./Ultimate.py --spec ../../sv-benchmarks/c/MemSafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memset3_true-valid-memsafety_true-termination.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_b0abcd6d-1874-4fab-a0f9-ff4a3bd205c8/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_b0abcd6d-1874-4fab-a0f9-ff4a3bd205c8/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_b0abcd6d-1874-4fab-a0f9-ff4a3bd205c8/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_b0abcd6d-1874-4fab-a0f9-ff4a3bd205c8/bin-2019/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memset3_true-valid-memsafety_true-termination.c -s /tmp/vcloud-vcloud-master/worker/working_dir_b0abcd6d-1874-4fab-a0f9-ff4a3bd205c8/bin-2019/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_b0abcd6d-1874-4fab-a0f9-ff4a3bd205c8/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 06914024aa49a34ce88c7dcbc25f89730c27c8e4 ........................................................................................................................................................................................................................................................................................................................................................................................................................... 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 04:45:39,045 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 04:45:39,046 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 04:45:39,054 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 04:45:39,054 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 04:45:39,055 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 04:45:39,056 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 04:45:39,057 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 04:45:39,058 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 04:45:39,059 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 04:45:39,059 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 04:45:39,060 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 04:45:39,060 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 04:45:39,061 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 04:45:39,062 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 04:45:39,062 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 04:45:39,063 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 04:45:39,064 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 04:45:39,065 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 04:45:39,066 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 04:45:39,067 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 04:45:39,067 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 04:45:39,069 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 04:45:39,069 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 04:45:39,069 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 04:45:39,070 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 04:45:39,070 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 04:45:39,071 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 04:45:39,072 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 04:45:39,072 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 04:45:39,073 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 04:45:39,073 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 04:45:39,073 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 04:45:39,073 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 04:45:39,074 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 04:45:39,075 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 04:45:39,075 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_b0abcd6d-1874-4fab-a0f9-ff4a3bd205c8/bin-2019/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2018-10-27 04:45:39,084 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 04:45:39,084 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 04:45:39,085 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-27 04:45:39,085 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-27 04:45:39,086 INFO L133 SettingsManager]: * Use SBE=true [2018-10-27 04:45:39,086 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 04:45:39,086 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-27 04:45:39,086 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-10-27 04:45:39,086 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 04:45:39,086 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-27 04:45:39,086 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 04:45:39,087 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-10-27 04:45:39,087 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-10-27 04:45:39,087 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-10-27 04:45:39,087 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 04:45:39,087 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-27 04:45:39,087 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 04:45:39,087 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 04:45:39,087 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 04:45:39,088 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 04:45:39,088 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 04:45:39,088 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 04:45:39,088 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 04:45:39,088 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-27 04:45:39,088 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 04:45:39,088 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_b0abcd6d-1874-4fab-a0f9-ff4a3bd205c8/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 -> 06914024aa49a34ce88c7dcbc25f89730c27c8e4 [2018-10-27 04:45:39,111 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 04:45:39,120 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 04:45:39,123 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 04:45:39,124 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 04:45:39,125 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 04:45:39,125 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_b0abcd6d-1874-4fab-a0f9-ff4a3bd205c8/bin-2019/uautomizer/../../sv-benchmarks/c/ldv-memsafety/memset3_true-valid-memsafety_true-termination.c [2018-10-27 04:45:39,176 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b0abcd6d-1874-4fab-a0f9-ff4a3bd205c8/bin-2019/uautomizer/data/60887926c/e2b9c7cea37a421784ed9139a6431f0a/FLAGf370dcb70 [2018-10-27 04:45:39,570 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 04:45:39,572 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_b0abcd6d-1874-4fab-a0f9-ff4a3bd205c8/sv-benchmarks/c/ldv-memsafety/memset3_true-valid-memsafety_true-termination.c [2018-10-27 04:45:39,577 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b0abcd6d-1874-4fab-a0f9-ff4a3bd205c8/bin-2019/uautomizer/data/60887926c/e2b9c7cea37a421784ed9139a6431f0a/FLAGf370dcb70 [2018-10-27 04:45:39,594 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_b0abcd6d-1874-4fab-a0f9-ff4a3bd205c8/bin-2019/uautomizer/data/60887926c/e2b9c7cea37a421784ed9139a6431f0a [2018-10-27 04:45:39,597 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 04:45:39,598 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 04:45:39,599 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 04:45:39,599 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 04:45:39,603 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 04:45:39,604 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:45:39" (1/1) ... [2018-10-27 04:45:39,606 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22307f0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:45:39, skipping insertion in model container [2018-10-27 04:45:39,606 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:45:39" (1/1) ... [2018-10-27 04:45:39,614 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 04:45:39,634 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 04:45:39,778 