./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 b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5c8b5a9-4153-4e34-8c19-253a515e9075/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5c8b5a9-4153-4e34-8c19-253a515e9075/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5c8b5a9-4153-4e34-8c19-253a515e9075/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5c8b5a9-4153-4e34-8c19-253a515e9075/bin/uautomizer-GMMbpWq8iD/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/mult_array_unsafe.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5c8b5a9-4153-4e34-8c19-253a515e9075/bin/uautomizer-GMMbpWq8iD/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5c8b5a9-4153-4e34-8c19-253a515e9075/bin/uautomizer-GMMbpWq8iD --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 d94197bb45011c55db64c4b2cad037cf69a2430f75ef8668b076bdef6ca69182 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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-b2eff8b [2021-10-28 22:54:31,898 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 22:54:31,902 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 22:54:31,965 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 22:54:31,966 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 22:54:31,972 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 22:54:31,974 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 22:54:31,979 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 22:54:31,983 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 22:54:31,989 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 22:54:31,991 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 22:54:31,993 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 22:54:31,994 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 22:54:31,997 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 22:54:31,999 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 22:54:32,006 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 22:54:32,008 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 22:54:32,009 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 22:54:32,012 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 22:54:32,022 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 22:54:32,024 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 22:54:32,026 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 22:54:32,030 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 22:54:32,031 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 22:54:32,042 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 22:54:32,043 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 22:54:32,044 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 22:54:32,046 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 22:54:32,047 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 22:54:32,049 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 22:54:32,050 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 22:54:32,051 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 22:54:32,054 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 22:54:32,056 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 22:54:32,058 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 22:54:32,058 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 22:54:32,059 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 22:54:32,060 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 22:54:32,060 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 22:54:32,061 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 22:54:32,062 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 22:54:32,064 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5c8b5a9-4153-4e34-8c19-253a515e9075/bin/uautomizer-GMMbpWq8iD/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-10-28 22:54:32,116 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 22:54:32,117 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 22:54:32,118 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 22:54:32,118 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 22:54:32,127 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 22:54:32,128 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 22:54:32,128 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 22:54:32,129 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 22:54:32,129 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 22:54:32,129 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 22:54:32,130 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 22:54:32,131 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 22:54:32,131 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 22:54:32,131 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-28 22:54:32,132 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-28 22:54:32,132 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-28 22:54:32,132 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 22:54:32,133 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-28 22:54:32,133 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 22:54:32,133 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 22:54:32,133 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 22:54:32,134 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 22:54:32,134 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 22:54:32,134 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 22:54:32,135 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 22:54:32,135 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 22:54:32,135 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 22:54:32,136 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 22:54:32,136 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 22:54:32,136 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_b5c8b5a9-4153-4e34-8c19-253a515e9075/bin/uautomizer-GMMbpWq8iD/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5c8b5a9-4153-4e34-8c19-253a515e9075/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d94197bb45011c55db64c4b2cad037cf69a2430f75ef8668b076bdef6ca69182 [2021-10-28 22:54:32,489 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 22:54:32,512 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 22:54:32,515 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 22:54:32,517 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 22:54:32,518 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 22:54:32,519 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5c8b5a9-4153-4e34-8c19-253a515e9075/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/array-memsafety/mult_array_unsafe.i [2021-10-28 22:54:32,627 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5c8b5a9-4153-4e34-8c19-253a515e9075/bin/uautomizer-GMMbpWq8iD/data/7f3b659ce/47bc382422894e31ba0b8a864563e772/FLAG02dae89b1 [2021-10-28 22:54:33,307 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 22:54:33,308 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5c8b5a9-4153-4e34-8c19-253a515e9075/sv-benchmarks/c/array-memsafety/mult_array_unsafe.i [2021-10-28 22:54:33,328 