./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/openbsd_cmemchr-alloca-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_ab1fa636-5a54-46ee-a8db-494df9690785/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_ab1fa636-5a54-46ee-a8db-494df9690785/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_ab1fa636-5a54-46ee-a8db-494df9690785/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_ab1fa636-5a54-46ee-a8db-494df9690785/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/openbsd_cmemchr-alloca-2.i -s /tmp/vcloud-vcloud-master/worker/working_dir_ab1fa636-5a54-46ee-a8db-494df9690785/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_ab1fa636-5a54-46ee-a8db-494df9690785/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 8e7a3bf93085b5e270d45bd0dc9d7e17d0c05479 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 0.1.24-cad4683 [2019-10-22 08:56:05,351 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 08:56:05,352 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 08:56:05,362 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 08:56:05,362 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 08:56:05,363 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 08:56:05,364 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 08:56:05,366 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 08:56:05,367 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 08:56:05,368 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 08:56:05,369 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 08:56:05,370 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 08:56:05,370 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 08:56:05,371 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 08:56:05,372 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 08:56:05,372 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 08:56:05,373 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 08:56:05,374 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 08:56:05,375 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 08:56:05,377 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 08:56:05,378 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 08:56:05,379 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 08:56:05,380 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 08:56:05,381 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 08:56:05,383 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 08:56:05,383 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 08:56:05,383 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 08:56:05,384 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 08:56:05,385 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 08:56:05,385 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 08:56:05,386 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 08:56:05,386 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 08:56:05,387 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 08:56:05,388 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 08:56:05,388 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 08:56:05,389 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 08:56:05,389 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 08:56:05,389 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 08:56:05,389 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 08:56:05,390 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 08:56:05,391 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 08:56:05,392 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_ab1fa636-5a54-46ee-a8db-494df9690785/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2019-10-22 08:56:05,402 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 08:56:05,403 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 08:56:05,404 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 08:56:05,404 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 08:56:05,404 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 08:56:05,404 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 08:56:05,404 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 08:56:05,405 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-10-22 08:56:05,405 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 08:56:05,405 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 08:56:05,405 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 08:56:05,405 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-10-22 08:56:05,405 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-10-22 08:56:05,406 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-10-22 08:56:05,406 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 08:56:05,406 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 08:56:05,406 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 08:56:05,407 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 08:56:05,407 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 08:56:05,407 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 08:56:05,407 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 08:56:05,407 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 08:56:05,408 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 08:56:05,408 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 08:56:05,408 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 08:56:05,408 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 08:56:05,408 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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/working_dir_ab1fa636-5a54-46ee-a8db-494df9690785/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 -> 8e7a3bf93085b5e270d45bd0dc9d7e17d0c05479 [2019-10-22 08:56:05,433 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 08:56:05,444 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 08:56:05,447 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 08:56:05,448 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 08:56:05,448 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 08:56:05,449 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_ab1fa636-5a54-46ee-a8db-494df9690785/bin/uautomizer/../../sv-benchmarks/c/array-memsafety/openbsd_cmemchr-alloca-2.i [2019-10-22 08:56:05,499 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_ab1fa636-5a54-46ee-a8db-494df9690785/bin/uautomizer/data/29f07b81a/82973dec574f49c1bf8d9a20707e7139/FLAG6c63729c0 [2019-10-22 08:56:05,919 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 08:56:05,920 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_ab1fa636-5a54-46ee-a8db-494df9690785/sv-benchmarks/c/array-memsafety/openbsd_cmemchr-alloca-2.i [2019-10-22 08:56:05,931 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_ab1fa636-5a54-46ee-a8db-494df9690785/bin/uautomizer/data/29f07b81a/82973dec574f49c1bf8d9a20707e7139/FLAG6c63729c0 [2019-10-22 08:56:05,943 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_ab1fa636-5a54-46ee-a8db-494df9690785/bin/uautomizer/data/29f07b81a/82973dec574f49c1bf8d9a20707e7139 [2019-10-22 