./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 b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d866da7c-eb08-43b3-9d70-e048c7e52d49/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d866da7c-eb08-43b3-9d70-e048c7e52d49/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d866da7c-eb08-43b3-9d70-e048c7e52d49/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d866da7c-eb08-43b3-9d70-e048c7e52d49/bin/uautomizer-UnR33cPsHg/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/openbsd_cmemset-alloca-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d866da7c-eb08-43b3-9d70-e048c7e52d49/bin/uautomizer-UnR33cPsHg/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d866da7c-eb08-43b3-9d70-e048c7e52d49/bin/uautomizer-UnR33cPsHg --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 eba94063d18105b44b9503ed48a138d00b9b850cd51aae19571aab60c15e268e ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 08:38:41,694 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 08:38:41,697 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 08:38:41,759 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 08:38:41,760 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 08:38:41,765 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 08:38:41,768 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 08:38:41,773 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 08:38:41,776 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 08:38:41,785 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 08:38:41,786 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 08:38:41,789 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 08:38:41,789 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 08:38:41,793 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 08:38:41,797 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 08:38:41,805 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 08:38:41,809 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 08:38:41,811 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 08:38:41,813 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 08:38:41,819 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 08:38:41,825 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 08:38:41,826 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 08:38:41,831 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 08:38:41,832 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 08:38:41,840 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 08:38:41,841 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 08:38:41,841 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 08:38:41,844 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 08:38:41,845 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 08:38:41,847 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 08:38:41,848 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 08:38:41,850 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 08:38:41,852 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 08:38:41,854 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 08:38:41,857 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 08:38:41,857 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 08:38:41,858 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 08:38:41,859 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 08:38:41,859 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 08:38:41,860 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 08:38:41,861 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 08:38:41,863 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d866da7c-eb08-43b3-9d70-e048c7e52d49/bin/uautomizer-UnR33cPsHg/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-10-28 08:38:41,924 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 08:38:41,924 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 08:38:41,925 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 08:38:41,925 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 08:38:41,933 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 08:38:41,933 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 08:38:41,934 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 08:38:41,934 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 08:38:41,934 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 08:38:41,934 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 08:38:41,936 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 08:38:41,936 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 08:38:41,936 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 08:38:41,937 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-28 08:38:41,937 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-28 08:38:41,937 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-28 08:38:41,937 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 08:38:41,937 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-28 08:38:41,938 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 08:38:41,938 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 08:38:41,938 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 08:38:41,938 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 08:38:41,939 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 08:38:41,939 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 08:38:41,939 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 08:38:41,939 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 08:38:41,940 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 08:38:41,940 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 08:38:41,940 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 08:38:41,942 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d866da7c-eb08-43b3-9d70-e048c7e52d49/bin/uautomizer-UnR33cPsHg/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d866da7c-eb08-43b3-9d70-e048c7e52d49/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eba94063d18105b44b9503ed48a138d00b9b850cd51aae19571aab60c15e268e [2021-10-28 08:38:42,222 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 08:38:42,249 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 08:38:42,252 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 08:38:42,254 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 08:38:42,255 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 08:38:42,256 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d866da7c-eb08-43b3-9d70-e048c7e52d49/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/array-memsafety/openbsd_cmemset-alloca-1.i [2021-10-28 08:38:42,341 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d866da7c-eb08-43b3-9d70-e048c7e52d49/bin/uautomizer-UnR33cPsHg/data/8d6f2a2c1/2a8d25b6534a426fbe6f79c4eea9b572/FLAGba1251a90 [2021-10-28 08:38:42,874 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 08:38:42,882 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d866da7c-eb08-43b3-9d70-e048c7e52d49/sv-benchmarks/c/array-memsafety/openbsd_cmemset-alloca-1.i [2021-10-28 08:38:42,900 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d866da7c-eb08-43b3-9d70-e048c7e52d49/bin/uautomizer-UnR33cPsHg/data/8d6f2a2c1/2a8d25b6534a426fbe6f79c4eea9b572/FLAGba1251a90 [2021-10-28 08:38:43,204 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d866da7c-eb08-43b3-9d70-e048c7e52d49/bin/uautomizer-UnR33cPsHg/data/8d6f2a2c1/2a8d25b6534a426fbe6f79c4eea9b572 [2021-10-28 08:38:43,207 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 08:38:43,208 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-28 08:38:43,211 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 08:38:43,211 