./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/add_last_unsafe.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_ddd8399e-ef0e-4c41-946a-5b491809efbf/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_ddd8399e-ef0e-4c41-946a-5b491809efbf/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_ddd8399e-ef0e-4c41-946a-5b491809efbf/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_ddd8399e-ef0e-4c41-946a-5b491809efbf/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/add_last_unsafe.i -s /tmp/vcloud-vcloud-master/worker/run_dir_ddd8399e-ef0e-4c41-946a-5b491809efbf/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_ddd8399e-ef0e-4c41-946a-5b491809efbf/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6dcea98e309b9ccb2c2dc4a4f9353c6c61175172 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref) --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 03:21:41,345 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:21:41,349 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:21:41,408 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:21:41,409 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:21:41,421 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:21:41,423 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:21:41,427 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:21:41,430 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:21:41,438 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:21:41,439 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:21:41,441 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:21:41,441 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:21:41,445 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:21:41,446 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:21:41,448 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:21:41,450 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:21:41,453 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:21:41,456 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:21:41,463 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:21:41,465 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:21:41,466 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:21:41,468 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:21:41,469 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:21:41,473 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:21:41,473 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:21:41,474 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:21:41,475 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:21:41,476 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:21:41,477 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:21:41,477 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:21:41,479 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:21:41,481 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:21:41,482 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:21:41,483 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:21:41,483 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:21:41,484 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:21:41,484 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:21:41,484 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:21:41,485 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:21:41,486 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:21:41,488 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_ddd8399e-ef0e-4c41-946a-5b491809efbf/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-11-28 03:21:41,527 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:21:41,528 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:21:41,529 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:21:41,530 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:21:41,530 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:21:41,530 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:21:41,531 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:21:41,531 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 03:21:41,531 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:21:41,531 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:21:41,532 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:21:41,533 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-28 03:21:41,533 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-28 03:21:41,533 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-28 03:21:41,533 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:21:41,533 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 03:21:41,534 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:21:41,534 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:21:41,534 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:21:41,534 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:21:41,535 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:21:41,535 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:21:41,535 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:21:41,535 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:21:41,536 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:21:41,536 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:21:41,536 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 03:21:41,536 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:21:41,536 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-vcloud-master/worker/run_dir_ddd8399e-ef0e-4c41-946a-5b491809efbf/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_ddd8399e-ef0e-4c41-946a-5b491809efbf/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6dcea98e309b9ccb2c2dc4a4f9353c6c61175172 [2020-11-28 03:21:41,797 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:21:41,833 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:21:41,838 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:21:41,839 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:21:41,840 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:21:41,841 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_ddd8399e-ef0e-4c41-946a-5b491809efbf/bin/uautomizer/../../sv-benchmarks/c/array-memsafety/add_last_unsafe.i [2020-11-28 03:21:41,918 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ddd8399e-ef0e-4c41-946a-5b491809efbf/bin/uautomizer/data/07659855d/ceaef59720cf4879916ba58232b96d99/FLAG20d1483f3 [2020-11-28 03:21:42,479 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:21:42,481 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_ddd8399e-ef0e-4c41-946a-5b491809efbf/sv-benchmarks/c/array-memsafety/add_last_unsafe.i [2020-11-28 03:21:42,502 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ddd8399e-ef0e-4c41-946a-5b491809efbf/bin/uautomizer/data/07659855d/ceaef59720cf4879916ba58232b96d99/FLAG20d1483f3 [2020-11-28 03:21:42,773 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_ddd8399e-ef0e-4c41-946a-5b491809efbf/bin/uautomizer/data/07659855d/ceaef59720cf4879916ba58232b96d99 [2020-11-28 03:21:42,775 