08:56:05,945 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 08:56:05,946 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-10-22 08:56:05,947 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 08:56:05,948 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 08:56:05,950 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 08:56:05,951 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:56:05" (1/1) ... [2019-10-22 08:56:05,954 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20dc735c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:05, skipping insertion in model container [2019-10-22 08:56:05,954 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:56:05" (1/1) ... [2019-10-22 08:56:05,961 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 08:56:05,990 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 08:56:06,406 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:56:06,417 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 08:56:06,458 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:56:06,506 INFO L192 MainTranslator]: Completed translation [2019-10-22 08:56:06,508 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:06 WrapperNode [2019-10-22 08:56:06,508 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 08:56:06,509 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 08:56:06,509 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 08:56:06,509 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 08:56:06,518 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:06" (1/1) ... [2019-10-22 08:56:06,519 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:06" (1/1) ... [2019-10-22 08:56:06,529 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:06" (1/1) ... [2019-10-22 08:56:06,529 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:06" (1/1) ... [2019-10-22 08:56:06,540 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:06" (1/1) ... [2019-10-22 08:56:06,544 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:06" (1/1) ... [2019-10-22 08:56:06,546 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:06" (1/1) ... [2019-10-22 08:56:06,551 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 08:56:06,551 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 08:56:06,551 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 08:56:06,551 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 08:56:06,552 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:06" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ab1fa636-5a54-46ee-a8db-494df9690785/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 [2019-10-22 08:56:06,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-22 08:56:06,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 08:56:06,600 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-10-22 08:56:06,601 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-10-22 08:56:06,601 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2019-10-22 08:56:06,601 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2019-10-22 08:56:06,601 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2019-10-22 08:56:06,601 INFO L138 BoogieDeclarations]: Found implementation of procedure cmemchr [2019-10-22 08:56:06,601 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-22 08:56:06,601 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-10-22 08:56:06,601 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-10-22 08:56:06,602 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-10-22 08:56:06,602 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-10-22 08:56:06,602 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-10-22 08:56:06,602 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-10-22 08:56:06,602 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-10-22 08:56:06,602 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-10-22 08:56:06,602 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-10-22 08:56:06,603 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-10-22 08:56:06,603 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-10-22 08:56:06,603 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-10-22 08:56:06,603 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-10-22 08:56:06,603 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-10-22 08:56:06,603 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-10-22 08:56:06,603 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-10-22 08:56:06,603 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-10-22 08:56:06,603 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-10-22 08:56:06,604 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2019-10-22 08:56:06,604 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2019-10-22 08:56:06,604 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2019-10-22 08:56:06,604 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-10-22 08:56:06,604 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-10-22 08:56:06,604 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-10-22 08:56:06,604 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-10-22 08:56:06,604 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-10-22 08:56:06,605 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-10-22 08:56:06,605 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-10-22 08:56:06,605 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-10-22 08:56:06,605 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-10-22 08:56:06,605 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-10-22 08:56:06,605 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-10-22 08:56:06,605 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-10-22 08:56:06,605 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-10-22 08:56:06,605 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-10-22 08:56:06,606 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-10-22 08:56:06,606 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-10-22 08:56:06,606 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-10-22 08:56:06,606 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-10-22 08:56:06,606 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-10-22 08:56:06,606 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-10-22 08:56:06,606 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-10-22 08:56:06,606 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-10-22 08:56:06,606 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-10-22 08:56:06,607 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-10-22 08:56:06,607 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-10-22 08:56:06,607 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-10-22 08:56:06,607 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-10-22 08:56:06,607 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-10-22 08:56:06,607 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-10-22 08:56:06,607 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-10-22 08:56:06,607 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-10-22 