./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/array-memsafety/openbsd_cbzero-alloca-2.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/array-memsafety/openbsd_cbzero-alloca-2.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 822411a57a10ce043cb0121fce52bdc7e9506783 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 04:49:39,118 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 04:49:39,121 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 04:49:39,159 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 04:49:39,160 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 04:49:39,162 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 04:49:39,163 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 04:49:39,167 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 04:49:39,169 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 04:49:39,172 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 04:49:39,173 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 04:49:39,176 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 04:49:39,176 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 04:49:39,178 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 04:49:39,179 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 04:49:39,182 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 04:49:39,183 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 04:49:39,184 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 04:49:39,185 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 04:49:39,190 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 04:49:39,191 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 04:49:39,192 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 04:49:39,193 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 04:49:39,194 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 04:49:39,197 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 04:49:39,197 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 04:49:39,198 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 04:49:39,198 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 04:49:39,198 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 04:49:39,199 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 04:49:39,199 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 04:49:39,200 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 04:49:39,200 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 04:49:39,200 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 04:49:39,201 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 04:49:39,201 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 04:49:39,201 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 04:49:39,202 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 04:49:39,202 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 04:49:39,202 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 04:49:39,203 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 04:49:39,207 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-08-27 04:49:39,233 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 04:49:39,233 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 04:49:39,234 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 04:49:39,234 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 04:49:39,236 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 04:49:39,236 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 04:49:39,236 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 04:49:39,236 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 04:49:39,236 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 04:49:39,236 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 04:49:39,237 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 04:49:39,237 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 04:49:39,237 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 04:49:39,237 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-08-27 04:49:39,238 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-08-27 04:49:39,238 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-08-27 04:49:39,238 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-27 04:49:39,238 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-08-27 04:49:39,238 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 04:49:39,238 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 04:49:39,238 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 04:49:39,239 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 04:49:39,239 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-27 04:49:39,239 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 04:49:39,239 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 04:49:39,239 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-27 04:49:39,239 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 04:49:39,240 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-27 04:49:39,240 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 04:49:39,240 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 822411a57a10ce043cb0121fce52bdc7e9506783 [2021-08-27 04:49:39,486 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 04:49:39,502 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 04:49:39,503 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 04:49:39,504 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 04:49:39,508 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 04:49:39,509 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/openbsd_cbzero-alloca-2.i [2021-08-27 04:49:39,561 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3cd035d9b/2cc7ec7abd8e4e6d8f5f787ffdb1fcdf/FLAG61539ee87 [2021-08-27 04:49:39,948 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 04:49:39,948 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-memsafety/openbsd_cbzero-alloca-2.i [2021-08-27 04:49:39,960 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3cd035d9b/2cc7ec7abd8e4e6d8f5f787ffdb1fcdf/FLAG61539ee87 [2021-08-27 04:49:39,972 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3cd035d9b/2cc7ec7abd8e4e6d8f5f787ffdb1fcdf [2021-08-27 04:49:39,974 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 04:49:39,976 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-27 04:49:39,978 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 04:49:39,979 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 04:49:39,981 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 04:49:39,982 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:49:39" (1/1) ... [2021-08-27 04:49:39,982 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d2d69f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:49:39, skipping insertion in model container [2021-08-27 04:49:39,982 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:49:39" (1/1) ... [2021-08-27 04:49:39,987 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 04:49:40,024 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 04:49:40,282 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 04:49:40,287 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 04:49:40,320 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 04:49:40,340 INFO L208 MainTranslator]: Completed translation [2021-08-27 04:49:40,340 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:49:40 WrapperNode [2021-08-27 04:49:40,340 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 04:49:40,341 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 04:49:40,341 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 04:49:40,341 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 04:49:40,348 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:49:40" (1/1) ... [2021-08-27 04:49:40,348 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:49:40" (1/1) ... [2021-08-27 04:49:40,364 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:49:40" (1/1) ... [2021-08-27 