./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/add_last_unsafe.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_2a373061-3d19-405e-a6aa-2a75f66b7826/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_2a373061-3d19-405e-a6aa-2a75f66b7826/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_2a373061-3d19-405e-a6aa-2a75f66b7826/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_2a373061-3d19-405e-a6aa-2a75f66b7826/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/add_last_unsafe.i -s /tmp/vcloud-vcloud-master/worker/working_dir_2a373061-3d19-405e-a6aa-2a75f66b7826/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_2a373061-3d19-405e-a6aa-2a75f66b7826/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6dcea98e309b9ccb2c2dc4a4f9353c6c61175172 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref) --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-10-22 08:59:27,292 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 08:59:27,293 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 08:59:27,303 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 08:59:27,303 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 08:59:27,304 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 08:59:27,305 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 08:59:27,306 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 08:59:27,307 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 08:59:27,308 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 08:59:27,308 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 08:59:27,309 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 08:59:27,309 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 08:59:27,310 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 08:59:27,311 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 08:59:27,312 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 08:59:27,313 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 08:59:27,313 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 08:59:27,315 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 08:59:27,317 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 08:59:27,318 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 08:59:27,319 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 08:59:27,320 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 08:59:27,321 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 08:59:27,323 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 08:59:27,323 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 08:59:27,324 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 08:59:27,324 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 08:59:27,325 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 08:59:27,326 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 08:59:27,326 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 08:59:27,327 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 08:59:27,328 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 08:59:27,328 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 08:59:27,329 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 08:59:27,330 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 08:59:27,330 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 08:59:27,330 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 08:59:27,331 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 08:59:27,332 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 08:59:27,332 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 08:59:27,333 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_2a373061-3d19-405e-a6aa-2a75f66b7826/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2019-10-22 08:59:27,345 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 08:59:27,345 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 08:59:27,346 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 08:59:27,346 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 08:59:27,347 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 08:59:27,347 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 08:59:27,347 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 08:59:27,347 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-10-22 08:59:27,347 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 08:59:27,348 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 08:59:27,348 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 08:59:27,348 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-10-22 08:59:27,348 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-10-22 08:59:27,348 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-10-22 08:59:27,348 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 08:59:27,349 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 08:59:27,349 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 08:59:27,349 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 08:59:27,349 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 08:59:27,349 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 08:59:27,349 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 08:59:27,350 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 08:59:27,350 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 08:59:27,350 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 08:59:27,350 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 08:59:27,350 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 08:59:27,350 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_2a373061-3d19-405e-a6aa-2a75f66b7826/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6dcea98e309b9ccb2c2dc4a4f9353c6c61175172 [2019-10-22 08:59:27,388 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 08:59:27,403 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 08:59:27,406 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 08:59:27,408 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 08:59:27,408 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 08:59:27,409 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_2a373061-3d19-405e-a6aa-2a75f66b7826/bin/uautomizer/../../sv-benchmarks/c/array-memsafety/add_last_unsafe.i [2019-10-22 08:59:27,463 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_2a373061-3d19-405e-a6aa-2a75f66b7826/bin/uautomizer/data/d5c4513b2/a6e7799f6daa4f4eb71671fe7c27060a/FLAG213b29cde [2019-10-22 08:59:27,893 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 08:59:27,894 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_2a373061-3d19-405e-a6aa-2a75f66b7826/sv-benchmarks/c/array-memsafety/add_last_unsafe.i [2019-10-22 08:59:27,903 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_2a373061-3d19-405e-a6aa-2a75f66b7826/bin/uautomizer/data/d5c4513b2/a6e7799f6daa4f4eb71671fe7c27060a/FLAG213b29cde [2019-10-22 08:59:27,915 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_2a373061-3d19-405e-a6aa-2a75f66b7826/bin/uautomizer/data/d5c4513b2/a6e7799f6daa4f4eb71671fe7c27060a [2019-10-22 08:59:27,918 