./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_40a8cddb-d8d8-4959-9242-9401f443e7f0/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40a8cddb-d8d8-4959-9242-9401f443e7f0/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40a8cddb-d8d8-4959-9242-9401f443e7f0/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40a8cddb-d8d8-4959-9242-9401f443e7f0/bin/uautomizer-UnR33cPsHg/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/mult_array_unsafe.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40a8cddb-d8d8-4959-9242-9401f443e7f0/bin/uautomizer-UnR33cPsHg/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40a8cddb-d8d8-4959-9242-9401f443e7f0/bin/uautomizer-UnR33cPsHg --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 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 08:34:51,382 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 08:34:51,384 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 08:34:51,439 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 08:34:51,439 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 08:34:51,441 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 08:34:51,442 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 08:34:51,445 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 08:34:51,447 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 08:34:51,448 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 08:34:51,449 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 08:34:51,451 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 08:34:51,451 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 08:34:51,453 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 08:34:51,454 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 08:34:51,456 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 08:34:51,458 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 08:34:51,459 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 08:34:51,461 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 08:34:51,463 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 08:34:51,465 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 08:34:51,469 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 08:34:51,473 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 08:34:51,474 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 08:34:51,487 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 08:34:51,488 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 08:34:51,488 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 08:34:51,489 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 08:34:51,490 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 08:34:51,491 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 08:34:51,491 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 08:34:51,492 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 08:34:51,493 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 08:34:51,494 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 08:34:51,496 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 08:34:51,496 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 08:34:51,497 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 08:34:51,497 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 08:34:51,498 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 08:34:51,499 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 08:34:51,503 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 08:34:51,504 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40a8cddb-d8d8-4959-9242-9401f443e7f0/bin/uautomizer-UnR33cPsHg/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-10-28 08:34:51,550 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 08:34:51,550 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 08:34:51,551 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 08:34:51,551 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 08:34:51,561 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 08:34:51,561 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 08:34:51,562 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 08:34:51,564 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 08:34:51,564 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 08:34:51,564 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 08:34:51,565 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 08:34:51,566 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 08:34:51,566 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 08:34:51,566 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-28 08:34:51,567 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-28 08:34:51,567 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-28 08:34:51,567 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 08:34:51,568 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-28 08:34:51,568 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 08:34:51,570 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 08:34:51,570 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 08:34:51,571 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 08:34:51,578 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 08:34:51,578 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 08:34:51,578 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 08:34:51,579 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 08:34:51,579 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 08:34:51,579 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 08:34:51,579 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 08:34:51,579 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_40a8cddb-d8d8-4959-9242-9401f443e7f0/bin/uautomizer-UnR33cPsHg/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40a8cddb-d8d8-4959-9242-9401f443e7f0/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d94197bb45011c55db64c4b2cad037cf69a2430f75ef8668b076bdef6ca69182 [2021-10-28 08:34:51,867 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 08:34:51,899 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 08:34:51,902 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 08:34:51,903 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 08:34:51,907 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 08:34:51,909 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40a8cddb-d8d8-4959-9242-9401f443e7f0/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/array-memsafety/mult_array_unsafe.i [2021-10-28 08:34:51,990 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40a8cddb-d8d8-4959-9242-9401f443e7f0/bin/uautomizer-UnR33cPsHg/data/5b3240904/82b5cc889fd842c983b16b281c18838e/FLAG262589b71 [2021-10-28 08:34:52,499 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 08:34:52,501 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40a8cddb-d8d8-4959-9242-9401f443e7f0/sv-benchmarks/c/array-memsafety/mult_array_unsafe.i [2021-10-28 08:34:52,529 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40a8cddb-d8d8-4959-9242-9401f443e7f0/bin/uautomizer-UnR33cPsHg/data/5b3240904/82b5cc889fd842c983b16b281c18838e/FLAG262589b71 [2021-10-28 08:34:52,808 