./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/openbsd_cmemchr-alloca_true-valid-memsafety_true-termination.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_f8e70c03-1bc9-481b-8210-9f72e168e6a1/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_f8e70c03-1bc9-481b-8210-9f72e168e6a1/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_f8e70c03-1bc9-481b-8210-9f72e168e6a1/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_f8e70c03-1bc9-481b-8210-9f72e168e6a1/bin-2019/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/openbsd_cmemchr-alloca_true-valid-memsafety_true-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_f8e70c03-1bc9-481b-8210-9f72e168e6a1/bin-2019/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_f8e70c03-1bc9-481b-8210-9f72e168e6a1/bin-2019/utaipan --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d4019c4159483ac83115551cd48ccd0ba128dc3d .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-03 07:22:35,964 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-03 07:22:35,965 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-03 07:22:35,972 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-03 07:22:35,973 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-03 07:22:35,973 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-03 07:22:35,974 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-03 07:22:35,975 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-03 07:22:35,976 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-03 07:22:35,977 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-03 07:22:35,977 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-03 07:22:35,978 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-03 07:22:35,978 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-03 07:22:35,979 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-03 07:22:35,980 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-03 07:22:35,980 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-03 07:22:35,981 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-03 07:22:35,982 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-03 07:22:35,983 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-03 07:22:35,985 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-03 07:22:35,985 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-03 07:22:35,986 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-03 07:22:35,988 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-03 07:22:35,988 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-03 07:22:35,988 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-03 07:22:35,989 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-03 07:22:35,989 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-03 07:22:35,990 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-03 07:22:35,991 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-03 07:22:35,991 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-03 07:22:35,991 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-03 07:22:35,992 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-03 07:22:35,992 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-03 07:22:35,992 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-03 07:22:35,993 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-03 07:22:35,993 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-03 07:22:35,994 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_f8e70c03-1bc9-481b-8210-9f72e168e6a1/bin-2019/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2018-12-03 07:22:36,004 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-03 07:22:36,004 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-03 07:22:36,005 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-03 07:22:36,005 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-03 07:22:36,005 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-03 07:22:36,005 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-03 07:22:36,005 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-03 07:22:36,006 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-03 07:22:36,006 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-03 07:22:36,006 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-03 07:22:36,006 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-03 07:22:36,006 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-03 07:22:36,006 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-03 07:22:36,007 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-03 07:22:36,007 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-03 07:22:36,007 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-03 07:22:36,007 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-03 07:22:36,007 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-12-03 07:22:36,007 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-03 07:22:36,008 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-03 07:22:36,008 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-03 07:22:36,008 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-12-03 07:22:36,008 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-12-03 07:22:36,008 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-12-03 07:22:36,008 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-03 07:22:36,008 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-03 07:22:36,008 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-03 07:22:36,008 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-03 07:22:36,009 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-03 07:22:36,009 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-03 07:22:36,009 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-03 07:22:36,009 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-03 07:22:36,009 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-03 07:22:36,009 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-03 07:22:36,009 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-03 07:22:36,009 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-03 07:22:36,009 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_f8e70c03-1bc9-481b-8210-9f72e168e6a1/bin-2019/utaipan 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 -> Taipan 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 -> d4019c4159483ac83115551cd48ccd0ba128dc3d [2018-12-03 07:22:36,031 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-03 07:22:36,038 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-03 07:22:36,040 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-03 07:22:36,041 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-03 07:22:36,041 INFO L276 PluginConnector]: CDTParser initialized [2018-12-03 07:22:36,041 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_f8e70c03-1bc9-481b-8210-9f72e168e6a1/bin-2019/utaipan/../../sv-benchmarks/c/array-memsafety/openbsd_cmemchr-alloca_true-valid-memsafety_true-termination.i [2018-12-03 07:22:36,075 