./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength2_false-valid-deref-read.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0cd3be1d Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_6a4933ea-70ad-467b-a3bb-3dcf4322b128/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_6a4933ea-70ad-467b-a3bb-3dcf4322b128/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_6a4933ea-70ad-467b-a3bb-3dcf4322b128/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_6a4933ea-70ad-467b-a3bb-3dcf4322b128/bin-2019/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength2_false-valid-deref-read.c -s /tmp/vcloud-vcloud-master/worker/working_dir_6a4933ea-70ad-467b-a3bb-3dcf4322b128/bin-2019/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_6a4933ea-70ad-467b-a3bb-3dcf4322b128/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 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 0.1.23-0cd3be1 [2018-11-28 10:33:37,704 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 10:33:37,705 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 10:33:37,715 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 10:33:37,715 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 10:33:37,716 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 10:33:37,716 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 10:33:37,718 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 10:33:37,719 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 10:33:37,720 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 10:33:37,721 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 10:33:37,721 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 10:33:37,722 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 10:33:37,722 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 10:33:37,723 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 10:33:37,724 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 10:33:37,725 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 10:33:37,726 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 10:33:37,728 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 10:33:37,729 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 10:33:37,730 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 10:33:37,731 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 10:33:37,734 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 10:33:37,735 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 10:33:37,735 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 10:33:37,736 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 10:33:37,737 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 10:33:37,737 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 10:33:37,738 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 10:33:37,739 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 10:33:37,739 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 10:33:37,740 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 10:33:37,740 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 10:33:37,740 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 10:33:37,742 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 10:33:37,743 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 10:33:37,743 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_6a4933ea-70ad-467b-a3bb-3dcf4322b128/bin-2019/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2018-11-28 10:33:37,754 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 10:33:37,754 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 10:33:37,755 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 10:33:37,755 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 10:33:37,756 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 10:33:37,756 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 10:33:37,756 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 10:33:37,756 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 10:33:37,757 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 10:33:37,757 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-28 10:33:37,757 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 10:33:37,758 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 10:33:37,758 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 10:33:37,758 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-11-28 10:33:37,758 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-11-28 10:33:37,758 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-11-28 10:33:37,758 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 10:33:37,758 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 10:33:37,759 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 10:33:37,759 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 10:33:37,759 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 10:33:37,759 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 10:33:37,759 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 10:33:37,759 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 10:33:37,760 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 10:33:37,760 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 10:33:37,760 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 10:33:37,760 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 10:33:37,760 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_6a4933ea-70ad-467b-a3bb-3dcf4322b128/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 -> 639853f2f40cff84155fe09902eff2b5a20185f5 [2018-11-28 10:33:37,785 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 10:33:37,794 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 10:33:37,797 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 10:33:37,798 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 10:33:37,799 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 10:33:37,799 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_6a4933ea-70ad-467b-a3bb-3dcf4322b128/bin-2019/uautomizer/../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength2_false-valid-deref-read.c [2018-11-28 10:33:37,843 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_6a4933ea-70ad-467b-a3bb-3dcf4322b128/bin-2019/uautomizer/data/67d0ab101/d4b129a6ff3544c187986bedb16270b0/FLAG81c601c2f [2018-11-28 10:33:38,213 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 10:33:38,214 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_6a4933ea-70ad-467b-a3bb-3dcf4322b128/sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength2_false-valid-deref-read.c [2018-11-28 10:33:38,219 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_6a4933ea-70ad-467b-a3bb-3dcf4322b128/bin-2019/uautomizer/data/67d0ab101/d4b129a6ff3544c187986bedb16270b0/FLAG81c601c2f [2018-11-28 10:33:38,231 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_6a4933ea-70ad-467b-a3bb-3dcf4322b128/bin-2019/uautomizer/data/67d0ab101/d4b129a6ff3544c187986bedb16270b0 [2018-11-28 10:33:38,234 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 10:33:38,235 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-28 10:33:38,236 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 10:33:38,236 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 10:33:38,240 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 10:33:38,241 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 10:33:38" (1/1) ... [2018-11-28 10:33:38,243 