./Ultimate.py --spec ../../sv-benchmarks/c/MemSafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength2_false-valid-deref-write.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_fb72cf77-59ac-42c0-8385-00c5d8393c2e/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_fb72cf77-59ac-42c0-8385-00c5d8393c2e/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_fb72cf77-59ac-42c0-8385-00c5d8393c2e/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_fb72cf77-59ac-42c0-8385-00c5d8393c2e/bin-2019/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength2_false-valid-deref-write.c -s /tmp/vcloud-vcloud-master/worker/working_dir_fb72cf77-59ac-42c0-8385-00c5d8393c2e/bin-2019/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_fb72cf77-59ac-42c0-8385-00c5d8393c2e/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 a6853fb9e064ccfef5e54a8bac94eb86beeed80f ................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 0.1.23-5842f4b [2018-11-18 09:03:51,301 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 09:03:51,302 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 09:03:51,309 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 09:03:51,309 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 09:03:51,310 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 09:03:51,310 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 09:03:51,311 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 09:03:51,312 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 09:03:51,313 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 09:03:51,314 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 09:03:51,314 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 09:03:51,314 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 09:03:51,315 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 09:03:51,316 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 09:03:51,316 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 09:03:51,317 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 09:03:51,318 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 09:03:51,319 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 09:03:51,320 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 09:03:51,321 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 09:03:51,322 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 09:03:51,323 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 09:03:51,323 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 09:03:51,323 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 09:03:51,324 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 09:03:51,324 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 09:03:51,325 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 09:03:51,325 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 09:03:51,326 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 09:03:51,326 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 09:03:51,327 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 09:03:51,327 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 09:03:51,327 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 09:03:51,328 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 09:03:51,328 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 09:03:51,328 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_fb72cf77-59ac-42c0-8385-00c5d8393c2e/bin-2019/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2018-11-18 09:03:51,337 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 09:03:51,337 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 09:03:51,338 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 09:03:51,338 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 09:03:51,338 INFO L133 SettingsManager]: * Use SBE=true [2018-11-18 09:03:51,339 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 09:03:51,339 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 09:03:51,339 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-18 09:03:51,339 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 09:03:51,339 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 09:03:51,339 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 09:03:51,339 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-11-18 09:03:51,340 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-11-18 09:03:51,340 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-11-18 09:03:51,340 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 09:03:51,340 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 09:03:51,340 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 09:03:51,340 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 09:03:51,340 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 09:03:51,340 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 09:03:51,341 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 09:03:51,341 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 09:03:51,341 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 09:03:51,341 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 09:03:51,341 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-18 09:03:51,341 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 09:03:51,341 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_fb72cf77-59ac-42c0-8385-00c5d8393c2e/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 -> a6853fb9e064ccfef5e54a8bac94eb86beeed80f [2018-11-18 09:03:51,363 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 09:03:51,372 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 09:03:51,374 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 09:03:51,374 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 09:03:51,375 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 09:03:51,375 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_fb72cf77-59ac-42c0-8385-00c5d8393c2e/bin-2019/uautomizer/../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength2_false-valid-deref-write.c [2018-11-18 09:03:51,409 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_fb72cf77-59ac-42c0-8385-00c5d8393c2e/bin-2019/uautomizer/data/615ad6abf/d5dd3877ab5b4112a45c9a55583d046f/FLAGab34bc6b1 [2018-11-18 09:03:51,809 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 09:03:51,810 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_fb72cf77-59ac-42c0-8385-00c5d8393c2e/sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength2_false-valid-deref-write.c [2018-11-18 09:03:51,815 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_fb72cf77-59ac-42c0-8385-00c5d8393c2e/bin-2019/uautomizer/data/615ad6abf/d5dd3877ab5b4112a45c9a55583d046f/FLAGab34bc6b1 [2018-11-18 09:03:51,825 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_fb72cf77-59ac-42c0-8385-00c5d8393c2e/bin-2019/uautomizer/data/615ad6abf/d5dd3877ab5b4112a45c9a55583d046f [2018-11-18 09:03:51,827 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 09:03:51,828 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-18 09:03:51,829 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 09:03:51,829 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 09:03:51,831 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 09:03:51,831 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:03:51" (1/1) ... [2018-11-18 09:03:51,833 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50e32060 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:03:51, skipping insertion in model container [2018-11-18 09:03:51,834 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:03:51" (1/1) ... [2018-11-18 09:03:51,842 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 09:03:51,855 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 09:03:51,957 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 09:03:51,962 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 09:03:51,975 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 09:03:51,985 INFO L195 MainTranslator]: Completed translation [2018-11-18 09:03:51,985 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:03:51 WrapperNode [2018-11-18 09:03:51,985 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 09:03:51,985 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 09:03:51,985 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 09:03:51,985 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 09:03:51,993 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:03:51" (1/1) ... [2018-11-18 09:03:51,993 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:03:51" (1/1) ... [2018-11-18 09:03:51,998 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:03:51" (1/1) ... [2018-11-18 09:03:51,998 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:03:51" (1/1) ... [2018-11-18 09:03:52,002 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:03:51" (1/1) ... [2018-11-18 09:03:52,005 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:03:51" (1/1) ... [2018-11-18 09:03:52,006 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:03:51" (1/1) ... [2018-11-18 09:03:52,007 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 09:03:52,007 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 09:03:52,007 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 09:03:52,007 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 09:03:52,008 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:03:51" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_fb72cf77-59ac-42c0-8385-00c5d8393c2e/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 [2018-11-18 09:03:52,085 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 09:03:52,085 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 09:03:52,085 INFO L138 BoogieDeclarations]: Found implementation of procedure bar [2018-11-18 09:03:52,085 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2018-11-18 09:03:52,086 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 09:03:52,086 INFO L130 BoogieDeclarations]: Found specification of procedure bar [2018-11-18 09:03:52,086 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-18 09:03:52,086 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2018-11-18 09:03:52,086 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 09:03:52,086 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-18 09:03:52,086 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-18 09:03:52,086 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 09:03:52,086 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 09:03:52,086 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 09:03:52,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-11-18 09:03:52,263 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 09:03:52,263 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:03:52 BoogieIcfgContainer [2018-11-18 09:03:52,263 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 09:03:52,264 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 09:03:52,264 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 09:03:52,266 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 09:03:52,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 09:03:51" (1/3) ... [2018-11-18 09:03:52,267 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29ce4c05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:03:52, skipping insertion in model container [2018-11-18 09:03:52,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:03:51" (2/3) ... [2018-11-18 09:03:52,268 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29ce4c05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:03:52, skipping insertion in model container [2018-11-18 09:03:52,268 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:03:52" (3/3) ... [2018-11-18 09:03:52,269 INFO L112 eAbstractionObserver]: Analyzing ICFG ArraysOfVariableLength2_false-valid-deref-write.c [2018-11-18 09:03:52,274 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 09:03:52,279 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 11 error locations. [2018-11-18 09:03:52,287 INFO L257 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2018-11-18 09:03:52,303 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 09:03:52,303 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 09:03:52,303 INFO L383 AbstractCegarLoop]: Hoare is false [2018-11-18 09:03:52,303 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 09:03:52,304 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 09:03:52,304 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 09:03:52,304 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 09:03:52,304 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 09:03:52,304 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 09:03:52,315 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states. [2018-11-18 09:03:52,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-18 09:03:52,322 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:03:52,323 