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 08:38:43,215 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 08:38:43,216 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:38:43" (1/1) ... [2021-10-28 08:38:43,217 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f2ed807 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:38:43, skipping insertion in model container [2021-10-28 08:38:43,217 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:38:43" (1/1) ... [2021-10-28 08:38:43,225 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 08:38:43,265 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 08:38:43,642 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 08:38:43,659 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 08:38:43,708 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 08:38:43,736 INFO L208 MainTranslator]: Completed translation [2021-10-28 08:38:43,737 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:38:43 WrapperNode [2021-10-28 08:38:43,737 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 08:38:43,738 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 08:38:43,739 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 08:38:43,739 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 08:38:43,751 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:38:43" (1/1) ... [2021-10-28 08:38:43,751 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:38:43" (1/1) ... [2021-10-28 08:38:43,765 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:38:43" (1/1) ... [2021-10-28 08:38:43,765 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:38:43" (1/1) ... [2021-10-28 08:38:43,778 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:38:43" (1/1) ... [2021-10-28 08:38:43,788 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:38:43" (1/1) ... [2021-10-28 08:38:43,796 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:38:43" (1/1) ... [2021-10-28 08:38:43,808 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 08:38:43,815 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 08:38:43,816 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 08:38:43,816 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 08:38:43,817 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:38:43" (1/1) ... [2021-10-28 08:38:43,826 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 08:38:43,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d866da7c-eb08-43b3-9d70-e048c7e52d49/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:38:43,856 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d866da7c-eb08-43b3-9d70-e048c7e52d49/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 08:38:43,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d866da7c-eb08-43b3-9d70-e048c7e52d49/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 08:38:43,892 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-28 08:38:43,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 08:38:43,893 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-10-28 08:38:43,893 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-10-28 08:38:43,893 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-10-28 08:38:43,893 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-10-28 08:38:43,893 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-10-28 08:38:43,893 INFO L138 BoogieDeclarations]: Found implementation of procedure cmemset [2021-10-28 08:38:43,894 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-28 08:38:43,894 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-28 08:38:43,894 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-28 08:38:43,894 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-28 08:38:43,894 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-28 08:38:43,894 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-28 08:38:43,894 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-28 08:38:43,894 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-28 08:38:43,895 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-28 08:38:43,895 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-28 08:38:43,895 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-28 08:38:43,895 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-28 08:38:43,895 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-28 08:38:43,895 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-28 08:38:43,895 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-28 08:38:43,895 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-28 08:38:43,896 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-28 08:38:43,896 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-10-28 08:38:43,896 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-10-28 08:38:43,896 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-10-28 08:38:43,896 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-10-28 08:38:43,896 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-10-28 08:38:43,896 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-28 08:38:43,897 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-28 08:38:43,897 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-28 08:38:43,897 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-28 08:38:43,897 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-28 08:38:43,897 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-28 08:38:43,898 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-28 08:38:43,898 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-28 08:38:43,898 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-28 08:38:43,898 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-28 08:38:43,898 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-28 08:38:43,898 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-28 08:38:43,898 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-28 08:38:43,898 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-28 08:38:43,899 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-28 08:38:43,899 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-28 08:38:43,899 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-28 08:38:43,899 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-28 08:38:43,899 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-28 08:38:43,900 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-28 08:38:43,900 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-28 08:38:43,900 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-28 08:38:43,901 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-28 08:38:43,901 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-28 08:38:43,901 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-28 08:38:43,901 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-28 08:38:43,902 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-28 08:38:43,902 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-28 08:38:43,902 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-28 08:38:43,903 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-28 08:38:43,903 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-28 08:38:43,903 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-28 08:38:43,903 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-28 08:38:43,903 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-28 08:38:43,903 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-28 08:38:43,904 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-28 08:38:43,904 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-28 08:38:43,905 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-28 08:38:43,905 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-28 08:38:43,906 