./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/mult_array_unsafe.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a646f4e7-a451-4c14-965a-0bd6c4e22a7f/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a646f4e7-a451-4c14-965a-0bd6c4e22a7f/bin/uautomizer-WNIpwEf4Nt/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a646f4e7-a451-4c14-965a-0bd6c4e22a7f/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a646f4e7-a451-4c14-965a-0bd6c4e22a7f/bin/uautomizer-WNIpwEf4Nt/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/mult_array_unsafe.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a646f4e7-a451-4c14-965a-0bd6c4e22a7f/bin/uautomizer-WNIpwEf4Nt/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a646f4e7-a451-4c14-965a-0bd6c4e22a7f/bin/uautomizer-WNIpwEf4Nt --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 4ceec10d001c6e3ab8acae30cb42f114023e2890 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref) --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 00:38:56,903 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 00:38:56,907 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 00:38:56,958 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 00:38:56,959 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 00:38:56,961 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 00:38:56,964 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 00:38:56,967 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 00:38:56,971 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 00:38:56,972 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 00:38:56,974 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 00:38:56,977 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 00:38:56,977 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 00:38:56,979 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 00:38:56,982 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 00:38:56,984 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 00:38:56,986 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 00:38:56,987 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 00:38:56,991 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 00:38:56,995 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 00:38:56,998 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 00:38:57,000 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 00:38:57,002 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 00:38:57,004 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 00:38:57,010 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 00:38:57,010 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 00:38:57,011 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 00:38:57,013 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 00:38:57,013 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 00:38:57,015 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 00:38:57,016 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 00:38:57,017 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 00:38:57,019 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 00:38:57,020 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 00:38:57,021 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 00:38:57,022 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 00:38:57,022 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 00:38:57,023 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 00:38:57,023 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 00:38:57,024 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 00:38:57,025 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 00:38:57,026 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a646f4e7-a451-4c14-965a-0bd6c4e22a7f/bin/uautomizer-WNIpwEf4Nt/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-10-13 00:38:57,062 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 00:38:57,062 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 00:38:57,063 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 00:38:57,063 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 00:38:57,065 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 00:38:57,066 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 00:38:57,066 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 00:38:57,067 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 00:38:57,067 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 00:38:57,067 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 00:38:57,068 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 00:38:57,068 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 00:38:57,068 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 00:38:57,069 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-13 00:38:57,069 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-13 00:38:57,069 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-13 00:38:57,070 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 00:38:57,070 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 00:38:57,070 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 00:38:57,071 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 00:38:57,071 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 00:38:57,072 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 00:38:57,072 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 00:38:57,072 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 00:38:57,073 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 00:38:57,073 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 00:38:57,073 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-13 00:38:57,074 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 00:38:57,074 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 00:38:57,074 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_a646f4e7-a451-4c14-965a-0bd6c4e22a7f/bin/uautomizer-WNIpwEf4Nt/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a646f4e7-a451-4c14-965a-0bd6c4e22a7f/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4ceec10d001c6e3ab8acae30cb42f114023e2890 [2021-10-13 00:38:57,415 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 00:38:57,445 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 00:38:57,449 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 00:38:57,451 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 00:38:57,452 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 00:38:57,453 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a646f4e7-a451-4c14-965a-0bd6c4e22a7f/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/array-memsafety/mult_array_unsafe.i [2021-10-13 00:38:57,567 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a646f4e7-a451-4c14-965a-0bd6c4e22a7f/bin/uautomizer-WNIpwEf4Nt/data/93ea3e6df/1385cb61969f4af4a044ee19ce8a9594/FLAG6a01a151d [2021-10-13 00:38:58,286 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 00:38:58,287 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a646f4e7-a451-4c14-965a-0bd6c4e22a7f/sv-benchmarks/c/array-memsafety/mult_array_unsafe.i [2021-10-13 00:38:58,312 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a646f4e7-a451-4c14-965a-0bd6c4e22a7f/bin/uautomizer-WNIpwEf4Nt/data/93ea3e6df/1385cb61969f4af4a044ee19ce8a9594/FLAG6a01a151d [2021-10-13 00:38:58,347 