./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_8a7e7726-8a5d-49e8-9ff6-5fe3fc853b09/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_8a7e7726-8a5d-49e8-9ff6-5fe3fc853b09/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_8a7e7726-8a5d-49e8-9ff6-5fe3fc853b09/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_8a7e7726-8a5d-49e8-9ff6-5fe3fc853b09/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_8a7e7726-8a5d-49e8-9ff6-5fe3fc853b09/bin-2019/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_8a7e7726-8a5d-49e8-9ff6-5fe3fc853b09/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 [2018-11-10 12:33:53,180 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 12:33:53,181 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 12:33:53,187 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-10 12:33:53,187 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-10 12:33:53,188 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-10 12:33:53,188 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-10 12:33:53,189 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-10 12:33:53,191 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-10 12:33:53,191 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-10 12:33:53,192 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-10 12:33:53,192 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 12:33:53,192 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 12:33:53,193 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 12:33:53,194 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 12:33:53,194 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 12:33:53,195 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 12:33:53,196 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 12:33:53,197 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 12:33:53,198 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 12:33:53,199 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 12:33:53,200 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 12:33:53,202 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 12:33:53,202 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 12:33:53,202 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 12:33:53,203 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 12:33:53,203 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 12:33:53,204 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 12:33:53,204 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 12:33:53,205 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 12:33:53,205 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 12:33:53,206 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 12:33:53,206 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 12:33:53,206 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 12:33:53,207 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 12:33:53,207 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 12:33:53,207 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_8a7e7726-8a5d-49e8-9ff6-5fe3fc853b09/bin-2019/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2018-11-10 12:33:53,217 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 12:33:53,217 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 12:33:53,218 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-10 12:33:53,218 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-10 12:33:53,218 INFO L133 SettingsManager]: * Use SBE=true [2018-11-10 12:33:53,218 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 12:33:53,219 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-10 12:33:53,219 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-10 12:33:53,219 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-10 12:33:53,219 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-10 12:33:53,219 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 12:33:53,219 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-11-10 12:33:53,219 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-11-10 12:33:53,219 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-11-10 12:33:53,220 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-10 12:33:53,220 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-10 12:33:53,220 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 12:33:53,220 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-10 12:33:53,220 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-10 12:33:53,220 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-10 12:33:53,221 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 12:33:53,221 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 12:33:53,221 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-10 12:33:53,221 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-10 12:33:53,221 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-10 12:33:53,221 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_8a7e7726-8a5d-49e8-9ff6-5fe3fc853b09/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 [2018-11-10 12:33:53,246 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 12:33:53,254 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 12:33:53,256 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 12:33:53,257 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 12:33:53,257 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 12:33:53,258 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_8a7e7726-8a5d-49e8-9ff6-5fe3fc853b09/bin-2019/uautomizer/../../sv-benchmarks/c/ldv-memsafety/memset3_true-valid-memsafety_true-termination.c [2018-11-10 12:33:53,294 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_8a7e7726-8a5d-49e8-9ff6-5fe3fc853b09/bin-2019/uautomizer/data/32dc23235/132d722ee0f540f38c4a8d46683d7e13/FLAG476654d65 [2018-11-10 12:33:53,708 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 12:33:53,708 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_8a7e7726-8a5d-49e8-9ff6-5fe3fc853b09/sv-benchmarks/c/ldv-memsafety/memset3_true-valid-memsafety_true-termination.c [2018-11-10 12:33:53,712 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_8a7e7726-8a5d-49e8-9ff6-5fe3fc853b09/bin-2019/uautomizer/data/32dc23235/132d722ee0f540f38c4a8d46683d7e13/FLAG476654d65 [2018-11-10 12:33:53,723 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_8a7e7726-8a5d-49e8-9ff6-5fe3fc853b09/bin-2019/uautomizer/data/32dc23235/132d722ee0f540f38c4a8d46683d7e13 [2018-11-10 12:33:53,725 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 12:33:53,726 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-10 12:33:53,727 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 12:33:53,727 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 12:33:53,731 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 12:33:53,731 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 12:33:53" (1/1) ... [2018-11-10 12:33:53,734 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73c0ff32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:33:53, skipping insertion in model container [2018-11-10 12:33:53,734 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 12:33:53" (1/1) ... [2018-11-10 12:33:53,742 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 12:33:53,757 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 12:33:53,866 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 12:33:53,871 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 12:33:53,882 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 12:33:53,891 INFO L193 MainTranslator]: Completed translation [2018-11-10 12:33:53,892 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:33:53 WrapperNode [2018-11-10 12:33:53,892 