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:21:42,777 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-28 03:21:42,778 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:21:42,778 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:21:42,782 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:21:42,782 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:21:42" (1/1) ... [2020-11-28 03:21:42,786 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@139c0510 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:21:42, skipping insertion in model container [2020-11-28 03:21:42,786 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:21:42" (1/1) ... [2020-11-28 03:21:42,793 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:21:42,847 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:21:43,120 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:21:43,127 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:21:43,201 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:21:43,259 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:21:43,261 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:21:43 WrapperNode [2020-11-28 03:21:43,262 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:21:43,263 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:21:43,263 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:21:43,263 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:21:43,277 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:21:43" (1/1) ... [2020-11-28 03:21:43,277 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:21:43" (1/1) ... [2020-11-28 03:21:43,291 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:21:43" (1/1) ... [2020-11-28 03:21:43,291 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:21:43" (1/1) ... [2020-11-28 03:21:43,306 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:21:43" (1/1) ... [2020-11-28 03:21:43,310 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:21:43" (1/1) ... [2020-11-28 03:21:43,314 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:21:43" (1/1) ... [2020-11-28 03:21:43,320 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:21:43,321 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:21:43,321 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:21:43,321 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:21:43,325 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:21:43" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ddd8399e-ef0e-4c41-946a-5b491809efbf/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:21:43,413 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-28 03:21:43,413 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:21:43,414 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-11-28 03:21:43,414 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-11-28 03:21:43,415 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-11-28 03:21:43,415 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-11-28 03:21:43,415 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-11-28 03:21:43,416 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-28 03:21:43,416 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-11-28 03:21:43,416 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-11-28 03:21:43,417 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-11-28 03:21:43,417 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-11-28 03:21:43,417 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-11-28 03:21:43,418 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-11-28 03:21:43,418 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-11-28 03:21:43,418 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-11-28 03:21:43,420 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-11-28 03:21:43,420 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-11-28 03:21:43,420 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-11-28 03:21:43,420 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-11-28 03:21:43,421 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-11-28 03:21:43,421 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-11-28 03:21:43,421 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-11-28 03:21:43,421 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-11-28 03:21:43,421 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-11-28 03:21:43,421 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-11-28 03:21:43,421 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-11-28 03:21:43,421 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-11-28 03:21:43,422 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-11-28 03:21:43,422 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-11-28 03:21:43,422 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-11-28 03:21:43,422 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-11-28 03:21:43,422 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-11-28 03:21:43,422 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-11-28 03:21:43,422 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-11-28 03:21:43,422 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-11-28 03:21:43,423 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-11-28 03:21:43,423 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-11-28 03:21:43,423 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-11-28 03:21:43,423 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-11-28 03:21:43,423 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-11-28 03:21:43,423 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-11-28 03:21:43,423 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-11-28 03:21:43,423 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-11-28 03:21:43,424 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-11-28 03:21:43,424 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-11-28 03:21:43,424 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-11-28 03:21:43,424 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-11-28 03:21:43,424 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-11-28 03:21:43,424 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-11-28 03:21:43,424 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-11-28 03:21:43,425 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-11-28 03:21:43,425 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-11-28 03:21:43,425 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-11-28 03:21:43,425 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-11-28 03:21:43,425 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-11-28 03:21:43,425 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-11-28 03:21:43,426 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-11-28 03:21:43,427 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-11-28 03:21:43,427 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-11-28 03:21:43,427 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-11-28 03:21:43,427 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-11-28 03:21:43,427 