04:49:40,364 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:49:40" (1/1) ... [2021-08-27 04:49:40,381 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:49:40" (1/1) ... [2021-08-27 04:49:40,387 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:49:40" (1/1) ... [2021-08-27 04:49:40,388 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:49:40" (1/1) ... [2021-08-27 04:49:40,391 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 04:49:40,392 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 04:49:40,392 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 04:49:40,392 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 04:49:40,397 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:49:40" (1/1) ... [2021-08-27 04:49:40,402 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 04:49:40,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 04:49:40,419 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 04:49:40,434 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 04:49:40,446 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-08-27 04:49:40,447 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 04:49:40,447 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-08-27 04:49:40,447 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-08-27 04:49:40,447 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-08-27 04:49:40,447 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-08-27 04:49:40,447 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-08-27 04:49:40,447 INFO L138 BoogieDeclarations]: Found implementation of procedure cbzero [2021-08-27 04:49:40,447 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-08-27 04:49:40,447 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-08-27 04:49:40,447 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-08-27 04:49:40,447 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-08-27 04:49:40,447 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-08-27 04:49:40,447 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-08-27 04:49:40,447 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-08-27 04:49:40,448 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-08-27 04:49:40,448 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-08-27 04:49:40,448 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-08-27 04:49:40,448 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-08-27 04:49:40,448 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-08-27 04:49:40,448 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-08-27 04:49:40,448 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-08-27 04:49:40,448 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-08-27 04:49:40,448 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-08-27 04:49:40,448 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-08-27 04:49:40,448 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-08-27 04:49:40,448 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-08-27 04:49:40,449 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-08-27 04:49:40,449 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-08-27 04:49:40,449 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-08-27 04:49:40,449 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-08-27 04:49:40,449 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-08-27 04:49:40,449 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-08-27 04:49:40,449 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-08-27 04:49:40,450 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-08-27 04:49:40,450 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-08-27 04:49:40,450 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-08-27 04:49:40,450 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-08-27 04:49:40,450 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-08-27 04:49:40,450 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-08-27 04:49:40,450 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-08-27 04:49:40,451 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-08-27 04:49:40,451 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-08-27 04:49:40,451 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-08-27 04:49:40,451 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-08-27 04:49:40,451 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-08-27 04:49:40,451 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-08-27 04:49:40,451 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-08-27 04:49:40,452 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-08-27 04:49:40,452 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-08-27 04:49:40,452 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-08-27 04:49:40,452 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-08-27 04:49:40,452 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-08-27 04:49:40,453 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-08-27 04:49:40,453 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-08-27 04:49:40,453 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-08-27 04:49:40,453 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-08-27 04:49:40,453 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-08-27 04:49:40,453 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-08-27 04:49:40,453 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-08-27 04:49:40,453 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-08-27 04:49:40,454 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-08-27 04:49:40,454 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-08-27 04:49:40,454 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-08-27 04:49:40,454 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-08-27 04:49:40,454 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-08-27 04:49:40,454 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-08-27 04:49:40,454 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-08-27 04:49:40,454 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-08-27 04:49:40,455 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-08-27 04:49:40,455 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-08-27 04:49:40,455 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-08-27 04:49:40,455 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-08-27 04:49:40,455 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-08-27 04:49:40,455 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-08-27 04:49:40,455 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-08-27 04:49:40,456 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-08-27 04:49:40,456 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-08-27 04:49:40,456 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-08-27 04:49:40,456 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-08-27 04:49:40,456 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-08-27 04:49:40,457 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-08-27 04:49:40,457 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-08-27 04:49:40,457 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-08-27 04:49:40,457 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-08-27 04:49:40,457 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-08-27 04:49:40,457 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-08-27 04:49:40,458 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-08-27 04:49:40,458 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-08-27 04:49:40,458 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-08-27 04:49:40,458 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-08-27 04:49:40,458 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-08-27 04:49:40,458 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-08-27 04:49:40,458 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-08-27 04:49:40,458 