./Ultimate.py --spec ../../sv-benchmarks/c/MemSafety.prp --file ../../sv-benchmarks/c/memsafety-ext3/naturalNumbers1_false-valid-deref.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_c1432d26-1fa9-453b-9050-ab705ef77f98/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_c1432d26-1fa9-453b-9050-ab705ef77f98/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_c1432d26-1fa9-453b-9050-ab705ef77f98/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_c1432d26-1fa9-453b-9050-ab705ef77f98/bin-2019/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-ext3/naturalNumbers1_false-valid-deref.c -s /tmp/vcloud-vcloud-master/worker/working_dir_c1432d26-1fa9-453b-9050-ab705ef77f98/bin-2019/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_c1432d26-1fa9-453b-9050-ab705ef77f98/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 932f76685ed1816d93a388d0ab1addae9c51483a ................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-10-27 04:45:07,172 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 04:45:07,174 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 04:45:07,184 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 04:45:07,184 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 04:45:07,185 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 04:45:07,186 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 04:45:07,187 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 04:45:07,188 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 04:45:07,189 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 04:45:07,189 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 04:45:07,189 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 04:45:07,190 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 04:45:07,192 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 04:45:07,193 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 04:45:07,194 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 04:45:07,194 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 04:45:07,196 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 04:45:07,197 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 04:45:07,206 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 04:45:07,207 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 04:45:07,208 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 04:45:07,210 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 04:45:07,210 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 04:45:07,210 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 04:45:07,211 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 04:45:07,212 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 04:45:07,212 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 04:45:07,213 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 04:45:07,214 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 04:45:07,215 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 04:45:07,215 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 04:45:07,215 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 04:45:07,215 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 04:45:07,216 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 04:45:07,217 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 04:45:07,217 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_c1432d26-1fa9-453b-9050-ab705ef77f98/bin-2019/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2018-10-27 04:45:07,228 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 04:45:07,228 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 04:45:07,229 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-27 04:45:07,229 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-27 04:45:07,229 INFO L133 SettingsManager]: * Use SBE=true [2018-10-27 04:45:07,230 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 04:45:07,230 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-27 04:45:07,230 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-10-27 04:45:07,230 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 04:45:07,230 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-27 04:45:07,230 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 04:45:07,231 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-10-27 04:45:07,231 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-10-27 04:45:07,231 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-10-27 04:45:07,231 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 04:45:07,231 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-27 04:45:07,231 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 04:45:07,231 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 04:45:07,232 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 04:45:07,232 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 04:45:07,232 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 04:45:07,232 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 04:45:07,232 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 04:45:07,232 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-27 04:45:07,232 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 04:45:07,233 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_c1432d26-1fa9-453b-9050-ab705ef77f98/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 -> 932f76685ed1816d93a388d0ab1addae9c51483a [2018-10-27 04:45:07,267 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 04:45:07,280 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 04:45:07,283 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 04:45:07,284 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 04:45:07,284 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 04:45:07,285 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_c1432d26-1fa9-453b-9050-ab705ef77f98/bin-2019/uautomizer/../../sv-benchmarks/c/memsafety-ext3/naturalNumbers1_false-valid-deref.c [2018-10-27 04:45:07,336 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_c1432d26-1fa9-453b-9050-ab705ef77f98/bin-2019/uautomizer/data/c6b1f0ab5/76af240400ee4fea852a2a0eeb167059/FLAG7cc42f64d [2018-10-27 04:45:07,739 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 04:45:07,739 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_c1432d26-1fa9-453b-9050-ab705ef77f98/sv-benchmarks/c/memsafety-ext3/naturalNumbers1_false-valid-deref.c [2018-10-27 04:45:07,753 