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5c8b5a9-4153-4e34-8c19-253a515e9075/bin/uautomizer-GMMbpWq8iD/data/7f3b659ce/47bc382422894e31ba0b8a864563e772/FLAG02dae89b1 [2021-10-28 22:54:33,580 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5c8b5a9-4153-4e34-8c19-253a515e9075/bin/uautomizer-GMMbpWq8iD/data/7f3b659ce/47bc382422894e31ba0b8a864563e772 [2021-10-28 22:54:33,585 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 22:54:33,587 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-28 22:54:33,598 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 22:54:33,599 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 22:54:33,603 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 22:54:33,604 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:54:33" (1/1) ... [2021-10-28 22:54:33,605 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1104bec0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:54:33, skipping insertion in model container [2021-10-28 22:54:33,606 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:54:33" (1/1) ... [2021-10-28 22:54:33,617 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 22:54:33,670 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 22:54:33,993 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 22:54:34,003 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 22:54:34,050 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 22:54:34,086 INFO L208 MainTranslator]: Completed translation [2021-10-28 22:54:34,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:54:34 WrapperNode [2021-10-28 22:54:34,087 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 22:54:34,088 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 22:54:34,089 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 22:54:34,089 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 22:54:34,107 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:54:34" (1/1) ... [2021-10-28 22:54:34,107 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:54:34" (1/1) ... [2021-10-28 22:54:34,123 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:54:34" (1/1) ... [2021-10-28 22:54:34,123 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:54:34" (1/1) ... [2021-10-28 22:54:34,140 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:54:34" (1/1) ... [2021-10-28 22:54:34,145 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:54:34" (1/1) ... [2021-10-28 22:54:34,149 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:54:34" (1/1) ... [2021-10-28 22:54:34,156 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 22:54:34,157 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 22:54:34,158 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 22:54:34,158 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 22:54:34,159 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:54:34" (1/1) ... [2021-10-28 22:54:34,170 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 22:54:34,183 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5c8b5a9-4153-4e34-8c19-253a515e9075/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:54:34,196 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5c8b5a9-4153-4e34-8c19-253a515e9075/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 22:54:34,213 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5c8b5a9-4153-4e34-8c19-253a515e9075/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 22:54:34,253 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-28 22:54:34,253 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 22:54:34,254 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-10-28 22:54:34,254 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-10-28 22:54:34,254 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-10-28 22:54:34,254 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-10-28 22:54:34,255 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-10-28 22:54:34,255 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-28 22:54:34,255 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-28 22:54:34,255 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-28 22:54:34,256 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-28 22:54:34,256 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-28 22:54:34,256 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-28 22:54:34,257 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-28 22:54:34,257 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-28 22:54:34,257 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-28 22:54:34,257 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-28 22:54:34,258 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-28 22:54:34,258 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-28 22:54:34,258 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-28 22:54:34,258 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-28 22:54:34,259 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-28 22:54:34,259 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-28 22:54:34,259 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-28 22:54:34,259 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-10-28 22:54:34,260 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-10-28 22:54:34,260 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-10-28 22:54:34,260 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-10-28 22:54:34,260 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-10-28 22:54:34,261 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-28 22:54:34,261 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-28 22:54:34,261 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-28 22:54:34,261 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-28 22:54:34,262 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-28 22:54:34,262 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-28 22:54:34,262 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-28 22:54:34,263 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-28 22:54:34,263 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-28 22:54:34,263 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-28 22:54:34,263 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-28 22:54:34,264 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-28 22:54:34,264 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-28 22:54:34,264 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-28 22:54:34,264 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-28 22:54:34,265 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-28 22:54:34,265 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-28 22:54:34,265 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-28 22:54:34,265 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-28 22:54:34,266 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-28 22:54:34,266 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-28 22:54:34,266 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-28 22:54:34,266 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-28 22:54:34,267 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-28 22:54:34,267 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-28 22:54:34,267 