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-08-27 04:49:40,458 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-08-27 04:49:40,459 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-08-27 04:49:40,459 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-08-27 04:49:40,459 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-08-27 04:49:40,459 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-08-27 04:49:40,459 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-08-27 04:49:40,459 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-08-27 04:49:40,459 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-08-27 04:49:40,459 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-08-27 04:49:40,460 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-08-27 04:49:40,460 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-08-27 04:49:40,460 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-08-27 04:49:40,460 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-08-27 04:49:40,460 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-08-27 04:49:40,460 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-08-27 04:49:40,460 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-08-27 04:49:40,461 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-08-27 04:49:40,461 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-08-27 04:49:40,462 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-08-27 04:49:40,462 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-08-27 04:49:40,462 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-08-27 04:49:40,462 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-08-27 04:49:40,462 INFO L130 BoogieDeclarations]: Found specification of procedure cbzero [2021-08-27 04:49:40,462 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-27 04:49:40,462 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-08-27 04:49:40,463 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 04:49:40,463 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-27 04:49:40,463 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-08-27 04:49:40,463 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 04:49:40,463 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-08-27 04:49:40,774 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 04:49:40,774 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-08-27 04:49:40,775 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:49:40 BoogieIcfgContainer [2021-08-27 04:49:40,776 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 04:49:40,777 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-27 04:49:40,777 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-27 04:49:40,779 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-27 04:49:40,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 04:49:39" (1/3) ... [2021-08-27 04:49:40,779 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f480233 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 04:49:40, skipping insertion in model container [2021-08-27 04:49:40,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:49:40" (2/3) ... [2021-08-27 04:49:40,780 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f480233 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 04:49:40, skipping insertion in model container [2021-08-27 04:49:40,780 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:49:40" (3/3) ... [2021-08-27 04:49:40,781 INFO L111 eAbstractionObserver]: Analyzing ICFG openbsd_cbzero-alloca-2.i [2021-08-27 04:49:40,784 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-27 04:49:40,788 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-08-27 04:49:40,814 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-27 04:49:40,818 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 04:49:40,818 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-08-27 04:49:40,827 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 18 states have internal predecessors, (23), 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 04:49:40,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-27 04:49:40,831 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 04:49:40,832 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 04:49:40,832 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ENSURES_VIOLATIONMEMORY_LEAK === [cbzeroErr0REQUIRES_VIOLATION, cbzeroErr1REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-27 04:49:40,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 04:49:40,836 INFO L82 PathProgramCache]: Analyzing trace with hash 1664038058, now seen corresponding path program 1 times [2021-08-27 04:49:40,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 04:49:40,845 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485653792] [2021-08-27 04:49:40,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:49:40,846 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 04:49:40,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:49:41,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 04:49:41,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:49:41,025 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 04:49:41,026 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 04:49:41,026 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485653792] [2021-08-27 04:49:41,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485653792] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 04:49:41,027 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 04:49:41,027 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-27 04:49:41,028 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373242946] [2021-08-27 04:49:41,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-27 04:49:41,035 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 04:49:41,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 04:49:41,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 04:49:41,047 INFO L87 Difference]: Start difference. First operand has 25 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 18 states have internal predecessors, (23), 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 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 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 04:49:41,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 04:49:41,156 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2021-08-27 04:49:41,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-27 04:49:41,157 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 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 10 [2021-08-27 04:49:41,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 04:49:41,161 INFO L225 Difference]: With dead ends: 28 [2021-08-27 04:49:41,161 INFO L226 Difference]: Without dead ends: 23 [2021-08-27 04:49:41,163 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 45.6ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-08-27 04:49:41,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-08-27 04:49:41,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2021-08-27 04:49:41,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 16 states have internal predecessors, (19), 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 04:49:41,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2021-08-27 04:49:41,185 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 10 [2021-08-27 04:49:41,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 04:49:41,185 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2021-08-27 04:49:41,186 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 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 04:49:41,186 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2021-08-27 04:49:41,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-08-27 04:49:41,187 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 04:49:41,187 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 