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a646f4e7-a451-4c14-965a-0bd6c4e22a7f/bin/uautomizer-WNIpwEf4Nt/data/93ea3e6df/1385cb61969f4af4a044ee19ce8a9594 [2021-10-13 00:38:58,351 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 00:38:58,355 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-13 00:38:58,358 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 00:38:58,358 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 00:38:58,363 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 00:38:58,364 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:38:58" (1/1) ... [2021-10-13 00:38:58,367 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bfed17e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:38:58, skipping insertion in model container [2021-10-13 00:38:58,367 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:38:58" (1/1) ... [2021-10-13 00:38:58,377 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 00:38:58,437 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 00:38:58,888 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:38:58,900 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 00:38:58,949 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:38:59,000 INFO L208 MainTranslator]: Completed translation [2021-10-13 00:38:59,001 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:38:59 WrapperNode [2021-10-13 00:38:59,001 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 00:38:59,003 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 00:38:59,003 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 00:38:59,003 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 00:38:59,018 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:38:59" (1/1) ... [2021-10-13 00:38:59,021 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:38:59" (1/1) ... [2021-10-13 00:38:59,061 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:38:59" (1/1) ... [2021-10-13 00:38:59,062 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:38:59" (1/1) ... [2021-10-13 00:38:59,079 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:38:59" (1/1) ... [2021-10-13 00:38:59,084 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:38:59" (1/1) ... [2021-10-13 00:38:59,088 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:38:59" (1/1) ... [2021-10-13 00:38:59,095 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 00:38:59,097 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 00:38:59,097 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 00:38:59,097 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 00:38:59,099 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:38:59" (1/1) ... [2021-10-13 00:38:59,113 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 00:38:59,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a646f4e7-a451-4c14-965a-0bd6c4e22a7f/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:38:59,167 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a646f4e7-a451-4c14-965a-0bd6c4e22a7f/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 00:38:59,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a646f4e7-a451-4c14-965a-0bd6c4e22a7f/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 00:38:59,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-13 00:38:59,262 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 00:38:59,263 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-10-13 00:38:59,264 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-10-13 00:38:59,264 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-10-13 00:38:59,264 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-10-13 00:38:59,265 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-10-13 00:38:59,265 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-13 00:38:59,265 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-13 00:38:59,265 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-13 00:38:59,266 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-13 00:38:59,266 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-13 00:38:59,266 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-13 00:38:59,266 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-13 00:38:59,267 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-13 00:38:59,267 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-13 00:38:59,267 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-13 00:38:59,267 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-13 00:38:59,268 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-13 00:38:59,268 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-13 00:38:59,268 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-13 00:38:59,268 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-13 00:38:59,269 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-13 00:38:59,269 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-13 00:38:59,269 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-10-13 00:38:59,269 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-10-13 00:38:59,270 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-10-13 00:38:59,270 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-10-13 00:38:59,270 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-10-13 00:38:59,270 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-13 00:38:59,271 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-13 00:38:59,271 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-13 00:38:59,271 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-13 00:38:59,271 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-13 00:38:59,272 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-13 00:38:59,272 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-13 00:38:59,272 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-13 00:38:59,272 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-13 00:38:59,273 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-13 00:38:59,273 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-13 00:38:59,273 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-13 00:38:59,273 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-13 00:38:59,274 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-13 00:38:59,274 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-13 00:38:59,274 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-13 00:38:59,274 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-13 00:38:59,275 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-13 00:38:59,275 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-13 00:38:59,275 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-13 00:38:59,276 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-13 00:38:59,276 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-13 00:38:59,276 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-13 00:38:59,276 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-13 00:38:59,277 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-13 00:38:59,277 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-13 00:38:59,277 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-13 00:38:59,278 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-13 00:38:59,278 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-13 00:38:59,278 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-13 00:38:59,278 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-13 00:38:59,279 