./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/add_last_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_abdc1b15-eabd-4090-8905-648cad119398/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abdc1b15-eabd-4090-8905-648cad119398/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_abdc1b15-eabd-4090-8905-648cad119398/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abdc1b15-eabd-4090-8905-648cad119398/bin/uautomizer-WNIpwEf4Nt/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/add_last_unsafe.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abdc1b15-eabd-4090-8905-648cad119398/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_abdc1b15-eabd-4090-8905-648cad119398/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 6dcea98e309b9ccb2c2dc4a4f9353c6c61175172 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 01:24:13,262 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 01:24:13,265 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 01:24:13,309 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 01:24:13,310 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 01:24:13,312 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 01:24:13,314 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 01:24:13,316 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 01:24:13,318 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 01:24:13,319 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 01:24:13,320 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 01:24:13,321 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 01:24:13,322 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 01:24:13,323 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 01:24:13,325 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 01:24:13,326 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 01:24:13,332 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 01:24:13,338 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 01:24:13,344 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 01:24:13,351 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 01:24:13,353 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 01:24:13,355 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 01:24:13,358 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 01:24:13,359 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 01:24:13,366 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 01:24:13,366 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 01:24:13,367 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 01:24:13,369 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 01:24:13,369 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 01:24:13,371 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 01:24:13,372 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 01:24:13,373 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 01:24:13,375 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 01:24:13,376 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 01:24:13,378 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 01:24:13,378 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 01:24:13,379 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 01:24:13,379 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 01:24:13,380 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 01:24:13,381 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 01:24:13,381 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 01:24:13,382 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abdc1b15-eabd-4090-8905-648cad119398/bin/uautomizer-WNIpwEf4Nt/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-10-13 01:24:13,425 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 01:24:13,429 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 01:24:13,430 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 01:24:13,430 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 01:24:13,432 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 01:24:13,433 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 01:24:13,433 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 01:24:13,433 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 01:24:13,433 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 01:24:13,434 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 01:24:13,435 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 01:24:13,435 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 01:24:13,436 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 01:24:13,436 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-13 01:24:13,436 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-13 01:24:13,436 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-13 01:24:13,436 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 01:24:13,437 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 01:24:13,437 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 01:24:13,437 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 01:24:13,438 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 01:24:13,438 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 01:24:13,438 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 01:24:13,438 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 01:24:13,439 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 01:24:13,439 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 01:24:13,439 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-13 01:24:13,439 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 01:24:13,440 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 01:24:13,440 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_abdc1b15-eabd-4090-8905-648cad119398/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abdc1b15-eabd-4090-8905-648cad119398/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6dcea98e309b9ccb2c2dc4a4f9353c6c61175172 [2021-10-13 01:24:13,697 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 01:24:13,720 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 01:24:13,724 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 01:24:13,725 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 01:24:13,726 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 01:24:13,727 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abdc1b15-eabd-4090-8905-648cad119398/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/array-memsafety/add_last_unsafe.i [2021-10-13 01:24:13,804 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abdc1b15-eabd-4090-8905-648cad119398/bin/uautomizer-WNIpwEf4Nt/data/d0e925e8e/f47683674b484e5590847ea563a15232/FLAG4891a4393 [2021-10-13 01:24:14,308 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 01:24:14,308 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abdc1b15-eabd-4090-8905-648cad119398/sv-benchmarks/c/array-memsafety/add_last_unsafe.i [2021-10-13 01:24:14,323 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abdc1b15-eabd-4090-8905-648cad119398/bin/uautomizer-WNIpwEf4Nt/data/d0e925e8e/f47683674b484e5590847ea563a15232/FLAG4891a4393 [2021-10-13 01:24:14,624 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abdc1b15-eabd-4090-8905-648cad119398/bin/uautomizer-WNIpwEf4Nt/data/d0e925e8e/f47683674b484e5590847ea563a15232 [2021-10-13 01:24:14,626 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 01:24:14,628 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-13 01:24:14,629 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 01:24:14,629 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 01:24:14,632 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 01:24:14,633 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:24:14" (1/1) ... [2021-10-13 01:24:14,634 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@594a4fe6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:24:14, skipping