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:03:52,324 INFO L423 AbstractCegarLoop]: === Iteration 1 === [barErr0REQUIRES_VIOLATION, barErr1REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr3REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-11-18 09:03:52,327 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:03:52,327 INFO L82 PathProgramCache]: Analyzing trace with hash 826482274, now seen corresponding path program 1 times [2018-11-18 09:03:52,328 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:03:52,329 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:03:52,357 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:03:52,357 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:03:52,358 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:03:52,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:03:52,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 09:03:52,401 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 09:03:52,401 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 09:03:52,403 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-18 09:03:52,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 09:03:52,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 09:03:52,413 INFO L87 Difference]: Start difference. First operand 56 states. Second operand 2 states. [2018-11-18 09:03:52,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:03:52,424 INFO L93 Difference]: Finished difference Result 56 states and 61 transitions. [2018-11-18 09:03:52,424 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 09:03:52,425 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2018-11-18 09:03:52,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:03:52,431 INFO L225 Difference]: With dead ends: 56 [2018-11-18 09:03:52,431 INFO L226 Difference]: Without dead ends: 53 [2018-11-18 09:03:52,432 INFO L604 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 [2018-11-18 09:03:52,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-11-18 09:03:52,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2018-11-18 09:03:52,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-11-18 09:03:52,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 58 transitions. [2018-11-18 09:03:52,453 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 58 transitions. Word has length 11 [2018-11-18 09:03:52,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:03:52,453 INFO L480 AbstractCegarLoop]: Abstraction has 53 states and 58 transitions. [2018-11-18 09:03:52,453 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-18 09:03:52,454 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 58 transitions. [2018-11-18 09:03:52,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-11-18 09:03:52,454 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:03:52,454 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:03:52,454 INFO L423 AbstractCegarLoop]: === Iteration 2 === [barErr0REQUIRES_VIOLATION, barErr1REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr3REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-11-18 09:03:52,454 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:03:52,455 INFO L82 PathProgramCache]: Analyzing trace with hash -1066732673, now seen corresponding path program 1 times [2018-11-18 09:03:52,455 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:03:52,455 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:03:52,455 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:03:52,455 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:03:52,456 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:03:52,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:03:52,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 09:03:52,558 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 09:03:52,559 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 09:03:52,560 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-18 09:03:52,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-18 09:03:52,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-18 09:03:52,560 INFO L87 Difference]: Start difference. First operand 53 states and 58 transitions. Second operand 5 states. [2018-11-18 09:03:52,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:03:52,691 INFO L93 Difference]: Finished difference Result 51 states and 56 transitions. [2018-11-18 09:03:52,692 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-18 09:03:52,692 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2018-11-18 09:03:52,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:03:52,693 INFO L225 Difference]: With dead ends: 51 [2018-11-18 09:03:52,693 INFO L226 Difference]: Without dead ends: 51 [2018-11-18 09:03:52,694 INFO L604 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 [2018-11-18 09:03:52,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-11-18 09:03:52,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-11-18 09:03:52,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-11-18 09:03:52,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 56 transitions. [2018-11-18 09:03:52,699 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 56 transitions. Word has length 13 [2018-11-18 09:03:52,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:03:52,699 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 56 transitions. [2018-11-18 09:03:52,699 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-18 09:03:52,699 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 56 transitions. [2018-11-18 09:03:52,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-11-18 09:03:52,700 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:03:52,700 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:03:52,701 INFO L423 AbstractCegarLoop]: === Iteration 3 === [barErr0REQUIRES_VIOLATION, barErr1REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr3REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-11-18 09:03:52,701 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:03:52,701 INFO L82 PathProgramCache]: Analyzing trace with hash -1066732672, now seen corresponding path program 1 times [2018-11-18 09:03:52,701 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:03:52,701 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:03:52,702 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:03:52,702 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:03:52,702 