./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/array-memsafety/openbsd_cmemset-alloca-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 20ed64ec Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/array-memsafety/openbsd_cmemset-alloca-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 10bdb405bd6bca2bddb8b686c44dad291e109402 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 04:54:30,717 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 04:54:30,720 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 04:54:30,759 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 04:54:30,760 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 04:54:30,764 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 04:54:30,766 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 04:54:30,772 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 04:54:30,775 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 04:54:30,780 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 04:54:30,781 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 04:54:30,786 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 04:54:30,786 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 04:54:30,788 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 04:54:30,789 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 04:54:30,790 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 04:54:30,791 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 04:54:30,792 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 04:54:30,793 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 04:54:30,795 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 04:54:30,796 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 04:54:30,801 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 04:54:30,802 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 04:54:30,803 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 04:54:30,805 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 04:54:30,809 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 04:54:30,809 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 04:54:30,810 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 04:54:30,811 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 04:54:30,812 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 04:54:30,812 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 04:54:30,813 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 04:54:30,814 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 04:54:30,815 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 04:54:30,816 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 04:54:30,816 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 04:54:30,817 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 04:54:30,817 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 04:54:30,818 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 04:54:30,819 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 04:54:30,820 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 04:54:30,820 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-08-27 04:54:30,855 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 04:54:30,856 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 04:54:30,857 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 04:54:30,857 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 04:54:30,858 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 04:54:30,859 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 04:54:30,859 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 04:54:30,859 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 04:54:30,859 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 04:54:30,859 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 04:54:30,860 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 04:54:30,860 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 04:54:30,861 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 04:54:30,861 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-08-27 04:54:30,861 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-08-27 04:54:30,861 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-08-27 04:54:30,861 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-27 04:54:30,861 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-08-27 04:54:30,862 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 04:54:30,870 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 04:54:30,871 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 04:54:30,871 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 04:54:30,871 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-27 04:54:30,871 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 04:54:30,872 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 04:54:30,872 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-27 04:54:30,872 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 04:54:30,872 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-27 04:54:30,872 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 04:54:30,873 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 10bdb405bd6bca2bddb8b686c44dad291e109402 [2021-08-27 04:54:31,170 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 04:54:31,186 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 04:54:31,189 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 04:54:31,189 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 04:54:31,190 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 04:54:31,191 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/openbsd_cmemset-alloca-1.i [2021-08-27 04:54:31,241 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/766eda559/d5816efb6630427eb931b671d86f02d1/FLAG0a5f253f1 [2021-08-27 04:54:31,744 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 04:54:31,747 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-memsafety/openbsd_cmemset-alloca-1.i [2021-08-27 04:54:31,760 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/766eda559/d5816efb6630427eb931b671d86f02d1/FLAG0a5f253f1 [2021-08-27 04:54:32,242 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/766eda559/d5816efb6630427eb931b671d86f02d1 [2021-08-27 04:54:32,244 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 04:54:32,246 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-27 04:54:32,250 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 04:54:32,251 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 04:54:32,253 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 04:54:32,254 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:54:32" (1/1) ... [2021-08-27 04:54:32,255 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11a62164 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:54:32, skipping insertion in model container [2021-08-27 04:54:32,255 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:54:32" (1/1) ... [2021-08-27 04:54:32,261 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 04:54:32,289 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 04:54:32,569 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 04:54:32,582 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 04:54:32,633 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 04:54:32,656 INFO L208 MainTranslator]: Completed translation [2021-08-27 04:54:32,658 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:54:32 WrapperNode [2021-08-27 04:54:32,658 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 04:54:32,659 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 04:54:32,659 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 04:54:32,659 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 04:54:32,667 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:54:32" (1/1) ... [2021-08-27 04:54:32,669 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:54:32" (1/1) ... [2021-08-27 04:54:32,689 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:54:32" (1/1) ... [2021-08-27 04:54:32,690 