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_f8e70c03-1bc9-481b-8210-9f72e168e6a1/bin-2019/utaipan/data/260064f28/846f98af7eaa463ca5a3bea3095196da/FLAGa7428b36f [2018-12-03 07:22:36,464 INFO L307 CDTParser]: Found 1 translation units. [2018-12-03 07:22:36,465 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_f8e70c03-1bc9-481b-8210-9f72e168e6a1/sv-benchmarks/c/array-memsafety/openbsd_cmemchr-alloca_true-valid-memsafety_true-termination.i [2018-12-03 07:22:36,470 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_f8e70c03-1bc9-481b-8210-9f72e168e6a1/bin-2019/utaipan/data/260064f28/846f98af7eaa463ca5a3bea3095196da/FLAGa7428b36f [2018-12-03 07:22:36,814 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_f8e70c03-1bc9-481b-8210-9f72e168e6a1/bin-2019/utaipan/data/260064f28/846f98af7eaa463ca5a3bea3095196da [2018-12-03 07:22:36,816 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-03 07:22:36,817 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-03 07:22:36,818 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-03 07:22:36,818 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-03 07:22:36,820 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-03 07:22:36,820 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 07:22:36" (1/1) ... [2018-12-03 07:22:36,822 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b7c88b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 07:22:36, skipping insertion in model container [2018-12-03 07:22:36,822 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 07:22:36" (1/1) ... [2018-12-03 07:22:36,827 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-03 07:22:36,844 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-03 07:22:36,993 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-03 07:22:36,999 INFO L191 MainTranslator]: Completed pre-run [2018-12-03 07:22:37,056 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-03 07:22:37,076 INFO L195 MainTranslator]: Completed translation [2018-12-03 07:22:37,076 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 07:22:37 WrapperNode [2018-12-03 07:22:37,076 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-03 07:22:37,077 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-03 07:22:37,077 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-03 07:22:37,077 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-03 07:22:37,082 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 07:22:37" (1/1) ... [2018-12-03 07:22:37,089 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 07:22:37" (1/1) ... [2018-12-03 07:22:37,094 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-03 07:22:37,094 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-03 07:22:37,094 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-03 07:22:37,094 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-03 07:22:37,100 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 07:22:37" (1/1) ... [2018-12-03 07:22:37,100 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 07:22:37" (1/1) ... [2018-12-03 07:22:37,101 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 07:22:37" (1/1) ... [2018-12-03 07:22:37,101 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 07:22:37" (1/1) ... [2018-12-03 07:22:37,105 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 07:22:37" (1/1) ... [2018-12-03 07:22:37,108 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 07:22:37" (1/1) ... [2018-12-03 07:22:37,109 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 07:22:37" (1/1) ... [2018-12-03 07:22:37,110 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-03 07:22:37,110 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-03 07:22:37,110 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-03 07:22:37,110 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-03 07:22:37,111 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 07:22:37" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f8e70c03-1bc9-481b-8210-9f72e168e6a1/bin-2019/utaipan/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 [2018-12-03 07:22:37,142 INFO L130 BoogieDeclarations]: Found specification of procedure cmemchr [2018-12-03 07:22:37,142 INFO L138 BoogieDeclarations]: Found implementation of procedure cmemchr [2018-12-03 07:22:37,142 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-03 07:22:37,142 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-03 07:22:37,142 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-03 07:22:37,142 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-03 07:22:37,143 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-03 07:22:37,143 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-03 07:22:37,143 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-03 07:22:37,143 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-03 07:22:37,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-03 07:22:37,259 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-03 07:22:37,260 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-12-03 07:22:37,260 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 07:22:37 BoogieIcfgContainer [2018-12-03 07:22:37,260 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-03 07:22:37,261 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-03 07:22:37,261 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-03 07:22:37,263 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-03 07:22:37,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.12 07:22:36" (1/3) ... [2018-12-03 07:22:37,263 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f821c65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 07:22:37, skipping insertion in model container [2018-12-03 07:22:37,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 07:22:37" (2/3) ... [2018-12-03 07:22:37,264 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f821c65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 07:22:37, skipping insertion in model container [2018-12-03 07:22:37,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 07:22:37" (3/3) ... [2018-12-03 07:22:37,265 INFO L112 eAbstractionObserver]: Analyzing ICFG openbsd_cmemchr-alloca_true-valid-memsafety_true-termination.i [2018-12-03 07:22:37,271 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-03 07:22:37,279 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-12-03 07:22:37,288 INFO L257 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2018-12-03 07:22:37,302 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-03 07:22:37,303 INFO L383 AbstractCegarLoop]: Hoare is false [2018-12-03 07:22:37,303 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-03 07:22:37,303 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-03 07:22:37,303 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-03 07:22:37,303 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-03 07:22:37,303 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-03 07:22:37,303 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-03 07:22:37,311 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2018-12-03 07:22:37,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-12-03 