04:49:41,187 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-27 04:49:41,188 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting cbzeroErr0REQUIRES_VIOLATION === [cbzeroErr0REQUIRES_VIOLATION, cbzeroErr1REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-27 04:49:41,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 04:49:41,188 INFO L82 PathProgramCache]: Analyzing trace with hash 469198071, now seen corresponding path program 1 times [2021-08-27 04:49:41,188 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 04:49:41,188 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163155782] [2021-08-27 04:49:41,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:49:41,189 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 04:49:41,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:49:41,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 04:49:41,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:49:41,309 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 04:49:41,309 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 04:49:41,310 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163155782] [2021-08-27 04:49:41,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163155782] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 04:49:41,310 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 04:49:41,311 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-27 04:49:41,311 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339358680] [2021-08-27 04:49:41,312 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-27 04:49:41,312 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 04:49:41,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-27 04:49:41,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-27 04:49:41,314 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand has 7 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:49:41,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 04:49:41,397 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2021-08-27 04:49:41,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-27 04:49:41,398 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 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 04:49:41,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 04:49:41,398 INFO L225 Difference]: With dead ends: 21 [2021-08-27 04:49:41,398 INFO L226 Difference]: Without dead ends: 21 [2021-08-27 04:49:41,399 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 50.0ms TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-08-27 04:49:41,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-08-27 04:49:41,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2021-08-27 04:49:41,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 15 states have internal predecessors, (18), 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 04:49:41,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2021-08-27 04:49:41,401 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 14 [2021-08-27 04:49:41,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 04:49:41,401 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2021-08-27 04:49:41,402 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:49:41,402 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2021-08-27 04:49:41,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-08-27 04:49:41,402 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 04:49:41,402 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 04:49:41,402 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-27 04:49:41,403 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting cbzeroErr1REQUIRES_VIOLATION === [cbzeroErr0REQUIRES_VIOLATION, cbzeroErr1REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-27 04:49:41,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 04:49:41,403 INFO L82 PathProgramCache]: Analyzing trace with hash 469198072, now seen corresponding path program 1 times [2021-08-27 04:49:41,403 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 04:49:41,403 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102418044] [2021-08-27 04:49:41,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:49:41,404 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 04:49:41,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:49:41,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 04:49:41,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:49:41,518 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 04:49:41,519 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 04:49:41,519 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102418044] [2021-08-27 04:49:41,519 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102418044] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 04:49:41,520 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 04:49:41,520 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-27 04:49:41,520 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98608422] [2021-08-27 04:49:41,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-27 04:49:41,521 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 04:49:41,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-27 04:49:41,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-08-27 04:49:41,523 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:49:41,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 04:49:41,647 INFO L93 Difference]: Finished difference Result 27 states and 30 transitions. [2021-08-27 04:49:41,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-27 04:49:41,650 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 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 04:49:41,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 04:49:41,652 INFO L225 Difference]: With dead ends: 27 [2021-08-27 04:49:41,652 INFO L226 Difference]: Without dead ends: 27 [2021-08-27 04:49:41,653 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 90.1ms TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-08-27 04:49:41,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-08-27 04:49:41,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 24. [2021-08-27 04:49:41,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 18 states have internal predecessors, (22), 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 04:49:41,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2021-08-27 04:49:41,659 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 14 [2021-08-27 04:49:41,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 04:49:41,659 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2021-08-27 04:49:41,659 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:49:41,659 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2021-08-27 04:49:41,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-08-27 04:49:41,660 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 04:49:41,661 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 04:49:41,661 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-27 04:49:41,661 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ENSURES_VIOLATIONMEMORY_LEAK === [cbzeroErr0REQUIRES_VIOLATION, cbzeroErr1REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-27 04:49:41,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 04:49:41,662 INFO L82 PathProgramCache]: Analyzing trace with hash 2054568730, now seen corresponding path program 1 times [2021-08-27 04:49:41,662 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 04:49:41,662 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323972234] [2021-08-27 04:49:41,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:49:41,662 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 04:49:41,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:49:41,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 04:49:41,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:49:41,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-08-27 