./Ultimate.py --spec ../../sv-benchmarks/c/MemSafety.prp --file ../../sv-benchmarks/c/memsafety-ext3/scopes5_false-valid-deref.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_b8acf981-ea1b-4bef-9dc1-5dadfea7ed5c/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_b8acf981-ea1b-4bef-9dc1-5dadfea7ed5c/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_b8acf981-ea1b-4bef-9dc1-5dadfea7ed5c/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_b8acf981-ea1b-4bef-9dc1-5dadfea7ed5c/bin-2019/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-ext3/scopes5_false-valid-deref.c -s /tmp/vcloud-vcloud-master/worker/working_dir_b8acf981-ea1b-4bef-9dc1-5dadfea7ed5c/bin-2019/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_b8acf981-ea1b-4bef-9dc1-5dadfea7ed5c/bin-2019/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 767ec81abc1d53fd457a174594199b33ee40a3be ................................................................................................................................................................................................................................................................... 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 0.1.23-1dbac8b [2018-10-27 04:45:34,204 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 04:45:34,205 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 04:45:34,215 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 04:45:34,216 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 04:45:34,217 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 04:45:34,218 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 04:45:34,220 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 04:45:34,221 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 04:45:34,222 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 04:45:34,223 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 04:45:34,223 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 04:45:34,224 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 04:45:34,225 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 04:45:34,227 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 04:45:34,227 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 04:45:34,228 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 04:45:34,230 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 04:45:34,232 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 04:45:34,233 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 04:45:34,234 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 04:45:34,235 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 04:45:34,238 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 04:45:34,238 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 04:45:34,239 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 04:45:34,239 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 04:45:34,240 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 04:45:34,241 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 04:45:34,243 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 04:45:34,244 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 04:45:34,244 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 04:45:34,245 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 04:45:34,245 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 04:45:34,245 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 04:45:34,247 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 04:45:34,248 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 04:45:34,248 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_b8acf981-ea1b-4bef-9dc1-5dadfea7ed5c/bin-2019/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2018-10-27 04:45:34,262 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 04:45:34,262 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 04:45:34,263 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-27 04:45:34,263 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-27 04:45:34,264 INFO L133 SettingsManager]: * Use SBE=true [2018-10-27 04:45:34,264 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 04:45:34,264 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-27 04:45:34,264 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-10-27 04:45:34,264 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 04:45:34,265 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-27 04:45:34,265 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 04:45:34,265 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-10-27 04:45:34,265 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-10-27 04:45:34,268 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-10-27 04:45:34,269 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 04:45:34,269 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-27 04:45:34,269 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 04:45:34,269 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 04:45:34,269 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 04:45:34,270 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 04:45:34,270 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 04:45:34,270 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 04:45:34,270 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 04:45:34,270 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-27 04:45:34,270 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 04:45:34,271 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in 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/working_dir_b8acf981-ea1b-4bef-9dc1-5dadfea7ed5c/bin-2019/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 -> 767ec81abc1d53fd457a174594199b33ee40a3be [2018-10-27 04:45:34,304 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 04:45:34,315 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 04:45:34,318 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 04:45:34,319 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 04:45:34,319 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 04:45:34,320 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_b8acf981-ea1b-4bef-9dc1-5dadfea7ed5c/bin-2019/uautomizer/../../sv-benchmarks/c/memsafety-ext3/scopes5_false-valid-deref.c [2018-10-27 04:45:34,370 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b8acf981-ea1b-4bef-9dc1-5dadfea7ed5c/bin-2019/uautomizer/data/199c5e70c/b4a3c8414f724ddb85d13ec6d0ccc674/FLAG0508b6e9e [2018-10-27 04:45:34,757 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 04:45:34,757 