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_c1432d26-1fa9-453b-9050-ab705ef77f98/bin-2019/uautomizer/data/c6b1f0ab5/76af240400ee4fea852a2a0eeb167059/FLAG7cc42f64d [2018-10-27 04:45:07,773 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_c1432d26-1fa9-453b-9050-ab705ef77f98/bin-2019/uautomizer/data/c6b1f0ab5/76af240400ee4fea852a2a0eeb167059 [2018-10-27 04:45:07,777 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 04:45:07,778 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 04:45:07,779 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 04:45:07,779 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 04:45:07,787 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 04:45:07,788 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:45:07" (1/1) ... [2018-10-27 04:45:07,790 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@723580ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:45:07, skipping insertion in model container [2018-10-27 04:45:07,790 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:45:07" (1/1) ... [2018-10-27 04:45:07,799 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 04:45:07,815 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 04:45:07,972 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 04:45:07,981 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 04:45:07,999 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 04:45:08,014 INFO L193 MainTranslator]: Completed translation [2018-10-27 04:45:08,014 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:45:08 WrapperNode [2018-10-27 04:45:08,015 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 04:45:08,015 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 04:45:08,015 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 04:45:08,016 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 04:45:08,028 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:45:08" (1/1) ... [2018-10-27 04:45:08,028 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:45:08" (1/1) ... [2018-10-27 04:45:08,035 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:45:08" (1/1) ... [2018-10-27 04:45:08,035 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:45:08" (1/1) ... [2018-10-27 04:45:08,040 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:45:08" (1/1) ... [2018-10-27 04:45:08,043 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:45:08" (1/1) ... [2018-10-27 04:45:08,044 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:45:08" (1/1) ... [2018-10-27 04:45:08,046 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 04:45:08,046 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 04:45:08,046 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 04:45:08,047 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 04:45:08,047 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:45:08" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c1432d26-1fa9-453b-9050-ab705ef77f98/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 04:45:08,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 04:45:08,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 04:45:08,138 INFO L138 BoogieDeclarations]: Found implementation of procedure areNatural [2018-10-27 04:45:08,138 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 04:45:08,139 INFO L130 BoogieDeclarations]: Found specification of procedure areNatural [2018-10-27 04:45:08,139 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-10-27 04:45:08,139 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 04:45:08,139 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-10-27 04:45:08,139 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-10-27 04:45:08,139 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-10-27 04:45:08,139 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 04:45:08,139 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 04:45:08,139 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-10-27 04:45:08,476 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 04:45:08,477 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:45:08 BoogieIcfgContainer [2018-10-27 04:45:08,477 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 04:45:08,478 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 04:45:08,478 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 04:45:08,480 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 04:45:08,480 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 04:45:07" (1/3) ... [2018-10-27 04:45:08,481 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55fbd4af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:45:08, skipping insertion in model container [2018-10-27 04:45:08,481 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:45:08" (2/3) ... [2018-10-27 04:45:08,481 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55fbd4af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:45:08, skipping insertion in model container [2018-10-27 04:45:08,482 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:45:08" (3/3) ... [2018-10-27 04:45:08,483 INFO L112 eAbstractionObserver]: Analyzing ICFG naturalNumbers1_false-valid-deref.c [2018-10-27 04:45:08,490 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 04:45:08,496 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-10-27 04:45:08,509 INFO L257 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2018-10-27 04:45:08,529 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-27 04:45:08,529 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 04:45:08,530 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-27 04:45:08,530 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 04:45:08,530 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 04:45:08,530 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 04:45:08,530 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 04:45:08,530 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 04:45:08,530 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 04:45:08,543 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2018-10-27 04:45:08,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-10-27 04:45:08,551 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 04:45:08,552 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 04:45:08,554 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, areNaturalErr0REQUIRES_VIOLATION, areNaturalErr1REQUIRES_VIOLATION]=== [2018-10-27 04:45:08,558 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 