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-28 22:54:34,267 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-28 22:54:34,268 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-28 22:54:34,268 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-28 22:54:34,268 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-28 22:54:34,269 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-28 22:54:34,269 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-28 22:54:34,269 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-28 22:54:34,269 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-28 22:54:34,269 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-28 22:54:34,270 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-28 22:54:34,270 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-28 22:54:34,270 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-28 22:54:34,270 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-28 22:54:34,270 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-28 22:54:34,271 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-28 22:54:34,271 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-28 22:54:34,271 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-28 22:54:34,271 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-28 22:54:34,271 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-28 22:54:34,272 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-28 22:54:34,272 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-28 22:54:34,272 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-28 22:54:34,272 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-28 22:54:34,273 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-28 22:54:34,273 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-28 22:54:34,273 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-28 22:54:34,273 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-28 22:54:34,273 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-28 22:54:34,274 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-28 22:54:34,274 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-28 22:54:34,274 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-28 22:54:34,274 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-28 22:54:34,274 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-28 22:54:34,275 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-28 22:54:34,275 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-28 22:54:34,275 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-28 22:54:34,275 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-28 22:54:34,275 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-28 22:54:34,276 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-28 22:54:34,276 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-28 22:54:34,276 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-28 22:54:34,276 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-28 22:54:34,276 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-28 22:54:34,277 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-28 22:54:34,277 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-28 22:54:34,277 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-28 22:54:34,280 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-28 22:54:34,280 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-28 22:54:34,280 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-28 22:54:34,280 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-28 22:54:34,280 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-28 22:54:34,280 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-28 22:54:34,281 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-28 22:54:34,281 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-28 22:54:34,281 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-28 22:54:34,281 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-28 22:54:34,281 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-28 22:54:34,281 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-28 22:54:34,282 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-28 22:54:34,282 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-28 22:54:34,282 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-10-28 22:54:34,282 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-28 22:54:34,282 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 22:54:34,282 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 22:54:34,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-28 22:54:34,283 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-28 22:54:34,283 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-28 22:54:34,283 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 22:54:34,874 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 22:54:34,874 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-10-28 22:54:34,876 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:54:34 BoogieIcfgContainer [2021-10-28 22:54:34,877 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 22:54:34,884 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 22:54:34,884 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 22:54:34,891 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 22:54:34,896 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 10:54:33" (1/3) ... [2021-10-28 22:54:34,897 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15e7588 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 10:54:34, skipping insertion in model container [2021-10-28 22:54:34,898 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:54:34" (2/3) ... [2021-10-28 22:54:34,898 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15e7588 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 10:54:34, skipping insertion in model container [2021-10-28 22:54:34,899 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:54:34" (3/3) ... [2021-10-28 22:54:34,901 INFO L111 eAbstractionObserver]: Analyzing ICFG mult_array_unsafe.i [2021-10-28 22:54:34,913 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 22:54:34,914 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-10-28 22:54:34,974 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 22:54:34,982 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-28 22:54:34,982 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-10-28 22:54:35,001 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) [2021-10-28 22:54:35,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-28 22:54:35,011 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:54:35,012 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:54:35,013 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr6ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 2 more)] === [2021-10-28 22:54:35,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:54:35,020 INFO L85 PathProgramCache]: Analyzing trace with hash 1489715982, now seen corresponding path program 1 times [2021-10-28 22:54:35,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:54:35,032 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966995048] [2021-10-28 