insertion in model container [2021-10-13 01:24:14,634 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:24:14" (1/1) ... [2021-10-13 01:24:14,641 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 01:24:14,684 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 01:24:14,974 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 01:24:14,982 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 01:24:15,019 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 01:24:15,046 INFO L208 MainTranslator]: Completed translation [2021-10-13 01:24:15,046 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:24:15 WrapperNode [2021-10-13 01:24:15,047 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 01:24:15,048 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 01:24:15,048 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 01:24:15,048 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 01:24:15,059 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:24:15" (1/1) ... [2021-10-13 01:24:15,060 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:24:15" (1/1) ... [2021-10-13 01:24:15,072 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:24:15" (1/1) ... [2021-10-13 01:24:15,072 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:24:15" (1/1) ... [2021-10-13 01:24:15,085 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:24:15" (1/1) ... [2021-10-13 01:24:15,089 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:24:15" (1/1) ... [2021-10-13 01:24:15,098 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:24:15" (1/1) ... [2021-10-13 01:24:15,103 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 01:24:15,104 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 01:24:15,104 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 01:24:15,104 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 01:24:15,113 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:24:15" (1/1) ... [2021-10-13 01:24:15,121 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 01:24:15,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abdc1b15-eabd-4090-8905-648cad119398/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:24:15,143 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abdc1b15-eabd-4090-8905-648cad119398/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 01:24:15,145 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abdc1b15-eabd-4090-8905-648cad119398/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 01:24:15,181 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-13 01:24:15,181 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 01:24:15,181 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-10-13 01:24:15,181 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-10-13 01:24:15,182 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-10-13 01:24:15,182 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-10-13 01:24:15,182 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-10-13 01:24:15,182 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-13 01:24:15,182 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-13 01:24:15,183 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-13 01:24:15,183 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-13 01:24:15,183 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-13 01:24:15,183 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-13 01:24:15,183 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-13 01:24:15,184 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-13 01:24:15,184 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-13 01:24:15,184 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-13 01:24:15,184 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-13 01:24:15,184 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-13 01:24:15,185 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-13 01:24:15,185 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-13 01:24:15,185 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-13 01:24:15,185 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-13 01:24:15,185 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-13 01:24:15,186 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-10-13 01:24:15,186 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-10-13 01:24:15,186 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-10-13 01:24:15,186 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-10-13 01:24:15,186 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-10-13 01:24:15,187 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-13 01:24:15,187 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-13 01:24:15,187 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-13 01:24:15,187 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-13 01:24:15,187 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-13 01:24:15,188 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-13 01:24:15,188 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-13 01:24:15,188 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-13 01:24:15,188 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-13 01:24:15,188 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-13 01:24:15,188 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-13 01:24:15,189 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-13 01:24:15,189 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-13 01:24:15,189 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-13 01:24:15,189 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-13 01:24:15,189 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-13 01:24:15,190 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-13 01:24:15,190 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-13 01:24:15,190 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-13 01:24:15,190 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-13 01:24:15,190 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-13 01:24:15,191 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-13 01:24:15,191 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-13 01:24:15,191 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-13 01:24:15,191 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-13 01:24:15,191 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-13 01:24:15,192 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-13 01:24:15,192 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-13 01:24:15,192 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-13 01:24:15,192 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-13 01:24:15,192 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-13 01:24:15,193 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-13 01:24:15,193 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-13 01:24:15,193 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-13 01:24:15,193 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-13 01:24:15,193 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-13 01:24:15,193 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-13 01:24:15,194 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-13 01:24:15,194 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-13 01:24:15,194 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-13 01:24:15,194 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-13 01:24:15,194 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-13 01:24:15,195 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-13 01:24:15,195 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-13 01:24:15,195 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-13 01:24:15,195 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-13 01:24:15,195 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-13 01:24:15,196 