07:22:37,318 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 07:22:37,318 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 07:22:37,320 INFO L423 AbstractCegarLoop]: === Iteration 1 === [cmemchrErr1REQUIRES_VIOLATION, cmemchrErr0REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-12-03 07:22:37,323 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 07:22:37,323 INFO L82 PathProgramCache]: Analyzing trace with hash 974657, now seen corresponding path program 1 times [2018-12-03 07:22:37,324 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 07:22:37,352 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 07:22:37,352 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 07:22:37,352 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 07:22:37,352 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 07:22:37,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 07:22:37,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 07:22:37,451 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 07:22:37,451 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-12-03 07:22:37,451 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 07:22:37,454 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-03 07:22:37,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-03 07:22:37,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-12-03 07:22:37,464 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 7 states. [2018-12-03 07:22:37,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 07:22:37,556 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2018-12-03 07:22:37,556 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-03 07:22:37,557 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2018-12-03 07:22:37,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 07:22:37,566 INFO L225 Difference]: With dead ends: 30 [2018-12-03 07:22:37,566 INFO L226 Difference]: Without dead ends: 27 [2018-12-03 07:22:37,568 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-12-03 07:22:37,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-12-03 07:22:37,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 24. [2018-12-03 07:22:37,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-12-03 07:22:37,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2018-12-03 07:22:37,592 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 14 [2018-12-03 07:22:37,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 07:22:37,592 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2018-12-03 07:22:37,592 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-03 07:22:37,592 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2018-12-03 07:22:37,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-12-03 07:22:37,592 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 07:22:37,593 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 07:22:37,593 INFO L423 AbstractCegarLoop]: === Iteration 2 === [cmemchrErr1REQUIRES_VIOLATION, cmemchrErr0REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-12-03 07:22:37,593 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 07:22:37,593 INFO L82 PathProgramCache]: Analyzing trace with hash 974658, now seen corresponding path program 1 times [2018-12-03 07:22:37,593 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 07:22:37,594 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 07:22:37,594 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 07:22:37,594 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 07:22:37,595 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 07:22:37,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 07:22:37,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 07:22:37,675 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 07:22:37,675 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-12-03 07:22:37,676 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 07:22:37,676 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-03 07:22:37,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-03 07:22:37,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-12-03 07:22:37,677 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand 8 states. [2018-12-03 07:22:37,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 07:22:37,732 INFO L93 Difference]: Finished difference Result 27 states and 32 transitions. [2018-12-03 07:22:37,733 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-03 07:22:37,733 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2018-12-03 07:22:37,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 07:22:37,734 INFO L225 Difference]: With dead ends: 27 [2018-12-03 07:22:37,734 INFO L226 Difference]: Without dead ends: 27 [2018-12-03 07:22:37,735 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2018-12-03 07:22:37,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-12-03 07:22:37,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2018-12-03 07:22:37,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-12-03 07:22:37,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2018-12-03 07:22:37,738 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 14 [2018-12-03 07:22:37,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 07:22:37,738 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2018-12-03 07:22:37,738 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-03 07:22:37,739 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2018-12-03 07:22:37,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-12-03 07:22:37,739 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 07:22:37,739 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 07:22:37,739 INFO L423 AbstractCegarLoop]: === Iteration 3 === [cmemchrErr1REQUIRES_VIOLATION, cmemchrErr0REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-12-03 07:22:37,740 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 07:22:37,740 INFO L82 PathProgramCache]: Analyzing trace with hash -350246811, now seen corresponding path program 1 times [2018-12-03 07:22:37,740 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 07:22:37,741 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 07:22:37,741 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 07:22:37,741 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 07:22:37,741 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 07:22:37,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 07:22:37,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 07:22:37,783 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 07:22:37,783 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-03 07:22:37,783 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 07:22:37,783 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-03 07:22:37,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-03 07:22:37,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-03 07:22:37,783 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 5 states. [2018-12-03 07:22:37,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 07:22:37,805 INFO L93 Difference]: Finished