04:45:08,559 INFO L82 PathProgramCache]: Analyzing trace with hash -1601754629, now seen corresponding path program 1 times [2018-10-27 04:45:08,560 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 04:45:08,561 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 04:45:08,600 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 04:45:08,600 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 04:45:08,600 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 04:45:08,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 04:45:08,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 04:45:08,757 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 04:45:08,757 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 04:45:08,760 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 04:45:08,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 04:45:08,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-27 04:45:08,773 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 5 states. [2018-10-27 04:45:09,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 04:45:09,096 INFO L93 Difference]: Finished difference Result 34 states and 35 transitions. [2018-10-27 04:45:09,096 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-27 04:45:09,097 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2018-10-27 04:45:09,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 04:45:09,108 INFO L225 Difference]: With dead ends: 34 [2018-10-27 04:45:09,108 INFO L226 Difference]: Without dead ends: 31 [2018-10-27 04:45:09,109 INFO L605 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 [2018-10-27 04:45:09,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-10-27 04:45:09,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-10-27 04:45:09,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-10-27 04:45:09,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2018-10-27 04:45:09,146 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 21 [2018-10-27 04:45:09,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 04:45:09,147 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2018-10-27 04:45:09,147 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 04:45:09,147 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2018-10-27 04:45:09,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-10-27 04:45:09,148 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 04:45:09,148 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 04:45:09,148 INFO L424 AbstractCegarLoop]: === Iteration 2 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, areNaturalErr0REQUIRES_VIOLATION, areNaturalErr1REQUIRES_VIOLATION]=== [2018-10-27 04:45:09,148 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 04:45:09,148 INFO L82 PathProgramCache]: Analyzing trace with hash -1601754628, now seen corresponding path program 1 times [2018-10-27 04:45:09,148 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 04:45:09,149 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 04:45:09,149 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 04:45:09,150 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 04:45:09,151 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 04:45:09,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 04:45:09,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 04:45:09,294 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 04:45:09,294 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 04:45:09,295 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 04:45:09,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 04:45:09,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-27 04:45:09,296 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand 5 states. [2018-10-27 04:45:09,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 04:45:09,399 INFO L93 Difference]: Finished difference Result 37 states and 39 transitions. [2018-10-27 04:45:09,400 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-27 04:45:09,400 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2018-10-27 04:45:09,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 04:45:09,403 INFO L225 Difference]: With dead ends: 37 [2018-10-27 04:45:09,403 INFO L226 Difference]: Without dead ends: 37 [2018-10-27 04:45:09,404 INFO L605 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 [2018-10-27 04:45:09,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-10-27 04:45:09,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 34. [2018-10-27 04:45:09,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-10-27 04:45:09,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 35 transitions. [2018-10-27 04:45:09,409 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 35 transitions. Word has length 21 [2018-10-27 04:45:09,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 04:45:09,410 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 35 transitions. [2018-10-27 04:45:09,410 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 04:45:09,411 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 35 transitions. [2018-10-27 04:45:09,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-10-27 04:45:09,411 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 04:45:09,411 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 04:45:09,412 INFO L424 AbstractCegarLoop]: === Iteration 3 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, areNaturalErr0REQUIRES_VIOLATION, areNaturalErr1REQUIRES_VIOLATION]=== [2018-10-27 04:45:09,412 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 04:45:09,412 INFO L82 PathProgramCache]: Analyzing trace with hash 1419754768, now seen corresponding path program 1 times [2018-10-27 04:45:09,412 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 04:45:09,412 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 04:45:09,413 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 04:45:09,413 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 04:45:09,413 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 04:45:09,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 04:45:09,657 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 04:45:09,657 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 04:45:09,657 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c1432d26-1fa9-453b-9050-ab705ef77f98/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 04:45:09,668 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 