./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_2683110d-88f8-4aa0-8fb2-cf3a5f1bd25c/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_2683110d-88f8-4aa0-8fb2-cf3a5f1bd25c/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_2683110d-88f8-4aa0-8fb2-cf3a5f1bd25c/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_2683110d-88f8-4aa0-8fb2-cf3a5f1bd25c/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength2_-read.c -s /tmp/vcloud-vcloud-master/worker/run_dir_2683110d-88f8-4aa0-8fb2-cf3a5f1bd25c/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_2683110d-88f8-4aa0-8fb2-cf3a5f1bd25c/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 [2020-11-28 03:05:31,223 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:05:31,251 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:05:31,325 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:05:31,326 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:05:31,327 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:05:31,330 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:05:31,333 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:05:31,336 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:05:31,337 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:05:31,339 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:05:31,341 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:05:31,341 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:05:31,343 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:05:31,345 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:05:31,347 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:05:31,348 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:05:31,350 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:05:31,353 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:05:31,357 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:05:31,360 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:05:31,370 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:05:31,372 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:05:31,374 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:05:31,378 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:05:31,379 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:05:31,379 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:05:31,381 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:05:31,387 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:05:31,389 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:05:31,389 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:05:31,392 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:05:31,395 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:05:31,396 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:05:31,398 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:05:31,399 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:05:31,399 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:05:31,400 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:05:31,400 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:05:31,403 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:05:31,404 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:05:31,407 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_2683110d-88f8-4aa0-8fb2-cf3a5f1bd25c/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-11-28 03:05:31,471 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:05:31,472 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:05:31,475 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:05:31,475 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:05:31,475 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:05:31,476 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:05:31,476 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:05:31,476 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 03:05:31,477 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:05:31,477 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:05:31,478 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:05:31,479 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-28 03:05:31,479 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-28 03:05:31,479 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-28 03:05:31,480 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:05:31,480 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 03:05:31,480 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:05:31,481 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:05:31,481 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:05:31,481 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:05:31,481 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:05:31,482 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:05:31,482 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:05:31,482 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:05:31,483 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:05:31,483 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:05:31,483 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 03:05:31,484 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:05:31,484 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_2683110d-88f8-4aa0-8fb2-cf3a5f1bd25c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_2683110d-88f8-4aa0-8fb2-cf3a5f1bd25c/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 639853f2f40cff84155fe09902eff2b5a20185f5 [2020-11-28 03:05:31,790 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:05:31,825 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:05:31,831 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:05:31,832 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:05:31,833 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:05:31,835 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_2683110d-88f8-4aa0-8fb2-cf3a5f1bd25c/bin/uautomizer/../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength2_-read.c [2020-11-28 03:05:31,940 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2683110d-88f8-4aa0-8fb2-cf3a5f1bd25c/bin/uautomizer/data/b1781397c/217494a63b464394bc010afd0650771f/FLAGff01bf28b [2020-11-28 03:05:32,612 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:05:32,615 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_2683110d-88f8-4aa0-8fb2-cf3a5f1bd25c/sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength2_-read.c [2020-11-28 03:05:32,621 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2683110d-88f8-4aa0-8fb2-cf3a5f1bd25c/bin/uautomizer/data/b1781397c/217494a63b464394bc010afd0650771f/FLAGff01bf28b [2020-11-28 03:05:32,981 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_2683110d-88f8-4aa0-8fb2-cf3a5f1bd25c/bin/uautomizer/data/b1781397c/217494a63b464394bc010afd0650771f [2020-11-28 03:05:32,984 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:05:32,986 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-28 03:05:32,993 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:05:32,993 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:05:32,997 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:05:32,999 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:05:32" (1/1) ... [2020-11-28 03:05:33,002 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a3ed847 