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-11-28 03:21:43,427 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-11-28 03:21:43,427 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-11-28 03:21:43,427 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-11-28 03:21:43,428 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-11-28 03:21:43,428 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-11-28 03:21:43,428 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-11-28 03:21:43,428 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-11-28 03:21:43,428 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-11-28 03:21:43,429 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-28 03:21:43,430 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-11-28 03:21:43,430 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-11-28 03:21:43,431 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-11-28 03:21:43,431 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-11-28 03:21:43,431 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-11-28 03:21:43,431 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-11-28 03:21:43,431 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-11-28 03:21:43,431 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-11-28 03:21:43,431 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-11-28 03:21:43,431 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-11-28 03:21:43,432 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-11-28 03:21:43,432 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-11-28 03:21:43,432 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-11-28 03:21:43,433 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-11-28 03:21:43,433 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-11-28 03:21:43,433 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-11-28 03:21:43,433 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-11-28 03:21:43,433 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-11-28 03:21:43,433 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-11-28 03:21:43,433 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-11-28 03:21:43,433 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-11-28 03:21:43,433 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-11-28 03:21:43,434 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-11-28 03:21:43,434 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-11-28 03:21:43,434 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-11-28 03:21:43,434 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-11-28 03:21:43,434 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-11-28 03:21:43,434 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-11-28 03:21:43,434 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-11-28 03:21:43,434 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-11-28 03:21:43,435 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-11-28 03:21:43,435 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-11-28 03:21:43,435 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-11-28 03:21:43,435 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-11-28 03:21:43,435 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-11-28 03:21:43,435 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-11-28 03:21:43,435 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-11-28 03:21:43,436 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-11-28 03:21:43,436 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-11-28 03:21:43,436 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-11-28 03:21:43,436 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-11-28 03:21:43,436 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-11-28 03:21:43,436 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-11-28 03:21:43,436 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-28 03:21:43,437 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-28 03:21:43,437 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:21:43,437 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 03:21:43,437 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 03:21:43,437 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-28 03:21:43,437 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-28 03:21:43,437 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:21:44,061 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:21:44,061 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-11-28 03:21:44,063 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:21:44 BoogieIcfgContainer [2020-11-28 03:21:44,063 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:21:44,065 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:21:44,065 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:21:44,068 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:21:44,069 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:21:42" (1/3) ... [2020-11-28 03:21:44,070 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11214ab4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:21:44, skipping insertion in model container [2020-11-28 03:21:44,073 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:21:43" (2/3) ... [2020-11-28 03:21:44,073 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11214ab4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:21:44, skipping insertion in model container [2020-11-28 03:21:44,074 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:21:44" (3/3) ... [2020-11-28 03:21:44,075 INFO L111 eAbstractionObserver]: Analyzing ICFG add_last_unsafe.i [2020-11-28 03:21:44,090 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:21:44,096 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 13 error locations. [2020-11-28 03:21:44,108 INFO L253 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2020-11-28 03:21:44,136 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:21:44,137 INFO L378 AbstractCegarLoop]: Hoare is false [2020-11-28 03:21:44,137 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:21:44,137 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:21:44,139 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:21:44,145 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:21:44,145 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:21:44,145 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:21:44,161 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2020-11-28 03:21:44,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 03:21:44,171 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:21:44,171 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:21:44,172 INFO L429 AbstractCegarLoop]: === Iteration 1 === [mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr12ENSURES_VIOLATIONMEMORY_LEAK, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-11-28 03:21:44,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:21:44,180 INFO L82 PathProgramCache]: Analyzing trace with hash -2072257551, now seen corresponding path program 1 times [2020-11-28 03:21:44,189 