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 08:59:27,919 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-10-22 08:59:27,920 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 08:59:27,920 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 08:59:27,923 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 08:59:27,924 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:59:27" (1/1) ... [2019-10-22 08:59:27,926 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e039884 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:59:27, skipping insertion in model container [2019-10-22 08:59:27,926 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:59:27" (1/1) ... [2019-10-22 08:59:27,933 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 08:59:27,961 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 08:59:28,364 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:59:28,384 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 08:59:28,445 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:59:28,498 INFO L192 MainTranslator]: Completed translation [2019-10-22 08:59:28,498 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:59:28 WrapperNode [2019-10-22 08:59:28,498 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 08:59:28,499 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 08:59:28,499 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 08:59:28,499 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 08:59:28,514 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:59:28" (1/1) ... [2019-10-22 08:59:28,514 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:59:28" (1/1) ... [2019-10-22 08:59:28,535 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:59:28" (1/1) ... [2019-10-22 08:59:28,536 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:59:28" (1/1) ... [2019-10-22 08:59:28,556 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:59:28" (1/1) ... [2019-10-22 08:59:28,561 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:59:28" (1/1) ... [2019-10-22 08:59:28,564 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:59:28" (1/1) ... [2019-10-22 08:59:28,568 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 08:59:28,569 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 08:59:28,569 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 08:59:28,569 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 08:59:28,570 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:59:28" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2a373061-3d19-405e-a6aa-2a75f66b7826/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 08:59:28,643 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-22 08:59:28,644 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 08:59:28,644 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-10-22 08:59:28,644 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-10-22 08:59:28,644 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2019-10-22 08:59:28,644 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2019-10-22 08:59:28,645 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2019-10-22 08:59:28,645 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-22 08:59:28,645 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-10-22 08:59:28,645 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-10-22 08:59:28,645 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-10-22 08:59:28,646 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-10-22 08:59:28,646 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-10-22 08:59:28,646 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-10-22 08:59:28,646 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-10-22 08:59:28,646 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-10-22 08:59:28,646 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-10-22 08:59:28,647 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-10-22 08:59:28,647 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-10-22 08:59:28,647 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-10-22 08:59:28,647 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-10-22 08:59:28,647 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-10-22 08:59:28,648 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-10-22 08:59:28,648 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-10-22 08:59:28,649 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-10-22 08:59:28,649 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-10-22 08:59:28,650 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2019-10-22 08:59:28,650 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2019-10-22 08:59:28,650 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2019-10-22 08:59:28,650 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-10-22 08:59:28,650 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-10-22 08:59:28,650 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-10-22 08:59:28,651 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-10-22 08:59:28,651 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-10-22 08:59:28,651 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-10-22 08:59:28,651 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-10-22 08:59:28,651 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-10-22 08:59:28,651 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-10-22 08:59:28,651 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-10-22 08:59:28,652 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-10-22 08:59:28,652 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-10-22 08:59:28,652 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-10-22 08:59:28,652 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-10-22 08:59:28,652 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-10-22 08:59:28,652 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-10-22 08:59:28,652 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-10-22 08:59:28,653 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-10-22 08:59:28,653 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-10-22 08:59:28,653 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-10-22 08:59:28,653 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-10-22 08:59:28,653 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-10-22 08:59:28,653 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-10-22 08:59:28,653 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-10-22 08:59:28,654 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-10-22 08:59:28,654 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-10-22 08:59:28,654 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-10-22 08:59:28,654 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-10-22 08:59:28,654 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-10-22 08:59:28,654 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-10-22 08:59:28,654 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-10-22 08:59:28,655 