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40a8cddb-d8d8-4959-9242-9401f443e7f0/bin/uautomizer-UnR33cPsHg/data/5b3240904/82b5cc889fd842c983b16b281c18838e [2021-10-28 08:34:52,811 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 08:34:52,812 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-28 08:34:52,814 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 08:34:52,814 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 08:34:52,824 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 08:34:52,825 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:34:52" (1/1) ... [2021-10-28 08:34:52,826 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63649741 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:34:52, skipping insertion in model container [2021-10-28 08:34:52,826 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:34:52" (1/1) ... [2021-10-28 08:34:52,833 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 08:34:52,878 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 08:34:53,163 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 08:34:53,172 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 08:34:53,247 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 08:34:53,285 INFO L208 MainTranslator]: Completed translation [2021-10-28 08:34:53,286 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:34:53 WrapperNode [2021-10-28 08:34:53,286 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 08:34:53,288 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 08:34:53,288 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 08:34:53,288 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 08:34:53,300 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:34:53" (1/1) ... [2021-10-28 08:34:53,302 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:34:53" (1/1) ... [2021-10-28 08:34:53,317 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:34:53" (1/1) ... [2021-10-28 08:34:53,317 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:34:53" (1/1) ... [2021-10-28 08:34:53,331 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:34:53" (1/1) ... [2021-10-28 08:34:53,335 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:34:53" (1/1) ... [2021-10-28 08:34:53,339 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:34:53" (1/1) ... [2021-10-28 08:34:53,345 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 08:34:53,346 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 08:34:53,346 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 08:34:53,346 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 08:34:53,347 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:34:53" (1/1) ... [2021-10-28 08:34:53,361 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 08:34:53,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40a8cddb-d8d8-4959-9242-9401f443e7f0/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:34:53,389 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40a8cddb-d8d8-4959-9242-9401f443e7f0/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 08:34:53,421 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40a8cddb-d8d8-4959-9242-9401f443e7f0/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 08:34:53,442 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-28 08:34:53,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 08:34:53,444 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-10-28 08:34:53,444 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-10-28 08:34:53,444 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-10-28 08:34:53,444 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-10-28 08:34:53,445 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-10-28 08:34:53,446 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-28 08:34:53,446 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-28 08:34:53,446 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-28 08:34:53,446 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-28 08:34:53,447 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-28 08:34:53,447 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-28 08:34:53,448 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-28 08:34:53,448 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-28 08:34:53,448 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-28 08:34:53,448 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-28 08:34:53,448 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-28 08:34:53,448 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-28 08:34:53,449 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-28 08:34:53,449 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-28 08:34:53,449 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-28 08:34:53,449 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-28 08:34:53,449 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-28 08:34:53,450 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-10-28 08:34:53,450 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-10-28 08:34:53,450 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-10-28 08:34:53,450 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-10-28 08:34:53,450 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-10-28 08:34:53,450 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-28 08:34:53,451 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-28 08:34:53,451 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-28 08:34:53,451 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-28 08:34:53,451 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-28 08:34:53,451 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-28 08:34:53,452 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-28 08:34:53,452 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-28 08:34:53,452 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-28 08:34:53,452 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-28 08:34:53,452 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-28 08:34:53,453 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-28 08:34:53,453 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-28 08:34:53,453 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-28 08:34:53,453 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-28 08:34:53,453 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-28 08:34:53,453 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-28 08:34:53,454 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-28 08:34:53,454 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-28 08:34:53,454 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-28 08:34:53,455 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-28 08:34:53,455 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-28 08:34:53,455 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-28 08:34:53,455 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-28 08:34:53,456 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-28 08:34:53,456 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-28 08:34:53,456 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-28 