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-13 00:38:59,279 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-13 00:38:59,279 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-13 00:38:59,280 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-13 00:38:59,280 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-13 00:38:59,280 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-13 00:38:59,280 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-13 00:38:59,281 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-13 00:38:59,281 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-13 00:38:59,281 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-13 00:38:59,282 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-13 00:38:59,282 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-13 00:38:59,282 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-13 00:38:59,282 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-13 00:38:59,283 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-13 00:38:59,283 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-13 00:38:59,283 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-13 00:38:59,283 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-13 00:38:59,284 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-13 00:38:59,284 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-13 00:38:59,284 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-13 00:38:59,285 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-13 00:38:59,285 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-13 00:38:59,285 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-13 00:38:59,285 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-13 00:38:59,286 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-13 00:38:59,286 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-13 00:38:59,286 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-13 00:38:59,287 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-13 00:38:59,287 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-13 00:38:59,287 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-13 00:38:59,287 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-13 00:38:59,288 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-13 00:38:59,288 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-13 00:38:59,288 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-13 00:38:59,288 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-13 00:38:59,289 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-13 00:38:59,289 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-13 00:38:59,289 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-13 00:38:59,289 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-13 00:38:59,290 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-13 00:38:59,290 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-13 00:38:59,290 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-13 00:38:59,290 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-13 00:38:59,291 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-13 00:38:59,291 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-13 00:38:59,291 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-13 00:38:59,291 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-13 00:38:59,291 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-13 00:38:59,292 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-13 00:38:59,292 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-13 00:38:59,292 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-13 00:38:59,292 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-13 00:38:59,293 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-13 00:38:59,293 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-13 00:38:59,293 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-10-13 00:38:59,293 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-13 00:38:59,293 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 00:38:59,294 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 00:38:59,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-13 00:38:59,294 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-13 00:38:59,294 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-13 00:38:59,294 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 00:38:59,955 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 00:38:59,955 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-10-13 00:38:59,958 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:38:59 BoogieIcfgContainer [2021-10-13 00:38:59,958 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 00:38:59,961 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 00:38:59,961 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 00:38:59,966 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 00:38:59,966 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 12:38:58" (1/3) ... [2021-10-13 00:38:59,968 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a69215b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:38:59, skipping insertion in model container [2021-10-13 00:38:59,968 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:38:59" (2/3) ... [2021-10-13 00:38:59,969 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a69215b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:38:59, skipping insertion in model container [2021-10-13 00:38:59,969 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:38:59" (3/3) ... [2021-10-13 00:38:59,971 INFO L111 eAbstractionObserver]: Analyzing ICFG mult_array_unsafe.i [2021-10-13 00:38:59,979 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 00:38:59,979 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-10-13 00:39:00,044 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 00:39:00,053 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 00:39:00,054 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-10-13 00:39:00,074 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 21 states have (on average 1.6666666666666667) internal successors, (35), 28 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-13 00:39:00,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-13 00:39:00,085 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:39:00,086 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:39:00,087 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr6ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 2 more)] === [2021-10-13 00:39:00,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:39:00,095 INFO L82 PathProgramCache]: Analyzing trace with hash 1489715982, now seen corresponding path program 1 times [2021-10-13 00:39:00,108 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:39:00,109 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158790552] [2021-10-13 00:39:00,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:39:00,111 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:39:00,244 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:39:00,245 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1180305380] [2021-10-13 00:39:00,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:39:00,246 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:39:00,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a646f4e7-a451-4c14-965a-0bd6c4e22a7f/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:39:00,250 