./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/reverse_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_216ed92f-c661-4e51-b69e-d64670c85995/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_216ed92f-c661-4e51-b69e-d64670c85995/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_216ed92f-c661-4e51-b69e-d64670c85995/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_216ed92f-c661-4e51-b69e-d64670c85995/bin/uautomizer-GMMbpWq8iD/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/reverse_array_unsafe.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_216ed92f-c661-4e51-b69e-d64670c85995/bin/uautomizer-GMMbpWq8iD/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_216ed92f-c661-4e51-b69e-d64670c85995/bin/uautomizer-GMMbpWq8iD --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash bb17be6c5036a92a96f9e04e4f3a4e1575c4abfe5b11b351c9bb22d6c30d006f ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 23:31:31,280 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 23:31:31,282 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 23:31:31,330 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 23:31:31,331 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 23:31:31,332 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 23:31:31,334 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 23:31:31,336 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 23:31:31,339 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 23:31:31,340 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 23:31:31,341 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 23:31:31,343 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 23:31:31,344 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 23:31:31,345 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 23:31:31,347 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 23:31:31,349 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 23:31:31,350 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 23:31:31,351 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 23:31:31,353 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 23:31:31,356 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 23:31:31,358 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 23:31:31,362 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 23:31:31,364 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 23:31:31,365 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 23:31:31,369 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 23:31:31,370 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 23:31:31,370 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 23:31:31,372 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 23:31:31,372 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 23:31:31,374 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 23:31:31,374 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 23:31:31,376 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 23:31:31,386 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 23:31:31,387 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 23:31:31,388 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 23:31:31,389 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 23:31:31,390 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 23:31:31,390 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 23:31:31,391 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 23:31:31,392 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 23:31:31,393 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 23:31:31,394 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_216ed92f-c661-4e51-b69e-d64670c85995/bin/uautomizer-GMMbpWq8iD/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-10-28 23:31:31,439 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 23:31:31,439 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 23:31:31,440 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 23:31:31,440 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 23:31:31,442 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 23:31:31,442 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 23:31:31,442 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 23:31:31,442 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 23:31:31,442 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 23:31:31,443 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 23:31:31,443 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 23:31:31,443 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 23:31:31,443 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 23:31:31,443 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-28 23:31:31,443 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-28 23:31:31,444 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-28 23:31:31,444 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 23:31:31,444 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-28 23:31:31,444 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 23:31:31,444 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 23:31:31,445 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 23:31:31,445 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 23:31:31,445 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 23:31:31,445 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:31:31,445 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 23:31:31,446 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 23:31:31,446 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 23:31:31,446 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 23:31:31,446 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 23:31:31,446 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_216ed92f-c661-4e51-b69e-d64670c85995/bin/uautomizer-GMMbpWq8iD/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_216ed92f-c661-4e51-b69e-d64670c85995/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bb17be6c5036a92a96f9e04e4f3a4e1575c4abfe5b11b351c9bb22d6c30d006f [2021-10-28 23:31:31,754 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 23:31:31,794 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 23:31:31,797 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 23:31:31,798 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 23:31:31,800 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 23:31:31,801 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_216ed92f-c661-4e51-b69e-d64670c85995/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/array-memsafety/reverse_array_unsafe.i [2021-10-28 23:31:31,876 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_216ed92f-c661-4e51-b69e-d64670c85995/bin/uautomizer-GMMbpWq8iD/data/467568702/561592896c7044299044d1f53b87294a/FLAG97d24b1dd [2021-10-28 23:31:32,551 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 23:31:32,551 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_216ed92f-c661-4e51-b69e-d64670c85995/sv-benchmarks/c/array-memsafety/reverse_array_unsafe.i [2021-10-28 23:31:32,566 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_216ed92f-c661-4e51-b69e-d64670c85995/bin/uautomizer-GMMbpWq8iD/data/467568702/561592896c7044299044d1f53b87294a/FLAG97d24b1dd [2021-10-28 23:31:32,831 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_216ed92f-c661-4e51-b69e-d64670c85995/bin/uautomizer-GMMbpWq8iD/data/467568702/561592896c7044299044d1f53b87294a [2021-10-28 23:31:32,833 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 23:31:32,834 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-28 23:31:32,839 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 23:31:32,839 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 23:31:32,843 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 23:31:32,844 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:31:32" (1/1) ... [2021-10-28 23:31:32,845 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50203431 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:31:32, skipping insertion in model container [2021-10-28 23:31:32,847 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:31:32" (1/1) ... [2021-10-28 23:31:32,854 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 23:31:32,914 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:31:33,232 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:31:33,243 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 23:31:33,286 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:31:33,318 INFO L208 MainTranslator]: Completed translation [2021-10-28 23:31:33,318 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:31:33 WrapperNode [2021-10-28 23:31:33,318 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 23:31:33,319 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 23:31:33,320 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 23:31:33,320 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 23:31:33,332 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:31:33" (1/1) ... [2021-10-28 23:31:33,332 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:31:33" (1/1) ... [2021-10-28 23:31:33,346 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:31:33" (1/1) ... [2021-10-28 23:31:33,346 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:31:33" (1/1) ... [2021-10-28 23:31:33,361 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:31:33" (1/1) ... [2021-10-28 23:31:33,366 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:31:33" (1/1) ... [2021-10-28 23:31:33,369 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:31:33" (1/1) ... [2021-10-28 23:31:33,376 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 23:31:33,377 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 23:31:33,377 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 23:31:33,377 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 23:31:33,378 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:31:33" (1/1) ... [2021-10-28 23:31:33,386 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:31:33,429 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_216ed92f-c661-4e51-b69e-d64670c85995/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:31:33,456 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_216ed92f-c661-4e51-b69e-d64670c85995/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 23:31:33,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_216ed92f-c661-4e51-b69e-d64670c85995/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 23:31:33,506 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-28 23:31:33,506 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 23:31:33,506 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-10-28 23:31:33,507 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-10-28 23:31:33,507 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-10-28 23:31:33,507 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-10-28 23:31:33,507 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-10-28 23:31:33,507 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-28 23:31:33,507 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-28 23:31:33,507 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-28 23:31:33,508 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-28 23:31:33,508 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-28 23:31:33,508 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-28 23:31:33,508 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-28 23:31:33,508 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-28 23:31:33,508 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-28 23:31:33,508 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-28 23:31:33,509 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-28 23:31:33,509 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-28 23:31:33,509 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-28 23:31:33,509 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-28 23:31:33,509 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-28 23:31:33,509 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-28 23:31:33,509 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-28 23:31:33,509 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-10-28 23:31:33,510 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-10-28 23:31:33,510 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-10-28 23:31:33,510 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-10-28 23:31:33,510 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-10-28 23:31:33,510 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-28 23:31:33,510 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-28 23:31:33,510 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-28 23:31:33,510 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-28 23:31:33,511 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-28 23:31:33,511 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-28 23:31:33,511 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-28 23:31:33,511 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-28 23:31:33,511 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-28 23:31:33,511 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-28 23:31:33,511 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-28 23:31:33,512 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-28 23:31:33,512 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-28 23:31:33,512 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-28 23:31:33,512 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-28 23:31:33,512 