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 04:45:39,785 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 04:45:39,800 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 04:45:39,815 INFO L193 MainTranslator]: Completed translation [2018-10-27 04:45:39,815 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:45:39 WrapperNode [2018-10-27 04:45:39,816 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 04:45:39,816 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 04:45:39,816 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 04:45:39,816 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 04:45:39,827 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:45:39" (1/1) ... [2018-10-27 04:45:39,827 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:45:39" (1/1) ... [2018-10-27 04:45:39,833 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:45:39" (1/1) ... [2018-10-27 04:45:39,835 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:45:39" (1/1) ... [2018-10-27 04:45:39,838 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:45:39" (1/1) ... [2018-10-27 04:45:39,841 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:45:39" (1/1) ... [2018-10-27 04:45:39,843 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:45:39" (1/1) ... [2018-10-27 04:45:39,844 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 04:45:39,845 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 04:45:39,845 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 04:45:39,845 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 04:45:39,846 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:45:39" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b0abcd6d-1874-4fab-a0f9-ff4a3bd205c8/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 04:45:39,967 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 04:45:39,967 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 04:45:39,967 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 04:45:39,968 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2018-10-27 04:45:39,968 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2018-10-27 04:45:39,968 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 04:45:39,968 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-10-27 04:45:39,968 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2018-10-27 04:45:39,968 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-10-27 04:45:39,968 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 04:45:39,968 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 04:45:40,078 WARN L632 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2018-10-27 04:45:40,276 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 04:45:40,277 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:45:40 BoogieIcfgContainer [2018-10-27 04:45:40,277 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 04:45:40,278 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 04:45:40,278 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 04:45:40,281 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 04:45:40,281 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 04:45:39" (1/3) ... [2018-10-27 04:45:40,282 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57c378a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:45:40, skipping insertion in model container [2018-10-27 04:45:40,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:45:39" (2/3) ... [2018-10-27 04:45:40,282 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57c378a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:45:40, skipping insertion in model container [2018-10-27 04:45:40,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:45:40" (3/3) ... [2018-10-27 04:45:40,284 INFO L112 eAbstractionObserver]: Analyzing ICFG memset3_true-valid-memsafety_true-termination.c [2018-10-27 04:45:40,293 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 04:45:40,300 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-10-27 04:45:40,314 INFO L257 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2018-10-27 04:45:40,339 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-27 04:45:40,340 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 04:45:40,340 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-27 04:45:40,340 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 04:45:40,340 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 04:45:40,341 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 04:45:40,341 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 04:45:40,341 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 04:45:40,341 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 04:45:40,356 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2018-10-27 04:45:40,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-10-27 04:45:40,368 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 04:45:40,369 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 04:45:40,372 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2018-10-27 04:45:40,378 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 04:45:40,378 INFO L82 PathProgramCache]: Analyzing trace with hash 1417793591, now seen corresponding path program 1 times [2018-10-27 04:45:40,380 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 04:45:40,380 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 04:45:40,423 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 04:45:40,423 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 04:45:40,423 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 04:45:40,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 04:45:40,580 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 04:45:40,582 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 04:45:40,582 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 04:45:40,585 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 04:45:40,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 04:45:40,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-27 04:45:40,596 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 4 states. [2018-10-27 04:45:40,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 04:45:40,733 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2018-10-27 04:45:40,734 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 04:45:40,734 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-10-27 04:45:40,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 04:45:40,742 INFO L225 Difference]: With dead ends: 22 [2018-10-27 04:45:40,742 INFO L226 Difference]: Without dead ends: 19 [2018-10-27 04:45:40,743 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 04:45:40,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-10-27 04:45:40,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-10-27 04:45:40,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-10-27 04:45:40,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2018-10-27 04:45:40,768 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 8 [2018-10-27 04:45:40,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 04:45:40,768 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2018-10-27 04:45:40,768 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 04:45:40,768 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2018-10-27 04:45:40,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-10-27 04:45:40,769 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 04:45:40,769 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 04:45:40,769 INFO L424 AbstractCegarLoop]: === Iteration 2 === [mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2018-10-27 04:45:40,769 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 04:45:40,769 INFO L82 PathProgramCache]: Analyzing trace with hash 1417793592, now seen corresponding path program 1 times [2018-10-27 04:45:40,769 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 04:45:40,770 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 04:45:40,770 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 04:45:40,770 