./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength2_-write.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_39ddc63f-59b6-416b-acf8-f66ce6c87977/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_39ddc63f-59b6-416b-acf8-f66ce6c87977/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_39ddc63f-59b6-416b-acf8-f66ce6c87977/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_39ddc63f-59b6-416b-acf8-f66ce6c87977/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength2_-write.c -s /tmp/vcloud-vcloud-master/worker/run_dir_39ddc63f-59b6-416b-acf8-f66ce6c87977/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_39ddc63f-59b6-416b-acf8-f66ce6c87977/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 a6853fb9e064ccfef5e54a8bac94eb86beeed80f ........................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref) --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 20:04:31,061 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 20:04:31,064 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 20:04:31,136 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 20:04:31,150 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 20:04:31,152 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 20:04:31,155 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 20:04:31,158 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 20:04:31,163 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 20:04:31,165 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 20:04:31,167 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 20:04:31,168 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 20:04:31,169 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 20:04:31,171 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 20:04:31,173 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 20:04:31,175 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 20:04:31,176 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 20:04:31,178 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 20:04:31,181 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 20:04:31,184 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 20:04:31,187 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 20:04:31,189 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 20:04:31,191 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 20:04:31,192 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 20:04:31,197 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 20:04:31,197 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 20:04:31,198 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 20:04:31,199 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 20:04:31,200 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 20:04:31,201 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 20:04:31,202 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 20:04:31,203 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 20:04:31,204 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 20:04:31,206 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 20:04:31,207 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 20:04:31,207 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 20:04:31,208 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 20:04:31,209 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 20:04:31,209 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 20:04:31,210 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 20:04:31,211 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 20:04:31,212 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_39ddc63f-59b6-416b-acf8-f66ce6c87977/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-11-29 20:04:31,242 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 20:04:31,243 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 20:04:31,244 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 20:04:31,245 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 20:04:31,245 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 20:04:31,245 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 20:04:31,246 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 20:04:31,246 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 20:04:31,246 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 20:04:31,246 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 20:04:31,247 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 20:04:31,247 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-29 20:04:31,247 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-29 20:04:31,248 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-29 20:04:31,248 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 20:04:31,248 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-29 20:04:31,248 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 20:04:31,249 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 20:04:31,249 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 20:04:31,249 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 20:04:31,250 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 20:04:31,250 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 20:04:31,250 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 20:04:31,251 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 20:04:31,251 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 20:04:31,251 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 20:04:31,251 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 20:04:31,252 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 20:04:31,252 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_39ddc63f-59b6-416b-acf8-f66ce6c87977/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_39ddc63f-59b6-416b-acf8-f66ce6c87977/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a6853fb9e064ccfef5e54a8bac94eb86beeed80f [2020-11-29 20:04:31,500 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 20:04:31,530 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 20:04:31,532 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 20:04:31,537 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 20:04:31,538 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 20:04:31,539 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_39ddc63f-59b6-416b-acf8-f66ce6c87977/bin/uautomizer/../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength2_-write.c [2020-11-29 20:04:31,609 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_39ddc63f-59b6-416b-acf8-f66ce6c87977/bin/uautomizer/data/2dae269db/9e35c2925b9b4c8a9b1a30e74a342b2f/FLAGc40e3ff70 [2020-11-29 20:04:32,089 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 20:04:32,090 