08:34:53,457 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-28 08:34:53,457 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-28 08:34:53,457 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-28 08:34:53,457 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-28 08:34:53,457 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-28 08:34:53,458 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-28 08:34:53,458 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-28 08:34:53,458 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-28 08:34:53,458 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-28 08:34:53,458 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-28 08:34:53,459 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-28 08:34:53,459 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-28 08:34:53,460 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-28 08:34:53,460 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-28 08:34:53,461 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-28 08:34:53,462 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-28 08:34:53,462 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-28 08:34:53,462 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-28 08:34:53,462 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-28 08:34:53,462 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-28 08:34:53,462 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-28 08:34:53,463 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-28 08:34:53,463 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-28 08:34:53,463 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-28 08:34:53,463 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-28 08:34:53,463 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-28 08:34:53,464 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-28 08:34:53,464 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-28 08:34:53,465 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-28 08:34:53,465 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-28 08:34:53,465 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-28 08:34:53,465 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-28 08:34:53,465 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-28 08:34:53,465 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-28 08:34:53,466 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-28 08:34:53,466 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-28 08:34:53,466 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-28 08:34:53,466 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-28 08:34:53,466 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-28 08:34:53,467 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-28 08:34:53,467 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-28 08:34:53,467 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-28 08:34:53,467 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-28 08:34:53,467 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-28 08:34:53,467 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-28 08:34:53,468 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-28 08:34:53,468 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-28 08:34:53,468 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-28 08:34:53,468 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-28 08:34:53,468 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-28 08:34:53,468 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-28 08:34:53,469 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-28 08:34:53,469 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-28 08:34:53,469 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-28 08:34:53,470 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-28 08:34:53,470 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-28 08:34:53,470 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-28 08:34:53,471 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-28 08:34:53,471 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-28 08:34:53,471 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-10-28 08:34:53,471 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-28 08:34:53,472 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 08:34:53,472 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 08:34:53,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-28 08:34:53,472 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-28 08:34:53,472 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-28 08:34:53,472 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 08:34:53,921 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 08:34:53,921 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-10-28 08:34:53,923 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:34:53 BoogieIcfgContainer [2021-10-28 08:34:53,924 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 08:34:53,925 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 08:34:53,926 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 08:34:53,929 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 08:34:53,930 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 08:34:52" (1/3) ... [2021-10-28 08:34:53,931 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f8edf0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 08:34:53, skipping insertion in model container [2021-10-28 08:34:53,931 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:34:53" (2/3) ... [2021-10-28 08:34:53,931 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f8edf0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 08:34:53, skipping insertion in model container [2021-10-28 08:34:53,931 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:34:53" (3/3) ... [2021-10-28 08:34:53,933 INFO L111 eAbstractionObserver]: Analyzing ICFG mult_array_unsafe.i [2021-10-28 08:34:53,938 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 08:34:53,938 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-10-28 08:34:53,985 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 08:34:53,992 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-28 08:34:53,992 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-10-28 08:34:54,007 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 08:34:54,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-28 08:34:54,015 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:34:54,016 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:34:54,016 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 08:34:54,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:34:54,022 INFO L85 PathProgramCache]: Analyzing trace with hash 1489715982, now seen corresponding path program 1 times [2021-10-28 08:34:54,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:34:54,032 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171474923] [2021-10-28 08:34:54,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:34:54,033 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:34:54,131 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 08:34:54,131 