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:54:32" (1/1) ... [2021-08-27 04:54:32,710 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:54:32" (1/1) ... [2021-08-27 04:54:32,714 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:54:32" (1/1) ... [2021-08-27 04:54:32,720 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:54:32" (1/1) ... [2021-08-27 04:54:32,727 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 04:54:32,731 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 04:54:32,731 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 04:54:32,731 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 04:54:32,732 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:54:32" (1/1) ... [2021-08-27 04:54:32,738 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 04:54:32,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 04:54:32,758 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 04:54:32,783 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 04:54:32,804 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-08-27 04:54:32,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 04:54:32,805 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-08-27 04:54:32,805 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-08-27 04:54:32,805 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-08-27 04:54:32,806 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-08-27 04:54:32,806 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-08-27 04:54:32,806 INFO L138 BoogieDeclarations]: Found implementation of procedure cmemset [2021-08-27 04:54:32,807 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-08-27 04:54:32,807 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-08-27 04:54:32,807 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-08-27 04:54:32,808 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-08-27 04:54:32,808 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-08-27 04:54:32,808 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-08-27 04:54:32,808 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-08-27 04:54:32,808 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-08-27 04:54:32,808 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-08-27 04:54:32,809 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-08-27 04:54:32,809 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-08-27 04:54:32,809 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-08-27 04:54:32,809 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-08-27 04:54:32,809 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-08-27 04:54:32,809 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-08-27 04:54:32,810 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-08-27 04:54:32,810 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-08-27 04:54:32,810 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-08-27 04:54:32,810 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-08-27 04:54:32,810 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-08-27 04:54:32,810 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-08-27 04:54:32,811 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-08-27 04:54:32,811 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-08-27 04:54:32,811 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-08-27 04:54:32,811 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-08-27 04:54:32,812 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-08-27 04:54:32,812 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-08-27 04:54:32,812 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-08-27 04:54:32,812 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-08-27 04:54:32,812 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-08-27 04:54:32,812 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-08-27 04:54:32,813 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-08-27 04:54:32,813 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-08-27 04:54:32,813 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-08-27 04:54:32,813 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-08-27 04:54:32,813 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-08-27 04:54:32,813 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-08-27 04:54:32,813 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-08-27 04:54:32,814 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-08-27 04:54:32,814 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-08-27 04:54:32,814 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-08-27 04:54:32,815 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-08-27 04:54:32,815 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-08-27 04:54:32,815 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-08-27 04:54:32,815 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-08-27 04:54:32,816 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-08-27 04:54:32,816 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-08-27 04:54:32,816 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-08-27 04:54:32,816 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-08-27 04:54:32,816 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-08-27 04:54:32,817 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-08-27 04:54:32,817 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-08-27 04:54:32,817 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-08-27 04:54:32,817 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-08-27 04:54:32,817 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-08-27 04:54:32,817 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-08-27 04:54:32,817 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-08-27 04:54:32,818 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-08-27 04:54:32,818 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-08-27 04:54:32,818 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-08-27 04:54:32,819 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-08-27 04:54:32,819 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-08-27 04:54:32,820 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-08-27 04:54:32,820 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-08-27 04:54:32,820 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-08-27 04:54:32,820 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-08-27 04:54:32,820 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-08-27 04:54:32,820 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-08-27 04:54:32,820 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-08-27 04:54:32,821 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-08-27 04:54:32,821 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-08-27 04:54:32,821 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-08-27 04:54:32,822 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-08-27 04:54:32,822 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-08-27 04:54:32,822 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-08-27 04:54:32,822 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-08-27 04:54:32,822 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-08-27 04:54:32,822 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-08-27 04:54:32,822 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-08-27 04:54:32,823 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-08-27 04:54:32,823 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-08-27 04:54:32,823 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-08-27 04:54:32,823 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-08-27 04:54:32,823 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-08-27 04:54:32,823 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-08-27 04:54:32,823 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-08-27 04:54:32,824 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-08-27 04:54:32,824 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-08-27 04:54:32,824 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-08-27 04:54:32,824 