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-10 12:33:53,892 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-10 12:33:53,892 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-10 12:33:53,892 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-10 12:33:53,900 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:33:53" (1/1) ... [2018-11-10 12:33:53,900 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:33:53" (1/1) ... [2018-11-10 12:33:53,905 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:33:53" (1/1) ... [2018-11-10 12:33:53,905 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:33:53" (1/1) ... [2018-11-10 12:33:53,907 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:33:53" (1/1) ... [2018-11-10 12:33:53,909 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:33:53" (1/1) ... [2018-11-10 12:33:53,910 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:33:53" (1/1) ... [2018-11-10 12:33:53,911 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-10 12:33:53,911 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-10 12:33:53,911 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-10 12:33:53,911 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-10 12:33:53,912 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:33:53" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8a7e7726-8a5d-49e8-9ff6-5fe3fc853b09/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 12:33:53,979 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-10 12:33:53,979 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-10 12:33:53,979 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-10 12:33:53,979 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2018-11-10 12:33:53,979 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2018-11-10 12:33:53,979 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-10 12:33:53,980 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-10 12:33:53,980 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2018-11-10 12:33:53,980 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-10 12:33:53,980 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-10 12:33:53,980 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-10 12:33:54,044 WARN L632 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2018-11-10 12:33:54,088 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-10 12:33:54,088 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 12:33:54 BoogieIcfgContainer [2018-11-10 12:33:54,088 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-10 12:33:54,089 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-10 12:33:54,089 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-10 12:33:54,091 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-10 12:33:54,091 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 12:33:53" (1/3) ... [2018-11-10 12:33:54,091 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4015b709 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 12:33:54, skipping insertion in model container [2018-11-10 12:33:54,092 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:33:53" (2/3) ... [2018-11-10 12:33:54,092 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4015b709 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 12:33:54, skipping insertion in model container [2018-11-10 12:33:54,092 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 12:33:54" (3/3) ... [2018-11-10 12:33:54,094 INFO L112 eAbstractionObserver]: Analyzing ICFG memset3_true-valid-memsafety_true-termination.c [2018-11-10 12:33:54,102 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-10 12:33:54,107 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-11-10 12:33:54,117 INFO L257 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2018-11-10 12:33:54,136 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-10 12:33:54,136 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-10 12:33:54,136 INFO L383 AbstractCegarLoop]: Hoare is false [2018-11-10 12:33:54,136 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-10 12:33:54,136 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-10 12:33:54,136 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-10 12:33:54,137 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-10 12:33:54,137 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-10 12:33:54,137 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-10 12:33:54,145 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2018-11-10 12:33:54,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-11-10 12:33:54,151 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 12:33:54,152 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 12:33:54,153 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2018-11-10 12:33:54,157 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 12:33:54,157 INFO L82 PathProgramCache]: Analyzing trace with hash 1417793591, now seen corresponding path program 1 times [2018-11-10 12:33:54,158 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 12:33:54,158 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 12:33:54,198 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 12:33:54,198 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 12:33:54,198 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 12:33:54,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 12:33:54,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 12:33:54,269 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 12:33:54,269 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-10 12:33:54,272 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-10 12:33:54,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-10 12:33:54,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-10 12:33:54,283 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 4 states. [2018-11-10 12:33:54,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 12:33:54,336 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2018-11-10 12:33:54,337 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-10 12:33:54,338 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-11-10 12:33:54,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 12:33:54,343 INFO L225 Difference]: With dead ends: 22 [2018-11-10 12:33:54,343 INFO L226 Difference]: Without dead ends: 19 [2018-11-10 12:33:54,344 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 [2018-11-10 12:33:54,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-11-10 12:33:54,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-11-10 12:33:54,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-11-10 12:33:54,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2018-11-10 12:33:54,370 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 8 [2018-11-10 12:33:54,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 12:33:54,371 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2018-11-10 12:33:54,371 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-10 12:33:54,371 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2018-11-10 12:33:54,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-11-10 12:33:54,371 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 12:33:54,371 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 12:33:54,372 INFO L424 AbstractCegarLoop]: === Iteration 2 === [mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2018-11-10 12:33:54,372 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 12:33:54,372 INFO L82 PathProgramCache]: Analyzing trace with hash 1417793592, now seen corresponding path program 1 times [2018-11-10 12:33:54,372 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 12:33:54,372 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 