08:56:06,607 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-10-22 08:56:06,608 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-10-22 08:56:06,608 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-10-22 08:56:06,608 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-22 08:56:06,608 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-22 08:56:06,608 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-10-22 08:56:06,608 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-22 08:56:06,608 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-10-22 08:56:06,608 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-10-22 08:56:06,608 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-10-22 08:56:06,609 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-10-22 08:56:06,609 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-10-22 08:56:06,609 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-10-22 08:56:06,609 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-10-22 08:56:06,609 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-10-22 08:56:06,609 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-22 08:56:06,609 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-10-22 08:56:06,609 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-10-22 08:56:06,609 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-10-22 08:56:06,610 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-10-22 08:56:06,610 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-10-22 08:56:06,610 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-10-22 08:56:06,610 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-10-22 08:56:06,610 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-10-22 08:56:06,610 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-10-22 08:56:06,610 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-10-22 08:56:06,612 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-10-22 08:56:06,612 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-10-22 08:56:06,612 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-10-22 08:56:06,612 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-10-22 08:56:06,612 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-10-22 08:56:06,612 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-10-22 08:56:06,612 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-10-22 08:56:06,612 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-10-22 08:56:06,612 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-10-22 08:56:06,613 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-10-22 08:56:06,613 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-10-22 08:56:06,613 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-10-22 08:56:06,613 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-10-22 08:56:06,613 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-10-22 08:56:06,613 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-10-22 08:56:06,613 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-10-22 08:56:06,613 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-10-22 08:56:06,613 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-10-22 08:56:06,614 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-10-22 08:56:06,614 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-10-22 08:56:06,614 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-10-22 08:56:06,614 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-10-22 08:56:06,614 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-10-22 08:56:06,614 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-10-22 08:56:06,614 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-10-22 08:56:06,614 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-10-22 08:56:06,615 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-10-22 08:56:06,615 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-10-22 08:56:06,615 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-10-22 08:56:06,615 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-22 08:56:06,615 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-10-22 08:56:06,615 INFO L130 BoogieDeclarations]: Found specification of procedure cmemchr [2019-10-22 08:56:06,615 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-22 08:56:06,615 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-22 08:56:06,616 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 08:56:06,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-22 08:56:06,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-22 08:56:06,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-22 08:56:06,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 08:56:07,040 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 08:56:07,041 INFO L284 CfgBuilder]: Removed 2 assume(true) statements. [2019-10-22 08:56:07,042 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:56:07 BoogieIcfgContainer [2019-10-22 08:56:07,042 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 08:56:07,044 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 08:56:07,044 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 08:56:07,047 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 08:56:07,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 08:56:05" (1/3) ... [2019-10-22 08:56:07,048 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4293bbb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 08:56:07, skipping insertion in model container [2019-10-22 08:56:07,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:06" (2/3) ... [2019-10-22 08:56:07,049 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4293bbb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 08:56:07, skipping insertion in model container [2019-10-22 08:56:07,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:56:07" (3/3) ... [2019-10-22 08:56:07,051 INFO L109 eAbstractionObserver]: Analyzing ICFG openbsd_cmemchr-alloca-2.i [2019-10-22 08:56:07,062 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 08:56:07,070 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2019-10-22 08:56:07,082 INFO L249 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2019-10-22 08:56:07,104 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 08:56:07,105 INFO L374 AbstractCegarLoop]: Hoare is false [2019-10-22 08:56:07,105 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 08:56:07,105 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 08:56:07,106 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 08:56:07,106 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 08:56:07,106 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 08:56:07,106 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 08:56:07,122 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2019-10-22 08:56:07,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-22 08:56:07,133 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:56:07,135 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:56:07,137 INFO L410 AbstractCegarLoop]: === Iteration 1 === [cmemchrErr0REQUIRES_VIOLATION, cmemchrErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION]=== [2019-10-22 08:56:07,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:07,143 INFO L82 PathProgramCache]: Analyzing trace with hash -840380262, now seen corresponding path program 1 times [2019-10-22 08:56:07,153 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:07,153 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149932386] [2019-10-22 08:56:07,154 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:07,154 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:07,154 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:07,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:07,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:07,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:07,392 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149932386] [2019-10-22 08:56:07,393 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:56:07,394 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 08:56:07,395 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668948600] [2019-10-22 08:56:07,400 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 08:56:07,401 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:56:07,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 08:56:07,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-22 08:56:07,419 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 4 states. [2019-10-22 08:56:07,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:56:07,527 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2019-10-22 08:56:07,528 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 08:56:07,530 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-10-22 08:56:07,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:56:07,539 INFO L225 Difference]: With dead ends: 33 [2019-10-22 08:56:07,540 INFO L226 Difference]: Without dead ends: 30 [2019-10-22 08:56:07,542 INFO L600 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 [2019-10-22 08:56:07,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-10-22 08:56:07,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2019-10-22 08:56:07,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-10-22 08:56:07,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2019-10-22 08:56:07,578 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 11 [2019-10-22 08:56:07,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:56:07,579 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2019-10-22 08:56:07,579 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 08:56:07,579 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2019-10-22 08:56:07,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-22 08:56:07,579 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:56:07,580 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:56:07,580 INFO L410 AbstractCegarLoop]: === Iteration 2 === [cmemchrErr0REQUIRES_VIOLATION, cmemchrErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION]=== [2019-10-22 08:56:07,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:07,580 INFO L82 PathProgramCache]: Analyzing trace with hash -840380261, now seen corresponding path program 1 times [2019-10-22 08:56:07,581 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:07,581 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943904274] [2019-10-22 08:56:07,581 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:07,581 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:07,581 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:07,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:07,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:07,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:07,713 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943904274] [2019-10-22 08:56:07,713 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:56:07,713 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 08:56:07,714 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16098783] [2019-10-22 08:56:07,715 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 08:56:07,715 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:56:07,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 08:56:07,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 08:56:07,720 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand 5 states. [2019-10-22 08:56:07,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:56:07,852 INFO L93 Difference]: Finished difference Result 38 states and 44 transitions. [2019-10-22 08:56:07,853 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 08:56:07,853 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2019-10-22 08:56:07,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:56:07,856 INFO L225 Difference]: With dead ends: 38 [2019-10-22 08:56:07,856 INFO L226 Difference]: Without dead ends: 38 [2019-10-22 08:56:07,857 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-10-22 08:56:07,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2019-10-22 08:56:07,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 32. [2019-10-22 08:56:07,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-10-22 08:56:07,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2019-10-22 08:56:07,866 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 38 transitions. Word has length 11 [2019-10-22 08:56:07,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:56:07,867 INFO L462 AbstractCegarLoop]: Abstraction has 32 states and 38 transitions. [2019-10-22 08:56:07,867 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 08:56:07,867 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2019-10-22 08:56:07,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-10-22 08:56:07,867 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:56:07,867 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:56:07,868 INFO L410 AbstractCegarLoop]: === Iteration 3 === [cmemchrErr0REQUIRES_VIOLATION, cmemchrErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION]=== [2019-10-22 08:56:07,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:07,868 INFO L82 PathProgramCache]: Analyzing trace with hash 320732564, now seen corresponding path program 1 times [2019-10-22 08:56:07,868 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:07,868 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20778844] [2019-10-22 08:56:07,869 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:07,869 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:07,869 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:07,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:07,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:07,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:07,977 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20778844] [2019-10-22 08:56:07,977 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:56:07,978 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-22 08:56:07,978 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843549094] [2019-10-22 08:56:07,978 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-22 