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-08-27 04:54:32,824 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-08-27 04:54:32,824 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-08-27 04:54:32,824 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-08-27 04:54:32,825 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-08-27 04:54:32,825 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-08-27 04:54:32,825 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-08-27 04:54:32,825 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-08-27 04:54:32,825 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-08-27 04:54:32,826 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-08-27 04:54:32,826 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-08-27 04:54:32,826 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-08-27 04:54:32,826 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-08-27 04:54:32,826 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-08-27 04:54:32,827 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-08-27 04:54:32,827 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-08-27 04:54:32,827 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-08-27 04:54:32,827 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-08-27 04:54:32,828 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-08-27 04:54:32,828 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-08-27 04:54:32,828 INFO L130 BoogieDeclarations]: Found specification of procedure cmemset [2021-08-27 04:54:32,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-27 04:54:32,828 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-08-27 04:54:32,828 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 04:54:32,828 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-27 04:54:32,829 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-08-27 04:54:32,829 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 04:54:32,829 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-08-27 04:54:33,360 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 04:54:33,361 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-08-27 04:54:33,363 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:54:33 BoogieIcfgContainer [2021-08-27 04:54:33,364 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 04:54:33,366 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-27 04:54:33,368 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-27 04:54:33,370 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-27 04:54:33,371 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 04:54:32" (1/3) ... [2021-08-27 04:54:33,372 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34cfd155 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 04:54:33, skipping insertion in model container [2021-08-27 04:54:33,372 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:54:32" (2/3) ... [2021-08-27 04:54:33,373 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34cfd155 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 04:54:33, skipping insertion in model container [2021-08-27 04:54:33,374 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:54:33" (3/3) ... [2021-08-27 04:54:33,375 INFO L111 eAbstractionObserver]: Analyzing ICFG openbsd_cmemset-alloca-1.i [2021-08-27 04:54:33,380 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-27 04:54:33,385 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-08-27 04:54:33,428 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-27 04:54:33,434 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 04:54:33,434 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-08-27 04:54:33,445 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 21 states have internal predecessors, (26), 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 04:54:33,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-08-27 04:54:33,451 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 04:54:33,451 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 04:54:33,451 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting cmemsetErr1REQUIRES_VIOLATION === [cmemsetErr0REQUIRES_VIOLATION, cmemsetErr1REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-27 04:54:33,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 04:54:33,456 INFO L82 PathProgramCache]: Analyzing trace with hash -1505405860, now seen corresponding path program 1 times [2021-08-27 04:54:33,463 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 04:54:33,463 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292467035] [2021-08-27 04:54:33,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:54:33,464 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 04:54:33,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:54:33,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 04:54:33,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:54:33,884 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 04:54:33,885 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 04:54:33,885 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292467035] [2021-08-27 04:54:33,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292467035] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 04:54:33,886 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 04:54:33,886 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-27 04:54:33,895 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027413341] [2021-08-27 04:54:33,900 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-27 04:54:33,900 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 04:54:33,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-27 04:54:33,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-08-27 04:54:33,913 INFO L87 Difference]: Start difference. First operand has 28 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 21 states have internal predecessors, (26), 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 9 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 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 04:54:34,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 04:54:34,372 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2021-08-27 04:54:34,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-27 04:54:34,374 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 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 04:54:34,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 04:54:34,381 INFO L225 Difference]: With dead ends: 32 [2021-08-27 04:54:34,381 INFO L226 Difference]: Without dead ends: 29 [2021-08-27 04:54:34,384 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 341.1ms TimeCoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2021-08-27 04:54:34,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-08-27 04:54:34,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2021-08-27 04:54:34,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 19 states have (on average 1.368421052631579) internal successors, (26), 21 states have internal predecessors, (26), 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 04:54:34,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2021-08-27 04:54:34,408 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 14 [2021-08-27 04:54:34,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 04:54:34,409 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2021-08-27 04:54:34,409 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 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 04:54:34,409 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2021-08-27 04:54:34,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-08-27 04:54:34,410 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 04:54:34,410 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 04:54:34,410 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-27 04:54:34,411 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting cmemsetErr0REQUIRES_VIOLATION === [cmemsetErr0REQUIRES_VIOLATION, cmemsetErr1REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-27 