12:33:54,373 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 12:33:54,373 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 12:33:54,373 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 12:33:54,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 12:33:54,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 12:33:54,449 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 12:33:54,450 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-10 12:33:54,451 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-10 12:33:54,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-10 12:33:54,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-10 12:33:54,451 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 4 states. [2018-11-10 12:33:54,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 12:33:54,476 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2018-11-10 12:33:54,476 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-10 12:33:54,476 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-11-10 12:33:54,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 12:33:54,476 INFO L225 Difference]: With dead ends: 18 [2018-11-10 12:33:54,477 INFO L226 Difference]: Without dead ends: 18 [2018-11-10 12:33:54,477 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 [2018-11-10 12:33:54,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-11-10 12:33:54,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-11-10 12:33:54,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-11-10 12:33:54,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2018-11-10 12:33:54,480 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 8 [2018-11-10 12:33:54,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 12:33:54,480 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2018-11-10 12:33:54,480 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-10 12:33:54,480 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2018-11-10 12:33:54,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-11-10 12:33:54,481 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 12:33:54,481 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 12:33:54,481 INFO L424 AbstractCegarLoop]: === Iteration 3 === [mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2018-11-10 12:33:54,481 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 12:33:54,481 INFO L82 PathProgramCache]: Analyzing trace with hash 577627260, now seen corresponding path program 1 times [2018-11-10 12:33:54,481 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 12:33:54,482 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 12:33:54,482 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 12:33:54,482 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 12:33:54,483 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 12:33:54,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 12:33:54,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 12:33:54,525 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 12:33:54,525 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-10 12:33:54,526 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-10 12:33:54,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-10 12:33:54,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-10 12:33:54,526 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 4 states. [2018-11-10 12:33:54,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 12:33:54,540 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2018-11-10 12:33:54,540 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-10 12:33:54,541 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2018-11-10 12:33:54,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 12:33:54,541 INFO L225 Difference]: With dead ends: 21 [2018-11-10 12:33:54,541 INFO L226 Difference]: Without dead ends: 19 [2018-11-10 12:33:54,542 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 [2018-11-10 12:33:54,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-11-10 12:33:54,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-11-10 12:33:54,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-11-10 12:33:54,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2018-11-10 12:33:54,544 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 17 [2018-11-10 12:33:54,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 12:33:54,545 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2018-11-10 12:33:54,545 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-10 12:33:54,545 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2018-11-10 12:33:54,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-11-10 12:33:54,545 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 12:33:54,545 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 12:33:54,546 INFO L424 AbstractCegarLoop]: === Iteration 4 === [mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2018-11-10 12:33:54,546 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 12:33:54,546 INFO L82 PathProgramCache]: Analyzing trace with hash 113669371, now seen corresponding path program 1 times [2018-11-10 12:33:54,546 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 12:33:54,546 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 12:33:54,547 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 12:33:54,547 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 12:33:54,547 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 12:33:54,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 12:33:54,603 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 12:33:54,603 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 12:33:54,603 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8a7e7726-8a5d-49e8-9ff6-5fe3fc853b09/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 [2018-11-10 12:33:54,612 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 12:33:54,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 12:33:54,629 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 12:33:54,674 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 12:33:54,693 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 12:33:54,694 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2018-11-10 12:33:54,694 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-10 12:33:54,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-10 12:33:54,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-11-10 12:33:54,694 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 8 states. [2018-11-10 12:33:54,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 12:33:54,712 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2018-11-10 12:33:54,712 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-10 12:33:54,712 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2018-11-10 12:33:54,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 12:33:54,713 INFO L225 Difference]: With dead ends: 22 [2018-11-10 12:33:54,713 INFO L226 Difference]: Without dead ends: 20 [2018-11-10 12:33:54,713 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2018-11-10 12:33:54,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-11-10 12:33:54,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2018-11-10 12:33:54,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-11-10 12:33:54,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2018-11-10 12:33:54,715 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 18 [2018-11-10 12:33:54,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 12:33:54,716 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2018-11-10 12:33:54,716 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-10 12:33:54,716 