.6 MB in the beginning and 58.2 MB in the end (delta: -25.6 MB). Peak memory consumption was 5.6 MB. Max. memory is 16.1 GB. [2021-08-27 05:53:28,337 INFO L168 Benchmark]: Witness Printer took 27.77 ms. Allocated memory is still 98.6 MB. Free memory was 58.2 MB in the beginning and 54.8 MB in the end (delta: 3.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-27 05:53:28,338 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.78 ms. Allocated memory is still 50.3 MB. Free memory is still 32.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 315.77 ms. Allocated memory was 50.3 MB in the beginning and 67.1 MB in the end (delta: 16.8 MB). Free memory was 25.2 MB in the beginning and 45.3 MB in the end (delta: -20.1 MB). Peak memory consumption was 5.8 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 62.55 ms. Allocated memory is still 67.1 MB. Free memory was 45.3 MB in the beginning and 42.8 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 544.61 ms. Allocated memory is still 67.1 MB. Free memory was 42.8 MB in the beginning and 33.2 MB in the end (delta: 9.5 MB). Peak memory consumption was 12.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1445.33 ms. Allocated memory was 67.1 MB in the beginning and 98.6 MB in the end (delta: 31.5 MB). Free memory was 32.6 MB in the beginning and 58.2 MB in the end (delta: -25.6 MB). Peak memory consumption was 5.6 MB. Max. memory is 16.1 GB. * Witness Printer took 27.77 ms. Allocated memory is still 98.6 MB. Free memory was 58.2 MB in the beginning and 54.8 MB in the end (delta: 3.4 MB). Peak memory consumption was 4.2 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 - PositiveResult [Line: 534]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 534]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 536]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 536]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 538]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 538]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 540]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 540]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 541]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 541]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 543]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 543]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 543]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 543]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 543]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 524]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 56 locations, 16 error locations. Started 1 CEGAR loops. OverallTime: 1402.9ms, OverallIterations: 6, TraceHistogramMax: 1, EmptinessCheckTime: 21.2ms, AutomataDifference: 494.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 6.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 77 SDtfs, 72 SDslu, 131 SDs, 0 SdLazy, 299 SolverSat, 25 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 241.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 316.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred in iteration=0, InterpolantAutomatonStates: 38, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 22.9ms AutomataMinimizationTime, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 15.1ms SsaConstructionTime, 118.5ms SatisfiabilityAnalysisTime, 569.8ms InterpolantComputationTime, 76 NumberOfCodeBlocks, 76 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 70 ConstructedInterpolants, 0 QuantifiedInterpolants, 627 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 16 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-08-27 05:53:28,363 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...