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-28 08:38:43,906 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-28 08:38:43,907 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-28 08:38:43,907 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-28 08:38:43,908 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-28 08:38:43,908 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-28 08:38:43,908 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-28 08:38:43,908 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-28 08:38:43,909 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-28 08:38:43,909 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-28 08:38:43,909 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-28 08:38:43,909 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-28 08:38:43,910 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-28 08:38:43,910 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-28 08:38:43,910 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-28 08:38:43,910 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-28 08:38:43,910 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-28 08:38:43,910 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-28 08:38:43,911 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-28 08:38:43,911 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-28 08:38:43,911 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-28 08:38:43,911 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-28 08:38:43,911 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-28 08:38:43,911 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-28 08:38:43,912 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-28 08:38:43,912 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-28 08:38:43,912 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-28 08:38:43,912 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-28 08:38:43,912 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-28 08:38:43,912 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-28 08:38:43,912 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-28 08:38:43,912 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-28 08:38:43,913 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-28 08:38:43,913 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-28 08:38:43,913 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-28 08:38:43,913 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-28 08:38:43,913 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-28 08:38:43,914 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-28 08:38:43,914 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-28 08:38:43,914 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-28 08:38:43,914 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-28 08:38:43,914 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-28 08:38:43,914 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-28 08:38:43,914 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-28 08:38:43,915 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-28 08:38:43,915 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-28 08:38:43,915 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-28 08:38:43,915 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-10-28 08:38:43,916 INFO L130 BoogieDeclarations]: Found specification of procedure cmemset [2021-10-28 08:38:43,916 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-28 08:38:43,916 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-28 08:38:43,916 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 08:38:43,916 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 08:38:43,916 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-28 08:38:43,916 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 08:38:43,916 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-28 08:38:44,364 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 08:38:44,365 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-10-28 08:38:44,367 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:38:44 BoogieIcfgContainer [2021-10-28 08:38:44,367 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 08:38:44,370 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 08:38:44,370 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 08:38:44,374 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 08:38:44,375 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 08:38:43" (1/3) ... [2021-10-28 08:38:44,375 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cf9fc58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 08:38:44, skipping insertion in model container [2021-10-28 08:38:44,376 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:38:43" (2/3) ... [2021-10-28 08:38:44,376 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cf9fc58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 08:38:44, skipping insertion in model container [2021-10-28 08:38:44,377 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:38:44" (3/3) ... [2021-10-28 08:38:44,379 INFO L111 eAbstractionObserver]: Analyzing ICFG openbsd_cmemset-alloca-1.i [2021-10-28 08:38:44,386 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 08:38:44,386 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-10-28 08:38:44,454 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 08:38:44,462 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, mAutomataTypeConcurrency=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 [2021-10-28 08:38:44,463 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-28 08:38:44,482 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) [2021-10-28 08:38:44,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-28 08:38:44,503 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:38:44,504 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:38:44,504 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting cmemsetErr1REQUIRES_VIOLATION === [cmemsetErr0REQUIRES_VIOLATION, cmemsetErr1REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK] === [2021-10-28 08:38:44,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:38:44,511 INFO L85 PathProgramCache]: Analyzing trace with hash -1505405860, now seen corresponding path program 1 times [2021-10-28 08:38:44,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:38:44,523 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048599482] [2021-10-28 08:38:44,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:38:44,524 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:38:44,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:38:44,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 08:38:44,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:38:44,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:38:44,980 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:38:44,980 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048599482] [2021-10-28 08:38:44,981 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048599482] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:38:44,982 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:38:44,982 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-28 08:38:44,984 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116684356] [2021-10-28 08:38:44,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 08:38:44,991 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:38:45,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 08:38:45,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-10-28 08:38:45,012 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) [2021-10-28 08:38:45,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:38:45,321 