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-10-22 08:59:28,655 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-10-22 08:59:28,658 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-10-22 08:59:28,658 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-22 08:59:28,659 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-22 08:59:28,659 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-10-22 08:59:28,659 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-22 08:59:28,659 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-10-22 08:59:28,659 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-10-22 08:59:28,659 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-10-22 08:59:28,659 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-10-22 08:59:28,660 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-10-22 08:59:28,660 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-10-22 08:59:28,660 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-10-22 08:59:28,660 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-10-22 08:59:28,660 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-22 08:59:28,660 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-10-22 08:59:28,660 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-10-22 08:59:28,661 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-10-22 08:59:28,661 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-10-22 08:59:28,661 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-10-22 08:59:28,661 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-10-22 08:59:28,661 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-10-22 08:59:28,661 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-10-22 08:59:28,661 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-10-22 08:59:28,661 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-10-22 08:59:28,662 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-10-22 08:59:28,662 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-10-22 08:59:28,662 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-10-22 08:59:28,662 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-10-22 08:59:28,662 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-10-22 08:59:28,662 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-10-22 08:59:28,662 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-10-22 08:59:28,663 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-10-22 08:59:28,663 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-10-22 08:59:28,667 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-10-22 08:59:28,667 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-10-22 08:59:28,667 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-10-22 08:59:28,667 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-10-22 08:59:28,668 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-10-22 08:59:28,668 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-10-22 08:59:28,668 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-10-22 08:59:28,668 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-10-22 08:59:28,668 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-10-22 08:59:28,668 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-10-22 08:59:28,668 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-10-22 08:59:28,668 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-10-22 08:59:28,669 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-10-22 08:59:28,669 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-10-22 08:59:28,669 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-10-22 08:59:28,669 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-10-22 08:59:28,669 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-10-22 08:59:28,669 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-10-22 08:59:28,669 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-10-22 08:59:28,669 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-10-22 08:59:28,670 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-22 08:59:28,670 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-22 08:59:28,671 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 08:59:28,671 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-22 08:59:28,671 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-22 08:59:28,671 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-22 08:59:28,671 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-22 08:59:28,672 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 08:59:29,162 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 08:59:29,162 INFO L284 CfgBuilder]: Removed 2 assume(true) statements. [2019-10-22 08:59:29,163 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:59:29 BoogieIcfgContainer [2019-10-22 08:59:29,164 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 08:59:29,165 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 08:59:29,165 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 08:59:29,167 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 08:59:29,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 08:59:27" (1/3) ... [2019-10-22 08:59:29,168 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17cf1591 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 08:59:29, skipping insertion in model container [2019-10-22 08:59:29,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:59:28" (2/3) ... [2019-10-22 08:59:29,169 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17cf1591 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 08:59:29, skipping insertion in model container [2019-10-22 08:59:29,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:59:29" (3/3) ... [2019-10-22 08:59:29,170 INFO L109 eAbstractionObserver]: Analyzing ICFG add_last_unsafe.i [2019-10-22 08:59:29,179 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 08:59:29,186 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 13 error locations. [2019-10-22 08:59:29,196 INFO L249 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2019-10-22 08:59:29,213 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 08:59:29,213 INFO L374 AbstractCegarLoop]: Hoare is false [2019-10-22 08:59:29,213 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 08:59:29,214 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 08:59:29,214 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 08:59:29,214 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 08:59:29,214 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 08:59:29,214 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 08:59:29,227 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2019-10-22 08:59:29,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-22 08:59:29,236 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:59:29,237 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:59:29,238 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr1REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr12ENSURES_VIOLATIONMEMORY_LEAK, mainErr5REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION]=== [2019-10-22 