08:56:07,982 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:56:07,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-22 08:56:07,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-22 08:56:07,983 INFO L87 Difference]: Start difference. First operand 32 states and 38 transitions. Second operand 8 states. [2019-10-22 08:56:08,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:56:08,217 INFO L93 Difference]: Finished difference Result 34 states and 40 transitions. [2019-10-22 08:56:08,218 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-22 08:56:08,219 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2019-10-22 08:56:08,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:56:08,221 INFO L225 Difference]: With dead ends: 34 [2019-10-22 08:56:08,221 INFO L226 Difference]: Without dead ends: 34 [2019-10-22 08:56:08,222 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2019-10-22 08:56:08,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-10-22 08:56:08,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 31. [2019-10-22 08:56:08,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-10-22 08:56:08,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 37 transitions. [2019-10-22 08:56:08,233 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 37 transitions. Word has length 15 [2019-10-22 08:56:08,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:56:08,233 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 37 transitions. [2019-10-22 08:56:08,233 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-22 08:56:08,234 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 37 transitions. [2019-10-22 08:56:08,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-10-22 08:56:08,234 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:56:08,237 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:56:08,237 INFO L410 AbstractCegarLoop]: === Iteration 4 === [cmemchrErr0REQUIRES_VIOLATION, cmemchrErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION]=== [2019-10-22 08:56:08,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:08,238 INFO L82 PathProgramCache]: Analyzing trace with hash 320732565, now seen corresponding path program 1 times [2019-10-22 08:56:08,238 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:08,238 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508838337] [2019-10-22 08:56:08,238 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:08,239 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:08,239 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:08,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:08,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:08,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:08,308 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508838337] [2019-10-22 08:56:08,308 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:56:08,308 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 08:56:08,309 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649748154] [2019-10-22 08:56:08,309 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 08:56:08,309 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:56:08,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 08:56:08,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-22 08:56:08,310 INFO L87 Difference]: Start difference. First operand 31 states and 37 transitions. Second operand 5 states. [2019-10-22 08:56:08,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:56:08,401 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2019-10-22 08:56:08,402 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 08:56:08,402 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2019-10-22 08:56:08,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:56:08,403 INFO L225 Difference]: With dead ends: 33 [2019-10-22 08:56:08,403 INFO L226 Difference]: Without dead ends: 33 [2019-10-22 08:56:08,404 INFO L600 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 [2019-10-22 08:56:08,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2019-10-22 08:56:08,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 31. [2019-10-22 08:56:08,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-10-22 08:56:08,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2019-10-22 08:56:08,408 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 15 [2019-10-22 08:56:08,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:56:08,409 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2019-10-22 08:56:08,409 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 08:56:08,409 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2019-10-22 08:56:08,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-10-22 08:56:08,409 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:56:08,410 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:56:08,410 INFO L410 AbstractCegarLoop]: === Iteration 5 === [cmemchrErr0REQUIRES_VIOLATION, cmemchrErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION]=== [2019-10-22 08:56:08,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:08,411 INFO L82 PathProgramCache]: Analyzing trace with hash 361396958, now seen corresponding path program 1 times [2019-10-22 08:56:08,411 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:08,411 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352885467] [2019-10-22 08:56:08,412 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:08,412 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:08,412 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:08,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:08,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:08,517 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:08,517 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352885467] [2019-10-22 08:56:08,518 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1160978587] [2019-10-22 08:56:08,518 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ab1fa636-5a54-46ee-a8db-494df9690785/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:56:08,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:08,639 INFO L256 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 08:56:08,645 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:56:08,705 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:08,706 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-22 08:56:08,706 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 9 [2019-10-22 08:56:08,706 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766599182] [2019-10-22 08:56:08,708 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 08:56:08,710 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:56:08,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 08:56:08,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2019-10-22 08:56:08,711 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand 5 states. [2019-10-22 08:56:08,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:56:08,734 INFO L93 Difference]: Finished difference Result 42 states and 48 transitions. [2019-10-22 08:56:08,734 