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2021-10-28 08:38:45,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 08:38:45,323 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 [2021-10-28 08:38:45,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:38:45,333 INFO L225 Difference]: With dead ends: 32 [2021-10-28 08:38:45,333 INFO L226 Difference]: Without dead ends: 29 [2021-10-28 08:38:45,335 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2021-10-28 08:38:45,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-10-28 08:38:45,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2021-10-28 08:38:45,377 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) [2021-10-28 08:38:45,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2021-10-28 08:38:45,381 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 14 [2021-10-28 08:38:45,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:38:45,382 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2021-10-28 08:38:45,383 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) [2021-10-28 08:38:45,383 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2021-10-28 08:38:45,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-28 08:38:45,384 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:38:45,385 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:38:45,385 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 08:38:45,386 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting cmemsetErr0REQUIRES_VIOLATION === [cmemsetErr0REQUIRES_VIOLATION, cmemsetErr1REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK] === [2021-10-28 08:38:45,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:38:45,387 INFO L85 PathProgramCache]: Analyzing trace with hash -1505405861, now seen corresponding path program 1 times [2021-10-28 08:38:45,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:38:45,388 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047005384] [2021-10-28 08:38:45,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:38:45,389 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:38:45,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:38:45,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 08:38:45,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:38:45,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:38:45,600 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:38:45,601 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047005384] [2021-10-28 08:38:45,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047005384] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:38:45,604 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:38:45,604 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 08:38:45,604 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304245830] [2021-10-28 08:38:45,606 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 08:38:45,606 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:38:45,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 08:38:45,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-10-28 08:38:45,614 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) [2021-10-28 08:38:45,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:38:45,927 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2021-10-28 08:38:45,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 08:38:45,928 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 [2021-10-28 08:38:45,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:38:45,933 INFO L225 Difference]: With dead ends: 29 [2021-10-28 08:38:45,933 INFO L226 Difference]: Without dead ends: 29 [2021-10-28 08:38:45,934 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-10-28 08:38:45,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-10-28 08:38:45,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 26. [2021-10-28 08:38:45,945 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) [2021-10-28 08:38:45,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2021-10-28 08:38:45,947 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 14 [2021-10-28 08:38:45,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:38:45,947 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2021-10-28 08:38:45,948 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) [2021-10-28 08:38:45,948 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2021-10-28 08:38:45,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-28 08:38:45,950 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:38:45,950 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:38:45,950 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 08:38:45,950 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ENSURES_VIOLATIONMEMORY_LEAK === [cmemsetErr0REQUIRES_VIOLATION, cmemsetErr1REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK] === [2021-10-28 08:38:45,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:38:45,952 INFO L85 PathProgramCache]: Analyzing trace with hash 1092272849, now seen corresponding path program 1 times [2021-10-28 08:38:45,952 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:38:45,953 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419159811] [2021-10-28 08:38:45,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:38:45,954 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:38:45,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:38:46,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 08:38:46,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:38:46,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-28 08:38:46,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:38:46,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:38:46,098 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:38:46,098 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419159811] [2021-10-28 08:38:46,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419159811] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:38:46,099 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:38:46,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 08:38:46,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624843210] [2021-10-28 08:38:46,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 08:38:46,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:38:46,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 08:38:46,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-28 08:38:46,102 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) [2021-10-28 08:38:46,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:38:46,278 INFO L93 Difference]: Finished difference Result 31 states and 33 transitions. [2021-10-28 08:38:46,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 08:38:46,279 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 [2021-10-28 08:38:46,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:38:46,280 INFO L225 Difference]: With dead ends: 31 [2021-10-28 08:38:46,280 INFO L226 Difference]: Without dead ends: 28 [2021-10-28 08:38:46,281 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2021-10-28 08:38:46,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-10-28 08:38:46,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2021-10-28 08:38:46,285 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) [2021-10-28 08:38:46,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2021-10-28 08:38:46,286 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 17 [2021-10-28 08:38:46,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:38:46,287 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2021-10-28 08:38:46,287 