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:03:52,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:03:52,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 09:03:52,780 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 09:03:52,780 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 09:03:52,780 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-18 09:03:52,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-18 09:03:52,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-18 09:03:52,781 INFO L87 Difference]: Start difference. First operand 51 states and 56 transitions. Second operand 5 states. [2018-11-18 09:03:52,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:03:52,930 INFO L93 Difference]: Finished difference Result 88 states and 103 transitions. [2018-11-18 09:03:52,930 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-18 09:03:52,931 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2018-11-18 09:03:52,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:03:52,935 INFO L225 Difference]: With dead ends: 88 [2018-11-18 09:03:52,935 INFO L226 Difference]: Without dead ends: 88 [2018-11-18 09:03:52,936 INFO L604 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 [2018-11-18 09:03:52,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2018-11-18 09:03:52,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 63. [2018-11-18 09:03:52,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-11-18 09:03:52,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 73 transitions. [2018-11-18 09:03:52,948 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 73 transitions. Word has length 13 [2018-11-18 09:03:52,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:03:52,948 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 73 transitions. [2018-11-18 09:03:52,948 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-18 09:03:52,948 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 73 transitions. [2018-11-18 09:03:52,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-11-18 09:03:52,949 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:03:52,949 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:03:52,949 INFO L423 AbstractCegarLoop]: === Iteration 4 === [barErr0REQUIRES_VIOLATION, barErr1REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr3REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-11-18 09:03:52,949 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:03:52,950 INFO L82 PathProgramCache]: Analyzing trace with hash -591343784, now seen corresponding path program 1 times [2018-11-18 09:03:52,950 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:03:52,950 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:03:52,951 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:03:52,951 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:03:52,951 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:03:52,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:03:52,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 09:03:52,968 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 09:03:52,968 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 09:03:52,968 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 09:03:52,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 09:03:52,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 09:03:52,969 INFO L87 Difference]: Start difference. First operand 63 states and 73 transitions. Second operand 3 states. [2018-11-18 09:03:52,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:03:52,995 INFO L93 Difference]: Finished difference Result 68 states and 76 transitions. [2018-11-18 09:03:52,995 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 09:03:52,995 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2018-11-18 09:03:52,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:03:52,996 INFO L225 Difference]: With dead ends: 68 [2018-11-18 09:03:52,996 INFO L226 Difference]: Without dead ends: 68 [2018-11-18 09:03:52,996 INFO L604 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 [2018-11-18 09:03:52,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2018-11-18 09:03:53,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 62. [2018-11-18 09:03:53,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2018-11-18 09:03:53,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 70 transitions. [2018-11-18 09:03:53,002 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 70 transitions. Word has length 12 [2018-11-18 09:03:53,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:03:53,003 INFO L480 AbstractCegarLoop]: Abstraction has 62 states and 70 transitions. [2018-11-18 09:03:53,003 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 09:03:53,003 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 70 transitions. [2018-11-18 09:03:53,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-18 09:03:53,003 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:03:53,003 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:03:53,004 INFO L423 AbstractCegarLoop]: === Iteration 5 === [barErr0REQUIRES_VIOLATION, barErr1REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr3REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-11-18 09:03:53,004 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:03:53,004 INFO L82 PathProgramCache]: Analyzing trace with hash 1291025511, now seen corresponding path program 1 times [2018-11-18 09:03:53,004 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:03:53,004 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:03:53,005 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:03:53,005 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:03:53,005 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:03:53,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:03:53,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 09:03:53,031 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 09:03:53,031 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 09:03:53,031 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 09:03:53,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 09:03:53,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 09:03:53,032 INFO L87 Difference]: Start difference. First operand 62 states and 70 transitions. Second operand 3 states. [2018-11-18 09:03:53,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:03:53,063 INFO L93 Difference]: Finished difference Result 61 states and 69 transitions. [2018-11-18 