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:05:33, skipping insertion in model container [2020-11-28 03:05:33,002 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:05:32" (1/1) ... [2020-11-28 03:05:33,011 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:05:33,031 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:05:33,229 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:05:33,239 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:05:33,293 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:05:33,309 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:05:33,310 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:05:33 WrapperNode [2020-11-28 03:05:33,310 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:05:33,311 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:05:33,311 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:05:33,312 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:05:33,327 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:05:33" (1/1) ... [2020-11-28 03:05:33,328 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:05:33" (1/1) ... [2020-11-28 03:05:33,337 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:05:33" (1/1) ... [2020-11-28 03:05:33,338 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:05:33" (1/1) ... [2020-11-28 03:05:33,347 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:05:33" (1/1) ... [2020-11-28 03:05:33,354 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:05:33" (1/1) ... [2020-11-28 03:05:33,358 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:05:33" (1/1) ... [2020-11-28 03:05:33,363 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:05:33,364 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:05:33,364 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:05:33,364 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:05:33,370 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:05:33" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2683110d-88f8-4aa0-8fb2-cf3a5f1bd25c/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 [2020-11-28 03:05:33,453 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-28 03:05:33,453 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:05:33,453 INFO L138 BoogieDeclarations]: Found implementation of procedure bar [2020-11-28 03:05:33,454 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2020-11-28 03:05:33,454 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-28 03:05:33,454 INFO L130 BoogieDeclarations]: Found specification of procedure bar [2020-11-28 03:05:33,454 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-28 03:05:33,454 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2020-11-28 03:05:33,454 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:05:33,455 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 03:05:33,455 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 03:05:33,455 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-28 03:05:33,455 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-28 03:05:33,455 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:05:33,923 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:05:33,924 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-11-28 03:05:33,926 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:05:33 BoogieIcfgContainer [2020-11-28 03:05:33,926 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:05:33,928 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:05:33,928 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:05:33,933 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:05:33,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:05:32" (1/3) ... [2020-11-28 03:05:33,935 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b71c96d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:05:33, skipping insertion in model container [2020-11-28 03:05:33,936 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:05:33" (2/3) ... [2020-11-28 03:05:33,936 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b71c96d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:05:33, skipping insertion in model container [2020-11-28 03:05:33,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:05:33" (3/3) ... [2020-11-28 03:05:33,938 INFO L111 eAbstractionObserver]: Analyzing ICFG ArraysOfVariableLength2_-read.c [2020-11-28 03:05:33,953 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:05:33,960 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 11 error locations. [2020-11-28 03:05:33,974 INFO L253 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2020-11-28 03:05:33,999 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:05:33,999 INFO L378 AbstractCegarLoop]: Hoare is false [2020-11-28 03:05:33,999 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:05:33,999 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:05:34,000 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:05:34,000 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:05:34,000 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:05:34,000 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:05:34,019 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states. [2020-11-28 03:05:34,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 03:05:34,029 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:05:34,030 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:05:34,030 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]=== [2020-11-28 03:05:34,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:05:34,038 INFO L82 PathProgramCache]: Analyzing trace with hash -1403638412, now seen corresponding path program 1 times [2020-11-28 03:05:34,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:05:34,049 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847301955] [2020-11-28 03:05:34,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:05:34,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:05:34,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:05:34,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:05:34,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:05:34,256 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847301955] [2020-11-28 03:05:34,257 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:05:34,257 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:05:34,258 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90413729] [2020-11-28 03:05:34,263 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:05:34,264 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:05:34,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:05:34,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:05:34,284 INFO L87 Difference]: Start difference. First operand 52 states. Second operand 3 states. [2020-11-28 03:05:34,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:05:34,461 INFO L93 Difference]: Finished difference Result 52 states and 57 transitions. [2020-11-28 03:05:34,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:05:34,462 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-11-28 03:05:34,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:05:34,472 INFO L225 Difference]: With dead ends: 52 [2020-11-28 03:05:34,472 INFO L226 Difference]: Without dead ends: 49 [2020-11-28 03:05:34,493 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 [2020-11-28 03:05:34,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-11-28 03:05:34,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2020-11-28 03:05:34,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-11-28 03:05:34,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 54 transitions. [2020-11-28 03:05:34,553 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 54 transitions. Word has length 10 [2020-11-28 03:05:34,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:05:34,554 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 54 transitions. [2020-11-28 03:05:34,554 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:05:34,554 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 54 transitions. [2020-11-28 03:05:34,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 03:05:34,555 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:05:34,556 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:05:34,557 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 03:05:34,557 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]=== [2020-11-28 03:05:34,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:05:34,559 INFO L82 PathProgramCache]: Analyzing trace with hash -1403995904, now seen corresponding path program 1 times [2020-11-28 03:05:34,559 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:05:34,560 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146391602] [2020-11-28 03:05:34,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:05:34,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:05:34,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:05:34,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:05:34,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:05:34,676 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146391602] [2020-11-28 03:05:34,677 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:05:34,678 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:05:34,678 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337016026] [2020-11-28 03:05:34,679 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:05:34,680 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:05:34,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:05:34,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:05:34,684 INFO L87 Difference]: Start difference. First operand 49 states and 54 transitions. Second operand 4 states. [2020-11-28 03:05:34,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:05:34,972 INFO L93 Difference]: Finished difference Result 56 states and 61 transitions. [2020-11-28 03:05:34,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:05:34,973 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-11-28 03:05:34,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:05:34,976 INFO L225 Difference]: With dead ends: 56 [2020-11-28 03:05:34,976 INFO L226 Difference]: Without dead ends: 56 [2020-11-28 03:05:34,977 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 [2020-11-28 03:05:34,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-11-28 03:05:34,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 49. [2020-11-28 03:05:34,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-11-28 03:05:34,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2020-11-28 03:05:34,992 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 10 [2020-11-28 03:05:34,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:05:34,992 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2020-11-28 03:05:34,992 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:05:34,992 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2020-11-28 03:05:34,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 03:05:34,993 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:05:34,993 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:05:34,994 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 03:05:34,994 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]=== [2020-11-28 03:05:34,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:05:34,995 INFO L82 PathProgramCache]: Analyzing trace with hash -571487811, now seen corresponding path program 1 times [2020-11-28 03:05:34,995 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:05:34,996 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444187363] [2020-11-28 03:05:34,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:05:35,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:05:35,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:05:35,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:05:35,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:05:35,176 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444187363] [2020-11-28 03:05:35,176 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:05:35,176 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-28 03:05:35,177 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852630601] [2020-11-28 03:05:35,182 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 03:05:35,183 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:05:35,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 03:05:35,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:05:35,190 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand 6 states. [2020-11-28 03:05:35,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:05:35,481 INFO L93 Difference]: Finished difference Result 63 states and 69 transitions. [2020-11-28 03:05:35,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 03:05:35,483 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-11-28 03:05:35,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:05:35,485 INFO L225 Difference]: With dead ends: 63 [2020-11-28 03:05:35,485 INFO L226 Difference]: Without dead ends: 63 [2020-11-28 03:05:35,485 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-11-28 03:05:35,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-11-28 03:05:35,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 57. [2020-11-28 03:05:35,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-11-28 03:05:35,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 63 transitions. [2020-11-28 03:05:35,500 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 63 transitions. Word has length 11 [2020-11-28 03:05:35,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:05:35,501 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 63 transitions. [2020-11-28 03:05:35,501 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 03:05:35,501 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 63 transitions. [2020-11-28 03:05:35,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-28 03:05:35,503 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:05:35,503 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:05:35,503 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 03:05:35,503 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]=== [2020-11-28 03:05:35,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:05:35,505 INFO L82 PathProgramCache]: Analyzing trace with hash 57103265, now seen corresponding path program 1 times [2020-11-28 03:05:35,506 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:05:35,507 