04:54:34,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 04:54:34,411 INFO L82 PathProgramCache]: Analyzing trace with hash -1505405861, now seen corresponding path program 1 times [2021-08-27 04:54:34,411 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 04:54:34,412 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818830081] [2021-08-27 04:54:34,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:54:34,412 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 04:54:34,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:54:34,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 04:54:34,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:54:34,568 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 04:54:34,569 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 04:54:34,569 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818830081] [2021-08-27 04:54:34,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818830081] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 04:54:34,569 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 04:54:34,570 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-27 04:54:34,570 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296889031] [2021-08-27 04:54:34,571 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-27 04:54:34,571 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 04:54:34,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-27 04:54:34,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-08-27 04:54:34,572 INFO L87 Difference]: Start difference. First operand 27 states and 31 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 04:54:34,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 04:54:34,776 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2021-08-27 04:54:34,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-27 04:54:34,777 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 04:54:34,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 04:54:34,781 INFO L225 Difference]: With dead ends: 29 [2021-08-27 04:54:34,781 INFO L226 Difference]: Without dead ends: 29 [2021-08-27 04:54:34,781 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 139.5ms TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-08-27 04:54:34,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-08-27 04:54:34,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 26. [2021-08-27 04:54:34,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 19 states have (on average 1.263157894736842) internal successors, (24), 20 states have internal predecessors, (24), 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 04:54:34,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2021-08-27 04:54:34,788 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 14 [2021-08-27 04:54:34,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 04:54:34,788 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2021-08-27 04:54:34,788 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 04:54:34,788 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2021-08-27 04:54:34,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-08-27 04:54:34,789 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 04:54:34,789 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 04:54:34,790 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-27 04:54:34,790 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ENSURES_VIOLATIONMEMORY_LEAK === [cmemsetErr0REQUIRES_VIOLATION, cmemsetErr1REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-27 04:54:34,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 04:54:34,790 INFO L82 PathProgramCache]: Analyzing trace with hash 1092272849, now seen corresponding path program 1 times [2021-08-27 04:54:34,791 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 04:54:34,791 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105868973] [2021-08-27 04:54:34,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:54:34,791 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 04:54:34,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:54:34,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 04:54:34,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:54:34,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-08-27 04:54:34,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:54:34,984 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 04:54:34,985 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 04:54:34,985 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105868973] [2021-08-27 04:54:34,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105868973] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 04:54:34,986 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 04:54:34,987 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-27 04:54:34,987 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157878489] [2021-08-27 04:54:34,988 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-27 04:54:34,988 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 04:54:34,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-27 04:54:34,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-27 04:54:34,990 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 5 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 04:54:35,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 04:54:35,234 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2021-08-27 04:54:35,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-27 04:54:35,235 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 5 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 04:54:35,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 04:54:35,239 INFO L225 Difference]: With dead ends: 39 [2021-08-27 04:54:35,239 INFO L226 Difference]: Without dead ends: 39 [2021-08-27 04:54:35,240 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 147.4ms TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2021-08-27 04:54:35,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-08-27 04:54:35,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 31. [2021-08-27 04:54:35,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 25 states have internal predecessors, (27), 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 04:54:35,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2021-08-27 04:54:35,249 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 17 [2021-08-27 04:54:35,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 04:54:35,249 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2021-08-27 04:54:35,249 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 5 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 04:54:35,250 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2021-08-27 04:54:35,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-08-27 04:54:35,250 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 04:54:35,250 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 04:54:35,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-27 04:54:35,251 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ENSURES_VIOLATIONMEMORY_LEAK === [cmemsetErr0REQUIRES_VIOLATION, cmemsetErr1REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-27 04:54:35,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 04:54:35,252 INFO L82 PathProgramCache]: Analyzing trace with hash 699245839, now seen corresponding path program 1 times [2021-08-27 04:54:35,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 04:54:35,252 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737117581] [2021-08-27 04:54:35,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:54:35,252 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 04:54:35,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:54:35,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 04:54:35,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:54:35,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-08-27 04:54:35,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:54:35,418 