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_39ddc63f-59b6-416b-acf8-f66ce6c87977/sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength2_-write.c [2020-11-29 20:04:32,100 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_39ddc63f-59b6-416b-acf8-f66ce6c87977/bin/uautomizer/data/2dae269db/9e35c2925b9b4c8a9b1a30e74a342b2f/FLAGc40e3ff70 [2020-11-29 20:04:32,465 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_39ddc63f-59b6-416b-acf8-f66ce6c87977/bin/uautomizer/data/2dae269db/9e35c2925b9b4c8a9b1a30e74a342b2f [2020-11-29 20:04:32,467 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 20:04:32,468 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-29 20:04:32,470 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 20:04:32,470 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 20:04:32,473 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 20:04:32,474 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:04:32" (1/1) ... [2020-11-29 20:04:32,476 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6253bb77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:04:32, skipping insertion in model container [2020-11-29 20:04:32,476 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:04:32" (1/1) ... [2020-11-29 20:04:32,484 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 20:04:32,499 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 20:04:32,694 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:04:32,703 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 20:04:32,722 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:04:32,736 INFO L208 MainTranslator]: Completed translation [2020-11-29 20:04:32,736 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:04:32 WrapperNode [2020-11-29 20:04:32,737 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 20:04:32,738 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 20:04:32,738 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 20:04:32,738 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 20:04:32,750 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:04:32" (1/1) ... [2020-11-29 20:04:32,750 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:04:32" (1/1) ... [2020-11-29 20:04:32,758 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:04:32" (1/1) ... [2020-11-29 20:04:32,758 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:04:32" (1/1) ... [2020-11-29 20:04:32,767 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:04:32" (1/1) ... [2020-11-29 20:04:32,773 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:04:32" (1/1) ... [2020-11-29 20:04:32,775 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:04:32" (1/1) ... [2020-11-29 20:04:32,778 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 20:04:32,779 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 20:04:32,779 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 20:04:32,779 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 20:04:32,780 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:04:32" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_39ddc63f-59b6-416b-acf8-f66ce6c87977/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 20:04:32,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-29 20:04:32,869 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 20:04:32,869 INFO L138 BoogieDeclarations]: Found implementation of procedure bar [2020-11-29 20:04:32,870 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2020-11-29 20:04:32,870 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-29 20:04:32,870 INFO L130 BoogieDeclarations]: Found specification of procedure bar [2020-11-29 20:04:32,871 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-29 20:04:32,871 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2020-11-29 20:04:32,872 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 20:04:32,872 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-29 20:04:32,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 20:04:32,873 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-29 20:04:32,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-29 20:04:32,874 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 20:04:33,408 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 20:04:33,408 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-11-29 20:04:33,410 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:04:33 BoogieIcfgContainer [2020-11-29 20:04:33,413 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 20:04:33,436 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 20:04:33,436 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 20:04:33,447 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 20:04:33,448 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 08:04:32" (1/3) ... [2020-11-29 20:04:33,449 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65832ede and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 08:04:33, skipping insertion in model container [2020-11-29 20:04:33,449 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:04:32" (2/3) ... [2020-11-29 20:04:33,450 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65832ede and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 08:04:33, skipping insertion in model container [2020-11-29 20:04:33,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:04:33" (3/3) ... [2020-11-29 20:04:33,452 INFO L111 eAbstractionObserver]: Analyzing ICFG ArraysOfVariableLength2_-write.c [2020-11-29 20:04:33,467 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 20:04:33,473 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 11 error locations. [2020-11-29 20:04:33,489 INFO L253 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2020-11-29 20:04:33,522 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 20:04:33,522 INFO L378 AbstractCegarLoop]: Hoare is false [2020-11-29 20:04:33,523 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 20:04:33,523 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 20:04:33,523 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 20:04:33,523 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 20:04:33,524 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 20:04:33,524 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 20:04:33,542 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states. [2020-11-29 20:04:33,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-29 20:04:33,553 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:04:33,554 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:04:33,554 INFO L429 AbstractCegarLoop]: === Iteration 1 === [barErr1REQUIRES_VIOLATION, barErr0REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-11-29 20:04:33,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:04:33,562 INFO L82 PathProgramCache]: Analyzing trace with hash -1403638412, now seen corresponding path