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2018-11-10 12:33:54,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-11-10 12:33:54,716 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 12:33:54,716 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 12:33:54,716 INFO L424 AbstractCegarLoop]: === Iteration 5 === [mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2018-11-10 12:33:54,717 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 12:33:54,717 INFO L82 PathProgramCache]: Analyzing trace with hash -1384123300, now seen corresponding path program 2 times [2018-11-10 12:33:54,717 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 12:33:54,717 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 12:33:54,717 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 12:33:54,718 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 12:33:54,718 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 12:33:54,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 12:33:54,777 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 12:33:54,777 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 12:33:54,777 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8a7e7726-8a5d-49e8-9ff6-5fe3fc853b09/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 [2018-11-10 12:33:54,793 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-10 12:33:54,805 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2018-11-10 12:33:54,805 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 12:33:54,806 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 12:33:54,844 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 12:33:54,847 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 [2018-11-10 12:33:54,848 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-10 12:33:54,849 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. [2018-11-10 12:33:54,849 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:5 [2018-11-10 12:33:54,879 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 [2018-11-10 12:33:54,882 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-11-10 12:33:54,898 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-10 12:33:54,898 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2018-11-10 12:33:54,898 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-10 12:33:54,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-10 12:33:54,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=52, Unknown=1, NotChecked=14, Total=90 [2018-11-10 12:33:54,899 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 10 states. [2018-11-10 12:33:55,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 12:33:55,025 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2018-11-10 12:33:55,025 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-10 12:33:55,025 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 19 [2018-11-10 12:33:55,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 12:33:55,025 INFO L225 Difference]: With dead ends: 22 [2018-11-10 12:33:55,025 INFO L226 Difference]: Without dead ends: 0 [2018-11-10 12:33:55,026 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=149, Unknown=1, NotChecked=26, Total=240 [2018-11-10 12:33:55,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-10 12:33:55,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-10 12:33:55,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-10 12:33:55,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-10 12:33:55,027 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2018-11-10 12:33:55,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 12:33:55,027 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-10 12:33:55,027 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-10 12:33:55,027 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-10 12:33:55,027 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-10 12:33:55,030 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 12:33:55 BoogieIcfgContainer [2018-11-10 12:33:55,030 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-10 12:33:55,030 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-10 12:33:55,031 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-10 12:33:55,031 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-10 12:33:55,031 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 12:33:54" (3/4) ... [2018-11-10 12:33:55,034 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-10 12:33:55,038 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-10 12:33:55,038 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure #Ultimate.C_memset [2018-11-10 12:33:55,039 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-10 12:33:55,042 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2018-11-10 12:33:55,042 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2018-11-10 12:33:55,042 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-11-10 12:33:55,042 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-10 12:33:55,065 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_8a7e7726-8a5d-49e8-9ff6-5fe3fc853b09/bin-2019/uautomizer/witness.graphml [2018-11-10 12:33:55,065 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-10 12:33:55,066 INFO L168 Benchmark]: Toolchain (without parser) took 1339.78 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.4 MB). Free memory was 960.3 MB in the beginning and 1.0 GB in the end (delta: -50.0 MB). Peak memory consumption was 87.4 MB. Max. memory is 11.5 GB. [2018-11-10 12:33:55,066 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 12:33:55,067 INFO L168 Benchmark]: CACSL2BoogieTranslator took 164.81 ms. Allocated memory is still 1.0 GB. Free memory was 960.3 MB in the beginning and 949.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-10 12:33:55,067 INFO L168 Benchmark]: Boogie Preprocessor took 18.75 ms. Allocated memory is still 1.0 GB. Free memory is still 949.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 12:33:55,067 INFO L168 Benchmark]: RCFGBuilder took 177.25 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.4 MB). Free memory was 946.9 MB in the beginning and 1.1 GB in the end (delta: -178.4 MB). Peak memory consumption was 19.5 MB. Max. memory is 11.5 GB. [2018-11-10 12:33:55,068 INFO L168 Benchmark]: TraceAbstraction took 941.37 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: 112.3 MB). Peak memory consumption was 112.3 MB. Max. memory is 11.5 GB. [2018-11-10 12:33:55,068 INFO L168 Benchmark]: Witness Printer took 34.49 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. [2018-11-10 12:33:55,070 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 164.81 ms. Allocated memory is still 1.0 GB. Free memory was 960.3 MB in the beginning and 949.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 18.75 ms. Allocated memory is still 1.0 GB. Free memory is still 949.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 177.25 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.4 MB). Free memory was 946.9 MB in the beginning and 1.1 GB in the end (delta: -178.4 MB). Peak memory consumption was 19.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 941.37 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: 112.3 MB). Peak memory consumption was 112.3 MB. Max. memory is 11.5 GB. * Witness Printer took 34.49 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, 0.9s OverallTime, 5 OverallIterations, 2 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 76 SDtfs, 29 SDslu, 128 SDs, 0 SdLazy, 100 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 67 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s 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, 0.3s 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...