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 08:56:08,735 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2019-10-22 08:56:08,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:56:08,735 INFO L225 Difference]: With dead ends: 42 [2019-10-22 08:56:08,736 INFO L226 Difference]: Without dead ends: 42 [2019-10-22 08:56:08,736 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2019-10-22 08:56:08,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2019-10-22 08:56:08,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 38. [2019-10-22 08:56:08,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2019-10-22 08:56:08,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 44 transitions. [2019-10-22 08:56:08,741 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 44 transitions. Word has length 15 [2019-10-22 08:56:08,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:56:08,741 INFO L462 AbstractCegarLoop]: Abstraction has 38 states and 44 transitions. [2019-10-22 08:56:08,741 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 08:56:08,741 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 44 transitions. [2019-10-22 08:56:08,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-10-22 08:56:08,742 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:56:08,742 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:56:08,943 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:56:08,943 INFO L410 AbstractCegarLoop]: === Iteration 6 === [cmemchrErr0REQUIRES_VIOLATION, cmemchrErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION]=== [2019-10-22 08:56:08,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:08,944 INFO L82 PathProgramCache]: Analyzing trace with hash 1041455328, now seen corresponding path program 1 times [2019-10-22 08:56:08,944 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:08,944 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302780938] [2019-10-22 08:56:08,945 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:08,945 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:08,945 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:08,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:56:08,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:56:09,011 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:56:09,012 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-10-22 08:56:09,037 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 08:56:09 BoogieIcfgContainer [2019-10-22 08:56:09,037 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 08:56:09,038 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 08:56:09,038 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 08:56:09,038 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 08:56:09,039 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:56:07" (3/4) ... [2019-10-22 08:56:09,041 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-10-22 08:56:09,089 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_ab1fa636-5a54-46ee-a8db-494df9690785/bin/uautomizer/witness.graphml [2019-10-22 08:56:09,090 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 08:56:09,092 INFO L168 Benchmark]: Toolchain (without parser) took 3144.86 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.2 MB). Free memory was 938.0 MB in the beginning and 910.8 MB in the end (delta: 27.2 MB). Peak memory consumption was 171.4 MB. Max. memory is 11.5 GB. [2019-10-22 08:56:09,093 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:56:09,094 INFO L168 Benchmark]: CACSL2BoogieTranslator took 561.05 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.2 MB). Free memory was 938.0 MB in the beginning and 1.1 GB in the end (delta: -189.9 MB). Peak memory consumption was 18.5 MB. Max. memory is 11.5 GB. [2019-10-22 08:56:09,095 INFO L168 Benchmark]: Boogie Preprocessor took 42.22 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. [2019-10-22 08:56:09,095 INFO L168 Benchmark]: RCFGBuilder took 491.39 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 43.9 MB). Peak memory consumption was 43.9 MB. Max. memory is 11.5 GB. [2019-10-22 08:56:09,096 INFO L168 Benchmark]: TraceAbstraction took 1993.94 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 910.8 MB in the end (delta: 166.5 MB). Peak memory consumption was 166.5 MB. Max. memory is 11.5 GB. [2019-10-22 08:56:09,096 INFO L168 Benchmark]: Witness Printer took 51.96 ms. Allocated memory is still 1.2 GB. Free memory is still 910.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:56:09,099 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 561.05 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.2 MB). Free memory was 938.0 MB in the beginning and 1.1 GB in the end (delta: -189.9 MB). Peak memory consumption was 18.5 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 42.22 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. * RCFGBuilder took 491.39 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 43.9 MB). Peak memory consumption was 43.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1993.94 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 910.8 MB in the end (delta: 166.5 MB). Peak memory consumption was 166.5 MB. Max. memory is 11.5 GB. * Witness Printer took 51.96 ms. Allocated memory is still 1.2 GB. Free memory is still 910.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 539]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L526] int length = __VERIFIER_nondet_int(); [L527] int n = __VERIFIER_nondet_int(); [L528] int c = __VERIFIER_nondet_int(); [L529] COND FALSE !(length < 1) VAL [c=0, length=2, n=1] [L532] COND FALSE !(n < 1) VAL [c=0, length=2, n=1] [L535] char* nondetArea = (char*) __builtin_alloca (n * sizeof(char)); [L537] int i = 0; VAL [__builtin_alloca (n * sizeof(char))={1:0}, c=0, i=0, length=2, n=1, nondetArea={1:0}] [L537] COND TRUE i < length [L539] nondetArea[i] = __VERIFIER_nondet_char() VAL [__builtin_alloca (n * sizeof(char))={1:0}, __VERIFIER_nondet_char()=0, c=0, i=0, length=2, n=1, nondetArea={1:0}] [L537] i++ VAL [__builtin_alloca (n * sizeof(char))={1:0}, c=0, i=1, length=2, n=1, nondetArea={1:0}] [L537] COND TRUE i < length [L539] nondetArea[i] = __VERIFIER_nondet_char() - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 49 locations, 5 error locations. Result: UNSAFE, OverallTime: 1.9s, OverallIterations: 6, TraceHistogramMax: 2, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 140 SDtfs, 161 SDslu, 103 SDs, 0 SdLazy, 284 SolverSat, 30 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 52 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred in iteration=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, 5 MinimizatonAttempts, 15 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 97 NumberOfCodeBlocks, 97 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 76 ConstructedInterpolants, 0 QuantifiedInterpolants, 3402 SizeOfPredicates, 2 NumberOfNonLiveVariables, 72 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 6 InterpolantComputations, 5 PerfectInterpolantSequences, 3/4 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...