09:03:53,063 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 09:03:53,063 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2018-11-18 09:03:53,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:03:53,064 INFO L225 Difference]: With dead ends: 61 [2018-11-18 09:03:53,064 INFO L226 Difference]: Without dead ends: 61 [2018-11-18 09:03:53,064 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 09:03:53,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-11-18 09:03:53,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2018-11-18 09:03:53,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-11-18 09:03:53,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 69 transitions. [2018-11-18 09:03:53,068 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 69 transitions. Word has length 14 [2018-11-18 09:03:53,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:03:53,068 INFO L480 AbstractCegarLoop]: Abstraction has 61 states and 69 transitions. [2018-11-18 09:03:53,068 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 09:03:53,068 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 69 transitions. [2018-11-18 09:03:53,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-18 09:03:53,069 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:03:53,069 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:03:53,069 INFO L423 AbstractCegarLoop]: === Iteration 6 === [barErr0REQUIRES_VIOLATION, barErr1REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr3REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-11-18 09:03:53,069 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:03:53,069 INFO L82 PathProgramCache]: Analyzing trace with hash 1291025512, now seen corresponding path program 1 times [2018-11-18 09:03:53,070 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:03:53,070 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:03:53,070 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:03:53,070 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:03:53,071 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:03:53,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:03:53,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:03:53,112 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-18 09:03:53,132 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 09:03:53 BoogieIcfgContainer [2018-11-18 09:03:53,132 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 09:03:53,132 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 09:03:53,132 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 09:03:53,132 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 09:03:53,133 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:03:52" (3/4) ... [2018-11-18 09:03:53,134 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-18 09:03:53,161 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_fb72cf77-59ac-42c0-8385-00c5d8393c2e/bin-2019/uautomizer/witness.graphml [2018-11-18 09:03:53,161 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 09:03:53,162 INFO L168 Benchmark]: Toolchain (without parser) took 1334.28 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.1 MB). Free memory was 960.2 MB in the beginning and 1.0 GB in the end (delta: -68.5 MB). Peak memory consumption was 73.6 MB. Max. memory is 11.5 GB. [2018-11-18 09:03:53,163 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 09:03:53,163 INFO L168 Benchmark]: CACSL2BoogieTranslator took 156.61 ms. Allocated memory is still 1.0 GB. Free memory was 960.2 MB in the beginning and 948.4 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 11.5 GB. [2018-11-18 09:03:53,163 INFO L168 Benchmark]: Boogie Preprocessor took 21.85 ms. Allocated memory is still 1.0 GB. Free memory was 948.4 MB in the beginning and 945.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-18 09:03:53,164 INFO L168 Benchmark]: RCFGBuilder took 255.92 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.1 MB). Free memory was 945.7 MB in the beginning and 1.1 GB in the end (delta: -169.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 11.5 GB. [2018-11-18 09:03:53,165 INFO L168 Benchmark]: TraceAbstraction took 867.96 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: 86.9 MB). Peak memory consumption was 86.9 MB. Max. memory is 11.5 GB. [2018-11-18 09:03:53,165 INFO L168 Benchmark]: Witness Printer took 29.17 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 09:03:53,167 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 156.61 ms. Allocated memory is still 1.0 GB. Free memory was 960.2 MB in the beginning and 948.4 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 21.85 ms. Allocated memory is still 1.0 GB. Free memory was 948.4 MB in the beginning and 945.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 255.92 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.1 MB). Free memory was 945.7 MB in the beginning and 1.1 GB in the end (delta: -169.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 867.96 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: 86.9 MB). Peak memory consumption was 86.9 MB. Max. memory is 11.5 GB. * Witness Printer took 29.17 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 23]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L32] int i, b[100]; [L33] i = 0 VAL [b={405:0}, i=0] [L33] COND TRUE i < 100 VAL [b={405:0}, i=0] [L34] CALL foo(i, b, i + 1) VAL [\old(n)=0, \old(size)=1, b={405:0}] [L21] FCALL int a[n], i; [L22] i = 0 VAL [\old(n)=0, \old(size)=1, a={402:0}, b={405:0}, b={405:0}, i=0, n=0, size=1] [L22] COND TRUE i < size VAL [\old(n)=0, \old(size)=1, a={402:0}, b={405:0}, b={405:0}, i=0, n=0, size=1] [L23] EXPR, FCALL b[i] VAL [\old(n)=0, \old(size)=1, a={402:0}, b={405:0}, b={405:0}, b[i]=403, i=0, n=0, size=1] [L23] FCALL a[i] = b[i] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 56 locations, 11 error locations. UNSAFE Result, 0.8s OverallTime, 6 OverallIterations, 1 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 244 SDtfs, 89 SDslu, 245 SDs, 0 SdLazy, 182 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=63occurred 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, 5 MinimizatonAttempts, 31 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 77 NumberOfCodeBlocks, 77 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 58 ConstructedInterpolants, 0 QuantifiedInterpolants, 2286 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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...