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 04:54:35,418 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 04:54:35,419 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737117581] [2021-08-27 04:54:35,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737117581] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 04:54:35,419 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 04:54:35,420 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-27 04:54:35,422 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136332273] [2021-08-27 04:54:35,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-27 04:54:35,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 04:54:35,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-27 04:54:35,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-08-27 04:54:35,424 INFO L87 Difference]: Start difference. First operand 31 states and 35 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 04:54:35,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 04:54:35,670 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2021-08-27 04:54:35,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-27 04:54:35,671 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 04:54:35,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 04:54:35,671 INFO L225 Difference]: With dead ends: 33 [2021-08-27 04:54:35,672 INFO L226 Difference]: Without dead ends: 30 [2021-08-27 04:54:35,672 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 190.5ms TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2021-08-27 04:54:35,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-08-27 04:54:35,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 26. [2021-08-27 04:54:35,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 20 states have internal predecessors, (23), 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 04:54:35,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2021-08-27 04:54:35,675 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 17 [2021-08-27 04:54:35,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 04:54:35,675 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2021-08-27 04:54:35,676 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 04:54:35,676 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2021-08-27 04:54:35,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-08-27 04:54:35,676 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 04:54:35,677 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 04:54:35,677 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-27 04:54:35,677 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting cmemsetErr1REQUIRES_VIOLATION === [cmemsetErr0REQUIRES_VIOLATION, cmemsetErr1REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-27 04:54:35,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 04:54:35,678 INFO L82 PathProgramCache]: Analyzing trace with hash 1853612607, now seen corresponding path program 1 times [2021-08-27 04:54:35,678 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 04:54:35,678 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346951246] [2021-08-27 04:54:35,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:54:35,678 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 04:54:35,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:54:35,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 04:54:35,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:54:35,830 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 04:54:35,831 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 04:54:35,831 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346951246] [2021-08-27 04:54:35,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346951246] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 04:54:35,831 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 04:54:35,831 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-27 04:54:35,831 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349661742] [2021-08-27 04:54:35,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-27 04:54:35,832 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 04:54:35,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-27 04:54:35,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-27 04:54:35,833 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 5 states have internal predecessors, (15), 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 04:54:36,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 04:54:36,033 INFO L93 Difference]: Finished difference Result 41 states and 42 transitions. [2021-08-27 04:54:36,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-27 04:54:36,034 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 5 states have internal predecessors, (15), 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 19 [2021-08-27 04:54:36,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 04:54:36,035 INFO L225 Difference]: With dead ends: 41 [2021-08-27 04:54:36,035 INFO L226 Difference]: Without dead ends: 41 [2021-08-27 04:54:36,035 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 150.8ms TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-08-27 04:54:36,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-08-27 04:54:36,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 38. [2021-08-27 04:54:36,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 29 states have (on average 1.1379310344827587) internal successors, (33), 31 states have internal predecessors, (33), 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 04:54:36,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 40 transitions. [2021-08-27 04:54:36,039 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 40 transitions. Word has length 19 [2021-08-27 04:54:36,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 04:54:36,039 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 40 transitions. [2021-08-27 04:54:36,039 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 5 states have internal predecessors, (15), 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 04:54:36,039 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 40 transitions. [2021-08-27 04:54:36,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-08-27 04:54:36,040 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 04:54:36,040 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 04:54:36,040 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-27 04:54:36,041 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting cmemsetErr1REQUIRES_VIOLATION === [cmemsetErr0REQUIRES_VIOLATION, cmemsetErr1REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-27 04:54:36,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 04:54:36,041 INFO L82 PathProgramCache]: Analyzing trace with hash 2111778045, now seen corresponding path program 1 times [2021-08-27 04:54:36,041 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 04:54:36,041 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221066436] [2021-08-27 04:54:36,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:54:36,042 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 04:54:36,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:54:36,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 04:54:36,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:54:36,384 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 04:54:36,384 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 04:54:36,385 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221066436] [2021-08-27 04:54:36,385 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221066436] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 04:54:36,385 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [547346483] [2021-08-27 04:54:36,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:54:36,385 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 04:54:36,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 04:54:36,389 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 04:54:36,415 