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_b8acf981-ea1b-4bef-9dc1-5dadfea7ed5c/sv-benchmarks/c/memsafety-ext3/scopes5_false-valid-deref.c [2018-10-27 04:45:34,763 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b8acf981-ea1b-4bef-9dc1-5dadfea7ed5c/bin-2019/uautomizer/data/199c5e70c/b4a3c8414f724ddb85d13ec6d0ccc674/FLAG0508b6e9e [2018-10-27 04:45:34,776 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_b8acf981-ea1b-4bef-9dc1-5dadfea7ed5c/bin-2019/uautomizer/data/199c5e70c/b4a3c8414f724ddb85d13ec6d0ccc674 [2018-10-27 04:45:34,779 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 04:45:34,780 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 04:45:34,782 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 04:45:34,782 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 04:45:34,786 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 04:45:34,787 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:45:34" (1/1) ... [2018-10-27 04:45:34,790 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7949ef93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:45:34, skipping insertion in model container [2018-10-27 04:45:34,790 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:45:34" (1/1) ... [2018-10-27 04:45:34,801 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 04:45:34,813 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 04:45:34,936 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 04:45:34,947 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 04:45:34,959 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 04:45:34,974 INFO L193 MainTranslator]: Completed translation [2018-10-27 04:45:34,975 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:45:34 WrapperNode [2018-10-27 04:45:34,975 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 04:45:34,976 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 04:45:34,976 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 04:45:34,976 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 04:45:34,988 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:45:34" (1/1) ... [2018-10-27 04:45:34,989 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:45:34" (1/1) ... [2018-10-27 04:45:34,996 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:45:34" (1/1) ... [2018-10-27 04:45:34,996 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:45:34" (1/1) ... [2018-10-27 04:45:35,001 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:45:34" (1/1) ... [2018-10-27 04:45:35,002 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:45:34" (1/1) ... [2018-10-27 04:45:35,003 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:45:34" (1/1) ... [2018-10-27 04:45:35,005 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 04:45:35,005 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 04:45:35,005 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 04:45:35,006 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 04:45:35,007 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:45:34" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b8acf981-ea1b-4bef-9dc1-5dadfea7ed5c/bin-2019/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 [2018-10-27 04:45:35,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 04:45:35,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 04:45:35,117 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 04:45:35,118 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 04:45:35,118 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-10-27 04:45:35,118 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-10-27 04:45:35,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-10-27 04:45:35,118 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 04:45:35,118 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 04:45:35,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-10-27 04:45:35,119 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-10-27 04:45:35,512 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 04:45:35,513 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:45:35 BoogieIcfgContainer [2018-10-27 04:45:35,513 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 04:45:35,514 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 04:45:35,514 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 04:45:35,518 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 04:45:35,518 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 04:45:34" (1/3) ... [2018-10-27 04:45:35,519 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a9cc788 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:45:35, skipping insertion in model container [2018-10-27 04:45:35,519 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:45:34" (2/3) ... [2018-10-27 04:45:35,520 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a9cc788 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:45:35, skipping insertion in model container [2018-10-27 04:45:35,520 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:45:35" (3/3) ... [2018-10-27 04:45:35,523 INFO L112 eAbstractionObserver]: Analyzing ICFG scopes5_false-valid-deref.c [2018-10-27 04:45:35,533 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 04:45:35,543 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-10-27 04:45:35,559 INFO L257 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2018-10-27 04:45:35,591 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-27 04:45:35,592 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 04:45:35,592 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-27 04:45:35,592 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 04:45:35,592 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 04:45:35,592 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 04:45:35,593 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 04:45:35,594 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 04:45:35,594 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 04:45:35,613 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2018-10-27 04:45:35,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-10-27 04:45:35,630 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 04:45:35,631 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 04:45:35,634 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-10-27 04:45:35,641 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 04:45:35,643 INFO L82 PathProgramCache]: Analyzing trace with hash 481461266, now seen corresponding path program 1 times [2018-10-27 04:45:35,646 