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) [2021-10-28 08:38:46,287 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2021-10-28 08:38:46,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-28 08:38:46,288 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:38:46,288 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:38:46,289 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-28 08:38:46,289 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting cmemsetErr1REQUIRES_VIOLATION === [cmemsetErr0REQUIRES_VIOLATION, cmemsetErr1REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK] === [2021-10-28 08:38:46,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:38:46,290 INFO L85 PathProgramCache]: Analyzing trace with hash 1853612607, now seen corresponding path program 1 times [2021-10-28 08:38:46,290 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:38:46,290 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055493772] [2021-10-28 08:38:46,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:38:46,291 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:38:46,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:38:46,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 08:38:46,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:38:46,410 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:38:46,410 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:38:46,410 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055493772] [2021-10-28 08:38:46,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055493772] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:38:46,411 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:38:46,411 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 08:38:46,411 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041805130] [2021-10-28 08:38:46,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 08:38:46,412 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:38:46,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 08:38:46,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-28 08:38:46,413 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) [2021-10-28 08:38:46,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:38:46,587 INFO L93 Difference]: Finished difference Result 41 states and 42 transitions. [2021-10-28 08:38:46,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 08:38:46,587 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 [2021-10-28 08:38:46,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:38:46,592 INFO L225 Difference]: With dead ends: 41 [2021-10-28 08:38:46,592 INFO L226 Difference]: Without dead ends: 41 [2021-10-28 08:38:46,593 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-10-28 08:38:46,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-10-28 08:38:46,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 38. [2021-10-28 08:38:46,606 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) [2021-10-28 08:38:46,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 40 transitions. [2021-10-28 08:38:46,609 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 40 transitions. Word has length 19 [2021-10-28 08:38:46,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:38:46,610 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 40 transitions. [2021-10-28 08:38:46,611 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) [2021-10-28 08:38:46,611 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 40 transitions. [2021-10-28 08:38:46,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-28 08:38:46,612 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:38:46,612 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:38:46,613 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-28 08:38:46,615 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting cmemsetErr1REQUIRES_VIOLATION === [cmemsetErr0REQUIRES_VIOLATION, cmemsetErr1REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK] === [2021-10-28 08:38:46,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:38:46,615 INFO L85 PathProgramCache]: Analyzing trace with hash 2111778045, now seen corresponding path program 1 times [2021-10-28 08:38:46,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:38:46,616 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920684934] [2021-10-28 08:38:46,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:38:46,617 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:38:46,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:38:47,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 08:38:47,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:38:47,047 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:38:47,047 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:38:47,048 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920684934] [2021-10-28 08:38:47,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920684934] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 08:38:47,048 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [108563518] [2021-10-28 08:38:47,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:38:47,049 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 08:38:47,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d866da7c-eb08-43b3-9d70-e048c7e52d49/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:38:47,052 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d866da7c-eb08-43b3-9d70-e048c7e52d49/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 08:38:47,073 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d866da7c-eb08-43b3-9d70-e048c7e52d49/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-28 08:38:47,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:38:47,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 35 conjunts are in the unsatisfiable core [2021-10-28 08:38:47,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:38:47,329 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 [2021-10-28 08:38:47,849 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:38:47,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [108563518] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 08:38:47,850 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 08:38:47,850 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 21 [2021-10-28 08:38:47,851 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513277830] [2021-10-28 08:38:47,852 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-28 08:38:47,853 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:38:47,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-28 08:38:47,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=413, Unknown=0, NotChecked=0, Total=462 [2021-10-28 08:38:47,855 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) [2021-10-28 08:38:48,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:38:48,721 INFO L93 Difference]: Finished difference Result 44 states and 47 transitions. [2021-10-28 08:38:48,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-28 08:38:48,722 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 [2021-10-28 08:38:48,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:38:48,723 INFO L225 Difference]: With dead ends: 44 [2021-10-28 08:38:48,723 INFO L226 Difference]: Without dead ends: 44 [2021-10-28 08:38:48,724 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=126, Invalid=804, Unknown=0, NotChecked=0, Total=930 [2021-10-28 08:38:48,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-10-28 08:38:48,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2021-10-28 08:38:48,729 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) [2021-10-28 08:38:48,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 46 