program 1 times [2020-11-29 20:04:33,573 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:04:33,574 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164238135] [2020-11-29 20:04:33,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:04:33,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:04:33,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 20:04:33,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:04:33,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:04:33,836 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164238135] [2020-11-29 20:04:33,838 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:04:33,838 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 20:04:33,840 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354116375] [2020-11-29 20:04:33,845 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 20:04:33,845 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:04:33,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 20:04:33,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 20:04:33,873 INFO L87 Difference]: Start difference. First operand 52 states. Second operand 3 states. [2020-11-29 20:04:34,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:04:34,075 INFO L93 Difference]: Finished difference Result 52 states and 57 transitions. [2020-11-29 20:04:34,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 20:04:34,078 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-11-29 20:04:34,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:04:34,100 INFO L225 Difference]: With dead ends: 52 [2020-11-29 20:04:34,110 INFO L226 Difference]: Without dead ends: 49 [2020-11-29 20:04:34,113 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 20:04:34,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-11-29 20:04:34,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2020-11-29 20:04:34,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-11-29 20:04:34,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 54 transitions. [2020-11-29 20:04:34,156 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 54 transitions. Word has length 10 [2020-11-29 20:04:34,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:04:34,156 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 54 transitions. [2020-11-29 20:04:34,156 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 20:04:34,156 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 54 transitions. [2020-11-29 20:04:34,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-29 20:04:34,157 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:04:34,157 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:04:34,158 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 20:04:34,158 INFO L429 AbstractCegarLoop]: === Iteration 2 === [barErr1REQUIRES_VIOLATION, barErr0REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-11-29 20:04:34,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:04:34,159 INFO L82 PathProgramCache]: Analyzing trace with hash -1403995904, now seen corresponding path program 1 times [2020-11-29 20:04:34,159 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:04:34,159 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609932505] [2020-11-29 20:04:34,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:04:34,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:04:34,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 20:04:34,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:04:34,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:04:34,269 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609932505] [2020-11-29 20:04:34,269 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:04:34,269 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 20:04:34,270 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657683228] [2020-11-29 20:04:34,271 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:04:34,271 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:04:34,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:04:34,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:04:34,273 INFO L87 Difference]: Start difference. First operand 49 states and 54 transitions. Second operand 4 states. [2020-11-29 20:04:34,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:04:34,527 INFO L93 Difference]: Finished difference Result 56 states and 61 transitions. [2020-11-29 20:04:34,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 20:04:34,529 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-11-29 20:04:34,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:04:34,532 INFO L225 Difference]: With dead ends: 56 [2020-11-29 20:04:34,532 INFO L226 Difference]: Without dead ends: 56 [2020-11-29 20:04:34,533 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:04:34,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-11-29 20:04:34,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 49. [2020-11-29 20:04:34,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-11-29 20:04:34,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2020-11-29 20:04:34,558 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 10 [2020-11-29 20:04:34,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:04:34,560 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2020-11-29 20:04:34,560 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:04:34,561 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2020-11-29 20:04:34,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-29 20:04:34,562 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:04:34,563 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:04:34,563 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 20:04:34,564 INFO L429 AbstractCegarLoop]: === Iteration 3 === [barErr1REQUIRES_VIOLATION, barErr0REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-11-29 20:04:34,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:04:34,566 INFO L82 PathProgramCache]: Analyzing trace with hash -571487811, now seen corresponding path program 1 times [2020-11-29 20:04:34,566 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:04:34,567 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656076408] [2020-11-29 20:04:34,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:04:34,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:04:34,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 20:04:34,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:04:34,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:04:34,768 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656076408] [2020-11-29 20:04:34,769 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:04:34,769 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 20:04:34,769 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405983963] [2020-11-29 20:04:34,770 