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-28 23:31:33,512 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-28 23:31:33,512 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-28 23:31:33,513 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-28 23:31:33,513 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-28 23:31:33,513 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-28 23:31:33,513 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-28 23:31:33,513 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-28 23:31:33,513 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-28 23:31:33,513 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-28 23:31:33,514 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-28 23:31:33,514 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-28 23:31:33,514 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-28 23:31:33,514 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-28 23:31:33,514 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-28 23:31:33,514 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-28 23:31:33,514 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-28 23:31:33,515 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-28 23:31:33,515 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-28 23:31:33,515 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-28 23:31:33,515 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-28 23:31:33,515 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-28 23:31:33,515 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-28 23:31:33,515 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-28 23:31:33,516 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-28 23:31:33,516 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-28 23:31:33,516 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-28 23:31:33,516 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-28 23:31:33,516 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-28 23:31:33,516 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-28 23:31:33,516 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-28 23:31:33,516 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-28 23:31:33,517 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-28 23:31:33,517 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-28 23:31:33,517 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-28 23:31:33,517 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-28 23:31:33,517 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-28 23:31:33,517 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-28 23:31:33,517 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-28 23:31:33,518 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-28 23:31:33,518 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-28 23:31:33,518 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-28 23:31:33,518 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-28 23:31:33,518 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-28 23:31:33,518 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-28 23:31:33,518 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-28 23:31:33,518 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-28 23:31:33,519 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-28 23:31:33,519 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-28 23:31:33,519 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-28 23:31:33,519 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-28 23:31:33,519 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-28 23:31:33,519 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-28 23:31:33,519 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-28 23:31:33,519 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-28 23:31:33,520 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-28 23:31:33,520 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-28 23:31:33,520 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-28 23:31:33,520 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-28 23:31:33,520 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-28 23:31:33,520 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-28 23:31:33,520 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-28 23:31:33,521 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-28 23:31:33,521 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-28 23:31:33,521 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-28 23:31:33,521 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-28 23:31:33,521 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-28 23:31:33,521 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-28 23:31:33,521 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-28 23:31:33,522 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-28 23:31:33,522 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-28 23:31:33,522 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-10-28 23:31:33,522 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2021-10-28 23:31:33,522 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-28 23:31:33,522 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 23:31:33,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-28 23:31:33,523 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-28 23:31:33,523 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 23:31:33,523 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-28 23:31:33,523 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 23:31:34,057 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 23:31:34,058 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-10-28 23:31:34,060 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:31:34 BoogieIcfgContainer [2021-10-28 23:31:34,060 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 23:31:34,062 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 23:31:34,063 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 23:31:34,066 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 23:31:34,067 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 11:31:32" (1/3) ... [2021-10-28 23:31:34,068 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a95e0e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:31:34, skipping insertion in model container [2021-10-28 23:31:34,068 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:31:33" (2/3) ... [2021-10-28 23:31:34,068 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a95e0e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:31:34, skipping insertion in model container [2021-10-28 23:31:34,069 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:31:34" (3/3) ... [2021-10-28 23:31:34,070 INFO L111 eAbstractionObserver]: Analyzing ICFG reverse_array_unsafe.i [2021-10-28 