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a646f4e7-a451-4c14-965a-0bd6c4e22a7f/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:39:00,283 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a646f4e7-a451-4c14-965a-0bd6c4e22a7f/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-13 00:39:00,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:39:00,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 00:39:00,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:39:00,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:39:00,594 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:39:00,595 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158790552] [2021-10-13 00:39:00,595 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:39:00,596 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1180305380] [2021-10-13 00:39:00,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1180305380] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:39:00,597 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:39:00,598 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 00:39:00,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969708875] [2021-10-13 00:39:00,606 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 00:39:00,607 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:39:00,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 00:39:00,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 00:39:00,629 INFO L87 Difference]: Start difference. First operand has 33 states, 21 states have (on average 1.6666666666666667) internal successors, (35), 28 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-13 00:39:00,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:39:00,694 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2021-10-13 00:39:00,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 00:39:00,696 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-10-13 00:39:00,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:39:00,706 INFO L225 Difference]: With dead ends: 33 [2021-10-13 00:39:00,706 INFO L226 Difference]: Without dead ends: 30 [2021-10-13 00:39:00,708 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 25.6ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:39:00,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-10-13 00:39:00,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-10-13 00:39:00,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 20 states have (on average 1.5) internal successors, (30), 26 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-13 00:39:00,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2021-10-13 00:39:00,743 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 12 [2021-10-13 00:39:00,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:39:00,744 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2021-10-13 00:39:00,744 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-13 00:39:00,744 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2021-10-13 00:39:00,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-13 00:39:00,746 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:39:00,746 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:39:00,797 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a646f4e7-a451-4c14-965a-0bd6c4e22a7f/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-13 00:39:00,972 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a646f4e7-a451-4c14-965a-0bd6c4e22a7f/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:39:00,973 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 2 more)] === [2021-10-13 00:39:00,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:39:00,975 INFO L82 PathProgramCache]: Analyzing trace with hash -1063444840, now seen corresponding path program 1 times [2021-10-13 00:39:00,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:39:00,976 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943438923] [2021-10-13 00:39:00,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:39:00,976 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:39:01,002 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:39:01,003 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1269745755] [2021-10-13 00:39:01,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:39:01,043 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:39:01,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a646f4e7-a451-4c14-965a-0bd6c4e22a7f/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:39:01,051 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a646f4e7-a451-4c14-965a-0bd6c4e22a7f/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:39:01,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a646f4e7-a451-4c14-965a-0bd6c4e22a7f/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-13 00:39:01,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:39:01,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 00:39:01,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:39:01,389 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-10-13 00:39:01,390 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 1 case distinctions, treesize of input 9 treesize of output 11 [2021-10-13 00:39:01,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:39:01,431 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:39:01,431 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943438923] [2021-10-13 00:39:01,432 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:39:01,433 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1269745755] [2021-10-13 00:39:01,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1269745755] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:39:01,436 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:39:01,436 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 00:39:01,437 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927564552] [2021-10-13 00:39:01,438 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 00:39:01,439 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:39:01,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 00:39:01,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:39:01,447 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-13 00:39:01,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:39:01,489 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2021-10-13 00:39:01,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 00:39:01,490 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2021-10-13 00:39:01,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:39:01,494 INFO L225 Difference]: With dead ends: 28 [2021-10-13 00:39:01,494 INFO L226 Difference]: Without dead ends: 28 [2021-10-13 00:39:01,495 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:39:01,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-10-13 00:39:01,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-10-13 00:39:01,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 20 states have (on average 1.4) internal successors, (28), 24 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-13 00:39:01,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2021-10-13 00:39:01,507 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 13 [2021-10-13 00:39:01,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:39:01,508 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2021-10-13 