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:21:44,189 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249766105] [2020-11-28 03:21:44,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:21:44,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:44,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:21:44,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:44,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:21:44,435 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249766105] [2020-11-28 03:21:44,436 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:21:44,436 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:21:44,437 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472990662] [2020-11-28 03:21:44,441 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:21:44,441 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:21:44,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:21:44,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:21:44,463 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 4 states. [2020-11-28 03:21:44,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:21:44,660 INFO L93 Difference]: Finished difference Result 38 states and 40 transitions. [2020-11-28 03:21:44,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:21:44,662 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-11-28 03:21:44,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:21:44,671 INFO L225 Difference]: With dead ends: 38 [2020-11-28 03:21:44,671 INFO L226 Difference]: Without dead ends: 35 [2020-11-28 03:21:44,672 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:21:44,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-11-28 03:21:44,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-11-28 03:21:44,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-11-28 03:21:44,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2020-11-28 03:21:44,714 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 10 [2020-11-28 03:21:44,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:21:44,714 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2020-11-28 03:21:44,714 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:21:44,715 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2020-11-28 03:21:44,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 03:21:44,715 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:21:44,716 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:21:44,716 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 03:21:44,716 INFO L429 AbstractCegarLoop]: === Iteration 2 === [mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr12ENSURES_VIOLATIONMEMORY_LEAK, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-11-28 03:21:44,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:21:44,717 INFO L82 PathProgramCache]: Analyzing trace with hash 184525090, now seen corresponding path program 1 times [2020-11-28 03:21:44,717 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:21:44,717 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231709314] [2020-11-28 03:21:44,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:21:44,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:44,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:21:44,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:44,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:21:44,837 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231709314] [2020-11-28 03:21:44,837 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:21:44,837 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 03:21:44,837 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96053959] [2020-11-28 03:21:44,839 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:21:44,839 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:21:44,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:21:44,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:21:44,840 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand 5 states. [2020-11-28 03:21:45,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:21:45,007 INFO L93 Difference]: Finished difference Result 41 states and 43 transitions. [2020-11-28 03:21:45,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 03:21:45,008 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-11-28 03:21:45,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:21:45,009 INFO L225 Difference]: With dead ends: 41 [2020-11-28 03:21:45,009 INFO L226 Difference]: Without dead ends: 41 [2020-11-28 03:21:45,010 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:21:45,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-11-28 03:21:45,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 36. [2020-11-28 03:21:45,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-11-28 03:21:45,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2020-11-28 03:21:45,017 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 11 [2020-11-28 03:21:45,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:21:45,018 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2020-11-28 03:21:45,018 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:21:45,018 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2020-11-28 03:21:45,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 03:21:45,018 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:21:45,018 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:21:45,019 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 03:21:45,019 INFO L429 AbstractCegarLoop]: === Iteration 3 === [mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr12ENSURES_VIOLATIONMEMORY_LEAK, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-11-28 03:21:45,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:21:45,019 INFO L82 PathProgramCache]: Analyzing trace with hash 184525140, now seen corresponding path program 1 times [2020-11-28 03:21:45,020 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:21:45,020 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081179726] [2020-11-28 03:21:45,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:21:45,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:45,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:21:45,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:45,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:21:45,100 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081179726] [2020-11-28 03:21:45,101 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:21:45,101 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:21:45,101 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852068544] [2020-11-28 03:21:45,101 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:21:45,101 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:21:45,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:21:45,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:21:45,102 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. Second operand 4 states. [2020-11-28 03:21:45,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:21:45,188 