22:54:35,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:54:35,034 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:54:35,195 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 22:54:35,196 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1522945821] [2021-10-28 22:54:35,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:54:35,197 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:54:35,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5c8b5a9-4153-4e34-8c19-253a515e9075/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:54:35,203 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5c8b5a9-4153-4e34-8c19-253a515e9075/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 22:54:35,229 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5c8b5a9-4153-4e34-8c19-253a515e9075/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-28 22:54:35,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:54:35,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-28 22:54:35,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:54:35,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:54:35,625 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:54:35,625 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966995048] [2021-10-28 22:54:35,625 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 22:54:35,626 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1522945821] [2021-10-28 22:54:35,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1522945821] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:54:35,628 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:54:35,628 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 22:54:35,631 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533251012] [2021-10-28 22:54:35,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 22:54:35,638 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:54:35,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 22:54:35,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 22:54:35,662 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) [2021-10-28 22:54:35,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:54:35,735 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2021-10-28 22:54:35,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 22:54:35,739 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 [2021-10-28 22:54:35,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:54:35,753 INFO L225 Difference]: With dead ends: 33 [2021-10-28 22:54:35,753 INFO L226 Difference]: Without dead ends: 30 [2021-10-28 22:54:35,755 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 22:54:35,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-10-28 22:54:35,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-10-28 22:54:35,817 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) [2021-10-28 22:54:35,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2021-10-28 22:54:35,821 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 12 [2021-10-28 22:54:35,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:54:35,822 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2021-10-28 22:54:35,823 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) [2021-10-28 22:54:35,823 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2021-10-28 22:54:35,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-28 22:54:35,824 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:54:35,825 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:54:35,875 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5c8b5a9-4153-4e34-8c19-253a515e9075/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-28 22:54:36,045 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5c8b5a9-4153-4e34-8c19-253a515e9075/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-10-28 22:54:36,046 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 2 more)] === [2021-10-28 22:54:36,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:54:36,047 INFO L85 PathProgramCache]: Analyzing trace with hash -1063444840, now seen corresponding path program 1 times [2021-10-28 22:54:36,047 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:54:36,048 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932770623] [2021-10-28 22:54:36,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:54:36,048 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:54:36,080 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 22:54:36,082 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [421986895] [2021-10-28 22:54:36,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:54:36,083 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:54:36,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5c8b5a9-4153-4e34-8c19-253a515e9075/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:54:36,084 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5c8b5a9-4153-4e34-8c19-253a515e9075/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 22:54:36,113 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5c8b5a9-4153-4e34-8c19-253a515e9075/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-28 22:54:36,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:54:36,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 22:54:36,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:54:36,346 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-10-28 22:54:36,347 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 [2021-10-28 22:54:36,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:54:36,386 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:54:36,386 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932770623] [2021-10-28 22:54:36,386 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 22:54:36,386 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [421986895] [2021-10-28 22:54:36,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [421986895] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:54:36,389 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:54:36,389 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 22:54:36,390 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438839691] [2021-10-28 22:54:36,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 22:54:36,391 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:54:36,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 22:54:36,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 22:54:36,394 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) [2021-10-28 22:54:36,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:54:36,435 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2021-10-28 22:54:36,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 22:54:36,436 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 [2021-10-28 22:54:36,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:54:36,438 INFO L225 Difference]: With dead ends: 28 [2021-10-28 22:54:36,439 INFO L226 Difference]: Without dead ends: 28 [2021-10-28 22:54:36,440 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 22:54:36,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-10-28 22:54:36,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-10-28 