transitions. [2021-10-28 08:38:48,730 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 46 transitions. Word has length 19 [2021-10-28 08:38:48,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:38:48,731 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 46 transitions. [2021-10-28 08:38:48,731 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) [2021-10-28 08:38:48,731 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 46 transitions. [2021-10-28 08:38:48,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-28 08:38:48,733 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:38:48,733 INFO L513 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] [2021-10-28 08:38:48,777 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d866da7c-eb08-43b3-9d70-e048c7e52d49/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-28 08:38:48,950 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d866da7c-eb08-43b3-9d70-e048c7e52d49/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 08:38:48,950 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ENSURES_VIOLATIONMEMORY_LEAK === [cmemsetErr0REQUIRES_VIOLATION, cmemsetErr1REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK] === [2021-10-28 08:38:48,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:38:48,951 INFO L85 PathProgramCache]: Analyzing trace with hash 538552420, now seen corresponding path program 1 times [2021-10-28 08:38:48,951 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:38:48,951 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548870624] [2021-10-28 08:38:48,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:38:48,951 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:38:48,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:38:49,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 08:38:49,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:38:49,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-28 08:38:49,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:38:49,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:38:49,074 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:38:49,074 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548870624] [2021-10-28 08:38:49,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548870624] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:38:49,075 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:38:49,075 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 08:38:49,080 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655286966] [2021-10-28 08:38:49,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 08:38:49,081 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:38:49,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 08:38:49,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-28 08:38:49,082 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) [2021-10-28 08:38:49,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:38:49,176 INFO L93 Difference]: Finished difference Result 42 states and 45 transitions. [2021-10-28 08:38:49,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 08:38:49,177 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 [2021-10-28 08:38:49,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:38:49,179 INFO L225 Difference]: With dead ends: 42 [2021-10-28 08:38:49,179 INFO L226 Difference]: Without dead ends: 25 [2021-10-28 08:38:49,181 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-28 08:38:49,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-10-28 08:38:49,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-10-28 08:38:49,192 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) [2021-10-28 08:38:49,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2021-10-28 08:38:49,193 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 22 [2021-10-28 08:38:49,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:38:49,194 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2021-10-28 08:38:49,194 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) [2021-10-28 08:38:49,194 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2021-10-28 08:38:49,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-28 08:38:49,195 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:38:49,195 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:38:49,196 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-28 08:38:49,196 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting cmemsetErr1REQUIRES_VIOLATION === [cmemsetErr0REQUIRES_VIOLATION, cmemsetErr1REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK] === [2021-10-28 08:38:49,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:38:49,197 INFO L85 PathProgramCache]: Analyzing trace with hash 402998846, now seen corresponding path program 2 times [2021-10-28 08:38:49,197 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:38:49,198 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019792533] [2021-10-28 08:38:49,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:38:49,198 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:38:49,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:38:49,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 08:38:49,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:38:49,698 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:38:49,698 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:38:49,699 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019792533] [2021-10-28 08:38:49,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019792533] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 08:38:49,699 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1144425588] [2021-10-28 08:38:49,699 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 08:38:49,699 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 08:38:49,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d866da7c-eb08-43b3-9d70-e048c7e52d49/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:38:49,704 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d866da7c-eb08-43b3-9d70-e048c7e52d49/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 08:38:49,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d866da7c-eb08-43b3-9d70-e048c7e52d49/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-28 08:38:49,857 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 08:38:49,857 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 08:38:49,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 51 conjunts are in the unsatisfiable core [2021-10-28 08:38:49,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:38:49,914 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 [2021-10-28 08:38:50,559 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:38:50,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1144425588] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 08:38:50,559 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 08:38:50,560 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13] total 28 [2021-10-28 08:38:50,560 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686837687] [2021-10-28 08:38:50,561 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-10-28 08:38:50,561 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:38:50,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-10-28 08:38:50,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=744, Unknown=0, NotChecked=0, Total=812 [2021-10-28 08:38:50,562 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) [2021-10-28 08:38:52,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:38:52,042 INFO L93 Difference]: Finished difference Result 30 states and 31 transitions. [2021-10-28 