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 04:54:36,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:54:36,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 35 conjunts are in the unsatisfiable core [2021-08-27 04:54:36,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 04:54:36,762 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 6 treesize of output 5 [2021-08-27 04:54:37,310 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 04:54:37,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [547346483] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 04:54:37,311 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 04:54:37,311 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 21 [2021-08-27 04:54:37,311 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41408785] [2021-08-27 04:54:37,312 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-08-27 04:54:37,312 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 04:54:37,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-08-27 04:54:37,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=413, Unknown=0, NotChecked=0, Total=462 [2021-08-27 04:54:37,313 INFO L87 Difference]: Start difference. First operand 38 states and 40 transitions. Second operand has 22 states, 19 states have (on average 1.368421052631579) internal successors, (26), 19 states have internal predecessors, (26), 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 04:54:38,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 04:54:38,178 INFO L93 Difference]: Finished difference Result 44 states and 47 transitions. [2021-08-27 04:54:38,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-27 04:54:38,179 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 19 states have (on average 1.368421052631579) internal successors, (26), 19 states have internal predecessors, (26), 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 19 [2021-08-27 04:54:38,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 04:54:38,183 INFO L225 Difference]: With dead ends: 44 [2021-08-27 04:54:38,183 INFO L226 Difference]: Without dead ends: 44 [2021-08-27 04:54:38,185 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 1089.8ms TimeCoverageRelationStatistics Valid=126, Invalid=804, Unknown=0, NotChecked=0, Total=930 [2021-08-27 04:54:38,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-08-27 04:54:38,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2021-08-27 04:54:38,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 34 states have (on average 1.1470588235294117) internal successors, (39), 36 states have internal predecessors, (39), 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 04:54:38,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 46 transitions. [2021-08-27 04:54:38,189 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 46 transitions. Word has length 19 [2021-08-27 04:54:38,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 04:54:38,189 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 46 transitions. [2021-08-27 04:54:38,189 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 19 states have (on average 1.368421052631579) internal successors, (26), 19 states have internal predecessors, (26), 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 04:54:38,189 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 46 transitions. [2021-08-27 04:54:38,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-08-27 04:54:38,190 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 04:54:38,190 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 04:54:38,208 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 04:54:38,390 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 04:54:38,391 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ENSURES_VIOLATIONMEMORY_LEAK === [cmemsetErr0REQUIRES_VIOLATION, cmemsetErr1REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-27 04:54:38,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 04:54:38,391 INFO L82 PathProgramCache]: Analyzing trace with hash 538552420, now seen corresponding path program 1 times [2021-08-27 04:54:38,391 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 04:54:38,391 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793033487] [2021-08-27 04:54:38,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:54:38,392 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 04:54:38,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:54:38,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 04:54:38,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:54:38,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-08-27 04:54:38,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:54:38,478 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 04:54:38,478 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 04:54:38,478 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793033487] [2021-08-27 04:54:38,478 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793033487] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 04:54:38,479 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 04:54:38,479 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-27 04:54:38,479 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028035732] [2021-08-27 04:54:38,479 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-27 04:54:38,480 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 04:54:38,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-27 04:54:38,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-08-27 04:54:38,481 INFO L87 Difference]: Start difference. First operand 43 states and 46 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 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 04:54:38,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 04:54:38,566 INFO L93 Difference]: Finished difference Result 42 states and 45 transitions. [2021-08-27 04:54:38,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-27 04:54:38,567 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 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 22 [2021-08-27 04:54:38,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 04:54:38,568 INFO L225 Difference]: With dead ends: 42 [2021-08-27 04:54:38,568 INFO L226 Difference]: Without dead ends: 25 [2021-08-27 04:54:38,568 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 40.8ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-08-27 04:54:38,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-08-27 04:54:38,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-08-27 04:54:38,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 20 states have (on average 1.1) internal successors, (22), 20 states have internal predecessors, (22), 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 04:54:38,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2021-08-27 04:54:38,577 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 22 [2021-08-27 04:54:38,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 04:54:38,577 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2021-08-27 04:54:38,577 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 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 04:54:38,578 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2021-08-27 04:54:38,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-08-27 04:54:38,578 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 04:54:38,579 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 04:54:38,579 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-27 04:54:38,579 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting cmemsetErr1REQUIRES_VIOLATION === [cmemsetErr0REQUIRES_VIOLATION, cmemsetErr1REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-27 04:54:38,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 04:54:38,579 INFO L82 PathProgramCache]: Analyzing trace with hash 402998846, now seen corresponding path program 2 times [2021-08-27 04:54:38,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 04:54:38,580 