22:54:36,446 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) [2021-10-28 22:54:36,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2021-10-28 22:54:36,449 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 13 [2021-10-28 22:54:36,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:54:36,450 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2021-10-28 22:54:36,450 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) [2021-10-28 22:54:36,450 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2021-10-28 22:54:36,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-28 22:54:36,451 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:54:36,451 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:54:36,497 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5c8b5a9-4153-4e34-8c19-253a515e9075/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-28 22:54:36,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5c8b5a9-4153-4e34-8c19-253a515e9075/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:54:36,665 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 2 more)] === [2021-10-28 22:54:36,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:54:36,666 INFO L85 PathProgramCache]: Analyzing trace with hash -1063444839, now seen corresponding path program 1 times [2021-10-28 22:54:36,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:54:36,666 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247060159] [2021-10-28 22:54:36,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:54:36,667 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:54:36,701 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 22:54:36,702 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2078447796] [2021-10-28 22:54:36,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:54:36,702 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:54:36,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5c8b5a9-4153-4e34-8c19-253a515e9075/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:54:36,722 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5c8b5a9-4153-4e34-8c19-253a515e9075/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 22:54:36,753 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5c8b5a9-4153-4e34-8c19-253a515e9075/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-28 22:54:36,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:54:36,891 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 22:54:36,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:54:36,948 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 22:54:36,948 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 22:54:36,949 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr1REQUIRES_VIOLATION [2021-10-28 22:54:36,951 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION [2021-10-28 22:54:36,952 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2REQUIRES_VIOLATION [2021-10-28 22:54:36,952 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3REQUIRES_VIOLATION [2021-10-28 22:54:36,952 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4REQUIRES_VIOLATION [2021-10-28 22:54:36,953 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr5REQUIRES_VIOLATION [2021-10-28 22:54:36,953 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr6ENSURES_VIOLATIONMEMORY_LEAK [2021-10-28 22:54:37,051 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5c8b5a9-4153-4e34-8c19-253a515e9075/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-28 22:54:37,182 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5c8b5a9-4153-4e34-8c19-253a515e9075/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:54:37,186 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-10-28 22:54:37,190 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 22:54:37,210 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 10:54:37 BoogieIcfgContainer [2021-10-28 22:54:37,210 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 22:54:37,211 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 22:54:37,211 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 22:54:37,211 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 22:54:37,212 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:54:34" (3/4) ... [2021-10-28 22:54:37,215 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-28 22:54:37,263 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5c8b5a9-4153-4e34-8c19-253a515e9075/bin/uautomizer-GMMbpWq8iD/witness.graphml [2021-10-28 22:54:37,263 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 22:54:37,265 INFO L168 Benchmark]: Toolchain (without parser) took 3676.98 ms. Allocated memory is still 132.1 MB. Free memory was 98.7 MB in the beginning and 78.1 MB in the end (delta: 20.6 MB). Peak memory consumption was 22.1 MB. Max. memory is 16.1 GB. [2021-10-28 22:54:37,265 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 90.2 MB. Free memory is still 47.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 22:54:37,266 INFO L168 Benchmark]: CACSL2BoogieTranslator took 489.38 ms. Allocated memory is still 132.1 MB. Free memory was 98.4 MB in the beginning and 103.2 MB in the end (delta: -4.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 22:54:37,267 INFO L168 Benchmark]: Boogie Preprocessor took 68.00 ms. Allocated memory is still 132.1 MB. Free memory was 103.2 MB in the beginning and 100.8 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 22:54:37,268 INFO L168 Benchmark]: RCFGBuilder took 719.51 ms. Allocated memory is still 132.1 MB. Free memory was 100.8 MB in the beginning and 81.9 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2021-10-28 22:54:37,269 INFO L168 Benchmark]: TraceAbstraction took 2326.97 ms. Allocated memory is still 132.1 MB. Free memory was 81.5 MB in the beginning and 80.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 3.9 MB. Max. memory is 16.1 GB. [2021-10-28 22:54:37,269 INFO L168 Benchmark]: Witness Printer took 52.21 ms. Allocated memory is still 132.1 MB. Free memory was 80.2 MB in the beginning and 78.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 22:54:37,273 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 90.2 MB. Free memory is still 47.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 489.38 ms. Allocated memory is still 132.1 MB. Free memory was 98.4 MB in the beginning and 103.2 MB in the end (delta: -4.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 68.00 ms. Allocated memory is still 132.1 MB. Free memory was 103.2 MB in the beginning and 100.8 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 719.51 ms. Allocated memory is still 132.1 MB. Free memory was 100.8 MB in the beginning and 81.9 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2326.97 ms. Allocated memory is still 132.1 MB. Free memory was 81.5 MB in the beginning and 80.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 3.9 MB. Max. memory is 16.1 GB. * Witness Printer took 52.21 ms. Allocated memory is still 132.1 MB. Free memory was 80.2 MB in the beginning and 78.1 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, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s 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