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695506034] [2020-11-28 03:05:35,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:05:35,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:05:35,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:05:35,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:05:35,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:05:35,643 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695506034] [2020-11-28 03:05:35,643 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:05:35,643 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 03:05:35,643 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223204752] [2020-11-28 03:05:35,644 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 03:05:35,644 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:05:35,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 03:05:35,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:05:35,649 INFO L87 Difference]: Start difference. First operand 57 states and 63 transitions. Second operand 6 states. [2020-11-28 03:05:35,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:05:35,885 INFO L93 Difference]: Finished difference Result 55 states and 61 transitions. [2020-11-28 03:05:35,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 03:05:35,886 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-11-28 03:05:35,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:05:35,889 INFO L225 Difference]: With dead ends: 55 [2020-11-28 03:05:35,890 INFO L226 Difference]: Without dead ends: 55 [2020-11-28 03:05:35,890 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 [2020-11-28 03:05:35,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-11-28 03:05:35,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-11-28 03:05:35,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-11-28 03:05:35,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 61 transitions. [2020-11-28 03:05:35,909 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 61 transitions. Word has length 14 [2020-11-28 03:05:35,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:05:35,910 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 61 transitions. [2020-11-28 03:05:35,910 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 03:05:35,910 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 61 transitions. [2020-11-28 03:05:35,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-28 03:05:35,912 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:05:35,913 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:05:35,913 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 03:05:35,913 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]=== [2020-11-28 03:05:35,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:05:35,914 INFO L82 PathProgramCache]: Analyzing trace with hash 57103266, now seen corresponding path program 1 times [2020-11-28 03:05:35,915 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:05:35,916 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047781486] [2020-11-28 03:05:35,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:05:35,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:05:35,962 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:05:36,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:05:36,005 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:05:36,043 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:05:36,043 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 03:05:36,044 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-28 03:05:36,076 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:05:36 BoogieIcfgContainer [2020-11-28 03:05:36,077 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:05:36,077 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:05:36,078 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:05:36,078 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:05:36,078 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:05:33" (3/4) ... [2020-11-28 03:05:36,081 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-28 03:05:36,129 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_2683110d-88f8-4aa0-8fb2-cf3a5f1bd25c/bin/uautomizer/witness.graphml [2020-11-28 03:05:36,129 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:05:36,132 INFO L168 Benchmark]: Toolchain (without parser) took 3144.07 ms. Allocated memory was 83.9 MB in the beginning and 100.7 MB in the end (delta: 16.8 MB). Free memory was 52.1 MB in the beginning and 56.8 MB in the end (delta: -4.7 MB). Peak memory consumption was 11.8 MB. Max. memory is 16.1 GB. [2020-11-28 03:05:36,132 INFO L168 Benchmark]: CDTParser took 0.56 ms. Allocated memory is still 83.9 MB. Free memory was 41.7 MB in the beginning and 41.7 MB in the end (delta: 75.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:05:36,133 INFO L168 Benchmark]: CACSL2BoogieTranslator took 317.89 ms. Allocated memory is still 83.9 MB. Free memory was 51.9 MB in the beginning and 61.2 MB in the end (delta: -9.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 03:05:36,134 INFO L168 Benchmark]: Boogie Preprocessor took 51.81 ms. Allocated memory is still 83.9 MB. Free memory was 61.2 MB in the beginning and 59.9 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:05:36,135 INFO L168 Benchmark]: RCFGBuilder took 562.28 ms. Allocated memory is still 83.9 MB. Free memory was 59.5 MB in the beginning and 41.7 MB in the end (delta: 17.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-11-28 03:05:36,136 INFO L168 Benchmark]: TraceAbstraction took 2148.82 ms. Allocated memory was 83.9 MB in the beginning and 100.7 MB in the end (delta: 16.8 MB). Free memory was 41.3 MB in the beginning and 58.0 MB in the end (delta: -16.7 MB). Peak memory consumption was 2.3 MB. Max. memory is 16.1 GB. [2020-11-28 03:05:36,137 INFO L168 Benchmark]: Witness Printer took 51.93 ms. Allocated memory is still 100.7 MB. Free memory was 58.0 MB in the beginning and 56.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:05:36,148 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.56 ms. Allocated memory is still 83.9 MB. Free memory was 41.7 MB in the beginning and 41.7 MB in the end (delta: 75.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 317.89 ms. Allocated memory is still 83.9 MB. Free memory was 51.9 MB in the beginning and 61.2 MB in the end (delta: -9.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 51.81 ms. Allocated memory is still 83.9 MB. Free memory was 61.2 MB in the beginning and 59.9 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 562.28 ms. Allocated memory is still 83.9 MB. Free memory was 59.5 MB in the beginning and 41.7 MB in the end (delta: 17.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2148.82 ms. Allocated memory was 83.9 MB in the beginning and 100.7 MB in the end (delta: 16.8 MB). Free memory was 41.3 MB in the beginning and 58.0 MB in the end (delta: -16.7 MB). Peak memory consumption was 2.3 MB. Max. memory is 16.1 GB. * Witness Printer took 51.93 ms. Allocated memory is still 100.7 MB. Free memory was 58.0 MB in the beginning and 56.8 MB in the end (delta: 1.3 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: 2.0s, 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, 0.2s 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...