./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/diff_usafe.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_ea6cd2b6-a807-4222-bada-63a8253b2708/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_ea6cd2b6-a807-4222-bada-63a8253b2708/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_ea6cd2b6-a807-4222-bada-63a8253b2708/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_ea6cd2b6-a807-4222-bada-63a8253b2708/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/diff_usafe.c -s /tmp/vcloud-vcloud-master/worker/run_dir_ea6cd2b6-a807-4222-bada-63a8253b2708/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_ea6cd2b6-a807-4222-bada-63a8253b2708/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 36668c3ad6b05a2dc08891e0da2e8018cdda58e2 .................................................................................................................................................................................................................................................... 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 18:48:55,344 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 18:48:55,348 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 18:48:55,430 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 18:48:55,431 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 18:48:55,437 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 18:48:55,440 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 18:48:55,445 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 18:48:55,448 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 18:48:55,455 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 18:48:55,457 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 18:48:55,461 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 18:48:55,462 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 18:48:55,466 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 18:48:55,468 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 18:48:55,472 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 18:48:55,473 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 18:48:55,479 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 18:48:55,483 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 18:48:55,493 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 18:48:55,495 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 18:48:55,497 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 18:48:55,500 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 18:48:55,501 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 18:48:55,512 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 18:48:55,513 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 18:48:55,513 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 18:48:55,516 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 18:48:55,517 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 18:48:55,518 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 18:48:55,519 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 18:48:55,521 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 18:48:55,523 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 18:48:55,525 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 18:48:55,526 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 18:48:55,527 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 18:48:55,528 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 18:48:55,528 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 18:48:55,529 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 18:48:55,530 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 18:48:55,531 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 18:48:55,533 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_ea6cd2b6-a807-4222-bada-63a8253b2708/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-11-29 18:48:55,581 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 18:48:55,582 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 18:48:55,584 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 18:48:55,585 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 18:48:55,585 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 18:48:55,585 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 18:48:55,586 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 18:48:55,586 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 18:48:55,586 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 18:48:55,587 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 18:48:55,588 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 18:48:55,588 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-29 18:48:55,589 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-29 18:48:55,589 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-29 18:48:55,589 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 18:48:55,589 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-29 18:48:55,590 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 18:48:55,590 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 18:48:55,590 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 18:48:55,591 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 18:48:55,591 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 18:48:55,591 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 18:48:55,592 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 18:48:55,592 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 18:48:55,592 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 18:48:55,593 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 18:48:55,593 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 18:48:55,593 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 18:48:55,593 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_ea6cd2b6-a807-4222-bada-63a8253b2708/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_ea6cd2b6-a807-4222-bada-63a8253b2708/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 36668c3ad6b05a2dc08891e0da2e8018cdda58e2 [2020-11-29 18:48:55,901 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 18:48:55,940 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 18:48:55,943 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 18:48:55,944 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 