INFO L93 Difference]: Finished difference Result 33 states and 35 transitions. [2020-11-28 03:21:45,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:21:45,189 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-11-28 03:21:45,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:21:45,190 INFO L225 Difference]: With dead ends: 33 [2020-11-28 03:21:45,190 INFO L226 Difference]: Without dead ends: 33 [2020-11-28 03:21:45,190 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:21:45,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-11-28 03:21:45,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-11-28 03:21:45,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-11-28 03:21:45,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2020-11-28 03:21:45,195 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 11 [2020-11-28 03:21:45,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:21:45,195 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2020-11-28 03:21:45,195 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:21:45,195 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2020-11-28 03:21:45,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 03:21:45,196 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:21:45,196 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:21:45,196 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 03:21:45,196 INFO L429 AbstractCegarLoop]: === Iteration 4 === [mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr12ENSURES_VIOLATIONMEMORY_LEAK, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-11-28 03:21:45,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:21:45,197 INFO L82 PathProgramCache]: Analyzing trace with hash 184525141, now seen corresponding path program 1 times [2020-11-28 03:21:45,197 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:21:45,197 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046790151] [2020-11-28 03:21:45,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:21:45,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:21:45,224 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:21:45,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:21:45,235 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:21:45,255 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:21:45,256 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 03:21:45,256 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 03:21:45,274 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:21:45 BoogieIcfgContainer [2020-11-28 03:21:45,275 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:21:45,275 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:21:45,275 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:21:45,276 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:21:45,276 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:21:44" (3/4) ... [2020-11-28 03:21:45,278 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-28 03:21:45,328 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_ddd8399e-ef0e-4c41-946a-5b491809efbf/bin/uautomizer/witness.graphml [2020-11-28 03:21:45,328 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:21:45,331 INFO L168 Benchmark]: Toolchain (without parser) took 2552.51 ms. Allocated memory was 90.2 MB in the beginning and 109.1 MB in the end (delta: 18.9 MB). Free memory was 59.5 MB in the beginning and 54.7 MB in the end (delta: 4.7 MB). Peak memory consumption was 24.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:21:45,334 INFO L168 Benchmark]: CDTParser took 0.53 ms. Allocated memory is still 90.2 MB. Free memory is still 48.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:21:45,337 INFO L168 Benchmark]: CACSL2BoogieTranslator took 484.19 ms. Allocated memory was 90.2 MB in the beginning and 109.1 MB in the end (delta: 18.9 MB). Free memory was 59.2 MB in the beginning and 74.8 MB in the end (delta: -15.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 03:21:45,338 INFO L168 Benchmark]: Boogie Preprocessor took 56.69 ms. Allocated memory is still 109.1 MB. Free memory was 74.8 MB in the beginning and 72.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:21:45,338 INFO L168 Benchmark]: RCFGBuilder took 742.64 ms. Allocated memory is still 109.1 MB. Free memory was 72.7 MB in the beginning and 79.5 MB in the end (delta: -6.8 MB). Peak memory consumption was 38.4 MB. Max. memory is 16.1 GB. [2020-11-28 03:21:45,339 INFO L168 Benchmark]: TraceAbstraction took 1210.12 ms. Allocated memory is still 109.1 MB. Free memory was 78.8 MB in the beginning and 56.8 MB in the end (delta: 22.0 MB). Peak memory consumption was 21.9 MB. Max. memory is 16.1 GB. [2020-11-28 03:21:45,341 INFO L168 Benchmark]: Witness Printer took 53.12 ms. Allocated memory is still 109.1 MB. Free memory was 56.8 MB in the beginning and 54.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:21:45,344 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.53 ms. Allocated memory is still 90.2 MB. Free memory is still 48.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 484.19 ms. Allocated memory was 90.2 MB in the beginning and 109.1 MB in the end (delta: 18.9 MB). Free memory was 59.2 MB in the beginning and 74.8 MB in the end (delta: -15.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 56.69 ms. Allocated memory is still 109.1 MB. Free memory was 74.8 MB in the beginning and 72.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 742.64 ms. Allocated memory is still 109.1 MB. Free memory was 72.7 MB in the beginning and 79.5 MB in the end (delta: -6.8 MB). Peak memory consumption was 38.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1210.12 ms. Allocated memory is still 109.1 MB. Free memory was 78.8 MB in the beginning and 56.8 MB in the end (delta: 22.0 MB). Peak memory consumption was 21.9 MB. Max. memory is 16.1 GB. * Witness Printer took 53.12 ms. Allocated memory is still 109.1 MB. Free memory was 56.8 MB in the beginning and 54.7 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: - CounterExampleResult [Line: 522]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L513] int i, j; [L514] int length = __VERIFIER_nondet_int(); [L515] COND TRUE length < 1 [L515] length = 1 VAL [length=1] [L516] int *arr = __builtin_alloca (length); VAL [__builtin_alloca (length)={2:0}, arr={2:0}, length=1] [L517] COND FALSE !(!arr) [L518] int *a = arr; [L520] int k = 0; VAL [__builtin_alloca (length)={2:0}, a={2:0}, arr={2:0}, k=0, length=1] [L520] COND TRUE k < length [L522] arr[k] = __VERIFIER_nondet_int() - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 53 locations, 13 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.1s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 72 SDtfs, 97 SDslu, 39 SDs, 0 SdLazy, 151 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 5 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 43 NumberOfCodeBlocks, 43 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 29 ConstructedInterpolants, 0 QuantifiedInterpolants, 789 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...