./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength2_-read.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_29d5917a-280b-4171-b6d8-23ba3d595556/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_29d5917a-280b-4171-b6d8-23ba3d595556/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_29d5917a-280b-4171-b6d8-23ba3d595556/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_29d5917a-280b-4171-b6d8-23ba3d595556/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength2_-read.c -s /tmp/vcloud-vcloud-master/worker/run_dir_29d5917a-280b-4171-b6d8-23ba3d595556/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_29d5917a-280b-4171-b6d8-23ba3d595556/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 639853f2f40cff84155fe09902eff2b5a20185f5 ..................................................................................................................................................................................................................................................................................................................................................................................................................... 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 20:34:18,950 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 20:34:18,953 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 20:34:19,025 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 20:34:19,030 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 20:34:19,032 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 20:34:19,034 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 20:34:19,041 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 20:34:19,045 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 20:34:19,046 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 20:34:19,048 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 20:34:19,050 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 20:34:19,051 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 20:34:19,052 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 20:34:19,054 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 20:34:19,056 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 20:34:19,058 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 20:34:19,059 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 20:34:19,062 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 20:34:19,065 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 20:34:19,068 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 20:34:19,070 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 20:34:19,072 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 20:34:19,074 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 20:34:19,079 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 20:34:19,079 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 20:34:19,080 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 20:34:19,082 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 20:34:19,082 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 20:34:19,084 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 20:34:19,085 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 20:34:19,086 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 20:34:19,087 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 20:34:19,089 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 20:34:19,091 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 20:34:19,091 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 20:34:19,092 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 20:34:19,093 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 20:34:19,093 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 20:34:19,095 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 20:34:19,096 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 20:34:19,097 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_29d5917a-280b-4171-b6d8-23ba3d595556/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-11-29 20:34:19,130 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 20:34:19,130 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 20:34:19,133 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 20:34:19,133 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 20:34:19,133 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 20:34:19,134 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 20:34:19,134 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 20:34:19,134 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 20:34:19,135 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 20:34:19,135 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 20:34:19,136 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 20:34:19,137 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-29 20:34:19,137 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-29 20:34:19,137 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-29 20:34:19,138 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 20:34:19,138 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-29 20:34:19,138 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 20:34:19,138 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 20:34:19,139 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 20:34:19,139 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 20:34:19,139 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 20:34:19,140 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 20:34:19,140 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 20:34:19,140 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 20:34:19,141 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 20:34:19,141 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 20:34:19,141 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 20:34:19,142 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 20:34:19,142 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_29d5917a-280b-4171-b6d8-23ba3d595556/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_29d5917a-280b-4171-b6d8-23ba3d595556/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 639853f2f40cff84155fe09902eff2b5a20185f5 [2020-11-29 20:34:19,467 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 20:34:19,508 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 20:34:19,512 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 20:34:19,513 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 20:34:19,514 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 20:34:19,515 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_29d5917a-280b-4171-b6d8-23ba3d595556/bin/uautomizer/../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength2_-read.c [2020-11-29 20:34:19,606 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_29d5917a-280b-4171-b6d8-23ba3d595556/bin/uautomizer/data/09fc4c76b/1b4c106b593f439a8d76fa4742433de9/FLAG3065bd4d0 [2020-11-29 20:34:20,239 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 20:34:20,240 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_29d5917a-280b-4171-b6d8-23ba3d595556/sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength2_-read.c [2020-11-29 20:34:20,255 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_29d5917a-280b-4171-b6d8-23ba3d595556/bin/uautomizer/data/09fc4c76b/1b4c106b593f439a8d76fa4742433de9/FLAG3065bd4d0 [2020-11-29 20:34:20,597 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_29d5917a-280b-4171-b6d8-23ba3d595556/bin/uautomizer/data/09fc4c76b/1b4c106b593f439a8d76fa4742433de9 [2020-11-29 20:34:20,601 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 20:34:20,604 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-29 20:34:20,608 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 20:34:20,608 