08:38:52,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-28 08:38:52,043 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 [2021-10-28 08:38:52,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:38:52,044 INFO L225 Difference]: With dead ends: 30 [2021-10-28 08:38:52,044 INFO L226 Difference]: Without dead ends: 0 [2021-10-28 08:38:52,045 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=235, Invalid=1835, Unknown=0, NotChecked=0, Total=2070 [2021-10-28 08:38:52,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-28 08:38:52,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-28 08:38:52,046 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) [2021-10-28 08:38:52,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-28 08:38:52,046 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 24 [2021-10-28 08:38:52,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:38:52,047 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 08:38:52,047 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) [2021-10-28 08:38:52,047 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-28 08:38:52,047 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-28 08:38:52,050 INFO L764 garLoopResultBuilder]: Registering result SAFE for location cmemsetErr0REQUIRES_VIOLATION [2021-10-28 08:38:52,051 INFO L764 garLoopResultBuilder]: Registering result SAFE for location cmemsetErr1REQUIRES_VIOLATION [2021-10-28 08:38:52,051 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr0ENSURES_VIOLATIONMEMORY_LEAK [2021-10-28 08:38:52,093 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d866da7c-eb08-43b3-9d70-e048c7e52d49/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-10-28 08:38:52,252 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d866da7c-eb08-43b3-9d70-e048c7e52d49/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 08:38:52,255 INFO L731 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1] [2021-10-28 08:38:52,256 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 08:38:52,259 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 08:38:52 BoogieIcfgContainer [2021-10-28 08:38:52,259 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 08:38:52,259 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 08:38:52,260 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 08:38:52,260 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 08:38:52,260 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:38:44" (3/4) ... [2021-10-28 08:38:52,264 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-28 08:38:52,271 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2021-10-28 08:38:52,271 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_32 [2021-10-28 08:38:52,271 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_64 [2021-10-28 08:38:52,271 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint16_identity [2021-10-28 08:38:52,271 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint64_identity [2021-10-28 08:38:52,271 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2021-10-28 08:38:52,272 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure cmemset [2021-10-28 08:38:52,272 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint32_identity [2021-10-28 08:38:52,276 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2021-10-28 08:38:52,277 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-10-28 08:38:52,277 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 08:38:52,277 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 08:38:52,316 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d866da7c-eb08-43b3-9d70-e048c7e52d49/bin/uautomizer-UnR33cPsHg/witness.graphml [2021-10-28 08:38:52,316 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 08:38:52,318 INFO L168 Benchmark]: Toolchain (without parser) took 9108.77 ms. Allocated memory was 102.8 MB in the beginning and 148.9 MB in the end (delta: 46.1 MB). Free memory was 67.5 MB in the beginning and 78.4 MB in the end (delta: -10.9 MB). Peak memory consumption was 34.6 MB. Max. memory is 16.1 GB. [2021-10-28 08:38:52,319 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 102.8 MB. Free memory is still 57.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 08:38:52,319 INFO L168 Benchmark]: CACSL2BoogieTranslator took 526.88 ms. Allocated memory is still 102.8 MB. Free memory was 67.3 MB in the beginning and 71.3 MB in the end (delta: -4.0 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-28 08:38:52,320 INFO L168 Benchmark]: Boogie Preprocessor took 71.08 ms. Allocated memory is still 102.8 MB. Free memory was 71.3 MB in the beginning and 68.9 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 08:38:52,321 INFO L168 Benchmark]: RCFGBuilder took 552.34 ms. Allocated memory is still 102.8 MB. Free memory was 68.9 MB in the beginning and 51.8 MB in the end (delta: 17.2 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-10-28 08:38:52,321 INFO L168 Benchmark]: TraceAbstraction took 7889.06 ms. Allocated memory was 102.8 MB in the beginning and 148.9 MB in the end (delta: 46.1 MB). Free memory was 51.5 MB in the beginning and 81.5 MB in the end (delta: -30.1 MB). Peak memory consumption was 18.1 MB. Max. memory is 16.1 GB. [2021-10-28 08:38:52,322 INFO L168 Benchmark]: Witness Printer took 56.78 ms. Allocated memory is still 148.9 MB. Free memory was 81.5 MB in the beginning and 78.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 08:38:52,325 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 102.8 MB. Free memory is still 57.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 526.88 ms. Allocated memory is still 102.8 MB. Free memory was 67.3 MB in the beginning and 71.3 MB in the end (delta: -4.0 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 71.08 ms. Allocated memory is still 102.8 MB. Free memory was 71.3 MB in the beginning and 68.9 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 552.34 ms. Allocated memory is still 102.8 MB. Free memory was 68.9 MB in the beginning and 51.8 MB in the end (delta: 17.2 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 7889.06 ms. Allocated memory was 102.8 MB in the beginning and 148.9 MB in the end (delta: 46.1 MB). Free memory was 51.5 MB in the beginning and 81.5 MB in the end (delta: -30.1 MB). Peak memory consumption was 18.1 MB. Max. memory is 16.1 GB. * Witness Printer took 56.78 ms. Allocated memory is still 148.9 MB. Free memory was 81.5 MB in the beginning and 78.4 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, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 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: 7.8s, OverallIterations: 7, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 3.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 127 SDtfs, 312 SDslu, 310 SDs, 0 SdLazy, 1192 SolverSat, 110 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 162 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 499 ImplicationChecksByTransitivity, 3.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred in iteration=5, InterpolantAutomatonStates: 78, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 11 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.8s InterpolantComputationTime, 172 NumberOfCodeBlocks, 172 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 163 ConstructedInterpolants, 0 QuantifiedInterpolants, 1068 SizeOfPredicates, 20 NumberOfNonLiveVariables, 233 ConjunctsInSsa, 86 ConjunctsInUnsatCore, 9 InterpolantComputations, 5 PerfectInterpolantSequences, 4/24 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! [2021-10-28 08:38:52,379 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d866da7c-eb08-43b3-9d70-e048c7e52d49/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...