04:49:41,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:49:41,791 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 04:49:41,791 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 04:49:41,792 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323972234] [2021-08-27 04:49:41,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323972234] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 04:49:41,793 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 04:49:41,793 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-27 04:49:41,795 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75034100] [2021-08-27 04:49:41,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-27 04:49:41,796 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 04:49:41,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-27 04:49:41,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-08-27 04:49:41,797 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 8 states, 8 states have (on average 1.5) internal successors, (12), 6 states have internal predecessors, (12), 2 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 04:49:41,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 04:49:41,957 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2021-08-27 04:49:41,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-27 04:49:41,957 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.5) internal successors, (12), 6 states have internal predecessors, (12), 2 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) Word has length 17 [2021-08-27 04:49:41,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 04:49:41,959 INFO L225 Difference]: With dead ends: 34 [2021-08-27 04:49:41,959 INFO L226 Difference]: Without dead ends: 34 [2021-08-27 04:49:41,960 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 98.8ms TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2021-08-27 04:49:41,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-08-27 04:49:41,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 28. [2021-08-27 04:49:41,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 19 states have (on average 1.263157894736842) internal successors, (24), 22 states have internal predecessors, (24), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2021-08-27 04:49:41,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2021-08-27 04:49:41,968 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 17 [2021-08-27 04:49:41,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 04:49:41,969 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2021-08-27 04:49:41,969 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.5) internal successors, (12), 6 states have internal predecessors, (12), 2 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 04:49:41,969 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2021-08-27 04:49:41,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-08-27 04:49:41,970 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 04:49:41,970 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 04:49:41,970 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-27 04:49:41,971 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ENSURES_VIOLATIONMEMORY_LEAK === [cbzeroErr0REQUIRES_VIOLATION, cbzeroErr1REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-27 04:49:41,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 04:49:41,971 INFO L82 PathProgramCache]: Analyzing trace with hash 1661541720, now seen corresponding path program 1 times [2021-08-27 04:49:41,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 04:49:41,972 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923347203] [2021-08-27 04:49:41,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:49:41,972 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 04:49:41,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:49:42,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 04:49:42,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:49:42,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-08-27 04:49:42,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:49:42,077 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 04:49:42,078 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 04:49:42,078 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923347203] [2021-08-27 04:49:42,078 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923347203] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 04:49:42,078 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 04:49:42,078 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-27 04:49:42,078 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903195315] [2021-08-27 04:49:42,079 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-27 04:49:42,079 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 04:49:42,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-27 04:49:42,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-08-27 04:49:42,079 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 9 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 7 states have internal predecessors, (12), 2 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 04:49:42,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 04:49:42,225 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2021-08-27 04:49:42,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-27 04:49:42,226 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 7 states have internal predecessors, (12), 2 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) Word has length 17 [2021-08-27 04:49:42,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 04:49:42,227 INFO L225 Difference]: With dead ends: 28 [2021-08-27 04:49:42,227 INFO L226 Difference]: Without dead ends: 26 [2021-08-27 04:49:42,227 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 114.0ms TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2021-08-27 04:49:42,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-08-27 04:49:42,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2021-08-27 04:49:42,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 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 04:49:42,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2021-08-27 04:49:42,235 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 17 [2021-08-27 04:49:42,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 04:49:42,236 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2021-08-27 04:49:42,236 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 7 states have internal predecessors, (12), 2 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 04:49:42,236 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2021-08-27 04:49:42,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-08-27 04:49:42,237 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 04:49:42,237 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 04:49:42,237 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-27 04:49:42,237 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting cbzeroErr1REQUIRES_VIOLATION === [cbzeroErr0REQUIRES_VIOLATION, cbzeroErr1REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-27 04:49:42,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 04:49:42,238 INFO L82 PathProgramCache]: Analyzing trace with hash -684268688, now seen corresponding path program 1 times [2021-08-27 04:49:42,238 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 04:49:42,238 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104939610] [2021-08-27 04:49:42,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:49:42,238 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 04:49:42,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:49:42,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 04:49:42,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:49:42,353 