difference Result 38 states and 44 transitions. [2018-12-03 07:22:37,805 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-03 07:22:37,805 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2018-12-03 07:22:37,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 07:22:37,806 INFO L225 Difference]: With dead ends: 38 [2018-12-03 07:22:37,807 INFO L226 Difference]: Without dead ends: 38 [2018-12-03 07:22:37,807 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-12-03 07:22:37,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-12-03 07:22:37,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 31. [2018-12-03 07:22:37,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-12-03 07:22:37,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2018-12-03 07:22:37,815 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 17 [2018-12-03 07:22:37,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 07:22:37,815 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2018-12-03 07:22:37,815 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-03 07:22:37,815 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2018-12-03 07:22:37,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-12-03 07:22:37,816 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 07:22:37,817 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 07:22:37,817 INFO L423 AbstractCegarLoop]: === Iteration 4 === [cmemchrErr1REQUIRES_VIOLATION, cmemchrErr0REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-12-03 07:22:37,817 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 07:22:37,817 INFO L82 PathProgramCache]: Analyzing trace with hash -743273821, now seen corresponding path program 1 times [2018-12-03 07:22:37,817 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 07:22:37,818 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 07:22:37,818 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 07:22:37,818 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 07:22:37,818 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 07:22:37,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 07:22:37,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 07:22:37,858 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 07:22:37,858 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-03 07:22:37,858 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 07:22:37,858 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-03 07:22:37,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-03 07:22:37,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-03 07:22:37,859 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand 4 states. [2018-12-03 07:22:37,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 07:22:37,884 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2018-12-03 07:22:37,884 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-03 07:22:37,884 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2018-12-03 07:22:37,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 07:22:37,885 INFO L225 Difference]: With dead ends: 30 [2018-12-03 07:22:37,885 INFO L226 Difference]: Without dead ends: 22 [2018-12-03 07:22:37,885 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-03 07:22:37,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-12-03 07:22:37,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2018-12-03 07:22:37,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-12-03 07:22:37,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2018-12-03 07:22:37,887 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 17 [2018-12-03 07:22:37,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 07:22:37,887 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2018-12-03 07:22:37,887 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-03 07:22:37,887 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2018-12-03 07:22:37,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-12-03 07:22:37,888 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 07:22:37,888 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 07:22:37,888 INFO L423 AbstractCegarLoop]: === Iteration 5 === [cmemchrErr1REQUIRES_VIOLATION, cmemchrErr0REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-12-03 07:22:37,888 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 07:22:37,889 INFO L82 PathProgramCache]: Analyzing trace with hash -815298698, now seen corresponding path program 1 times [2018-12-03 07:22:37,889 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 07:22:37,889 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 07:22:37,889 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 07:22:37,889 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 07:22:37,890 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 07:22:37,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 07:22:37,982 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 07:22:37,982 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 07:22:37,982 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-12-03 07:22:37,982 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 07:22:37,982 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-03 07:22:37,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-03 07:22:37,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-12-03 07:22:37,983 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand 7 states. [2018-12-03 07:22:38,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 07:22:38,026 INFO L93 Difference]: Finished difference Result 29 states and 30 transitions. [2018-12-03 07:22:38,026 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-03 07:22:38,027 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2018-12-03 07:22:38,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 07:22:38,027 INFO L225 Difference]: With dead ends: 29 [2018-12-03 07:22:38,027 INFO L226 Difference]: Without dead ends: 20 [2018-12-03 07:22:38,027 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2018-12-03 07:22:38,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-12-03 07:22:38,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2018-12-03 07:22:38,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-12-03 07:22:38,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2018-12-03 07:22:38,029 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 19 [2018-12-03 07:22:38,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 07:22:38,029 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2018-12-03 07:22:38,029 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-03 07:22:38,029 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2018-12-03 07:22:38,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-12-03 07:22:38,029 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 07:22:38,030 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 07:22:38,030 INFO L423 AbstractCegarLoop]: === Iteration 6 === [cmemchrErr1REQUIRES_VIOLATION, cmemchrErr0REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-12-03 07:22:38,030 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 