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-13 01:24:15,196 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-13 01:24:15,196 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-13 01:24:15,196 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-13 01:24:15,196 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-13 01:24:15,196 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-13 01:24:15,197 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-13 01:24:15,197 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-13 01:24:15,197 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-13 01:24:15,197 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-13 01:24:15,197 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-13 01:24:15,198 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-13 01:24:15,198 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-13 01:24:15,198 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-13 01:24:15,198 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-13 01:24:15,198 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-13 01:24:15,199 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-13 01:24:15,199 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-13 01:24:15,199 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-13 01:24:15,199 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-13 01:24:15,199 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-13 01:24:15,199 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-13 01:24:15,200 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-13 01:24:15,200 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-13 01:24:15,200 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-13 01:24:15,200 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-13 01:24:15,200 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-13 01:24:15,201 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-13 01:24:15,201 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-13 01:24:15,201 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-13 01:24:15,201 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-13 01:24:15,201 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-13 01:24:15,202 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-13 01:24:15,202 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-13 01:24:15,202 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-13 01:24:15,202 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-13 01:24:15,202 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-13 01:24:15,202 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-13 01:24:15,203 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-13 01:24:15,203 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-10-13 01:24:15,203 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-13 01:24:15,203 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 01:24:15,203 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 01:24:15,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-13 01:24:15,204 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-13 01:24:15,204 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-13 01:24:15,204 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 01:24:15,674 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 01:24:15,674 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-10-13 01:24:15,676 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:24:15 BoogieIcfgContainer [2021-10-13 01:24:15,676 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 01:24:15,678 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 01:24:15,679 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 01:24:15,682 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 01:24:15,683 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 01:24:14" (1/3) ... [2021-10-13 01:24:15,684 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35e339e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:24:15, skipping insertion in model container [2021-10-13 01:24:15,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:24:15" (2/3) ... [2021-10-13 01:24:15,684 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35e339e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:24:15, skipping insertion in model container [2021-10-13 01:24:15,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:24:15" (3/3) ... [2021-10-13 01:24:15,686 INFO L111 eAbstractionObserver]: Analyzing ICFG add_last_unsafe.i [2021-10-13 01:24:15,691 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 01:24:15,692 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2021-10-13 01:24:15,739 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 01:24:15,746 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 01:24:15,746 INFO L340 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2021-10-13 01:24:15,762 INFO L276 IsEmpty]: Start isEmpty. Operand has 38 states, 20 states have (on average 1.95) internal successors, (39), 33 states have internal predecessors, (39), 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 01:24:15,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-13 01:24:15,770 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:24:15,770 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:24:15,771 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr12ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 8 more)] === [2021-10-13 01:24:15,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:24:15,777 INFO L82 PathProgramCache]: Analyzing trace with hash -2072257551, now seen corresponding path program 1 times [2021-10-13 01:24:15,786 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:24:15,787 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109729970] [2021-10-13 01:24:15,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:24:15,788 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:24:15,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:24:16,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-13 01:24:16,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:24:16,028 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 01:24:16,029 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:24:16,029 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109729970] [2021-10-13 01:24:16,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109729970] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 01:24:16,030 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:24:16,030 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 01:24:16,032 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568225355] [2021-10-13 01:24:16,037 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 01:24:16,037 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:24:16,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 01:24:16,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 01:24:16,053 INFO L87 Difference]: Start difference. First operand has 38 states, 20 states have (on average 1.95) internal successors, (39), 33 states have internal predecessors, (39), 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 1.75) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-13 01:24:16,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:24:16,141 INFO L93 Difference]: Finished difference Result 38 states and 40 transitions. [2021-10-13 01:24:16,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 01:24:16,143 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2021-10-13 01:24:16,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:24:16,151 INFO L225 Difference]: With dead ends: 38 [2021-10-13 01:24:16,151 INFO L226 Difference]: Without dead ends: 35 [2021-10-13 01:24:16,153 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.3ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 01:24:16,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-10-13 