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 20:34:20,612 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 20:34:20,614 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:34:20" (1/1) ... [2020-11-29 20:34:20,616 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e34b3c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:34:20, skipping insertion in model container [2020-11-29 20:34:20,617 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:34:20" (1/1) ... [2020-11-29 20:34:20,629 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 20:34:20,647 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 20:34:20,854 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:34:20,877 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 20:34:20,903 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:34:20,921 INFO L208 MainTranslator]: Completed translation [2020-11-29 20:34:20,922 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:34:20 WrapperNode [2020-11-29 20:34:20,922 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 20:34:20,923 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 20:34:20,924 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 20:34:20,924 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 20:34:20,938 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:34:20" (1/1) ... [2020-11-29 20:34:20,939 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:34:20" (1/1) ... [2020-11-29 20:34:20,947 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:34:20" (1/1) ... [2020-11-29 20:34:20,948 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:34:20" (1/1) ... [2020-11-29 20:34:20,957 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:34:20" (1/1) ... [2020-11-29 20:34:20,963 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:34:20" (1/1) ... [2020-11-29 20:34:20,965 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:34:20" (1/1) ... [2020-11-29 20:34:20,968 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 20:34:20,969 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 20:34:20,969 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 20:34:20,970 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 20:34:20,971 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:34:20" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_29d5917a-280b-4171-b6d8-23ba3d595556/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 20:34:21,067 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-29 20:34:21,068 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 20:34:21,068 INFO L138 BoogieDeclarations]: Found implementation of procedure bar [2020-11-29 20:34:21,069 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2020-11-29 20:34:21,069 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-29 20:34:21,070 INFO L130 BoogieDeclarations]: Found specification of procedure bar [2020-11-29 20:34:21,070 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-29 20:34:21,071 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2020-11-29 20:34:21,071 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 20:34:21,071 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-29 20:34:21,073 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 20:34:21,073 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-29 20:34:21,073 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-29 20:34:21,073 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 20:34:21,636 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 20:34:21,637 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-11-29 20:34:21,638 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:34:21 BoogieIcfgContainer [2020-11-29 20:34:21,639 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 20:34:21,641 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 20:34:21,641 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 20:34:21,645 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 20:34:21,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 08:34:20" (1/3) ... [2020-11-29 20:34:21,646 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57c8b8e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 08:34:21, skipping insertion in model container [2020-11-29 20:34:21,647 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:34:20" (2/3) ... [2020-11-29 20:34:21,647 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57c8b8e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 08:34:21, skipping insertion in model container [2020-11-29 20:34:21,647 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:34:21" (3/3) ... [2020-11-29 20:34:21,649 INFO L111 eAbstractionObserver]: Analyzing ICFG ArraysOfVariableLength2_-read.c [2020-11-29 20:34:21,661 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 20:34:21,669 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 11 error locations. [2020-11-29 20:34:21,682 INFO L253 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2020-11-29 20:34:21,715 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 20:34:21,715 INFO L378 AbstractCegarLoop]: Hoare is false [2020-11-29 20:34:21,715 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 20:34:21,716 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 20:34:21,716 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 20:34:21,716 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 20:34:21,716 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 20:34:21,716 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 20:34:21,733 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states. [2020-11-29 20:34:21,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-29 20:34:21,743 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:34:21,744 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:34:21,745 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 20:34:21,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:34:21,752 INFO L82 PathProgramCache]: Analyzing trace with hash -1403638412, now seen corresponding path program 1 times [2020-11-29 20:34:21,763 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:34:21,764 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857432596] [2020-11-29 20:34:21,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:34:21,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:34:22,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 20:34:22,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:34:22,075 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 20:34:22,079 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857432596] [2020-11-29 20:34:22,080 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:34:22,081 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 20:34:22,082 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379035462] [2020-11-29 20:34:22,096 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 20:34:22,096 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:34:22,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 20:34:22,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 20:34:22,124 INFO L87 Difference]: Start difference. First operand 52 states. Second operand 3 states. [2020-11-29 20:34:22,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:34:22,330 INFO L93 Difference]: Finished difference Result 52 states and 57 transitions. [2020-11-29 20:34:22,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 20:34:22,333 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-11-29 20:34:22,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:34:22,353 INFO L225 Difference]: With dead ends: 52 [2020-11-29 20:34:22,355 INFO L226 Difference]: Without dead ends: 49 [2020-11-29 20:34:22,357 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 20:34:22,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-11-29 