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 04:45:40,771 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 04:45:40,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 04:45:40,856 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 04:45:40,857 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 04:45:40,857 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 04:45:40,858 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 04:45:40,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 04:45:40,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-27 04:45:40,858 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 4 states. [2018-10-27 04:45:40,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 04:45:40,913 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2018-10-27 04:45:40,913 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-27 04:45:40,913 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-10-27 04:45:40,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 04:45:40,914 INFO L225 Difference]: With dead ends: 18 [2018-10-27 04:45:40,914 INFO L226 Difference]: Without dead ends: 18 [2018-10-27 04:45:40,914 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 04:45:40,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-10-27 04:45:40,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-10-27 04:45:40,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-10-27 04:45:40,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2018-10-27 04:45:40,917 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 8 [2018-10-27 04:45:40,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 04:45:40,917 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2018-10-27 04:45:40,917 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 04:45:40,917 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2018-10-27 04:45:40,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-27 04:45:40,918 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 04:45:40,918 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 04:45:40,918 INFO L424 AbstractCegarLoop]: === Iteration 3 === [mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2018-10-27 04:45:40,919 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 04:45:40,919 INFO L82 PathProgramCache]: Analyzing trace with hash 577627260, now seen corresponding path program 1 times [2018-10-27 04:45:40,919 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 04:45:40,919 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 04:45:40,920 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 04:45:40,920 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 04:45:40,920 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 04:45:40,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 04:45:40,999 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 04:45:40,999 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 04:45:40,999 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 04:45:41,000 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 04:45:41,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 04:45:41,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-27 04:45:41,000 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 4 states. [2018-10-27 04:45:41,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 04:45:41,135 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2018-10-27 04:45:41,136 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 04:45:41,136 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2018-10-27 04:45:41,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 04:45:41,136 INFO L225 Difference]: With dead ends: 21 [2018-10-27 04:45:41,137 INFO L226 Difference]: Without dead ends: 19 [2018-10-27 04:45:41,137 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-27 04:45:41,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-10-27 04:45:41,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-10-27 04:45:41,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-10-27 04:45:41,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2018-10-27 04:45:41,140 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 17 [2018-10-27 04:45:41,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 04:45:41,141 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2018-10-27 04:45:41,141 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 04:45:41,141 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2018-10-27 04:45:41,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-10-27 04:45:41,142 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 04:45:41,142 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 04:45:41,142 INFO L424 AbstractCegarLoop]: === Iteration 4 === [mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2018-10-27 04:45:41,142 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 04:45:41,142 INFO L82 PathProgramCache]: Analyzing trace with hash 113669371, now seen corresponding path program 1 times [2018-10-27 04:45:41,142 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 04:45:41,143 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 04:45:41,143 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 04:45:41,143 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 04:45:41,143 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 04:45:41,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 04:45:41,300 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 04:45:41,300 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 04:45:41,301 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b0abcd6d-1874-4fab-a0f9-ff4a3bd205c8/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-10-27 04:45:41,311 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 04:45:41,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 04:45:41,337 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 04:45:41,403 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 04:45:41,423 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-27 04:45:41,423 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2018-10-27 04:45:41,423 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-27 04:45:41,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-27 04:45:41,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-10-27 04:45:41,424 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 8 states. [2018-10-27 04:45:41,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 04:45:41,461 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2018-10-27 04:45:41,462 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-27 04:45:41,462 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2018-10-27 04:45:41,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 04:45:41,462 INFO L225 Difference]: With dead ends: 22 [2018-10-27 04:45:41,462 INFO L226 Difference]: Without dead ends: 20 [2018-10-27 04:45:41,463 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2018-10-27 04:45:41,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-10-27 04:45:41,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2018-10-27 04:45:41,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-10-27 04:45:41,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2018-10-27 04:45:41,465 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 18 [2018-10-27 04:45:41,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 04:45:41,466 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2018-10-27 04:45:41,466 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-27 04:45:41,467 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2018-10-27 04:45:41,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-27 04:45:41,467 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 04:45:41,467 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 04:45:41,467 INFO L424 AbstractCegarLoop]: === Iteration 5 === [mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2018-10-27 04:45:41,467 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 04:45:41,468 INFO L82 PathProgramCache]: Analyzing trace with hash -1384123300, now seen corresponding path program 2 times [2018-10-27 04:45:41,468 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 04:45:41,468 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 04:45:41,468 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 04:45:41,469 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 04:45:41,469 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 04:45:41,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 04:45:41,560 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 04:45:41,560 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 04:45:41,560 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b0abcd6d-1874-4fab-a0f9-ff4a3bd205c8/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 04:45:41,566 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-27 04:45:41,586 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2018-10-27 04:45:41,586 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-27 04:45:41,588 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 04:45:41,660 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 04:45:41,664 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 5 [2018-10-27 04:45:41,665 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-10-27 04:45:41,668 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-10-27 04:45:41,668 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:5 [2018-10-27 04:45:41,736 WARN L854 $PredicateComparison]: unable to prove that (exists ((|main_~#cstats~0.base| Int)) (and (= |c_#valid| (store |c_old(#valid)| |main_~#cstats~0.base| 0)) (= 0 (select |c_old(#valid)| |main_~#cstats~0.base|)))) is different from true [2018-10-27 04:45:41,740 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-10-27 04:45:41,762 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 04:45:41,762 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2018-10-27 04:45:41,762 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-27 04:45:41,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-27 04:45:41,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=52, Unknown=1, NotChecked=14, Total=90 [2018-10-27 04:45:41,763 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 10 states. [2018-10-27 04:45:42,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 04:45:42,262 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2018-10-27 04:45:42,263 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-27 04:45:42,263 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 19 [2018-10-27 04:45:42,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 04:45:42,264 INFO L225 Difference]: With dead ends: 22 [2018-10-27 04:45:42,264 INFO L226 Difference]: Without dead ends: 0 [2018-10-27 04:45:42,264 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=64, Invalid=149, Unknown=1, NotChecked=26, Total=240 [2018-10-27 04:45:42,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-27 04:45:42,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-27 04:45:42,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-27 04:45:42,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-27 04:45:42,265 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2018-10-27 04:45:42,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 04:45:42,265 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-27 04:45:42,265 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-27 04:45:42,265 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-27 04:45:42,265 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-27 04:45:42,269 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 04:45:42 BoogieIcfgContainer [2018-10-27 04:45:42,269 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 04:45:42,270 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-27 04:45:42,270 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-27 04:45:42,270 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-27 04:45:42,270 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:45:40" (3/4) ... [2018-10-27 04:45:42,275 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-10-27 04:45:42,281 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-10-27 04:45:42,281 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure #Ultimate.C_memset [2018-10-27 04:45:42,282 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-10-27 04:45:42,286 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2018-10-27 04:45:42,286 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2018-10-27 04:45:42,286 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-10-27 04:45:42,286 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-10-27 04:45:42,318 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_b0abcd6d-1874-4fab-a0f9-ff4a3bd205c8/bin-2019/uautomizer/witness.graphml [2018-10-27 04:45:42,318 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-27 04:45:42,319 INFO L168 Benchmark]: Toolchain (without parser) took 2721.40 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.1 MB). Free memory was 954.4 MB in the beginning and 1.0 GB in the end (delta: -52.0 MB). Peak memory consumption was 80.1 MB. Max. memory is 11.5 GB. [2018-10-27 04:45:42,320 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 985.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 04:45:42,321 INFO L168 Benchmark]: CACSL2BoogieTranslator took 216.79 ms. Allocated memory is still 1.0 GB. Free memory was 954.4 MB in the beginning and 943.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-10-27 04:45:42,321 INFO L168 Benchmark]: Boogie Preprocessor took 28.46 ms. Allocated memory is still 1.0 GB. Free memory is still 943.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 04:45:42,323 INFO L168 Benchmark]: RCFGBuilder took 432.48 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.1 MB). Free memory was 941.0 MB in the beginning and 1.1 GB in the end (delta: -173.2 MB). Peak memory consumption was 21.2 MB. Max. memory is 11.5 GB. [2018-10-27 04:45:42,323 INFO L168 Benchmark]: TraceAbstraction took 1991.75 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: 105.1 MB). Peak memory consumption was 105.1 MB. Max. memory is 11.5 GB. [2018-10-27 04:45:42,324 INFO L168 Benchmark]: Witness Printer took 48.71 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-10-27 04:45:42,326 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 985.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 216.79 ms. Allocated memory is still 1.0 GB. Free memory was 954.4 MB in the beginning and 943.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 28.46 ms. Allocated memory is still 1.0 GB. Free memory is still 943.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 432.48 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.1 MB). Free memory was 941.0 MB in the beginning and 1.1 GB in the end (delta: -173.2 MB). Peak memory consumption was 21.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1991.75 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: 105.1 MB). Peak memory consumption was 105.1 MB. Max. memory is 11.5 GB. * Witness Printer took 48.71 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 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: 25]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 29]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 29]: 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, 23 locations, 3 error locations. SAFE Result, 1.9s OverallTime, 5 OverallIterations, 2 TraceHistogramMax, 0.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 76 SDtfs, 29 SDslu, 128 SDs, 0 SdLazy, 100 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 67 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 107 NumberOfCodeBlocks, 105 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 100 ConstructedInterpolants, 9 QuantifiedInterpolants, 4553 SizeOfPredicates, 2 NumberOfNonLiveVariables, 135 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 7 InterpolantComputations, 4 PerfectInterpolantSequences, 3/8 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...