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1828456007] [2021-10-28 08:34:54,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:34:54,132 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 08:34:54,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40a8cddb-d8d8-4959-9242-9401f443e7f0/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:34:54,134 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40a8cddb-d8d8-4959-9242-9401f443e7f0/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 08:34:54,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40a8cddb-d8d8-4959-9242-9401f443e7f0/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-28 08:34:54,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:34:54,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-28 08:34:54,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:34:54,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:34:54,478 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:34:54,478 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171474923] [2021-10-28 08:34:54,478 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 08:34:54,479 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1828456007] [2021-10-28 08:34:54,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1828456007] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:34:54,480 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:34:54,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 08:34:54,482 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759030804] [2021-10-28 08:34:54,488 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 08:34:54,488 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:34:54,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 08:34:54,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 08:34:54,505 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 08:34:54,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:34:54,561 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2021-10-28 08:34:54,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 08:34:54,563 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 08:34:54,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:34:54,572 INFO L225 Difference]: With dead ends: 33 [2021-10-28 08:34:54,572 INFO L226 Difference]: Without dead ends: 30 [2021-10-28 08:34:54,574 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 08:34:54,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-10-28 08:34:54,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-10-28 08:34:54,607 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 08:34:54,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2021-10-28 08:34:54,609 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 12 [2021-10-28 08:34:54,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:34:54,610 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2021-10-28 08:34:54,611 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 08:34:54,611 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2021-10-28 08:34:54,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-28 08:34:54,612 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:34:54,612 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:34:54,652 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40a8cddb-d8d8-4959-9242-9401f443e7f0/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-28 08:34:54,825 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40a8cddb-d8d8-4959-9242-9401f443e7f0/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-10-28 08:34:54,826 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 2 more)] === [2021-10-28 08:34:54,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:34:54,826 INFO L85 PathProgramCache]: Analyzing trace with hash -1063444840, now seen corresponding path program 1 times [2021-10-28 08:34:54,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:34:54,827 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92753929] [2021-10-28 08:34:54,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:34:54,827 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:34:54,840 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 08:34:54,840 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [938775413] [2021-10-28 08:34:54,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:34:54,841 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 08:34:54,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40a8cddb-d8d8-4959-9242-9401f443e7f0/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:34:54,842 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40a8cddb-d8d8-4959-9242-9401f443e7f0/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 08:34:54,858 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40a8cddb-d8d8-4959-9242-9401f443e7f0/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-28 08:34:54,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:34:54,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 08:34:54,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:34:55,032 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-10-28 08:34:55,033 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 08:34:55,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:34:55,067 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:34:55,068 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92753929] [2021-10-28 08:34:55,068 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 08:34:55,068 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [938775413] [2021-10-28 08:34:55,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [938775413] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:34:55,069 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:34:55,069 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 08:34:55,069 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550849573] [2021-10-28 08:34:55,070 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 08:34:55,070 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:34:55,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 08:34:55,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 08:34:55,072 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 08:34:55,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:34:55,093 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2021-10-28 08:34:55,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 08:34:55,093 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 08:34:55,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:34:55,094 INFO L225 Difference]: With dead ends: 28 [2021-10-28 08:34:55,095 INFO L226 Difference]: Without dead ends: 28 [2021-10-28 08:34:55,095 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 08:34:55,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-10-28 08:34:55,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-10-28 08:34:55,099 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 08:34:55,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2021-10-28 08:34:55,100 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 13 [2021-10-28 08:34:55,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:34:55,101 