20:34:22,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2020-11-29 20:34:22,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-11-29 20:34:22,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 54 transitions. [2020-11-29 20:34:22,411 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 54 transitions. Word has length 10 [2020-11-29 20:34:22,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:34:22,412 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 54 transitions. [2020-11-29 20:34:22,413 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 20:34:22,413 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 54 transitions. [2020-11-29 20:34:22,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-29 20:34:22,414 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:34:22,415 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:34:22,415 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 20:34:22,416 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 20:34:22,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:34:22,418 INFO L82 PathProgramCache]: Analyzing trace with hash -1403995904, now seen corresponding path program 1 times [2020-11-29 20:34:22,418 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:34:22,419 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473963926] [2020-11-29 20:34:22,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:34:22,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:34:22,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 20:34:22,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:34:22,575 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 20:34:22,576 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473963926] [2020-11-29 20:34:22,576 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:34:22,577 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 20:34:22,577 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759422371] [2020-11-29 20:34:22,586 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:34:22,586 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:34:22,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:34:22,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:34:22,589 INFO L87 Difference]: Start difference. First operand 49 states and 54 transitions. Second operand 4 states. [2020-11-29 20:34:22,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:34:22,806 INFO L93 Difference]: Finished difference Result 56 states and 61 transitions. [2020-11-29 20:34:22,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 20:34:22,807 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-11-29 20:34:22,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:34:22,810 INFO L225 Difference]: With dead ends: 56 [2020-11-29 20:34:22,810 INFO L226 Difference]: Without dead ends: 56 [2020-11-29 20:34:22,811 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 20:34:22,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-11-29 20:34:22,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 49. [2020-11-29 20:34:22,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-11-29 20:34:22,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2020-11-29 20:34:22,837 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 10 [2020-11-29 20:34:22,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:34:22,838 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2020-11-29 20:34:22,838 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:34:22,838 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2020-11-29 20:34:22,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-29 20:34:22,839 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:34:22,839 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:34:22,840 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 20:34:22,840 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 20:34:22,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:34:22,841 INFO L82 PathProgramCache]: Analyzing trace with hash -571487811, now seen corresponding path program 1 times [2020-11-29 20:34:22,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:34:22,842 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655000169] [2020-11-29 20:34:22,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:34:22,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:34:23,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 20:34:23,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:34:23,010 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 20:34:23,010 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655000169] [2020-11-29 20:34:23,011 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:34:23,011 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-29 20:34:23,011 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566208939] [2020-11-29 20:34:23,012 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 20:34:23,012 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:34:23,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 20:34:23,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-29 20:34:23,022 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand 6 states. [2020-11-29 20:34:23,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:34:23,362 INFO L93 Difference]: Finished difference Result 63 states and 69 transitions. [2020-11-29 20:34:23,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 20:34:23,363 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-11-29 20:34:23,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:34:23,365 INFO L225 Difference]: With dead ends: 63 [2020-11-29 20:34:23,365 INFO L226 Difference]: Without dead ends: 63 [2020-11-29 20:34:23,365 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 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 20:34:23,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-11-29 20:34:23,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 57. [2020-11-29 20:34:23,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-11-29 20:34:23,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 63 transitions. [2020-11-29 20:34:23,375 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 63 transitions. Word has length 11 [2020-11-29 20:34:23,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:34:23,375 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 63 transitions. [2020-11-29 20:34:23,375 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 20:34:23,375 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 63 transitions. [2020-11-29 20:34:23,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-29 20:34:23,376 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:34:23,376 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:34:23,377 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-29 20:34:23,377 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 20:34:23,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:34:23,378 INFO L82 PathProgramCache]: Analyzing trace with hash 57103265, now seen corresponding path program 1 times [2020-11-29 20:34:23,378 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:34:23,378 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230120296] [2020-11-29 20:34:23,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:34:23,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:34:23,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 20:34:23,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:34:23,478 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 20:34:23,479 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230120296] [2020-11-29 20:34:23,479 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:34:23,479 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 20:34:23,479 