./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength_-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_c9220ee1-a967-4808-80bd-01f9ace0b2f2/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_c9220ee1-a967-4808-80bd-01f9ace0b2f2/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_c9220ee1-a967-4808-80bd-01f9ace0b2f2/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_c9220ee1-a967-4808-80bd-01f9ace0b2f2/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength_-write.c -s /tmp/vcloud-vcloud-master/worker/run_dir_c9220ee1-a967-4808-80bd-01f9ace0b2f2/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_c9220ee1-a967-4808-80bd-01f9ace0b2f2/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 0dfe0f165ef563fbd088ad0368faf44ddd32870a ..................................................................................................................................................................................................................................................................................... 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 21:58:10,706 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 21:58:10,712 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 21:58:10,780 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 21:58:10,781 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 21:58:10,783 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 21:58:10,785 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 21:58:10,788 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 21:58:10,791 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 21:58:10,792 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 21:58:10,794 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 21:58:10,795 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 21:58:10,796 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 21:58:10,798 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 21:58:10,799 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 21:58:10,801 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 21:58:10,803 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 21:58:10,804 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 21:58:10,807 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 21:58:10,810 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 21:58:10,813 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 21:58:10,815 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 21:58:10,817 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 21:58:10,819 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 21:58:10,823 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 21:58:10,824 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 21:58:10,825 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 21:58:10,826 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 21:58:10,827 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 21:58:10,829 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 21:58:10,829 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 21:58:10,831 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 21:58:10,832 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 21:58:10,833 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 21:58:10,835 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 21:58:10,836 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 21:58:10,837 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 21:58:10,837 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 21:58:10,837 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 21:58:10,838 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 21:58:10,839 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 21:58:10,840 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_c9220ee1-a967-4808-80bd-01f9ace0b2f2/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-11-29 21:58:10,867 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 21:58:10,867 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 21:58:10,868 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 21:58:10,869 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 21:58:10,869 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 21:58:10,869 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 21:58:10,870 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 21:58:10,870 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 21:58:10,870 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 21:58:10,870 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 21:58:10,870 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 21:58:10,871 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-29 21:58:10,871 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-29 21:58:10,871 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-29 21:58:10,871 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 21:58:10,872 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-29 21:58:10,872 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 21:58:10,872 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 21:58:10,873 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 21:58:10,873 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 21:58:10,873 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 21:58:10,873 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 21:58:10,874 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 21:58:10,874 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 21:58:10,874 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 21:58:10,874 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 21:58:10,875 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 21:58:10,875 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 21:58:10,875 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_c9220ee1-a967-4808-80bd-01f9ace0b2f2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_c9220ee1-a967-4808-80bd-01f9ace0b2f2/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0dfe0f165ef563fbd088ad0368faf44ddd32870a [2020-11-29 21:58:11,177 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 21:58:11,208 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 21:58:11,211 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 21:58:11,215 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 21:58:11,216 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 21:58:11,219 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_c9220ee1-a967-4808-80bd-01f9ace0b2f2/bin/uautomizer/../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength_-write.c [2020-11-29 21:58:11,306 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c9220ee1-a967-4808-80bd-01f9ace0b2f2/bin/uautomizer/data/64f010054/ede1facbcd32406c96e0b4beb190a5a5/FLAGa4cd2ebd3 [2020-11-29 21:58:11,872 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 21:58:11,875 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_c9220ee1-a967-4808-80bd-01f9ace0b2f2/sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength_-write.c [2020-11-29 21:58:11,885 