01:24:16,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2021-10-13 01:24:16,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 31 states have internal predecessors, (34), 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 01:24:16,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2021-10-13 01:24:16,186 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 10 [2021-10-13 01:24:16,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:24:16,187 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2021-10-13 01:24:16,187 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-13 01:24:16,188 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2021-10-13 01:24:16,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-13 01:24:16,188 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:24:16,189 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:24:16,189 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 01:24:16,189 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr2REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 8 more)] === [2021-10-13 01:24:16,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:24:16,190 INFO L82 PathProgramCache]: Analyzing trace with hash 184525090, now seen corresponding path program 1 times [2021-10-13 01:24:16,191 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:24:16,191 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754327089] [2021-10-13 01:24:16,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:24:16,191 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:24:16,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:24:16,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-13 01:24:16,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:24:16,261 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 01:24:16,261 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:24:16,262 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754327089] [2021-10-13 01:24:16,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754327089] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 01:24:16,262 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:24:16,262 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-13 01:24:16,263 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021863108] [2021-10-13 01:24:16,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 01:24:16,264 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:24:16,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 01:24:16,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-13 01:24:16,266 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-13 01:24:16,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:24:16,347 INFO L93 Difference]: Finished difference Result 41 states and 43 transitions. [2021-10-13 01:24:16,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 01:24:16,348 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-10-13 01:24:16,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:24:16,349 INFO L225 Difference]: With dead ends: 41 [2021-10-13 01:24:16,349 INFO L226 Difference]: Without dead ends: 41 [2021-10-13 01:24:16,350 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 25.0ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-13 01:24:16,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-10-13 01:24:16,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 36. [2021-10-13 01:24:16,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 20 states have (on average 1.75) internal successors, (35), 32 states have internal predecessors, (35), 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 01:24:16,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2021-10-13 01:24:16,356 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 11 [2021-10-13 01:24:16,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:24:16,356 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2021-10-13 01:24:16,356 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-13 01:24:16,357 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2021-10-13 01:24:16,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-13 01:24:16,357 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:24:16,358 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:24:16,358 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-13 01:24:16,358 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 8 more)] === [2021-10-13 01:24:16,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:24:16,359 INFO L82 PathProgramCache]: Analyzing trace with hash 184525140, now seen corresponding path program 1 times [2021-10-13 01:24:16,359 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:24:16,359 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438716052] [2021-10-13 01:24:16,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:24:16,360 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:24:16,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:24:16,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-13 01:24:16,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:24:16,409 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 01:24:16,409 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:24:16,410 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438716052] [2021-10-13 01:24:16,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438716052] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 01:24:16,410 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:24:16,410 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 01:24:16,411 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361856779] [2021-10-13 01:24:16,411 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 01:24:16,411 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:24:16,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 01:24:16,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 01:24:16,412 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-13 01:24:16,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:24:16,464 INFO L93 Difference]: Finished difference Result 33 states and 35 transitions. [2021-10-13 01:24:16,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 01:24:16,464 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-10-13 01:24:16,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:24:16,466 INFO L225 Difference]: With dead ends: 33 [2021-10-13 01:24:16,466 INFO L226 Difference]: Without dead ends: 33 [2021-10-13 01:24:16,466 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.9ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 01:24:16,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-10-13 01:24:16,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2021-10-13 01:24:16,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 20 states have (on average 1.6) internal successors, (32), 29 states have internal predecessors, (32), 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 01:24:16,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2021-10-13 01:24:16,471 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 11 [2021-10-13 01:24:16,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:24:16,471 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2021-10-13 01:24:16,472 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-13 01:24:16,472 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2021-10-13 01:24:16,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-13 01:24:16,472 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:24:16,473 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:24:16,473 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-13 01:24:16,473 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 8 more)] === [2021-10-13 01:24:16,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:24:16,474 INFO L82 PathProgramCache]: Analyzing trace