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 04:49:42,354 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 04:49:42,354 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104939610] [2021-08-27 04:49:42,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104939610] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 04:49:42,354 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [947284967] [2021-08-27 04:49:42,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:49:42,354 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 04:49:42,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 04:49:42,356 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 04:49:42,367 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-08-27 04:49:42,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:49:42,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 13 conjunts are in the unsatisfiable core [2021-08-27 04:49:42,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 04:49:42,698 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 04:49:42,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [947284967] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 04:49:42,698 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 04:49:42,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 9 [2021-08-27 04:49:42,698 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487917972] [2021-08-27 04:49:42,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-27 04:49:42,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 04:49:42,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-27 04:49:42,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-08-27 04:49:42,700 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 7 states have internal predecessors, (17), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:49:42,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 04:49:42,810 INFO L93 Difference]: Finished difference Result 38 states and 39 transitions. [2021-08-27 04:49:42,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-27 04:49:42,811 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 7 states have internal predecessors, (17), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2021-08-27 04:49:42,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 04:49:42,811 INFO L225 Difference]: With dead ends: 38 [2021-08-27 04:49:42,811 INFO L226 Difference]: Without dead ends: 38 [2021-08-27 04:49:42,812 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 93.8ms TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2021-08-27 04:49:42,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-08-27 04:49:42,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 35. [2021-08-27 04:49:42,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 26 states have (on average 1.1538461538461537) internal successors, (30), 28 states have internal predecessors, (30), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-27 04:49:42,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2021-08-27 04:49:42,818 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 18 [2021-08-27 04:49:42,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 04:49:42,819 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2021-08-27 04:49:42,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 7 states have internal predecessors, (17), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:49:42,820 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2021-08-27 04:49:42,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-08-27 04:49:42,820 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 04:49:42,820 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 04:49:42,842 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-08-27 04:49:43,038 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-08-27 04:49:43,038 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting cbzeroErr1REQUIRES_VIOLATION === [cbzeroErr0REQUIRES_VIOLATION, cbzeroErr1REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-27 04:49:43,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 04:49:43,038 INFO L82 PathProgramCache]: Analyzing trace with hash 16795890, now seen corresponding path program 1 times [2021-08-27 04:49:43,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 04:49:43,039 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564215150] [2021-08-27 04:49:43,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:49:43,039 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 04:49:43,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:49:43,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 04:49:43,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:49:43,258 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 04:49:43,258 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 04:49:43,258 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564215150] [2021-08-27 04:49:43,258 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564215150] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 04:49:43,258 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1778504433] [2021-08-27 04:49:43,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:49:43,259 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 04:49:43,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 04:49:43,261 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 04:49:43,288 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-08-27 04:49:43,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:49:43,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 40 conjunts are in the unsatisfiable core [2021-08-27 04:49:43,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 04:49:43,467 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2021-08-27 04:49:43,747 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 04:49:43,747 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1778504433] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 04:49:43,747 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 04:49:43,747 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2021-08-27 04:49:43,748 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072441629] [2021-08-27 04:49:43,748 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-08-27 04:49:43,748 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 04:49:43,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-08-27 04:49:43,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=333, Unknown=0, NotChecked=0, Total=380 [2021-08-27 04:49:43,749 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand has 20 states, 17 states have (on average 1.411764705882353) internal successors, (24), 17 states have internal predecessors, (24), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:49:44,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 04:49:44,044 INFO L93 Difference]: Finished difference Result 40 states and 43 transitions. [2021-08-27 04:49:44,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-27 04:49:44,045 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 1.411764705882353) internal successors, (24), 17 states have internal predecessors, (24), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2021-08-27 04:49:44,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 04:49:44,045 INFO L225 Difference]: With dead ends: 40 [2021-08-27 04:49:44,046 INFO L226 Difference]: Without dead ends: 40 [2021-08-27 04:49:44,047 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 368.7ms TimeCoverageRelationStatistics Valid=107, Invalid=649, Unknown=0, NotChecked=0, Total=756 [2021-08-27 04:49:44,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-08-27 04:49:44,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2021-08-27 04:49:44,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 30 states have (on average 1.1666666666666667) internal successors, (35), 32 states have internal