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 20:04:34,770 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:04:34,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 20:04:34,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-29 20:04:34,772 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand 6 states. [2020-11-29 20:04:35,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:04:35,053 INFO L93 Difference]: Finished difference Result 47 states and 51 transitions. [2020-11-29 20:04:35,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 20:04:35,056 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-11-29 20:04:35,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:04:35,058 INFO L225 Difference]: With dead ends: 47 [2020-11-29 20:04:35,058 INFO L226 Difference]: Without dead ends: 47 [2020-11-29 20:04:35,059 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-11-29 20:04:35,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-11-29 20:04:35,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-11-29 20:04:35,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-11-29 20:04:35,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2020-11-29 20:04:35,067 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 11 [2020-11-29 20:04:35,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:04:35,067 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2020-11-29 20:04:35,067 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 20:04:35,067 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2020-11-29 20:04:35,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-29 20:04:35,068 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:04:35,068 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:04:35,069 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-29 20:04:35,069 INFO L429 AbstractCegarLoop]: === Iteration 4 === [barErr1REQUIRES_VIOLATION, barErr0REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-11-29 20:04:35,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:04:35,070 INFO L82 PathProgramCache]: Analyzing trace with hash -571487810, now seen corresponding path program 1 times [2020-11-29 20:04:35,070 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:04:35,070 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844130092] [2020-11-29 20:04:35,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:04:35,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:04:35,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 20:04:35,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:04:35,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:04:35,234 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844130092] [2020-11-29 20:04:35,234 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:04:35,234 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 20:04:35,235 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72743964] [2020-11-29 20:04:35,235 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 20:04:35,235 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:04:35,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 20:04:35,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-29 20:04:35,237 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand 6 states. [2020-11-29 20:04:35,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:04:35,631 INFO L93 Difference]: Finished difference Result 72 states and 83 transitions. [2020-11-29 20:04:35,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-29 20:04:35,632 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-11-29 20:04:35,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:04:35,636 INFO L225 Difference]: With dead ends: 72 [2020-11-29 20:04:35,637 INFO L226 Difference]: Without dead ends: 72 [2020-11-29 20:04:35,637 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-11-29 20:04:35,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-11-29 20:04:35,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 56. [2020-11-29 20:04:35,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-11-29 20:04:35,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 64 transitions. [2020-11-29 20:04:35,650 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 64 transitions. Word has length 11 [2020-11-29 20:04:35,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:04:35,650 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 64 transitions. [2020-11-29 20:04:35,650 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 20:04:35,651 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 64 transitions. [2020-11-29 20:04:35,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-29 20:04:35,651 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:04:35,652 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:04:35,652 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-29 20:04:35,652 INFO L429 AbstractCegarLoop]: === Iteration 5 === [barErr1REQUIRES_VIOLATION, barErr0REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-11-29 20:04:35,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:04:35,653 INFO L82 PathProgramCache]: Analyzing trace with hash -536252953, now seen corresponding path program 1 times [2020-11-29 20:04:35,653 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:04:35,653 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324606698] [2020-11-29 20:04:35,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:04:35,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:04:35,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 20:04:35,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:04:35,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:04:35,714 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324606698] [2020-11-29 20:04:35,715 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:04:35,715 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 20:04:35,715 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680180980] [2020-11-29 20:04:35,716 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:04:35,716 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:04:35,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:04:35,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:04:35,717 INFO L87 Difference]: Start difference. First operand 56 states and 64 transitions. Second operand 4 states. [2020-11-29 20:04:35,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:04:35,895 INFO L93 Difference]: Finished difference Result 55 states and 63 transitions. [2020-11-29 20:04:35,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 20:04:35,896 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-11-29 20:04:35,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:04:35,897 INFO L225 Difference]: With dead ends: 55 [2020-11-29 20:04:35,897 INFO L226 