18:48:55,946 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 18:48:55,947 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_ea6cd2b6-a807-4222-bada-63a8253b2708/bin/uautomizer/../../sv-benchmarks/c/array-memsafety/diff_usafe.c [2020-11-29 18:48:56,050 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ea6cd2b6-a807-4222-bada-63a8253b2708/bin/uautomizer/data/0b3ccbd82/a562e6781c3f4e64896eaf3cbd4a5333/FLAGb8300452e [2020-11-29 18:48:56,598 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 18:48:56,599 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_ea6cd2b6-a807-4222-bada-63a8253b2708/sv-benchmarks/c/array-memsafety/diff_usafe.c [2020-11-29 18:48:56,606 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ea6cd2b6-a807-4222-bada-63a8253b2708/bin/uautomizer/data/0b3ccbd82/a562e6781c3f4e64896eaf3cbd4a5333/FLAGb8300452e [2020-11-29 18:48:56,955 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_ea6cd2b6-a807-4222-bada-63a8253b2708/bin/uautomizer/data/0b3ccbd82/a562e6781c3f4e64896eaf3cbd4a5333 [2020-11-29 18:48:56,958 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 18:48:56,960 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-29 18:48:56,962 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 18:48:56,962 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 18:48:56,971 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 18:48:56,972 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:48:56" (1/1) ... [2020-11-29 18:48:56,976 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58a5f00f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:48:56, skipping insertion in model container [2020-11-29 18:48:56,976 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:48:56" (1/1) ... [2020-11-29 18:48:56,986 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 18:48:57,006 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 18:48:57,216 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 18:48:57,227 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 18:48:57,247 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 18:48:57,260 INFO L208 MainTranslator]: Completed translation [2020-11-29 18:48:57,261 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:48:57 WrapperNode [2020-11-29 18:48:57,261 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 18:48:57,262 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 18:48:57,262 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 18:48:57,262 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 18:48:57,277 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:48:57" (1/1) ... [2020-11-29 18:48:57,277 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:48:57" (1/1) ... [2020-11-29 18:48:57,286 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:48:57" (1/1) ... [2020-11-29 18:48:57,286 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:48:57" (1/1) ... [2020-11-29 18:48:57,294 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:48:57" (1/1) ... [2020-11-29 18:48:57,299 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:48:57" (1/1) ... [2020-11-29 18:48:57,303 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:48:57" (1/1) ... [2020-11-29 18:48:57,313 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 18:48:57,315 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 18:48:57,315 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 18:48:57,315 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 18:48:57,316 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:48:57" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ea6cd2b6-a807-4222-bada-63a8253b2708/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 18:48:57,429 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-29 18:48:57,430 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 18:48:57,431 INFO L138 BoogieDeclarations]: Found implementation of procedure diff [2020-11-29 18:48:57,431 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-29 18:48:57,432 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-29 18:48:57,432 INFO L130 BoogieDeclarations]: Found specification of procedure diff [2020-11-29 18:48:57,433 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-29 18:48:57,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-29 18:48:57,433 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-29 18:48:57,434 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-29 18:48:57,435 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 18:48:57,435 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 18:48:57,893 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 18:48:57,894 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-11-29 18:48:57,896 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:48:57 BoogieIcfgContainer [2020-11-29 18:48:57,896 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 18:48:57,898 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 18:48:57,898 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 18:48:57,914 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 18:48:57,914 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 06:48:56" (1/3) ... [2020-11-29 18:48:57,916 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25af3977 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:48:57, skipping insertion in model container [2020-11-29 18:48:57,916 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:48:57" (2/3) ... [2020-11-29 18:48:57,917 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25af3977 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:48:57, skipping insertion in model container [2020-11-29 18:48:57,917 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:48:57" (3/3) ... [2020-11-29 18:48:57,919 INFO L111 eAbstractionObserver]: Analyzing ICFG diff_usafe.c [2020-11-29 18:48:57,932 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 18:48:57,937 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 9 error locations. [2020-11-29 18:48:57,949 INFO L253 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2020-11-29 18:48:57,972 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 18:48:57,973 INFO L378 AbstractCegarLoop]: Hoare is false [2020-11-29 18:48:57,973 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 18:48:57,973 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 