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825865684] [2021-08-27 04:54:38,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:54:38,580 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 04:54:38,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:54:39,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 04:54:39,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:54:39,100 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 04:54:39,100 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 04:54:39,100 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825865684] [2021-08-27 04:54:39,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825865684] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 04:54:39,101 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [876945392] [2021-08-27 04:54:39,101 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-27 04:54:39,101 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 04:54:39,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 04:54:39,102 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 04:54:39,103 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 04:54:39,309 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-27 04:54:39,309 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 04:54:39,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 51 conjunts are in the unsatisfiable core [2021-08-27 04:54:39,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 04:54:39,355 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 6 treesize of output 5 [2021-08-27 04:54:40,013 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 04:54:40,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [876945392] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 04:54:40,013 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 04:54:40,014 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13] total 28 [2021-08-27 04:54:40,014 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499545948] [2021-08-27 04:54:40,014 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-08-27 04:54:40,014 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 04:54:40,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-08-27 04:54:40,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=747, Unknown=0, NotChecked=0, Total=812 [2021-08-27 04:54:40,016 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand has 29 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 26 states have internal predecessors, (37), 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 04:54:41,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 04:54:41,464 INFO L93 Difference]: Finished difference Result 36 states and 37 transitions. [2021-08-27 04:54:41,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-08-27 04:54:41,465 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 26 states have internal predecessors, (37), 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 24 [2021-08-27 04:54:41,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 04:54:41,466 INFO L225 Difference]: With dead ends: 36 [2021-08-27 04:54:41,466 INFO L226 Difference]: Without dead ends: 36 [2021-08-27 04:54:41,467 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 1776.9ms TimeCoverageRelationStatistics Valid=221, Invalid=1849, Unknown=0, NotChecked=0, Total=2070 [2021-08-27 04:54:41,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-08-27 04:54:41,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2021-08-27 04:54:41,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 30 states have (on average 1.0666666666666667) internal successors, (32), 30 states have internal predecessors, (32), 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 04:54:41,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2021-08-27 04:54:41,472 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 24 [2021-08-27 04:54:41,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 04:54:41,474 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2021-08-27 04:54:41,474 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 26 states have internal predecessors, (37), 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 04:54:41,474 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2021-08-27 04:54:41,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-08-27 04:54:41,477 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 04:54:41,478 INFO L512 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 04:54:41,497 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-08-27 04:54:41,682 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,SelfDestructingSolverStorable7 [2021-08-27 04:54:41,683 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting cmemsetErr1REQUIRES_VIOLATION === [cmemsetErr0REQUIRES_VIOLATION, cmemsetErr1REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-27 04:54:41,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 04:54:41,683 INFO L82 PathProgramCache]: Analyzing trace with hash -1008858722, now seen corresponding path program 3 times [2021-08-27 04:54:41,684 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 04:54:41,684 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674531991] [2021-08-27 04:54:41,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:54:41,684 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 04:54:41,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:54:42,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 04:54:42,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:54:42,529 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 11 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 04:54:42,529 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 04:54:42,529 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674531991] [2021-08-27 04:54:42,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674531991] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 04:54:42,530 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [386848215] [2021-08-27 04:54:42,530 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-27 04:54:42,530 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 04:54:42,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 04:54:42,537 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 04:54:42,538 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 04:54:42,821 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-08-27 04:54:42,821 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 04:54:42,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 71 conjunts are in the unsatisfiable core [2021-08-27 04:54:42,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 04:54:42,877 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 6 treesize of output 5 [2021-08-27 04:54:43,814 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 04:54:43,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [386848215] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 04:54:43,814 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 04:54:43,815 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 16] total 37 [2021-08-27 04:54:43,815 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396542194] [2021-08-27 04:54:43,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2021-08-27 04:54:43,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 04:54:43,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-08-27 04:54:43,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=1312, Unknown=0, NotChecked=0, Total=1406 [2021-08-27 04:54:43,817 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand has 38 states, 35 states have (on average 1.6285714285714286) internal successors, (57), 35 states have internal predecessors, (57), 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 04:54:46,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 04:54:46,181 INFO L93 Difference]: Finished difference Result 40 states and 41 transitions. [2021-08-27 04:54:46,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-08-27 04:54:46,182 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 