04:45:09,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 04:45:09,702 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 04:45:09,745 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-10-27 04:45:09,746 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-10-27 04:45:09,751 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-27 04:45:09,752 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-10-27 04:45:09,780 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 04:45:09,807 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-27 04:45:09,807 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-10-27 04:45:09,808 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 04:45:09,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 04:45:09,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-10-27 04:45:09,808 INFO L87 Difference]: Start difference. First operand 34 states and 35 transitions. Second operand 6 states. [2018-10-27 04:45:10,095 WARN L179 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-10-27 04:45:10,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 04:45:10,244 INFO L93 Difference]: Finished difference Result 43 states and 46 transitions. [2018-10-27 04:45:10,245 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-27 04:45:10,245 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2018-10-27 04:45:10,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 04:45:10,246 INFO L225 Difference]: With dead ends: 43 [2018-10-27 04:45:10,246 INFO L226 Difference]: Without dead ends: 43 [2018-10-27 04:45:10,246 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 21 SyntacticMatches, 5 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-10-27 04:45:10,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-10-27 04:45:10,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 38. [2018-10-27 04:45:10,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-10-27 04:45:10,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 40 transitions. [2018-10-27 04:45:10,251 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 40 transitions. Word has length 25 [2018-10-27 04:45:10,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 04:45:10,252 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 40 transitions. [2018-10-27 04:45:10,252 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 04:45:10,252 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 40 transitions. [2018-10-27 04:45:10,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-10-27 04:45:10,253 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 04:45:10,253 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 04:45:10,253 INFO L424 AbstractCegarLoop]: === Iteration 4 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, areNaturalErr0REQUIRES_VIOLATION, areNaturalErr1REQUIRES_VIOLATION]=== [2018-10-27 04:45:10,253 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 04:45:10,253 INFO L82 PathProgramCache]: Analyzing trace with hash -1279711435, now seen corresponding path program 1 times [2018-10-27 04:45:10,253 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 04:45:10,253 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 04:45:10,254 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 04:45:10,254 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 04:45:10,254 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 04:45:10,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 04:45:10,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 04:45:10,329 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 04:45:10,329 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 04:45:10,329 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 04:45:10,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 04:45:10,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-27 04:45:10,330 INFO L87 Difference]: Start difference. First operand 38 states and 40 transitions. Second operand 4 states. [2018-10-27 04:45:10,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 04:45:10,386 INFO L93 Difference]: Finished difference Result 37 states and 39 transitions. [2018-10-27 04:45:10,386 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-27 04:45:10,386 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2018-10-27 04:45:10,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 04:45:10,387 INFO L225 Difference]: With dead ends: 37 [2018-10-27 04:45:10,387 INFO L226 Difference]: Without dead ends: 30 [2018-10-27 04:45:10,387 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-27 04:45:10,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-10-27 04:45:10,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2018-10-27 04:45:10,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-10-27 04:45:10,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2018-10-27 04:45:10,389 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 28 [2018-10-27 04:45:10,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 04:45:10,390 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2018-10-27 04:45:10,390 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 04:45:10,390 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2018-10-27 04:45:10,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-10-27 04:45:10,390 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 04:45:10,390 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 04:45:10,391 INFO L424 AbstractCegarLoop]: === Iteration 5 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, areNaturalErr0REQUIRES_VIOLATION, areNaturalErr1REQUIRES_VIOLATION]=== [2018-10-27 04:45:10,391 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 04:45:10,391 INFO L82 PathProgramCache]: Analyzing trace with hash 1431348772, now seen corresponding path program 2 times [2018-10-27 04:45:10,391 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 04:45:10,391 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 04:45:10,391 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 04:45:10,392 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 04:45:10,392 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 04:45:10,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 04:45:10,655 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-10-27 04:45:10,655 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 04:45:10,656 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-10-27 04:45:10,656 