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5274901a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:33:38, skipping insertion in model container [2018-11-28 10:33:38,243 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 10:33:38" (1/1) ... [2018-11-28 10:33:38,249 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 10:33:38,263 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 10:33:38,384 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 10:33:38,390 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 10:33:38,402 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 10:33:38,413 INFO L195 MainTranslator]: Completed translation [2018-11-28 10:33:38,413 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:33:38 WrapperNode [2018-11-28 10:33:38,413 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 10:33:38,414 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 10:33:38,414 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 10:33:38,414 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 10:33:38,426 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:33:38" (1/1) ... [2018-11-28 10:33:38,426 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:33:38" (1/1) ... [2018-11-28 10:33:38,431 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:33:38" (1/1) ... [2018-11-28 10:33:38,431 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:33:38" (1/1) ... [2018-11-28 10:33:38,437 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:33:38" (1/1) ... [2018-11-28 10:33:38,441 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:33:38" (1/1) ... [2018-11-28 10:33:38,443 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:33:38" (1/1) ... [2018-11-28 10:33:38,480 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 10:33:38,480 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 10:33:38,480 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 10:33:38,480 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 10:33:38,481 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:33:38" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6a4933ea-70ad-467b-a3bb-3dcf4322b128/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 [2018-11-28 10:33:38,517 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 10:33:38,517 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 10:33:38,517 INFO L138 BoogieDeclarations]: Found implementation of procedure bar [2018-11-28 10:33:38,517 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2018-11-28 10:33:38,517 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 10:33:38,517 INFO L130 BoogieDeclarations]: Found specification of procedure bar [2018-11-28 10:33:38,517 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-28 10:33:38,517 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2018-11-28 10:33:38,517 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-28 10:33:38,518 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-28 10:33:38,518 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-28 10:33:38,518 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 10:33:38,518 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 10:33:38,518 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 10:33:38,706 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 10:33:38,706 INFO L280 CfgBuilder]: Removed 4 assue(true) statements. [2018-11-28 10:33:38,706 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 10:33:38 BoogieIcfgContainer [2018-11-28 10:33:38,706 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 10:33:38,707 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 10:33:38,707 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 10:33:38,709 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 10:33:38,710 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 10:33:38" (1/3) ... [2018-11-28 10:33:38,710 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@118684d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 10:33:38, skipping insertion in model container [2018-11-28 10:33:38,710 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:33:38" (2/3) ... [2018-11-28 10:33:38,711 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@118684d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 10:33:38, skipping insertion in model container [2018-11-28 10:33:38,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 10:33:38" (3/3) ... [2018-11-28 10:33:38,712 INFO L112 eAbstractionObserver]: Analyzing ICFG ArraysOfVariableLength2_false-valid-deref-read.c [2018-11-28 10:33:38,720 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 10:33:38,726 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 11 error locations. [2018-11-28 10:33:38,739 INFO L257 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2018-11-28 10:33:38,758 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 10:33:38,758 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 10:33:38,758 INFO L383 AbstractCegarLoop]: Hoare is false [2018-11-28 10:33:38,758 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 10:33:38,759 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 10:33:38,759 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 10:33:38,759 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 10:33:38,759 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 10:33:38,759 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 10:33:38,769 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states. [2018-11-28 10:33:38,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-28 10:33:38,774 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 10:33:38,775 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 10:33:38,776 INFO L423 AbstractCegarLoop]: === Iteration 1 === [barErr1REQUIRES_VIOLATION, barErr0REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr3REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2018-11-28 10:33:38,780 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 10:33:38,780 INFO L82 PathProgramCache]: Analyzing trace with hash -1403638412, now seen corresponding path program 1 times [2018-11-28 10:33:38,781 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 10:33:38,782 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 10:33:38,811 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 10:33:38,811 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 10:33:38,811 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 10:33:38,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 10:33:38,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 10:33:38,861 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 10:33:38,861 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 10:33:38,863 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-28 10:33:38,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-28 10:33:38,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-28 10:33:38,873 INFO L87 Difference]: Start difference. First operand 52 states. Second operand 2 states. [2018-11-28 10:33:38,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 10:33:38,884 INFO L93 Difference]: Finished difference Result 52 states and 57 transitions. [2018-11-28 10:33:38,884 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-28 10:33:38,885 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-11-28 10:33:38,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 10:33:38,892 INFO L225 Difference]: With dead ends: 52 [2018-11-28 10:33:38,893 INFO L226 Difference]: Without dead ends: 