with hash 184525141, now seen corresponding path program 1 times [2021-10-13 01:24:16,474 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:24:16,474 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938684806] [2021-10-13 01:24:16,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:24:16,475 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:24:16,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:24:16,492 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 01:24:16,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:24:16,527 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 01:24:16,527 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-13 01:24:16,528 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr1REQUIRES_VIOLATION [2021-10-13 01:24:16,530 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION [2021-10-13 01:24:16,531 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2REQUIRES_VIOLATION [2021-10-13 01:24:16,531 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3REQUIRES_VIOLATION [2021-10-13 01:24:16,531 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4REQUIRES_VIOLATION [2021-10-13 01:24:16,532 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr5REQUIRES_VIOLATION [2021-10-13 01:24:16,532 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr6REQUIRES_VIOLATION [2021-10-13 01:24:16,532 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr7REQUIRES_VIOLATION [2021-10-13 01:24:16,532 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr8REQUIRES_VIOLATION [2021-10-13 01:24:16,532 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr9REQUIRES_VIOLATION [2021-10-13 01:24:16,533 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr10REQUIRES_VIOLATION [2021-10-13 01:24:16,533 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr11REQUIRES_VIOLATION [2021-10-13 01:24:16,533 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr12ENSURES_VIOLATIONMEMORY_LEAK [2021-10-13 01:24:16,533 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-13 01:24:16,540 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 01:24:16,555 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 01:24:16 BoogieIcfgContainer [2021-10-13 01:24:16,555 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 01:24:16,556 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 01:24:16,556 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 01:24:16,556 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 01:24:16,557 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:24:15" (3/4) ... [2021-10-13 01:24:16,559 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-13 01:24:16,591 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abdc1b15-eabd-4090-8905-648cad119398/bin/uautomizer-WNIpwEf4Nt/witness.graphml [2021-10-13 01:24:16,592 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 01:24:16,593 INFO L168 Benchmark]: Toolchain (without parser) took 1964.63 ms. Allocated memory was 98.6 MB in the beginning and 125.8 MB in the end (delta: 27.3 MB). Free memory was 62.6 MB in the beginning and 61.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 28.8 MB. Max. memory is 16.1 GB. [2021-10-13 01:24:16,594 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 98.6 MB. Free memory was 68.5 MB in the beginning and 68.4 MB in the end (delta: 29.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 01:24:16,595 INFO L168 Benchmark]: CACSL2BoogieTranslator took 417.75 ms. Allocated memory is still 98.6 MB. Free memory was 62.2 MB in the beginning and 68.0 MB in the end (delta: -5.8 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-13 01:24:16,595 INFO L168 Benchmark]: Boogie Preprocessor took 55.66 ms. Allocated memory is still 98.6 MB. Free memory was 68.0 MB in the beginning and 65.7 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 01:24:16,596 INFO L168 Benchmark]: RCFGBuilder took 572.40 ms. Allocated memory is still 98.6 MB. Free memory was 65.7 MB in the beginning and 47.6 MB in the end (delta: 18.1 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2021-10-13 01:24:16,596 INFO L168 Benchmark]: TraceAbstraction took 877.09 ms. Allocated memory was 98.6 MB in the beginning and 125.8 MB in the end (delta: 27.3 MB). Free memory was 47.2 MB in the beginning and 63.2 MB in the end (delta: -16.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-13 01:24:16,597 INFO L168 Benchmark]: Witness Printer took 35.93 ms. Allocated memory is still 125.8 MB. Free memory was 63.2 MB in the beginning and 61.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 01:24:16,600 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 98.6 MB. Free memory was 68.5 MB in the beginning and 68.4 MB in the end (delta: 29.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 417.75 ms. Allocated memory is still 98.6 MB. Free memory was 62.2 MB in the beginning and 68.0 MB in the end (delta: -5.8 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 55.66 ms. Allocated memory is still 98.6 MB. Free memory was 68.0 MB in the beginning and 65.7 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 572.40 ms. Allocated memory is still 98.6 MB. Free memory was 65.7 MB in the beginning and 47.6 MB in the end (delta: 18.1 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 877.09 ms. Allocated memory was 98.6 MB in the beginning and 125.8 MB in the end (delta: 27.3 MB). Free memory was 47.2 MB in the beginning and 63.2 MB in the end (delta: -16.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Witness Printer took 35.93 ms. Allocated memory is still 125.8 MB. Free memory was 63.2 MB in the beginning and 61.1 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 [L515] length = 1 VAL [length=1] [L516] int *arr = __builtin_alloca (length); VAL [__builtin_alloca (length)={2:0}, arr={2:0}, length=1] [L517] COND FALSE !(!arr) [L518] int *a = arr; [L520] int k = 0; VAL [__builtin_alloca (length)={2:0}, a={2:0}, arr={2:0}, k=0, length=1] [L520] COND TRUE k < length [L522] arr[k] = __VERIFIER_nondet_int() - UnprovableResult [Line: 522]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 525]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 525]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 525]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 525]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 526]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 526]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 526]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 526]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 526]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 526]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 512]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 53 locations, 13 error locations. Started 1 CEGAR loops. OverallTime: 800.8ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 13.9ms, AutomataDifference: 254.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 11.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 71 SDtfs, 89 SDslu, 45 SDs, 0 SdLazy, 155 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 135.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 49.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred in iteration=0, InterpolantAutomatonStates: 14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 28.8ms AutomataMinimizationTime, 3 MinimizatonAttempts, 5 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 12.7ms SsaConstructionTime, 54.6ms SatisfiabilityAnalysisTime, 173.3ms InterpolantComputationTime, 43 NumberOfCodeBlocks, 43 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 29 ConstructedInterpolants, 0 QuantifiedInterpolants, 85 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-10-13 01:24:16,638 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abdc1b15-eabd-4090-8905-648cad119398/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...