18:48:57,974 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 18:48:57,974 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 18:48:57,974 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 18:48:57,974 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 18:48:57,991 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2020-11-29 18:48:58,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-29 18:48:58,001 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:48:58,002 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:48:58,002 INFO L429 AbstractCegarLoop]: === Iteration 1 === [diffErr2REQUIRES_VIOLATION, diffErr3REQUIRES_VIOLATION, diffErr4REQUIRES_VIOLATION, diffErr5REQUIRES_VIOLATION, diffErr0REQUIRES_VIOLATION, diffErr1REQUIRES_VIOLATION, diffErr7REQUIRES_VIOLATION, diffErr6REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 18:48:58,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:48:58,010 INFO L82 PathProgramCache]: Analyzing trace with hash -633667021, now seen corresponding path program 1 times [2020-11-29 18:48:58,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:48:58,022 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864773828] [2020-11-29 18:48:58,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:48:58,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:48:58,168 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:48:58,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:48:58,198 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:48:58,226 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 18:48:58,227 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 18:48:58,227 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 18:48:58,257 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 06:48:58 BoogieIcfgContainer [2020-11-29 18:48:58,258 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 18:48:58,259 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 18:48:58,259 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 18:48:58,259 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 18:48:58,260 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:48:57" (3/4) ... [2020-11-29 18:48:58,262 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-29 18:48:58,340 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_ea6cd2b6-a807-4222-bada-63a8253b2708/bin/uautomizer/witness.graphml [2020-11-29 18:48:58,340 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 18:48:58,343 INFO L168 Benchmark]: Toolchain (without parser) took 1382.14 ms. Allocated memory was 86.0 MB in the beginning and 119.5 MB in the end (delta: 33.6 MB). Free memory was 60.8 MB in the beginning and 92.6 MB in the end (delta: -31.8 MB). Peak memory consumption was 2.2 MB. Max. memory is 16.1 GB. [2020-11-29 18:48:58,344 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 86.0 MB. Free memory is still 50.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 18:48:58,350 INFO L168 Benchmark]: CACSL2BoogieTranslator took 299.78 ms. Allocated memory is still 86.0 MB. Free memory was 60.5 MB in the beginning and 63.3 MB in the end (delta: -2.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 18:48:58,354 INFO L168 Benchmark]: Boogie Preprocessor took 51.59 ms. Allocated memory is still 86.0 MB. Free memory was 63.3 MB in the beginning and 61.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 18:48:58,362 INFO L168 Benchmark]: RCFGBuilder took 581.43 ms. Allocated memory is still 86.0 MB. Free memory was 61.7 MB in the beginning and 46.7 MB in the end (delta: 15.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-29 18:48:58,363 INFO L168 Benchmark]: TraceAbstraction took 360.32 ms. Allocated memory was 86.0 MB in the beginning and 119.5 MB in the end (delta: 33.6 MB). Free memory was 46.3 MB in the beginning and 94.7 MB in the end (delta: -48.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 18:48:58,364 INFO L168 Benchmark]: Witness Printer took 81.77 ms. Allocated memory is still 119.5 MB. Free memory was 94.7 MB in the beginning and 92.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 18:48:58,367 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 86.0 MB. Free memory is still 50.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 299.78 ms. Allocated memory is still 86.0 MB. Free memory was 60.5 MB in the beginning and 63.3 MB in the end (delta: -2.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 51.59 ms. Allocated memory is still 86.0 MB. Free memory was 63.3 MB in the beginning and 61.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 581.43 ms. Allocated memory is still 86.0 MB. Free memory was 61.7 MB in the beginning and 46.7 MB in the end (delta: 15.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 360.32 ms. Allocated memory was 86.0 MB in the beginning and 119.5 MB in the end (delta: 33.6 MB). Free memory was 46.3 MB in the beginning and 94.7 MB in the end (delta: -48.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 81.77 ms. Allocated memory is still 119.5 MB. Free memory was 94.7 MB in the beginning and 92.6 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: 15]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L30] int *A; [L31] int Alen = __VERIFIER_nondet_int(); [L32] int *B; [L33] int Blen = __VERIFIER_nondet_int(); [L34] int *D; VAL [Alen=2, Blen=3] [L35] CALL diff(A, Alen, B, Blen, D) VAL [\old(Alen)=2, \old(Blen)=3, A={10:6}, B={7:9}, D={5:8}] [L5] int k = 0; [L6] int i = 0; [L7] int l1 = Alen; [L8] int l2 = Blen; [L9] int found; VAL [\old(Alen)=2, \old(Blen)=3, A={10:6}, A={10:6}, Alen=2, B={7:9}, B={7:9}, Blen=3, D={5:8}, D={5:8}, i=0, k=0, l1=2, l2=3] [L11] COND TRUE i < l1 [L12] int j = 0; [L13] found = 0 VAL [\old(Alen)=2, \old(Blen)=3, A={10:6}, A={10:6}, Alen=2, B={7:9}, B={7:9}, Blen=3, D={5:8}, D={5:8}, found=0, i=0, j=0, k=0, l1=2, l2=3] [L14] COND TRUE j < l2 && !found VAL [\old(Alen)=2, \old(Blen)=3, A={10:6}, A={10:6}, Alen=2, B={7:9}, B={7:9}, Blen=3, D={5:8}, D={5:8}, found=0, i=0, j=0, k=0, l1=2, l2=3] [L15] A[i] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 34 locations, 9 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred 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: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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...