Difference]: Without dead ends: 55 [2020-11-29 20:04:35,898 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:04:35,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-11-29 20:04:35,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-11-29 20:04:35,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-11-29 20:04:35,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 63 transitions. [2020-11-29 20:04:35,912 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 63 transitions. Word has length 12 [2020-11-29 20:04:35,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:04:35,913 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 63 transitions. [2020-11-29 20:04:35,913 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:04:35,914 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 63 transitions. [2020-11-29 20:04:35,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-29 20:04:35,915 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:04:35,915 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:04:35,915 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-29 20:04:35,916 INFO L429 AbstractCegarLoop]: === Iteration 6 === [barErr1REQUIRES_VIOLATION, barErr0REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-11-29 20:04:35,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:04:35,916 INFO L82 PathProgramCache]: Analyzing trace with hash -536252952, now seen corresponding path program 1 times [2020-11-29 20:04:35,917 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:04:35,917 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984835342] [2020-11-29 20:04:35,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:04:35,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:04:35,971 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:04:35,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:04:35,996 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:04:36,041 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:04:36,042 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 20:04:36,042 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-29 20:04:36,080 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 08:04:36 BoogieIcfgContainer [2020-11-29 20:04:36,080 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 20:04:36,081 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 20:04:36,081 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 20:04:36,082 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 20:04:36,086 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:04:33" (3/4) ... [2020-11-29 20:04:36,089 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-29 20:04:36,136 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_39ddc63f-59b6-416b-acf8-f66ce6c87977/bin/uautomizer/witness.graphml [2020-11-29 20:04:36,137 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 20:04:36,139 INFO L168 Benchmark]: Toolchain (without parser) took 3669.47 ms. Allocated memory was 83.9 MB in the beginning and 100.7 MB in the end (delta: 16.8 MB). Free memory was 53.9 MB in the beginning and 64.9 MB in the end (delta: -11.0 MB). Peak memory consumption was 5.3 MB. Max. memory is 16.1 GB. [2020-11-29 20:04:36,140 INFO L168 Benchmark]: CDTParser took 1.39 ms. Allocated memory is still 83.9 MB. Free memory was 43.5 MB in the beginning and 43.4 MB in the end (delta: 75.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:04:36,141 INFO L168 Benchmark]: CACSL2BoogieTranslator took 267.13 ms. Allocated memory is still 83.9 MB. Free memory was 53.7 MB in the beginning and 61.5 MB in the end (delta: -7.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 20:04:36,141 INFO L168 Benchmark]: Boogie Preprocessor took 40.13 ms. Allocated memory is still 83.9 MB. Free memory was 61.5 MB in the beginning and 60.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 20:04:36,142 INFO L168 Benchmark]: RCFGBuilder took 646.70 ms. Allocated memory is still 83.9 MB. Free memory was 60.0 MB in the beginning and 42.0 MB in the end (delta: 18.0 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-11-29 20:04:36,143 INFO L168 Benchmark]: TraceAbstraction took 2644.00 ms. Allocated memory is still 100.7 MB. Free memory was 80.0 MB in the beginning and 66.7 MB in the end (delta: 13.3 MB). Peak memory consumption was 11.2 MB. Max. memory is 16.1 GB. [2020-11-29 20:04:36,144 INFO L168 Benchmark]: Witness Printer took 55.75 ms. Allocated memory is still 100.7 MB. Free memory was 66.7 MB in the beginning and 64.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 20:04:36,147 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.39 ms. Allocated memory is still 83.9 MB. Free memory was 43.5 MB in the beginning and 43.4 MB in the end (delta: 75.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 267.13 ms. Allocated memory is still 83.9 MB. Free memory was 53.7 MB in the beginning and 61.5 MB in the end (delta: -7.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 40.13 ms. Allocated memory is still 83.9 MB. Free memory was 61.5 MB in the beginning and 60.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 646.70 ms. Allocated memory is still 83.9 MB. Free memory was 60.0 MB in the beginning and 42.0 MB in the end (delta: 18.0 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2644.00 ms. Allocated memory is still 100.7 MB. Free memory was 80.0 MB in the beginning and 66.7 MB in the end (delta: 13.3 MB). Peak memory consumption was 11.2 MB. Max. memory is 16.1 GB. * Witness Printer took 55.75 ms. Allocated memory is still 100.7 MB. Free memory was 66.7 MB in the beginning and 64.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 23]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L32] int i, b[100]; [L33] i = 0 VAL [b={3:0}, i=0] [L33] COND TRUE i < 100 VAL [b={3:0}, i=0] [L34] CALL foo(i, b, i + 1) VAL [\old(n)=0, \old(size)=1, b={3:0}] [L21] int a[n], i; [L22] i = 0 VAL [\old(n)=0, \old(size)=1, a={2:0}, b={3:0}, b={3:0}, i=0, n=0, size=1] [L22] COND TRUE i < size VAL [\old(n)=0, \old(size)=1, a={2:0}, b={3:0}, b={3:0}, i=0, n=0, size=1] [L23] EXPR b[i] VAL [\old(n)=0, \old(size)=1, a={2:0}, b={3:0}, b={3:0}, b[i]=402, i=0, n=0, size=1] [L23] a[i] = b[i] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 52 locations, 11 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.5s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 200 SDtfs, 125 SDslu, 165 SDs, 0 SdLazy, 439 SolverSat, 33 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=56occurred in iteration=4, 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, 23 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 66 NumberOfCodeBlocks, 66 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 49 ConstructedInterpolants, 0 QuantifiedInterpolants, 1884 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...