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c9220ee1-a967-4808-80bd-01f9ace0b2f2/bin/uautomizer/data/64f010054/ede1facbcd32406c96e0b4beb190a5a5/FLAGa4cd2ebd3 [2020-11-29 21:58:12,259 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_c9220ee1-a967-4808-80bd-01f9ace0b2f2/bin/uautomizer/data/64f010054/ede1facbcd32406c96e0b4beb190a5a5 [2020-11-29 21:58:12,262 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 21:58:12,264 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-29 21:58:12,266 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 21:58:12,266 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 21:58:12,270 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 21:58:12,271 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 09:58:12" (1/1) ... [2020-11-29 21:58:12,273 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f9855e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:58:12, skipping insertion in model container [2020-11-29 21:58:12,274 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 09:58:12" (1/1) ... [2020-11-29 21:58:12,282 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 21:58:12,296 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 21:58:12,481 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 21:58:12,522 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 21:58:12,541 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 21:58:12,556 INFO L208 MainTranslator]: Completed translation [2020-11-29 21:58:12,556 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:58:12 WrapperNode [2020-11-29 21:58:12,557 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 21:58:12,558 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 21:58:12,558 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 21:58:12,559 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 21:58:12,572 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:58:12" (1/1) ... [2020-11-29 21:58:12,572 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:58:12" (1/1) ... [2020-11-29 21:58:12,580 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:58:12" (1/1) ... [2020-11-29 21:58:12,580 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:58:12" (1/1) ... [2020-11-29 21:58:12,587 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:58:12" (1/1) ... [2020-11-29 21:58:12,593 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:58:12" (1/1) ... [2020-11-29 21:58:12,595 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:58:12" (1/1) ... [2020-11-29 21:58:12,597 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 21:58:12,598 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 21:58:12,598 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 21:58:12,599 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 21:58:12,600 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:58:12" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c9220ee1-a967-4808-80bd-01f9ace0b2f2/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 21:58:12,677 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-29 21:58:12,678 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 21:58:12,678 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2020-11-29 21:58:12,678 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-29 21:58:12,678 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2020-11-29 21:58:12,679 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-29 21:58:12,679 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-29 21:58:12,679 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 21:58:12,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-29 21:58:12,680 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 21:58:12,680 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-29 21:58:12,680 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 21:58:13,050 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 21:58:13,050 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-11-29 21:58:13,052 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 09:58:13 BoogieIcfgContainer [2020-11-29 21:58:13,052 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 21:58:13,056 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 21:58:13,056 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 21:58:13,061 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 21:58:13,062 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 09:58:12" (1/3) ... [2020-11-29 21:58:13,063 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ebf441 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 09:58:13, skipping insertion in model container [2020-11-29 21:58:13,063 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:58:12" (2/3) ... [2020-11-29 21:58:13,064 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ebf441 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 09:58:13, skipping insertion in model container [2020-11-29 21:58:13,064 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 09:58:13" (3/3) ... [2020-11-29 21:58:13,066 INFO L111 eAbstractionObserver]: Analyzing ICFG ArraysOfVariableLength_-write.c [2020-11-29 21:58:13,081 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 21:58:13,084 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 8 error locations. [2020-11-29 21:58:13,096 INFO L253 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2020-11-29 21:58:13,115 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 21:58:13,115 INFO L378 AbstractCegarLoop]: Hoare is false [2020-11-29 21:58:13,116 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 21:58:13,116 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 21:58:13,116 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 21:58:13,116 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 21:58:13,116 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 21:58:13,117 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 21:58:13,131 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2020-11-29 21:58:13,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-29 21:58:13,140 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:58:13,141 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:58:13,142 INFO L429 AbstractCegarLoop]: === Iteration 1 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-11-29 21:58:13,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:58:13,149 INFO L82 PathProgramCache]: Analyzing trace with hash 1909189377, now seen corresponding path program 1 times [2020-11-29 21:58:13,159 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:58:13,160 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717098923] [2020-11-29 21:58:13,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:58:13,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:58:13,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 21:58:13,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:58:13,364 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 21:58:13,365 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717098923] [2020-11-29 21:58:13,366 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:58:13,366 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 21:58:13,367 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996388289] [2020-11-29 