49 [2018-11-28 10:33:38,894 INFO L631 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 [2018-11-28 10:33:38,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-11-28 10:33:38,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2018-11-28 10:33:38,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-11-28 10:33:38,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 54 transitions. [2018-11-28 10:33:38,920 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 54 transitions. Word has length 10 [2018-11-28 10:33:38,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 10:33:38,921 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 54 transitions. [2018-11-28 10:33:38,921 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-28 10:33:38,921 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 54 transitions. [2018-11-28 10:33:38,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-28 10:33:38,921 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 10:33:38,921 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 10:33:38,921 INFO L423 AbstractCegarLoop]: === Iteration 2 === [barErr1REQUIRES_VIOLATION, barErr0REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr3REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2018-11-28 10:33:38,922 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 10:33:38,922 INFO L82 PathProgramCache]: Analyzing trace with hash -1403995904, now seen corresponding path program 1 times [2018-11-28 10:33:38,922 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 10:33:38,922 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 10:33:38,922 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 10:33:38,923 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 10:33:38,923 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 10:33:38,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 10:33:38,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 10:33:38,962 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 10:33:38,962 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-28 10:33:38,963 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-28 10:33:38,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-28 10:33:38,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 10:33:38,964 INFO L87 Difference]: Start difference. First operand 49 states and 54 transitions. Second operand 3 states. [2018-11-28 10:33:39,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 10:33:39,012 INFO L93 Difference]: Finished difference Result 56 states and 61 transitions. [2018-11-28 10:33:39,012 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 10:33:39,012 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-11-28 10:33:39,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 10:33:39,014 INFO L225 Difference]: With dead ends: 56 [2018-11-28 10:33:39,014 INFO L226 Difference]: Without dead ends: 56 [2018-11-28 10:33:39,015 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 10:33:39,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-11-28 10:33:39,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 49. [2018-11-28 10:33:39,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-11-28 10:33:39,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2018-11-28 10:33:39,022 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 10 [2018-11-28 10:33:39,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 10:33:39,022 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2018-11-28 10:33:39,022 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-28 10:33:39,022 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2018-11-28 10:33:39,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-28 10:33:39,023 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 10:33:39,023 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 10:33:39,023 INFO L423 AbstractCegarLoop]: === Iteration 3 === [barErr1REQUIRES_VIOLATION, barErr0REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr3REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2018-11-28 10:33:39,023 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 10:33:39,023 INFO L82 PathProgramCache]: Analyzing trace with hash -571487811, now seen corresponding path program 1 times [2018-11-28 10:33:39,023 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 10:33:39,024 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 10:33:39,024 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 10:33:39,024 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 10:33:39,024 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 10:33:39,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 10:33:39,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 10:33:39,094 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 10:33:39,094 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-28 10:33:39,095 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-28 10:33:39,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-28 10:33:39,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-28 10:33:39,095 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand 5 states. [2018-11-28 10:33:39,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 10:33:39,190 INFO L93 Difference]: Finished difference Result 63 states and 69 transitions. [2018-11-28 10:33:39,190 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-28 10:33:39,190 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2018-11-28 10:33:39,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 10:33:39,191 INFO L225 Difference]: With dead ends: 63 [2018-11-28 10:33:39,191 INFO L226 Difference]: Without dead ends: 63 [2018-11-28 10:33:39,192 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-28 10:33:39,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-11-28 10:33:39,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 57. [2018-11-28 10:33:39,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-11-28 10:33:39,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 63 transitions. [2018-11-28 10:33:39,196 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 63 transitions. Word has length 11 [2018-11-28 10:33:39,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 10:33:39,196 INFO L480 AbstractCegarLoop]: Abstraction has 57 states and 63 transitions. [2018-11-28 10:33:39,196 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-28 10:33:39,196 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 63 transitions. [2018-11-28 10:33:39,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-28 10:33:39,197 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 10:33:39,197 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 10:33:39,197 INFO L423 AbstractCegarLoop]: === Iteration 4 === [barErr1REQUIRES_VIOLATION, barErr0REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr3REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2018-11-28 10:33:39,197 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 10:33:39,197 INFO L82 PathProgramCache]: Analyzing trace with hash 57103265, now seen corresponding path program 1 times [2018-11-28 10:33:39,198 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 10:33:39,198 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 10:33:39,198 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 10:33:39,198 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 10:33:39,198 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 10:33:39,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 