08:59:29,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:59:29,244 INFO L82 PathProgramCache]: Analyzing trace with hash -2072257551, now seen corresponding path program 1 times [2019-10-22 08:59:29,251 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:59:29,252 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775879243] [2019-10-22 08:59:29,252 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:59:29,252 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:59:29,252 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:59:29,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:59:29,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:59:29,398 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 08:59:29,398 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775879243] [2019-10-22 08:59:29,399 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:59:29,399 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 08:59:29,400 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278783166] [2019-10-22 08:59:29,404 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 08:59:29,404 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:59:29,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 08:59:29,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-22 08:59:29,416 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 4 states. [2019-10-22 08:59:29,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:59:29,520 INFO L93 Difference]: Finished difference Result 38 states and 40 transitions. [2019-10-22 08:59:29,521 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 08:59:29,522 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-10-22 08:59:29,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:59:29,530 INFO L225 Difference]: With dead ends: 38 [2019-10-22 08:59:29,531 INFO L226 Difference]: Without dead ends: 35 [2019-10-22 08:59:29,532 INFO L600 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 [2019-10-22 08:59:29,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-10-22 08:59:29,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2019-10-22 08:59:29,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2019-10-22 08:59:29,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2019-10-22 08:59:29,565 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 10 [2019-10-22 08:59:29,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:59:29,565 INFO L462 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2019-10-22 08:59:29,565 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 08:59:29,565 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2019-10-22 08:59:29,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-22 08:59:29,566 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:59:29,566 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:59:29,566 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr1REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr12ENSURES_VIOLATIONMEMORY_LEAK, mainErr5REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION]=== [2019-10-22 08:59:29,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:59:29,567 INFO L82 PathProgramCache]: Analyzing trace with hash 184525090, now seen corresponding path program 1 times [2019-10-22 08:59:29,567 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:59:29,567 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193784620] [2019-10-22 08:59:29,567 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:59:29,568 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:59:29,568 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:59:29,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:59:29,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:59:29,634 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 08:59:29,635 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193784620] [2019-10-22 08:59:29,640 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:59:29,640 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 08:59:29,641 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229919675] [2019-10-22 08:59:29,642 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 08:59:29,642 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:59:29,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 08:59:29,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 08:59:29,643 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand 5 states. [2019-10-22 08:59:29,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:59:29,748 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2019-10-22 08:59:29,749 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 08:59:29,749 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2019-10-22 08:59:29,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:59:29,750 INFO L225 Difference]: With dead ends: 29 [2019-10-22 08:59:29,750 INFO L226 Difference]: Without dead ends: 29 [2019-10-22 08:59:29,750 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-22 08:59:29,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-10-22 08:59:29,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-10-22 08:59:29,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-10-22 08:59:29,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2019-10-22 08:59:29,754 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 11 [2019-10-22 08:59:29,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:59:29,754 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2019-10-22 08:59:29,754 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 08:59:29,754 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2019-10-22 08:59:29,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-22 08:59:29,755 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:59:29,755 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:59:29,757 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr1REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr12ENSURES_VIOLATIONMEMORY_LEAK, mainErr5REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION]=== [2019-10-22 08:59:29,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:59:29,757 INFO L82 PathProgramCache]: Analyzing trace with hash 184525091, now seen corresponding path program 1 times [2019-10-22 08:59:29,758 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:59:29,758 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894437625] [2019-10-22 08:59:29,758 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:59:29,758 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:59:29,758 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:59:29,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:59:29,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:59:29,843 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 08:59:29,847 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894437625] [2019-10-22 08:59:29,847 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:59:29,847 