predecessors, (35), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-27 04:49:44,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2021-08-27 04:49:44,050 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 18 [2021-08-27 04:49:44,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 04:49:44,050 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2021-08-27 04:49:44,050 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 1.411764705882353) internal successors, (24), 17 states have internal predecessors, (24), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:49:44,051 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2021-08-27 04:49:44,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-08-27 04:49:44,051 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 04:49:44,051 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 04:49:44,067 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-08-27 04:49:44,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-08-27 04:49:44,252 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ENSURES_VIOLATIONMEMORY_LEAK === [cbzeroErr0REQUIRES_VIOLATION, cbzeroErr1REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-27 04:49:44,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 04:49:44,252 INFO L82 PathProgramCache]: Analyzing trace with hash -1135310430, now seen corresponding path program 1 times [2021-08-27 04:49:44,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 04:49:44,252 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206147006] [2021-08-27 04:49:44,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:49:44,252 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 04:49:44,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:49:44,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 04:49:44,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:49:44,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-08-27 04:49:44,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:49:44,312 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-27 04:49:44,313 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 04:49:44,313 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206147006] [2021-08-27 04:49:44,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206147006] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 04:49:44,313 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 04:49:44,313 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-27 04:49:44,313 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198195431] [2021-08-27 04:49:44,314 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-27 04:49:44,314 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 04:49:44,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-27 04:49:44,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-08-27 04:49:44,314 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-08-27 04:49:44,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 04:49:44,361 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2021-08-27 04:49:44,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-27 04:49:44,362 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 21 [2021-08-27 04:49:44,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 04:49:44,363 INFO L225 Difference]: With dead ends: 38 [2021-08-27 04:49:44,363 INFO L226 Difference]: Without dead ends: 23 [2021-08-27 04:49:44,363 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 22.8ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-08-27 04:49:44,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-08-27 04:49:44,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-08-27 04:49:44,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:49:44,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2021-08-27 04:49:44,365 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 21 [2021-08-27 04:49:44,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 04:49:44,365 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2021-08-27 04:49:44,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-08-27 04:49:44,365 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2021-08-27 04:49:44,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-08-27 04:49:44,365 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 04:49:44,366 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 04:49:44,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-08-27 04:49:44,366 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting cbzeroErr1REQUIRES_VIOLATION === [cbzeroErr0REQUIRES_VIOLATION, cbzeroErr1REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-27 04:49:44,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 04:49:44,366 INFO L82 PathProgramCache]: Analyzing trace with hash -2066138518, now seen corresponding path program 2 times [2021-08-27 04:49:44,366 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 04:49:44,366 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296002029] [2021-08-27 04:49:44,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:49:44,367 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 04:49:44,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:49:44,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 04:49:44,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:49:44,634 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 04:49:44,634 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 04:49:44,636 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296002029] [2021-08-27 04:49:44,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296002029] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 04:49:44,637 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1900274091] [2021-08-27 04:49:44,637 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-27 04:49:44,637 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 04:49:44,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 04:49:44,638 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 04:49:44,643 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-08-27 04:49:44,776 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-27 04:49:44,777 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 04:49:44,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 53 conjunts are in the unsatisfiable core [2021-08-27 04:49:44,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 04:49:44,818 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2021-08-27 04:49:45,231 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 04:49:45,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1900274091] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 04:49:45,232 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 04:49:45,232 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12] total 24 [2021-08-27 04:49:45,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468876374] [2021-08-27 04:49:45,233 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-27 04:49:45,233 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 04:49:45,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-27 04:49:45,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2021-08-27 04:49:45,234 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand has 25 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 22 states have internal predecessors, (32), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:49:45,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 04:49:45,836 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2021-08-27 04:49:45,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-08-27 04:49:45,836 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 22 states have internal predecessors, (32), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2021-08-27 04:49:45,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 04:49:45,837 INFO L225 Difference]: With dead ends: 27 [2021-08-27 04:49:45,837 