10:33:39,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 10:33:39,245 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 10:33:39,245 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 10:33:39,245 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-28 10:33:39,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-28 10:33:39,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-28 10:33:39,246 INFO L87 Difference]: Start difference. First operand 57 states and 63 transitions. Second operand 5 states. [2018-11-28 10:33:39,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 10:33:39,305 INFO L93 Difference]: Finished difference Result 55 states and 61 transitions. [2018-11-28 10:33:39,305 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-28 10:33:39,305 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2018-11-28 10:33:39,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 10:33:39,307 INFO L225 Difference]: With dead ends: 55 [2018-11-28 10:33:39,307 INFO L226 Difference]: Without dead ends: 55 [2018-11-28 10:33:39,308 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-28 10:33:39,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-11-28 10:33:39,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2018-11-28 10:33:39,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-11-28 10:33:39,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 61 transitions. [2018-11-28 10:33:39,313 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 61 transitions. Word has length 14 [2018-11-28 10:33:39,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 10:33:39,313 INFO L480 AbstractCegarLoop]: Abstraction has 55 states and 61 transitions. [2018-11-28 10:33:39,313 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-28 10:33:39,313 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 61 transitions. [2018-11-28 10:33:39,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-28 10:33:39,314 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 10:33:39,314 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 10:33:39,314 INFO L423 AbstractCegarLoop]: === Iteration 5 === [barErr1REQUIRES_VIOLATION, barErr0REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr3REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2018-11-28 10:33:39,314 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 10:33:39,314 INFO L82 PathProgramCache]: Analyzing trace with hash 57103266, now seen corresponding path program 1 times [2018-11-28 10:33:39,315 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 10:33:39,315 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 10:33:39,315 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 10:33:39,315 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 10:33:39,316 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 10:33:39,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 10:33:39,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 10:33:39,358 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-11-28 10:33:39,374 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 10:33:39 BoogieIcfgContainer [2018-11-28 10:33:39,374 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 10:33:39,374 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 10:33:39,374 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 10:33:39,375 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 10:33:39,375 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 10:33:38" (3/4) ... [2018-11-28 10:33:39,377 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-28 10:33:39,408 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_6a4933ea-70ad-467b-a3bb-3dcf4322b128/bin-2019/uautomizer/witness.graphml [2018-11-28 10:33:39,408 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 10:33:39,409 INFO L168 Benchmark]: Toolchain (without parser) took 1174.46 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 122.7 MB). Free memory was 958.7 MB in the beginning and 1.0 GB in the end (delta: -64.2 MB). Peak memory consumption was 58.5 MB. Max. memory is 11.5 GB. [2018-11-28 10:33:39,410 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 985.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 10:33:39,410 INFO L168 Benchmark]: CACSL2BoogieTranslator took 177.42 ms. Allocated memory is still 1.0 GB. Free memory was 958.7 MB in the beginning and 948.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-28 10:33:39,410 INFO L168 Benchmark]: Boogie Preprocessor took 65.88 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 122.7 MB). Free memory was 948.0 MB in the beginning and 1.1 GB in the end (delta: -179.9 MB). Peak memory consumption was 15.9 MB. Max. memory is 11.5 GB. [2018-11-28 10:33:39,411 INFO L168 Benchmark]: RCFGBuilder took 226.35 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: 31.5 MB). Peak memory consumption was 31.5 MB. Max. memory is 11.5 GB. [2018-11-28 10:33:39,411 INFO L168 Benchmark]: TraceAbstraction took 667.08 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 11.5 GB. [2018-11-28 10:33:39,412 INFO L168 Benchmark]: Witness Printer took 34.16 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. [2018-11-28 10:33:39,415 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 985.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 177.42 ms. Allocated memory is still 1.0 GB. Free memory was 958.7 MB in the beginning and 948.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 65.88 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 122.7 MB). Free memory was 948.0 MB in the beginning and 1.1 GB in the end (delta: -179.9 MB). Peak memory consumption was 15.9 MB. Max. memory is 11.5 GB. * RCFGBuilder took 226.35 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: 31.5 MB). Peak memory consumption was 31.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 667.08 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 11.5 GB. * Witness Printer took 34.16 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 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: 14]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L32] int i, b[100]; [L33] i = 0 VAL [b={403:0}, i=0] [L33] COND TRUE i < 100 VAL [b={403:0}, i=0] [L34] CALL foo(i, b, i) VAL [\old(n)=0, \old(size)=0, b={403:0}] [L21] int a[n], i; [L22] i = 0 VAL [\old(n)=0, \old(size)=0, a={402:0}, b={403:0}, b={403:0}, i=0, n=0, size=0] [L22] COND FALSE !(i < size) VAL [\old(n)=0, \old(size)=0, a={402:0}, b={403:0}, b={403:0}, i=0, n=0, size=0] [L25] CALL bar(a, size + 1) VAL [\old(size)=1, b={402:0}] [L12] int res = 0, i; [L13] i = 0 VAL [\old(size)=1, b={402:0}, b={402:0}, i=0, res=0, size=1] [L13] COND TRUE i < size VAL [\old(size)=1, b={402:0}, b={402:0}, i=0, res=0, size=1] [L14] b[i] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 52 locations, 11 error locations. UNSAFE Result, 0.6s OverallTime, 5 OverallIterations, 1 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 181 SDtfs, 63 SDslu, 217 SDs, 0 SdLazy, 126 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s 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 AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 13 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 59 NumberOfCodeBlocks, 59 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 41 ConstructedInterpolants, 0 QuantifiedInterpolants, 829 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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...