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2021-10-28 08:34:55,101 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 08:34:55,101 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2021-10-28 08:34:55,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-28 08:34:55,102 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:34:55,102 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:34:55,147 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40a8cddb-d8d8-4959-9242-9401f443e7f0/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-28 08:34:55,324 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40a8cddb-d8d8-4959-9242-9401f443e7f0/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 08:34:55,324 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 2 more)] === [2021-10-28 08:34:55,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:34:55,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1063444839, now seen corresponding path program 1 times [2021-10-28 08:34:55,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:34:55,325 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135604160] [2021-10-28 08:34:55,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:34:55,325 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:34:55,338 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 08:34:55,338 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [928756337] [2021-10-28 08:34:55,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:34:55,339 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 08:34:55,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40a8cddb-d8d8-4959-9242-9401f443e7f0/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:34:55,343 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40a8cddb-d8d8-4959-9242-9401f443e7f0/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 08:34:55,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40a8cddb-d8d8-4959-9242-9401f443e7f0/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-28 08:34:55,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:34:55,493 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 08:34:55,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:34:55,533 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 08:34:55,534 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 08:34:55,535 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr1REQUIRES_VIOLATION [2021-10-28 08:34:55,537 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION [2021-10-28 08:34:55,537 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2REQUIRES_VIOLATION [2021-10-28 08:34:55,538 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3REQUIRES_VIOLATION [2021-10-28 08:34:55,540 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4REQUIRES_VIOLATION [2021-10-28 08:34:55,540 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr5REQUIRES_VIOLATION [2021-10-28 08:34:55,540 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr6ENSURES_VIOLATIONMEMORY_LEAK [2021-10-28 08:34:55,579 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40a8cddb-d8d8-4959-9242-9401f443e7f0/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-28 08:34:55,753 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40a8cddb-d8d8-4959-9242-9401f443e7f0/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 08:34:55,757 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-10-28 08:34:55,760 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 08:34:55,776 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 08:34:55 BoogieIcfgContainer [2021-10-28 08:34:55,776 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 08:34:55,777 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 08:34:55,777 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 08:34:55,777 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 08:34:55,778 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:34:53" (3/4) ... [2021-10-28 08:34:55,780 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-28 08:34:55,823 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40a8cddb-d8d8-4959-9242-9401f443e7f0/bin/uautomizer-UnR33cPsHg/witness.graphml [2021-10-28 08:34:55,823 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 08:34:55,825 INFO L168 Benchmark]: Toolchain (without parser) took 3011.48 ms. Allocated memory was 98.6 MB in the beginning and 119.5 MB in the end (delta: 21.0 MB). Free memory was 64.5 MB in the beginning and 94.4 MB in the end (delta: -29.9 MB). Peak memory consumption was 35.2 MB. Max. memory is 16.1 GB. [2021-10-28 08:34:55,825 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 98.6 MB. Free memory was 69.9 MB in the beginning and 69.9 MB in the end (delta: 26.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 08:34:55,826 INFO L168 Benchmark]: CACSL2BoogieTranslator took 472.72 ms. Allocated memory is still 98.6 MB. Free memory was 64.3 MB in the beginning and 70.2 MB in the end (delta: -5.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-28 08:34:55,827 INFO L168 Benchmark]: Boogie Preprocessor took 57.25 ms. Allocated memory is still 98.6 MB. Free memory was 70.2 MB in the beginning and 68.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 08:34:55,827 INFO L168 Benchmark]: RCFGBuilder took 578.14 ms. Allocated memory is still 98.6 MB. Free memory was 68.2 MB in the beginning and 49.3 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2021-10-28 08:34:55,828 INFO L168 Benchmark]: TraceAbstraction took 1851.04 ms. Allocated memory is still 98.6 MB. Free memory was 48.8 MB in the beginning and 35.4 MB in the end (delta: 13.4 MB). Peak memory consumption was 14.6 MB. Max. memory is 16.1 GB. [2021-10-28 08:34:55,829 INFO L168 Benchmark]: Witness Printer took 46.44 ms. Allocated memory was 98.6 MB in the beginning and 119.5 MB in the end (delta: 21.0 MB). Free memory was 35.2 MB in the beginning and 94.4 MB in the end (delta: -59.2 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-28 08:34:55,832 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 98.6 MB. Free memory was 69.9 MB in the beginning and 69.9 MB in the end (delta: 26.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 472.72 ms. Allocated memory is still 98.6 MB. Free memory was 64.3 MB in the beginning and 70.2 MB in the end (delta: -5.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 57.25 ms. Allocated memory is still 98.6 MB. Free memory was 70.2 MB in the beginning and 68.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 578.14 ms. Allocated memory is still 98.6 MB. Free memory was 68.2 MB in the beginning and 49.3 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1851.04 ms. Allocated memory is still 98.6 MB. Free memory was 48.8 MB in the beginning and 35.4 MB in the end (delta: 13.4 MB). Peak memory consumption was 14.6 MB. Max. memory is 16.1 GB. * Witness Printer took 46.44 ms. Allocated memory was 98.6 MB in the beginning and 119.5 MB in the end (delta: 21.0 MB). Free memory was 35.2 MB in the beginning and 94.4 MB in the end (delta: -59.2 MB). Peak memory consumption was 6.3 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