00:39:01,509 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-13 00:39:01,509 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2021-10-13 00:39:01,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-13 00:39:01,510 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:39:01,510 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:39:01,565 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a646f4e7-a451-4c14-965a-0bd6c4e22a7f/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-13 00:39:01,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a646f4e7-a451-4c14-965a-0bd6c4e22a7f/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:39:01,729 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 2 more)] === [2021-10-13 00:39:01,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:39:01,730 INFO L82 PathProgramCache]: Analyzing trace with hash -1063444839, now seen corresponding path program 1 times [2021-10-13 00:39:01,730 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:39:01,731 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771708663] [2021-10-13 00:39:01,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:39:01,731 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:39:01,753 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:39:01,762 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [757607761] [2021-10-13 00:39:01,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:39:01,765 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:39:01,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a646f4e7-a451-4c14-965a-0bd6c4e22a7f/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:39:01,767 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a646f4e7-a451-4c14-965a-0bd6c4e22a7f/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:39:01,788 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a646f4e7-a451-4c14-965a-0bd6c4e22a7f/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-13 00:39:01,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:39:01,939 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:39:01,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:39:02,019 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:39:02,020 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-13 00:39:02,021 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr1REQUIRES_VIOLATION [2021-10-13 00:39:02,024 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION [2021-10-13 00:39:02,024 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2REQUIRES_VIOLATION [2021-10-13 00:39:02,025 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3REQUIRES_VIOLATION [2021-10-13 00:39:02,025 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4REQUIRES_VIOLATION [2021-10-13 00:39:02,025 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr5REQUIRES_VIOLATION [2021-10-13 00:39:02,026 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr6ENSURES_VIOLATIONMEMORY_LEAK [2021-10-13 00:39:02,108 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a646f4e7-a451-4c14-965a-0bd6c4e22a7f/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-13 00:39:02,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a646f4e7-a451-4c14-965a-0bd6c4e22a7f/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:39:02,254 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 00:39:02,274 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 12:39:02 BoogieIcfgContainer [2021-10-13 00:39:02,274 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 00:39:02,275 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 00:39:02,275 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 00:39:02,275 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 00:39:02,276 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:38:59" (3/4) ... [2021-10-13 00:39:02,278 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-13 00:39:02,330 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a646f4e7-a451-4c14-965a-0bd6c4e22a7f/bin/uautomizer-WNIpwEf4Nt/witness.graphml [2021-10-13 00:39:02,330 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 00:39:02,332 INFO L168 Benchmark]: Toolchain (without parser) took 3975.69 ms. Allocated memory is still 134.2 MB. Free memory was 101.1 MB in the beginning and 85.6 MB in the end (delta: 15.5 MB). Peak memory consumption was 12.2 MB. Max. memory is 16.1 GB. [2021-10-13 00:39:02,332 INFO L168 Benchmark]: CDTParser took 0.49 ms. Allocated memory is still 92.3 MB. Free memory is still 46.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:39:02,333 INFO L168 Benchmark]: CACSL2BoogieTranslator took 644.19 ms. Allocated memory is still 134.2 MB. Free memory was 101.1 MB in the beginning and 105.0 MB in the end (delta: -3.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 00:39:02,334 INFO L168 Benchmark]: Boogie Preprocessor took 93.01 ms. Allocated memory is still 134.2 MB. Free memory was 105.0 MB in the beginning and 102.6 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 00:39:02,335 INFO L168 Benchmark]: RCFGBuilder took 861.66 ms. Allocated memory is still 134.2 MB. Free memory was 102.6 MB in the beginning and 83.8 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2021-10-13 00:39:02,335 INFO L168 Benchmark]: TraceAbstraction took 2313.22 ms. Allocated memory is still 134.2 MB. Free memory was 83.3 MB in the beginning and 87.7 MB in the end (delta: -4.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:39:02,336 INFO L168 Benchmark]: Witness Printer took 55.45 ms. Allocated memory is still 134.2 MB. Free memory was 87.7 MB in the beginning and 85.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 00:39:02,340 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.49 ms. Allocated memory is still 92.3 MB. Free memory is still 46.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 644.19 ms. Allocated memory is still 134.2 MB. Free memory was 101.1 MB in the beginning and 105.0 MB in the end (delta: -3.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 93.01 ms. Allocated memory is still 134.2 MB. Free memory was 105.0 MB in the beginning and 102.6 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 861.66 ms. Allocated memory is still 134.2 MB. Free memory was 102.6 MB in the beginning and 83.8 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2313.22 ms. Allocated memory is still 134.2 MB. Free memory was 83.3 MB in the beginning and 87.7 MB in the end (delta: -4.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 55.45 ms. Allocated memory is still 134.2 MB. Free memory was 87.7 MB in the beginning and 85.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 522]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L513] int i, j; [L514] int length = __VERIFIER_nondet_int(); [L515] COND TRUE length < 1 || length >= 2147483647 / sizeof(int) [L515] length = 1 VAL [length=1] [L516] int fac = __VERIFIER_nondet_int(); [L517] COND TRUE fac < 1 || fac >= 2147483647 / (sizeof(int) * length) [L517] fac = 1 VAL [fac=1, length=1] [L518] int *arr = __builtin_alloca (length); [L519] int *arr2 = __builtin_alloca (fac*length); VAL [__builtin_alloca (fac*length)={2:0}, __builtin_alloca (length)={3:0}, arr={3:0}, arr2={2:0}, fac=1, length=1] [L520] COND FALSE !(!arr || !arr2) [L521] i=0 VAL [__builtin_alloca (fac*length)={2:0}, __builtin_alloca (length)={3:0}, arr={3:0}, arr2={2:0}, fac=1, i=0, length=1] [L521] COND TRUE i