21:58:13,372 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 21:58:13,372 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:58:13,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 21:58:13,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 21:58:13,391 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 4 states. [2020-11-29 21:58:13,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:58:13,707 INFO L93 Difference]: Finished difference Result 58 states and 63 transitions. [2020-11-29 21:58:13,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 21:58:13,710 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-11-29 21:58:13,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:58:13,720 INFO L225 Difference]: With dead ends: 58 [2020-11-29 21:58:13,726 INFO L226 Difference]: Without dead ends: 54 [2020-11-29 21:58:13,730 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 21:58:13,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-11-29 21:58:13,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 39. [2020-11-29 21:58:13,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-11-29 21:58:13,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2020-11-29 21:58:13,781 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 10 [2020-11-29 21:58:13,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:58:13,782 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2020-11-29 21:58:13,783 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 21:58:13,784 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2020-11-29 21:58:13,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-29 21:58:13,785 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:58:13,785 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:58:13,785 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 21:58:13,786 INFO L429 AbstractCegarLoop]: === Iteration 2 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-11-29 21:58:13,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:58:13,787 INFO L82 PathProgramCache]: Analyzing trace with hash -941983064, now seen corresponding path program 1 times [2020-11-29 21:58:13,787 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:58:13,788 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091726502] [2020-11-29 21:58:13,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:58:13,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:58:13,840 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:58:13,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:58:13,858 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:58:13,879 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 21:58:13,879 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 21:58:13,880 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 21:58:13,903 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 09:58:13 BoogieIcfgContainer [2020-11-29 21:58:13,903 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 21:58:13,904 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 21:58:13,904 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 21:58:13,905 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 21:58:13,905 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 09:58:13" (3/4) ... [2020-11-29 21:58:13,908 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-29 21:58:13,948 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_c9220ee1-a967-4808-80bd-01f9ace0b2f2/bin/uautomizer/witness.graphml [2020-11-29 21:58:13,948 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 21:58:13,950 INFO L168 Benchmark]: Toolchain (without parser) took 1685.66 ms. Allocated memory is still 109.1 MB. Free memory was 79.6 MB in the beginning and 66.9 MB in the end (delta: 12.7 MB). Peak memory consumption was 13.5 MB. Max. memory is 16.1 GB. [2020-11-29 21:58:13,951 INFO L168 Benchmark]: CDTParser took 1.03 ms. Allocated memory is still 79.7 MB. Free memory was 37.3 MB in the beginning and 37.3 MB in the end (delta: 69.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 21:58:13,952 INFO L168 Benchmark]: CACSL2BoogieTranslator took 291.67 ms. Allocated memory is still 109.1 MB. Free memory was 79.3 MB in the beginning and 87.1 MB in the end (delta: -7.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-29 21:58:13,953 INFO L168 Benchmark]: Boogie Preprocessor took 39.13 ms. Allocated memory is still 109.1 MB. Free memory was 87.1 MB in the beginning and 85.7 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 21:58:13,953 INFO L168 Benchmark]: RCFGBuilder took 456.48 ms. Allocated memory is still 109.1 MB. Free memory was 85.7 MB in the beginning and 70.8 MB in the end (delta: 14.9 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-11-29 21:58:13,954 INFO L168 Benchmark]: TraceAbstraction took 847.76 ms. Allocated memory is still 109.1 MB. Free memory was 70.3 MB in the beginning and 68.4 MB in the end (delta: 1.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 16.1 GB. [2020-11-29 21:58:13,955 INFO L168 Benchmark]: Witness Printer took 44.04 ms. Allocated memory is still 109.1 MB. Free memory was 68.4 MB in the beginning and 66.9 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 21:58:13,958 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.03 ms. Allocated memory is still 79.7 MB. Free memory was 37.3 MB in the beginning and 37.3 MB in the end (delta: 69.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 291.67 ms. Allocated memory is still 109.1 MB. Free memory was 79.3 MB in the beginning and 87.1 MB in the end (delta: -7.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 39.13 ms. Allocated memory is still 109.1 MB. Free memory was 87.1 MB in the beginning and 85.7 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 456.48 ms. Allocated memory is still 109.1 MB. Free memory was 85.7 MB in the beginning and 70.8 MB in the end (delta: 14.9 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 847.76 ms. Allocated memory is still 109.1 MB. Free memory was 70.3 MB in the beginning and 68.4 MB in the end (delta: 1.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 16.1 GB. * Witness Printer took 44.04 ms. Allocated memory is still 109.1 MB. Free memory was 68.4 MB in the beginning and 66.9 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 15]: array index can be out of bounds array index can be out of bounds We found a FailurePath: [L21] int i, b[100]; [L22] i = 0 VAL [b={2:0}, i=0] [L22] COND TRUE i < 100 VAL [b={2:0}, i=0] [L23] CALL foo(i, b, i + 1) VAL [\old(n)=0, \old(size)=1, b={2:0}] [L13] int a[n], i; [L14] i = 0 VAL [\old(n)=0, \old(size)=1, b={2:0}, b={2:0}, i=0, n=0, size=1] [L14] COND TRUE i < size VAL [\old(n)=0, \old(size)=1, b={2:0}, b={2:0}, i=0, n=0, size=1] [L15] a[i] VAL [\old(n)=0, \old(size)=1, b={2:0}, b={2:0}, i=0, n=0, size=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 40 locations, 8 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 30 SDtfs, 27 SDslu, 19 SDs, 0 SdLazy, 64 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 15 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 180 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...