07:22:38,030 INFO L82 PathProgramCache]: Analyzing trace with hash -557133260, now seen corresponding path program 1 times [2018-12-03 07:22:38,030 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 07:22:38,030 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 07:22:38,031 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 07:22:38,031 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 07:22:38,031 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 07:22:38,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 07:22:38,161 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 07:22:38,161 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-03 07:22:38,161 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-03 07:22:38,162 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 20 with the following transitions: [2018-12-03 07:22:38,163 INFO L205 CegarAbsIntRunner]: [0], [3], [7], [8], [10], [14], [16], [21], [30], [31], [35], [38], [46], [48], [53], [54], [55], [57] [2018-12-03 07:22:38,183 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-03 07:22:38,183 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-03 07:22:38,276 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-12-03 07:22:38,277 INFO L272 AbstractInterpreter]: Visited 18 different actions 23 times. Merged at 5 different actions 5 times. Never widened. Performed 176 root evaluator evaluations with a maximum evaluation depth of 4. Performed 176 inverse root evaluator evaluations with a maximum inverse evaluation depth of 4. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-12-03 07:22:38,282 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 07:22:38,283 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-12-03 07:22:38,283 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-03 07:22:38,284 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f8e70c03-1bc9-481b-8210-9f72e168e6a1/bin-2019/utaipan/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 [2018-12-03 07:22:38,293 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 07:22:38,293 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-03 07:22:38,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 07:22:38,314 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-03 07:22:38,340 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-12-03 07:22:38,341 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-03 07:22:38,344 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-03 07:22:38,344 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-12-03 07:22:38,506 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 07:22:38,506 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-03 07:22:38,762 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 07:22:38,776 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-03 07:22:38,776 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 29 [2018-12-03 07:22:38,777 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-03 07:22:38,777 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-12-03 07:22:38,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-12-03 07:22:38,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=771, Unknown=0, NotChecked=0, Total=870 [2018-12-03 07:22:38,777 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 21 states. [2018-12-03 07:22:39,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 07:22:39,096 INFO L93 Difference]: Finished difference Result 26 states and 27 transitions. [2018-12-03 07:22:39,097 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-12-03 07:22:39,097 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 19 [2018-12-03 07:22:39,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 07:22:39,097 INFO L225 Difference]: With dead ends: 26 [2018-12-03 07:22:39,097 INFO L226 Difference]: Without dead ends: 26 [2018-12-03 07:22:39,098 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=192, Invalid=1214, Unknown=0, NotChecked=0, Total=1406 [2018-12-03 07:22:39,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-12-03 07:22:39,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2018-12-03 07:22:39,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-12-03 07:22:39,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2018-12-03 07:22:39,100 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 19 [2018-12-03 07:22:39,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 07:22:39,100 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2018-12-03 07:22:39,100 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-12-03 07:22:39,100 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2018-12-03 07:22:39,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-12-03 07:22:39,101 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 07:22:39,101 INFO L402 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 07:22:39,101 INFO L423 AbstractCegarLoop]: === Iteration 7 === [cmemchrErr1REQUIRES_VIOLATION, cmemchrErr0REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-12-03 07:22:39,101 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 07:22:39,101 INFO L82 PathProgramCache]: Analyzing trace with hash 2135399364, now seen corresponding path program 2 times [2018-12-03 07:22:39,101 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 07:22:39,102 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 07:22:39,102 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 07:22:39,102 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 07:22:39,102 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 07:22:39,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 07:22:39,247 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 07:22:39,247 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-03 07:22:39,248 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-03 07:22:39,248 INFO L187 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-12-03 07:22:39,248 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-12-03 07:22:39,248 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-03 07:22:39,248 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f8e70c03-1bc9-481b-8210-9f72e168e6a1/bin-2019/utaipan/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 [2018-12-03 07:22:39,254 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-03 07:22:39,254 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-12-03 07:22:39,269 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-12-03 07:22:39,270 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-03 07:22:39,271 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-03 07:22:39,274 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-12-03 07:22:39,274 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-03 07:22:39,277 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-03 07:22:39,277 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-12-03 07:22:39,426 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 07:22:39,426 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-03 07:22:39,682 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 