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 08:59:29,847 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763488957] [2019-10-22 08:59:29,848 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 08:59:29,848 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:59:29,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 08:59:29,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-22 08:59:29,849 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand 5 states. [2019-10-22 08:59:29,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:59:29,916 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2019-10-22 08:59:29,917 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 08:59:29,917 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2019-10-22 08:59:29,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:59:29,917 INFO L225 Difference]: With dead ends: 34 [2019-10-22 08:59:29,917 INFO L226 Difference]: Without dead ends: 34 [2019-10-22 08:59:29,918 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 08:59:29,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-10-22 08:59:29,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 30. [2019-10-22 08:59:29,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-10-22 08:59:29,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2019-10-22 08:59:29,922 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 11 [2019-10-22 08:59:29,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:59:29,922 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2019-10-22 08:59:29,922 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 08:59:29,922 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2019-10-22 08:59:29,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-22 08:59:29,923 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:59:29,923 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:59:29,923 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr1REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr12ENSURES_VIOLATIONMEMORY_LEAK, mainErr5REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION]=== [2019-10-22 08:59:29,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:59:29,923 INFO L82 PathProgramCache]: Analyzing trace with hash 184525141, now seen corresponding path program 1 times [2019-10-22 08:59:29,924 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:59:29,924 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127818851] [2019-10-22 08:59:29,924 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:59:29,924 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:59:29,924 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:59:29,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:59:29,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:59:29,975 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:59:29,975 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-10-22 08:59:29,991 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 08:59:29 BoogieIcfgContainer [2019-10-22 08:59:29,991 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 08:59:29,991 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 08:59:29,991 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 08:59:29,991 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 08:59:29,992 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:59:29" (3/4) ... [2019-10-22 08:59:29,994 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-10-22 08:59:30,032 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_2a373061-3d19-405e-a6aa-2a75f66b7826/bin/uautomizer/witness.graphml [2019-10-22 08:59:30,033 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 08:59:30,034 INFO L168 Benchmark]: Toolchain (without parser) took 2114.97 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.6 MB). Free memory was 939.1 MB in the beginning and 996.9 MB in the end (delta: -57.8 MB). Peak memory consumption was 84.8 MB. Max. memory is 11.5 GB. [2019-10-22 08:59:30,035 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 962.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:59:30,036 INFO L168 Benchmark]: CACSL2BoogieTranslator took 578.75 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.6 MB). Free memory was 939.1 MB in the beginning and 1.1 GB in the end (delta: -183.8 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. [2019-10-22 08:59:30,036 INFO L168 Benchmark]: Boogie Preprocessor took 69.41 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: 7.3 MB). Peak memory consumption was 7.3 MB. Max. memory is 11.5 GB. [2019-10-22 08:59:30,037 INFO L168 Benchmark]: RCFGBuilder took 594.87 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: 45.3 MB). Peak memory consumption was 45.3 MB. Max. memory is 11.5 GB. [2019-10-22 08:59:30,037 INFO L168 Benchmark]: TraceAbstraction took 826.38 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 996.9 MB in the end (delta: 73.4 MB). Peak memory consumption was 73.4 MB. Max. memory is 11.5 GB. [2019-10-22 08:59:30,037 INFO L168 Benchmark]: Witness Printer took 41.47 ms. Allocated memory is still 1.2 GB. Free memory is still 996.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:59:30,041 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 962.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 578.75 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.6 MB). Free memory was 939.1 MB in the beginning and 1.1 GB in the end (delta: -183.8 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 69.41 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: 7.3 MB). Peak memory consumption was 7.3 MB. Max. memory is 11.5 GB. * RCFGBuilder took 594.87 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: 45.3 MB). Peak memory consumption was 45.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 826.38 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 996.9 MB in the end (delta: 73.4 MB). Peak memory consumption was 73.4 MB. Max. memory is 11.5 GB. * Witness Printer took 41.47 ms. Allocated memory is still 1.2 GB. Free memory is still 996.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 522]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L513] int i, j; [L514] int length = __VERIFIER_nondet_int(); [L515] COND TRUE length < 1 [L515] length = 1 VAL [length=1] [L516] int *arr = __builtin_alloca (length); VAL [__builtin_alloca (length)={1:0}, arr={1:0}, length=1] [L517] COND FALSE !(!arr) [L518] int *a = arr; [L520] int k = 0; VAL [__builtin_alloca (length)={1:0}, a={1:0}, arr={1:0}, k=0, length=1] [L520] COND TRUE k < length [L522] arr[k] = __VERIFIER_nondet_int() - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 53 locations, 13 error locations. Result: UNSAFE, OverallTime: 0.7s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 62 SDtfs, 104 SDslu, 37 SDs, 0 SdLazy, 150 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 43 NumberOfCodeBlocks, 43 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 29 ConstructedInterpolants, 0 QuantifiedInterpolants, 789 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...