35 states have (on average 1.6285714285714286) internal successors, (57), 35 states have internal predecessors, (57), 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 34 [2021-08-27 04:54:46,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 04:54:46,183 INFO L225 Difference]: With dead ends: 40 [2021-08-27 04:54:46,183 INFO L226 Difference]: Without dead ends: 0 [2021-08-27 04:54:46,184 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 686 ImplicationChecksByTransitivity, 2850.0ms TimeCoverageRelationStatistics Valid=362, Invalid=3544, Unknown=0, NotChecked=0, Total=3906 [2021-08-27 04:54:46,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-27 04:54:46,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-27 04:54:46,185 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 04:54:46,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-27 04:54:46,185 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 34 [2021-08-27 04:54:46,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 04:54:46,185 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-27 04:54:46,185 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 35 states have (on average 1.6285714285714286) internal successors, (57), 35 states have internal predecessors, (57), 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 04:54:46,186 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-27 04:54:46,186 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-27 04:54:46,188 INFO L764 garLoopResultBuilder]: Registering result SAFE for location cmemsetErr0REQUIRES_VIOLATION [2021-08-27 04:54:46,188 INFO L764 garLoopResultBuilder]: Registering result SAFE for location cmemsetErr1REQUIRES_VIOLATION [2021-08-27 04:54:46,188 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr0ENSURES_VIOLATIONMEMORY_LEAK [2021-08-27 04:54:46,220 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 04:54:46,408 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 04:54:46,412 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-27 04:54:46,413 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 04:54:46 BoogieIcfgContainer [2021-08-27 04:54:46,413 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-27 04:54:46,414 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 04:54:46,414 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 04:54:46,414 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 04:54:46,414 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:54:33" (3/4) ... [2021-08-27 04:54:46,416 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-27 04:54:46,420 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2021-08-27 04:54:46,420 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_32 [2021-08-27 04:54:46,420 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_64 [2021-08-27 04:54:46,420 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint16_identity [2021-08-27 04:54:46,420 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint64_identity [2021-08-27 04:54:46,420 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2021-08-27 04:54:46,420 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure cmemset [2021-08-27 04:54:46,420 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint32_identity [2021-08-27 04:54:46,423 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2021-08-27 04:54:46,423 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-08-27 04:54:46,423 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-27 04:54:46,423 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-27 04:54:46,460 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-27 04:54:46,461 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 04:54:46,463 INFO L168 Benchmark]: Toolchain (without parser) took 14216.60 ms. Allocated memory was 56.6 MB in the beginning and 121.6 MB in the end (delta: 65.0 MB). Free memory was 34.3 MB in the beginning and 46.7 MB in the end (delta: -12.4 MB). Peak memory consumption was 53.2 MB. Max. memory is 16.1 GB. [2021-08-27 04:54:46,463 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 56.6 MB. Free memory was 38.6 MB in the beginning and 38.6 MB in the end (delta: 44.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 04:54:46,463 INFO L168 Benchmark]: CACSL2BoogieTranslator took 407.71 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 34.1 MB in the beginning and 47.3 MB in the end (delta: -13.2 MB). Peak memory consumption was 14.6 MB. Max. memory is 16.1 GB. [2021-08-27 04:54:46,464 INFO L168 Benchmark]: Boogie Preprocessor took 71.10 ms. Allocated memory is still 69.2 MB. Free memory was 47.3 MB in the beginning and 45.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 04:54:46,464 INFO L168 Benchmark]: RCFGBuilder took 633.09 ms. Allocated memory is still 69.2 MB. Free memory was 45.0 MB in the beginning and 39.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-08-27 04:54:46,464 INFO L168 Benchmark]: TraceAbstraction took 13048.10 ms. Allocated memory was 69.2 MB in the beginning and 121.6 MB in the end (delta: 52.4 MB). Free memory was 39.3 MB in the beginning and 49.9 MB in the end (delta: -10.6 MB). Peak memory consumption was 40.7 MB. Max. memory is 16.1 GB. [2021-08-27 04:54:46,465 INFO L168 Benchmark]: Witness Printer took 47.78 ms. Allocated memory is still 121.6 MB. Free memory was 49.9 MB in the beginning and 46.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-27 04:54:46,466 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 56.6 MB. Free memory was 38.6 MB in the beginning and 38.6 MB in the end (delta: 44.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 407.71 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 34.1 MB in the beginning and 47.3 MB in the end (delta: -13.2 MB). Peak memory consumption was 14.6 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 71.10 ms. Allocated memory is still 69.2 MB. Free memory was 47.3 MB in the beginning and 45.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 633.09 ms. Allocated memory is still 69.2 MB. Free memory was 45.0 MB in the beginning and 39.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 13048.10 ms. Allocated memory was 69.2 MB in the beginning and 121.6 MB in the end (delta: 52.4 MB). Free memory was 39.3 MB in the beginning and 49.9 MB in the end (delta: -10.6 MB). Peak memory consumption was 40.7 MB. Max. memory is 16.1 GB. * Witness Printer took 47.78 ms. Allocated memory is still 121.6 MB. Free memory was 49.9 MB in the beginning and 46.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 518]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 518]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 523]: 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, 43 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 12985.1ms, OverallIterations: 9, TraceHistogramMax: 5, EmptinessCheckTime: 16.5ms, AutomataDifference: 6174.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 7.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 162 SDtfs, 442 SDslu, 432 SDs, 0 SdLazy, 2001 SolverSat, 198 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1480.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 260 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1149 ImplicationChecksByTransitivity, 6727.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred in iteration=6, InterpolantAutomatonStates: 119, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 53.1ms AutomataMinimizationTime, 9 MinimizatonAttempts, 22 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 57.4ms SsaConstructionTime, 336.9ms SatisfiabilityAnalysisTime, 4972.4ms InterpolantComputationTime, 257 NumberOfCodeBlocks, 257 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 245 ConstructedInterpolants, 0 QuantifiedInterpolants, 2008 SizeOfPredicates, 35 NumberOfNonLiveVariables, 397 ConjunctsInSsa, 157 ConjunctsInUnsatCore, 12 InterpolantComputations, 6 PerfectInterpolantSequences, 13/100 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 04:54:46,491 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...