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-27 04:45:10,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-27 04:45:10,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-10-27 04:45:10,657 INFO L87 Difference]: Start difference. First operand 30 states and 30 transitions. Second operand 7 states. [2018-10-27 04:45:10,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 04:45:10,741 INFO L93 Difference]: Finished difference Result 22 states and 21 transitions. [2018-10-27 04:45:10,741 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 04:45:10,741 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 29 [2018-10-27 04:45:10,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 04:45:10,741 INFO L225 Difference]: With dead ends: 22 [2018-10-27 04:45:10,741 INFO L226 Difference]: Without dead ends: 0 [2018-10-27 04:45:10,742 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2018-10-27 04:45:10,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-27 04:45:10,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-27 04:45:10,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-27 04:45:10,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-27 04:45:10,743 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 29 [2018-10-27 04:45:10,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 04:45:10,743 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-27 04:45:10,743 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-27 04:45:10,743 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-27 04:45:10,743 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-27 04:45:10,747 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 04:45:10 BoogieIcfgContainer [2018-10-27 04:45:10,747 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 04:45:10,748 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-27 04:45:10,748 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-27 04:45:10,748 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-27 04:45:10,748 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:45:08" (3/4) ... [2018-10-27 04:45:10,751 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-10-27 04:45:10,756 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-10-27 04:45:10,756 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-10-27 04:45:10,756 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure areNatural [2018-10-27 04:45:10,760 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2018-10-27 04:45:10,760 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2018-10-27 04:45:10,760 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-10-27 04:45:10,760 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-10-27 04:45:10,761 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-10-27 04:45:10,796 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_c1432d26-1fa9-453b-9050-ab705ef77f98/bin-2019/uautomizer/witness.graphml [2018-10-27 04:45:10,796 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-27 04:45:10,796 INFO L168 Benchmark]: Toolchain (without parser) took 3018.68 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 157.8 MB). Free memory was 958.1 MB in the beginning and 996.4 MB in the end (delta: -38.4 MB). Peak memory consumption was 119.5 MB. Max. memory is 11.5 GB. [2018-10-27 04:45:10,797 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 982.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 04:45:10,797 INFO L168 Benchmark]: CACSL2BoogieTranslator took 235.52 ms. Allocated memory is still 1.0 GB. Free memory was 958.1 MB in the beginning and 947.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-10-27 04:45:10,798 INFO L168 Benchmark]: Boogie Preprocessor took 30.89 ms. Allocated memory is still 1.0 GB. Free memory was 947.3 MB in the beginning and 944.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-10-27 04:45:10,799 INFO L168 Benchmark]: RCFGBuilder took 430.63 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 157.8 MB). Free memory was 944.6 MB in the beginning and 1.1 GB in the end (delta: -197.1 MB). Peak memory consumption was 19.9 MB. Max. memory is 11.5 GB. [2018-10-27 04:45:10,800 INFO L168 Benchmark]: TraceAbstraction took 2269.85 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 999.1 MB in the end (delta: 142.7 MB). Peak memory consumption was 142.7 MB. Max. memory is 11.5 GB. [2018-10-27 04:45:10,800 INFO L168 Benchmark]: Witness Printer took 48.19 ms. Allocated memory is still 1.2 GB. Free memory was 999.1 MB in the beginning and 996.4 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-10-27 04:45:10,803 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 982.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 235.52 ms. Allocated memory is still 1.0 GB. Free memory was 958.1 MB in the beginning and 947.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 30.89 ms. Allocated memory is still 1.0 GB. Free memory was 947.3 MB in the beginning and 944.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 430.63 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 157.8 MB). Free memory was 944.6 MB in the beginning and 1.1 GB in the end (delta: -197.1 MB). Peak memory consumption was 19.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2269.85 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 999.1 MB in the end (delta: 142.7 MB). Peak memory consumption was 142.7 MB. Max. memory is 11.5 GB. * Witness Printer took 48.19 ms. Allocated memory is still 1.2 GB. Free memory was 999.1 MB in the beginning and 996.4 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 4]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 4]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 35 locations, 3 error locations. SAFE Result, 2.2s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 1.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 77 SDtfs, 81 SDslu, 138 SDs, 0 SdLazy, 293 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 66 GetRequests, 35 SyntacticMatches, 7 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred 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, 8 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 149 NumberOfCodeBlocks, 149 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 143 ConstructedInterpolants, 0 QuantifiedInterpolants, 22842 SizeOfPredicates, 2 NumberOfNonLiveVariables, 70 ConjunctsInSsa, 16 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 10/16 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...