23:31:34,076 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 23:31:34,076 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 23 error locations. [2021-10-28 23:31:34,123 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 23:31:34,129 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 23:31:34,129 INFO L340 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2021-10-28 23:31:34,151 INFO L276 IsEmpty]: Start isEmpty. Operand has 65 states, 37 states have (on average 1.8918918918918919) internal successors, (70), 60 states have internal predecessors, (70), 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 23:31:34,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-28 23:31:34,160 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:31:34,160 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:31:34,161 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 18 more)] === [2021-10-28 23:31:34,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:31:34,172 INFO L85 PathProgramCache]: Analyzing trace with hash -1096953401, now seen corresponding path program 1 times [2021-10-28 23:31:34,190 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:31:34,191 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633487846] [2021-10-28 23:31:34,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:31:34,193 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:31:34,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:31:34,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:31:34,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:31:34,578 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 23:31:34,579 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:31:34,579 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633487846] [2021-10-28 23:31:34,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633487846] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:31:34,580 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:31:34,581 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:31:34,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563394275] [2021-10-28 23:31:34,588 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:31:34,588 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:31:34,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:31:34,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:31:34,606 INFO L87 Difference]: Start difference. First operand has 65 states, 37 states have (on average 1.8918918918918919) internal successors, (70), 60 states have internal predecessors, (70), 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 2.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:31:34,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:31:34,795 INFO L93 Difference]: Finished difference Result 66 states and 72 transitions. [2021-10-28 23:31:34,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 23:31:34,797 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-10-28 23:31:34,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:31:34,806 INFO L225 Difference]: With dead ends: 66 [2021-10-28 23:31:34,806 INFO L226 Difference]: Without dead ends: 63 [2021-10-28 23:31:34,817 INFO L786 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 [2021-10-28 23:31:34,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-10-28 23:31:34,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2021-10-28 23:31:34,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 37 states have (on average 1.7837837837837838) internal successors, (66), 59 states have internal predecessors, (66), 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 23:31:34,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 69 transitions. [2021-10-28 23:31:34,860 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 69 transitions. Word has length 11 [2021-10-28 23:31:34,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:31:34,860 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 69 transitions. [2021-10-28 23:31:34,861 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:31:34,861 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 69 transitions. [2021-10-28 23:31:34,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-28 23:31:34,862 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:31:34,862 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:31:34,863 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 23:31:34,863 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 18 more)] === [2021-10-28 23:31:34,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:31:34,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1096893819, now seen corresponding path program 1 times [2021-10-28 23:31:34,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:31:34,864 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444399334] [2021-10-28 23:31:34,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:31:34,865 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:31:34,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:31:34,910 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:31:34,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:31:34,974 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:31:34,975 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 23:31:34,976 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr1REQUIRES_VIOLATION [2021-10-28 23:31:34,978 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION [2021-10-28 23:31:34,979 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2REQUIRES_VIOLATION [2021-10-28 23:31:34,979 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3REQUIRES_VIOLATION [2021-10-28 23:31:34,979 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4REQUIRES_VIOLATION [2021-10-28 23:31:34,979 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr5REQUIRES_VIOLATION [2021-10-28 23:31:34,979 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr6REQUIRES_VIOLATION [2021-10-28 23:31:34,980 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr7REQUIRES_VIOLATION [2021-10-28 23:31:34,980 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr8REQUIRES_VIOLATION [2021-10-28 23:31:34,981 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr9REQUIRES_VIOLATION [2021-10-28 23:31:34,982 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr10REQUIRES_VIOLATION [2021-10-28 23:31:34,982 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr11REQUIRES_VIOLATION [2021-10-28 23:31:34,982 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr12REQUIRES_VIOLATION [2021-10-28 23:31:34,982 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr13REQUIRES_VIOLATION [2021-10-28 23:31:34,983 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr14REQUIRES_VIOLATION [2021-10-28 23:31:34,983 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr15REQUIRES_VIOLATION [2021-10-28 23:31:34,983 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr16REQUIRES_VIOLATION [2021-10-28 23:31:34,983 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr17REQUIRES_VIOLATION [2021-10-28 23:31:34,983 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr18REQUIRES_VIOLATION [2021-10-28 23:31:34,984 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr19REQUIRES_VIOLATION [2021-10-28 23:31:34,985 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr20REQUIRES_VIOLATION [2021-10-28 23:31:34,985 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr21REQUIRES_VIOLATION [2021-10-28 23:31:34,985 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr22ENSURES_VIOLATIONMEMORY_LEAK [2021-10-28 23:31:34,986 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 23:31:34,989 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1] [2021-10-28 23:31:34,992 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 23:31:35,010 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 11:31:35 BoogieIcfgContainer [2021-10-28 23:31:35,011 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 23:31:35,012 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 23:31:35,012 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 23:31:35,012 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 23:31:35,013 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:31:34" (3/4) ... [2021-10-28 23:31:35,014 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-28 23:31:35,067 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_216ed92f-c661-4e51-b69e-d64670c85995/bin/uautomizer-GMMbpWq8iD/witness.graphml [2021-10-28 23:31:35,067 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 23:31:35,069 INFO L168 Benchmark]: Toolchain (without parser) took 2233.34 ms. Allocated memory was 94.4 MB in the beginning and 138.4 MB in the end (delta: 44.0 MB). Free memory was 63.3 MB in the beginning and 100.6 MB in the end (delta: -37.3 MB). Peak memory consumption was 7.7 MB. Max. memory is 16.1 GB. [2021-10-28 23:31:35,069 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 94.4 MB. Free memory was 64.0 MB in the beginning and 63.9 MB in the end (delta: 52.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:31:35,070 INFO L168 Benchmark]: CACSL2BoogieTranslator took 480.15 ms. Allocated memory is still 94.4 MB. Free memory was 63.0 MB in the beginning and 47.7 MB in the end (delta: 15.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-28 23:31:35,071 INFO L168 Benchmark]: Boogie Preprocessor took 56.52 ms. Allocated memory is still 94.4 MB. Free memory was 47.7 MB in the beginning and 45.4 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:31:35,072 INFO L168 Benchmark]: RCFGBuilder took 683.95 ms. Allocated memory was 94.4 MB in the beginning and 138.4 MB in the end (delta: 44.0 MB). Free memory was 45.3 MB in the beginning and 96.9 MB in the end (delta: -51.6 MB). Peak memory consumption was 9.8 MB. Max. memory is 16.1 GB. [2021-10-28 23:31:35,072 INFO L168 Benchmark]: TraceAbstraction took 948.33 ms. Allocated memory is still 138.4 MB. Free memory was 96.3 MB in the beginning and 102.7 MB in the end (delta: -6.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:31:35,072 INFO L168 Benchmark]: Witness Printer took 55.60 ms. Allocated memory is still 138.4 MB. Free memory was 102.7 MB in the beginning and 100.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:31:35,079 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 94.4 MB. Free memory was 64.0 MB in the beginning and 63.9 MB in the end (delta: 52.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 480.15 ms. Allocated memory is still 94.4 MB. Free memory was 63.0 MB in the beginning and 47.7 MB in the end (delta: 15.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 56.52 ms. Allocated memory is still 94.4 MB. Free memory was 47.7 MB in the beginning and 45.4 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 683.95 ms. Allocated memory was 94.4 MB in the beginning and 138.4 MB in the end (delta: 44.0 MB). Free memory was 45.3 MB in the beginning and 96.9 MB in the end (delta: -51.6 MB). Peak memory consumption was 9.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 948.33 ms. Allocated memory is still 138.4 MB. Free memory was 96.3 MB in the beginning and 102.7 MB in the end (delta: -6.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 55.60 ms. Allocated memory is still 138.4 MB. Free memory was 102.7 MB in the beginning and 100.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s 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: [L515] int i, j, tmp; [L516] int length = __VERIFIER_nondet_int(); [L517] COND TRUE length < 1 [L517] length = 1 VAL [length=1] [L518] COND FALSE !(length % 2 == 0) VAL [length=1] [L519] int *arr = __builtin_alloca (length); [L520] int i = 0; VAL [__builtin_alloca (length)={2:0}, arr={2:0}, i=0, length=1] [L520] COND TRUE i < length [L522] arr[i] = __VERIFIER_nondet_int() - UnprovableResult [Line: 522]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 525]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 525]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 525]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 525]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 525]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 525]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 527]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 527]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 530]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 530]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 530]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 530]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 531]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 531]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 532]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 532]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 532]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 532]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 533]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 533]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 514]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 80 locations, 23 error locations. Started 1 CEGAR loops. OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 61 SDtfs, 65 SDslu, 9 SDs, 0 SdLazy, 73 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=65occurred in iteration=0, InterpolantAutomatonStates: 5, 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 26 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-10-28 23:31:35,132 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_216ed92f-c661-4e51-b69e-d64670c85995/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...