07:22:39,697 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-03 07:22:39,697 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 31 [2018-12-03 07:22:39,697 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-03 07:22:39,697 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-12-03 07:22:39,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-12-03 07:22:39,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=885, Unknown=0, NotChecked=0, Total=992 [2018-12-03 07:22:39,698 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand 21 states. [2018-12-03 07:22:40,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 07:22:40,247 INFO L93 Difference]: Finished difference Result 30 states and 31 transitions. [2018-12-03 07:22:40,248 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-12-03 07:22:40,248 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 24 [2018-12-03 07:22:40,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 07:22:40,248 INFO L225 Difference]: With dead ends: 30 [2018-12-03 07:22:40,248 INFO L226 Difference]: Without dead ends: 0 [2018-12-03 07:22:40,249 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 27 SyntacticMatches, 3 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=274, Invalid=1888, Unknown=0, NotChecked=0, Total=2162 [2018-12-03 07:22:40,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-03 07:22:40,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-03 07:22:40,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-03 07:22:40,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-03 07:22:40,250 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 24 [2018-12-03 07:22:40,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 07:22:40,250 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-03 07:22:40,250 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-12-03 07:22:40,250 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-03 07:22:40,250 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-03 07:22:40,254 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.12 07:22:40 BoogieIcfgContainer [2018-12-03 07:22:40,254 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-03 07:22:40,254 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-03 07:22:40,254 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-03 07:22:40,254 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-03 07:22:40,255 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 07:22:37" (3/4) ... [2018-12-03 07:22:40,257 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-03 07:22:40,261 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure cmemchr [2018-12-03 07:22:40,261 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-12-03 07:22:40,261 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-12-03 07:22:40,264 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2018-12-03 07:22:40,264 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2018-12-03 07:22:40,264 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-12-03 07:22:40,289 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_f8e70c03-1bc9-481b-8210-9f72e168e6a1/bin-2019/utaipan/witness.graphml [2018-12-03 07:22:40,289 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-03 07:22:40,290 INFO L168 Benchmark]: Toolchain (without parser) took 3473.09 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 175.1 MB). Free memory was 952.4 MB in the beginning and 866.5 MB in the end (delta: 85.9 MB). Peak memory consumption was 261.0 MB. Max. memory is 11.5 GB. [2018-12-03 07:22:40,290 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-03 07:22:40,291 INFO L168 Benchmark]: CACSL2BoogieTranslator took 258.91 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 62.9 MB). Free memory was 952.4 MB in the beginning and 1.0 GB in the end (delta: -93.3 MB). Peak memory consumption was 24.7 MB. Max. memory is 11.5 GB. [2018-12-03 07:22:40,291 INFO L168 Benchmark]: Boogie Procedure Inliner took 17.25 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-03 07:22:40,291 INFO L168 Benchmark]: Boogie Preprocessor took 15.75 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 3.6 MB). Peak memory consumption was 3.6 MB. Max. memory is 11.5 GB. [2018-12-03 07:22:40,292 INFO L168 Benchmark]: RCFGBuilder took 150.03 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 19.4 MB). Peak memory consumption was 19.4 MB. Max. memory is 11.5 GB. [2018-12-03 07:22:40,292 INFO L168 Benchmark]: TraceAbstraction took 2993.20 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 112.2 MB). Free memory was 1.0 GB in the beginning and 875.5 MB in the end (delta: 147.1 MB). Peak memory consumption was 259.3 MB. Max. memory is 11.5 GB. [2018-12-03 07:22:40,292 INFO L168 Benchmark]: Witness Printer took 35.12 ms. Allocated memory is still 1.2 GB. Free memory was 875.5 MB in the beginning and 866.5 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 11.5 GB. [2018-12-03 07:22:40,294 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 258.91 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 62.9 MB). Free memory was 952.4 MB in the beginning and 1.0 GB in the end (delta: -93.3 MB). Peak memory consumption was 24.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 17.25 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 15.75 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 3.6 MB). Peak memory consumption was 3.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 150.03 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 19.4 MB). Peak memory consumption was 19.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2993.20 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 112.2 MB). Free memory was 1.0 GB in the beginning and 875.5 MB in the end (delta: 147.1 MB). Peak memory consumption was 259.3 MB. Max. memory is 11.5 GB. * Witness Printer took 35.12 ms. Allocated memory is still 1.2 GB. Free memory was 875.5 MB in the beginning and 866.5 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 546]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 546]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 552]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 28 locations, 3 error locations. SAFE Result, 2.9s OverallTime, 7 OverallIterations, 3 TraceHistogramMax, 1.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 136 SDtfs, 160 SDslu, 652 SDs, 0 SdLazy, 538 SolverSat, 45 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 169 GetRequests, 55 SyntacticMatches, 3 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 566 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.1s AbstIntTime, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 14 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 167 NumberOfCodeBlocks, 167 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 199 ConstructedInterpolants, 2 QuantifiedInterpolants, 35317 SizeOfPredicates, 24 NumberOfNonLiveVariables, 228 ConjunctsInSsa, 91 ConjunctsInUnsatCore, 11 InterpolantComputations, 5 PerfectInterpolantSequences, 2/35 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...