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162894939] [2020-11-29 20:34:23,480 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 20:34:23,480 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:34:23,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 20:34:23,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-29 20:34:23,482 INFO L87 Difference]: Start difference. First operand 57 states and 63 transitions. Second operand 6 states. [2020-11-29 20:34:23,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:34:23,725 INFO L93 Difference]: Finished difference Result 55 states and 61 transitions. [2020-11-29 20:34:23,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 20:34:23,726 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-11-29 20:34:23,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:34:23,728 INFO L225 Difference]: With dead ends: 55 [2020-11-29 20:34:23,728 INFO L226 Difference]: Without dead ends: 55 [2020-11-29 20:34:23,729 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-11-29 20:34:23,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-11-29 20:34:23,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-11-29 20:34:23,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-11-29 20:34:23,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 61 transitions. [2020-11-29 20:34:23,738 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 61 transitions. Word has length 14 [2020-11-29 20:34:23,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:34:23,738 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 61 transitions. [2020-11-29 20:34:23,738 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 20:34:23,739 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 61 transitions. [2020-11-29 20:34:23,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-29 20:34:23,740 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:34:23,740 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:34:23,740 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-29 20:34:23,740 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 20:34:23,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:34:23,741 INFO L82 PathProgramCache]: Analyzing trace with hash 57103266, now seen corresponding path program 1 times [2020-11-29 20:34:23,742 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:34:23,742 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609534390] [2020-11-29 20:34:23,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:34:23,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:34:23,764 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:34:23,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:34:23,792 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:34:23,833 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:34:23,833 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 20:34:23,834 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-29 20:34:23,868 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 08:34:23 BoogieIcfgContainer [2020-11-29 20:34:23,869 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 20:34:23,869 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 20:34:23,869 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 20:34:23,870 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 20:34:23,870 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:34:21" (3/4) ... [2020-11-29 20:34:23,873 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-29 20:34:23,936 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_29d5917a-280b-4171-b6d8-23ba3d595556/bin/uautomizer/witness.graphml [2020-11-29 20:34:23,936 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 20:34:23,939 INFO L168 Benchmark]: Toolchain (without parser) took 3333.03 ms. Allocated memory was 100.7 MB in the beginning and 140.5 MB in the end (delta: 39.8 MB). Free memory was 72.8 MB in the beginning and 56.7 MB in the end (delta: 16.1 MB). Peak memory consumption was 55.5 MB. Max. memory is 16.1 GB. [2020-11-29 20:34:23,939 INFO L168 Benchmark]: CDTParser took 0.38 ms. Allocated memory is still 100.7 MB. Free memory was 58.3 MB in the beginning and 58.2 MB in the end (delta: 49.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:34:23,940 INFO L168 Benchmark]: CACSL2BoogieTranslator took 314.51 ms. Allocated memory is still 100.7 MB. Free memory was 72.6 MB in the beginning and 77.3 MB in the end (delta: -4.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-29 20:34:23,941 INFO L168 Benchmark]: Boogie Preprocessor took 44.68 ms. Allocated memory is still 100.7 MB. Free memory was 77.3 MB in the beginning and 75.8 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:34:23,942 INFO L168 Benchmark]: RCFGBuilder took 670.05 ms. Allocated memory is still 100.7 MB. Free memory was 75.5 MB in the beginning and 57.8 MB in the end (delta: 17.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-11-29 20:34:23,942 INFO L168 Benchmark]: TraceAbstraction took 2227.82 ms. Allocated memory was 100.7 MB in the beginning and 140.5 MB in the end (delta: 39.8 MB). Free memory was 57.2 MB in the beginning and 58.8 MB in the end (delta: -1.6 MB). Peak memory consumption was 40.1 MB. Max. memory is 16.1 GB. [2020-11-29 20:34:23,943 INFO L168 Benchmark]: Witness Printer took 66.92 ms. Allocated memory is still 140.5 MB. Free memory was 58.8 MB in the beginning and 56.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 20:34:23,947 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38 ms. Allocated memory is still 100.7 MB. Free memory was 58.3 MB in the beginning and 58.2 MB in the end (delta: 49.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 314.51 ms. Allocated memory is still 100.7 MB. Free memory was 72.6 MB in the beginning and 77.3 MB in the end (delta: -4.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 44.68 ms. Allocated memory is still 100.7 MB. Free memory was 77.3 MB in the beginning and 75.8 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 670.05 ms. Allocated memory is still 100.7 MB. Free memory was 75.5 MB in the beginning and 57.8 MB in the end (delta: 17.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2227.82 ms. Allocated memory was 100.7 MB in the beginning and 140.5 MB in the end (delta: 39.8 MB). Free memory was 57.2 MB in the beginning and 58.8 MB in the end (delta: -1.6 MB). Peak memory consumption was 40.1 MB. Max. memory is 16.1 GB. * Witness Printer took 66.92 ms. Allocated memory is still 140.5 MB. Free memory was 58.8 MB in the beginning and 56.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 14]: 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) VAL [\old(n)=0, \old(size)=0, b={3:0}] [L21] int a[n], i; [L22] i = 0 VAL [\old(n)=0, \old(size)=0, a={2:0}, b={3:0}, b={3:0}, i=0, n=0, size=0] [L22] COND FALSE !(i < size) VAL [\old(n)=0, \old(size)=0, a={2:0}, b={3:0}, b={3:0}, i=0, n=0, size=0] [L25] CALL bar(a, size + 1) VAL [\old(size)=1, b={2:0}] [L12] int res = 0, i; [L13] i = 0 VAL [\old(size)=1, b={2:0}, b={2:0}, i=0, res=0, size=1] [L13] COND TRUE i < size VAL [\old(size)=1, b={2:0}, b={2:0}, i=0, res=0, size=1] [L14] b[i] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 52 locations, 11 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.1s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 164 SDtfs, 101 SDslu, 178 SDs, 0 SdLazy, 340 SolverSat, 23 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=57occurred in iteration=3, 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, 4 MinimizatonAttempts, 13 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 59 NumberOfCodeBlocks, 59 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 41 ConstructedInterpolants, 0 QuantifiedInterpolants, 1198 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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...