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 04:45:35,646 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 04:45:35,704 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 04:45:35,704 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 04:45:35,704 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 04:45:35,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 04:45:35,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 04:45:35,792 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 04:45:35,792 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-27 04:45:35,796 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-27 04:45:35,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-27 04:45:35,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-27 04:45:35,815 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2018-10-27 04:45:35,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 04:45:35,838 INFO L93 Difference]: Finished difference Result 19 states and 18 transitions. [2018-10-27 04:45:35,838 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-27 04:45:35,840 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2018-10-27 04:45:35,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 04:45:35,852 INFO L225 Difference]: With dead ends: 19 [2018-10-27 04:45:35,853 INFO L226 Difference]: Without dead ends: 16 [2018-10-27 04:45:35,855 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-27 04:45:35,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-10-27 04:45:35,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-10-27 04:45:35,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-10-27 04:45:35,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 15 transitions. [2018-10-27 04:45:35,894 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 15 transitions. Word has length 8 [2018-10-27 04:45:35,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 04:45:35,895 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 15 transitions. [2018-10-27 04:45:35,896 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-27 04:45:35,896 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 15 transitions. [2018-10-27 04:45:35,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-10-27 04:45:35,897 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 04:45:35,897 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 04:45:35,898 INFO L424 AbstractCegarLoop]: === Iteration 2 === [mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-10-27 04:45:35,898 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 04:45:35,900 INFO L82 PathProgramCache]: Analyzing trace with hash -1373302314, now seen corresponding path program 1 times [2018-10-27 04:45:35,900 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 04:45:35,900 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 04:45:35,901 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 04:45:35,901 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 04:45:35,901 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 04:45:35,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 04:45:35,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 04:45:35,971 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-10-27 04:45:35,994 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 04:45:35 BoogieIcfgContainer [2018-10-27 04:45:35,994 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 04:45:35,994 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-27 04:45:35,995 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-27 04:45:35,995 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-27 04:45:35,995 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:45:35" (3/4) ... [2018-10-27 04:45:35,999 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-10-27 04:45:36,042 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_b8acf981-ea1b-4bef-9dc1-5dadfea7ed5c/bin-2019/uautomizer/witness.graphml [2018-10-27 04:45:36,042 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-27 04:45:36,043 INFO L168 Benchmark]: Toolchain (without parser) took 1263.45 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 178.3 MB). Free memory was 959.3 MB in the beginning and 1.1 GB in the end (delta: -171.8 MB). Peak memory consumption was 6.4 MB. Max. memory is 11.5 GB. [2018-10-27 04:45:36,045 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 04:45:36,045 INFO L168 Benchmark]: CACSL2BoogieTranslator took 193.67 ms. Allocated memory is still 1.0 GB. Free memory was 959.3 MB in the beginning and 948.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-10-27 04:45:36,047 INFO L168 Benchmark]: Boogie Preprocessor took 28.83 ms. Allocated memory is still 1.0 GB. Free memory is still 948.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 04:45:36,047 INFO L168 Benchmark]: RCFGBuilder took 507.85 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 178.3 MB). Free memory was 948.5 MB in the beginning and 1.2 GB in the end (delta: -214.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. [2018-10-27 04:45:36,048 INFO L168 Benchmark]: TraceAbstraction took 479.93 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 28.5 MB). Peak memory consumption was 28.5 MB. Max. memory is 11.5 GB. [2018-10-27 04:45:36,049 INFO L168 Benchmark]: Witness Printer took 47.73 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. [2018-10-27 04:45:36,053 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 193.67 ms. Allocated memory is still 1.0 GB. Free memory was 959.3 MB in the beginning and 948.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 28.83 ms. Allocated memory is still 1.0 GB. Free memory is still 948.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 507.85 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 178.3 MB). Free memory was 948.5 MB in the beginning and 1.2 GB in the end (delta: -214.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 479.93 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 28.5 MB). Peak memory consumption was 28.5 MB. Max. memory is 11.5 GB. * Witness Printer took 47.73 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 7]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L2] int* p; [L3] COND TRUE 1 [L4] FCALL int a[10]; VAL [a={41:0}] [L5] p = a VAL [a={41:0}, p={41:0}] [L7] FCALL p[0] = 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 19 locations, 3 error locations. UNSAFE Result, 0.4s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 18 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 49 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...