INFO L226 Difference]: Without dead ends: 0 [2021-08-27 04:49:45,837 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 288 ImplicationChecksByTransitivity, 748.8ms TimeCoverageRelationStatistics Valid=187, Invalid=1295, Unknown=0, NotChecked=0, Total=1482 [2021-08-27 04:49:45,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-27 04:49:45,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-27 04:49:45,837 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 04:49:45,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-27 04:49:45,837 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2021-08-27 04:49:45,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 04:49:45,837 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-27 04:49:45,838 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 22 states have internal predecessors, (32), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:49:45,838 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-27 04:49:45,838 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-27 04:49:45,839 INFO L764 garLoopResultBuilder]: Registering result SAFE for location cbzeroErr0REQUIRES_VIOLATION [2021-08-27 04:49:45,840 INFO L764 garLoopResultBuilder]: Registering result SAFE for location cbzeroErr1REQUIRES_VIOLATION [2021-08-27 04:49:45,840 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr0ENSURES_VIOLATIONMEMORY_LEAK [2021-08-27 04:49:45,856 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-08-27 04:49:46,040 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 04:49:46,043 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-27 04:49:46,044 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 04:49:46 BoogieIcfgContainer [2021-08-27 04:49:46,044 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-27 04:49:46,045 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 04:49:46,045 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 04:49:46,045 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 04:49:46,045 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:49:40" (3/4) ... [2021-08-27 04:49:46,047 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-27 04:49:46,051 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2021-08-27 04:49:46,051 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_32 [2021-08-27 04:49:46,051 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_64 [2021-08-27 04:49:46,051 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint16_identity [2021-08-27 04:49:46,052 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint64_identity [2021-08-27 04:49:46,052 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure cbzero [2021-08-27 04:49:46,052 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2021-08-27 04:49:46,052 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint32_identity [2021-08-27 04:49:46,054 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2021-08-27 04:49:46,054 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-08-27 04:49:46,054 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-27 04:49:46,054 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-27 04:49:46,071 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-27 04:49:46,071 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 04:49:46,072 INFO L168 Benchmark]: Toolchain (without parser) took 6096.25 ms. Allocated memory was 54.5 MB in the beginning and 146.8 MB in the end (delta: 92.3 MB). Free memory was 30.6 MB in the beginning and 58.5 MB in the end (delta: -27.8 MB). Peak memory consumption was 63.9 MB. Max. memory is 16.1 GB. [2021-08-27 04:49:46,073 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 54.5 MB. Free memory was 36.8 MB in the beginning and 36.8 MB in the end (delta: 36.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 04:49:46,073 INFO L168 Benchmark]: CACSL2BoogieTranslator took 362.15 ms. Allocated memory was 54.5 MB in the beginning and 69.2 MB in the end (delta: 14.7 MB). Free memory was 30.4 MB in the beginning and 47.1 MB in the end (delta: -16.7 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. [2021-08-27 04:49:46,073 INFO L168 Benchmark]: Boogie Preprocessor took 50.36 ms. Allocated memory is still 69.2 MB. Free memory was 47.1 MB in the beginning and 44.8 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 04:49:46,073 INFO L168 Benchmark]: RCFGBuilder took 383.85 ms. Allocated memory is still 69.2 MB. Free memory was 44.8 MB in the beginning and 41.2 MB in the end (delta: 3.6 MB). Peak memory consumption was 18.1 MB. Max. memory is 16.1 GB. [2021-08-27 04:49:46,074 INFO L168 Benchmark]: TraceAbstraction took 5267.50 ms. Allocated memory was 69.2 MB in the beginning and 146.8 MB in the end (delta: 77.6 MB). Free memory was 40.6 MB in the beginning and 61.1 MB in the end (delta: -20.5 MB). Peak memory consumption was 56.7 MB. Max. memory is 16.1 GB. [2021-08-27 04:49:46,074 INFO L168 Benchmark]: Witness Printer took 26.78 ms. Allocated memory is still 146.8 MB. Free memory was 61.1 MB in the beginning and 58.5 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 04:49:46,075 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 54.5 MB. Free memory was 36.8 MB in the beginning and 36.8 MB in the end (delta: 36.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 362.15 ms. Allocated memory was 54.5 MB in the beginning and 69.2 MB in the end (delta: 14.7 MB). Free memory was 30.4 MB in the beginning and 47.1 MB in the end (delta: -16.7 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 50.36 ms. Allocated memory is still 69.2 MB. Free memory was 47.1 MB in the beginning and 44.8 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 383.85 ms. Allocated memory is still 69.2 MB. Free memory was 44.8 MB in the beginning and 41.2 MB in the end (delta: 3.6 MB). Peak memory consumption was 18.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5267.50 ms. Allocated memory was 69.2 MB in the beginning and 146.8 MB in the end (delta: 77.6 MB). Free memory was 40.6 MB in the beginning and 61.1 MB in the end (delta: -20.5 MB). Peak memory consumption was 56.7 MB. Max. memory is 16.1 GB. * Witness Printer took 26.78 ms. Allocated memory is still 146.8 MB. Free memory was 61.1 MB in the beginning and 58.5 MB in the end (delta: 2.7 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 - PositiveResult [Line: 517]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 517]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 519]: 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, 40 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 5230.0ms, OverallIterations: 9, TraceHistogramMax: 3, EmptinessCheckTime: 11.9ms, AutomataDifference: 1720.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 6.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 150 SDtfs, 274 SDslu, 323 SDs, 0 SdLazy, 1055 SolverSat, 122 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 530.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 195 GetRequests, 62 SyntacticMatches, 1 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 461 ImplicationChecksByTransitivity, 1633.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=7, InterpolantAutomatonStates: 90, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 48.0ms AutomataMinimizationTime, 9 MinimizatonAttempts, 16 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 39.0ms SsaConstructionTime, 162.0ms SatisfiabilityAnalysisTime, 2106.9ms InterpolantComputationTime, 209 NumberOfCodeBlocks, 209 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 197 ConstructedInterpolants, 0 QuantifiedInterpolants, 1236 SizeOfPredicates, 26 NumberOfNonLiveVariables, 327 ConjunctsInSsa, 106 ConjunctsInUnsatCore, 12 InterpolantComputations, 6 PerfectInterpolantSequences, 6/34 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 3 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-08-27 04:49:46,103 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...