./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-properties/splice_true-unreach-call_false-valid-memtrack.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_ba4c3066-badd-4058-8398-235337c81b3f/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_ba4c3066-badd-4058-8398-235337c81b3f/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_ba4c3066-badd-4058-8398-235337c81b3f/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_ba4c3066-badd-4058-8398-235337c81b3f/bin-2019/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-properties/splice_true-unreach-call_false-valid-memtrack.i -s /tmp/vcloud-vcloud-master/worker/working_dir_ba4c3066-badd-4058-8398-235337c81b3f/bin-2019/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_ba4c3066-badd-4058-8398-235337c81b3f/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 bab7ebbfb2d1b8a4018ae99e314147bb3726df4b ................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_ba4c3066-badd-4058-8398-235337c81b3f/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_ba4c3066-badd-4058-8398-235337c81b3f/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_ba4c3066-badd-4058-8398-235337c81b3f/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_ba4c3066-badd-4058-8398-235337c81b3f/bin-2019/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-properties/splice_true-unreach-call_false-valid-memtrack.i -s /tmp/vcloud-vcloud-master/worker/working_dir_ba4c3066-badd-4058-8398-235337c81b3f/bin-2019/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_ba4c3066-badd-4058-8398-235337c81b3f/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 bab7ebbfb2d1b8a4018ae99e314147bb3726df4b ............................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-09 19:29:09,380 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 19:29:09,381 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 19:29:09,387 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 19:29:09,387 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 19:29:09,388 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 19:29:09,389 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 19:29:09,390 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 19:29:09,391 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 19:29:09,391 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 19:29:09,391 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 19:29:09,392 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 19:29:09,392 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 19:29:09,393 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 19:29:09,393 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 19:29:09,393 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 19:29:09,394 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 19:29:09,395 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 19:29:09,396 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 19:29:09,396 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 19:29:09,397 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 19:29:09,398 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 19:29:09,399 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 19:29:09,399 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 19:29:09,399 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 19:29:09,400 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 19:29:09,400 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 19:29:09,400 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 19:29:09,401 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 19:29:09,401 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 19:29:09,402 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 19:29:09,402 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 19:29:09,402 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 19:29:09,402 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 19:29:09,403 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 19:29:09,403 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 19:29:09,403 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_ba4c3066-badd-4058-8398-235337c81b3f/bin-2019/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2018-12-09 19:29:09,411 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 19:29:09,411 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 19:29:09,411 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 19:29:09,411 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-09 19:29:09,411 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-09 19:29:09,411 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-09 19:29:09,412 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-09 19:29:09,412 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-09 19:29:09,412 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-09 19:29:09,412 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-09 19:29:09,412 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-09 19:29:09,412 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-09 19:29:09,412 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-09 19:29:09,412 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-09 19:29:09,412 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-09 19:29:09,413 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 19:29:09,413 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-09 19:29:09,413 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-12-09 19:29:09,413 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-09 19:29:09,413 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-09 19:29:09,413 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 19:29:09,413 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-12-09 19:29:09,413 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-12-09 19:29:09,413 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-12-09 19:29:09,413 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 19:29:09,413 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-09 19:29:09,413 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 19:29:09,413 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 19:29:09,414 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 19:29:09,414 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-09 19:29:09,414 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 19:29:09,414 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 19:29:09,414 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 19:29:09,414 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-09 19:29:09,414 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 19:29:09,414 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-09 19:29:09,414 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_ba4c3066-badd-4058-8398-235337c81b3f/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 -> bab7ebbfb2d1b8a4018ae99e314147bb3726df4b [2018-12-09 19:29:09,432 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 19:29:09,440 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 19:29:09,443 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 19:29:09,444 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 19:29:09,444 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 19:29:09,445 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_ba4c3066-badd-4058-8398-235337c81b3f/bin-2019/utaipan/../../sv-benchmarks/c/list-properties/splice_true-unreach-call_false-valid-memtrack.i [2018-12-09 19:29:09,481 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_ba4c3066-badd-4058-8398-235337c81b3f/bin-2019/utaipan/data/ac02a0028/7d9f84e5cf634c658e8c781d9281b561/FLAG73d74c789 [2018-12-09 19:29:09,934 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 19:29:09,935 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_ba4c3066-badd-4058-8398-235337c81b3f/sv-benchmarks/c/list-properties/splice_true-unreach-call_false-valid-memtrack.i [2018-12-09 19:29:09,941 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_ba4c3066-badd-4058-8398-235337c81b3f/bin-2019/utaipan/data/ac02a0028/7d9f84e5cf634c658e8c781d9281b561/FLAG73d74c789 [2018-12-09 19:29:09,948 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_ba4c3066-badd-4058-8398-235337c81b3f/bin-2019/utaipan/data/ac02a0028/7d9f84e5cf634c658e8c781d9281b561 [2018-12-09 19:29:09,950 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 19:29:09,951 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 19:29:09,951 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 19:29:09,951 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 19:29:09,953 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 19:29:09,954 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:29:09" (1/1) ... [2018-12-09 19:29:09,955 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4834854b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:29:09, skipping insertion in model container [2018-12-09 19:29:09,955 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:29:09" (1/1) ... [2018-12-09 19:29:09,959 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 19:29:09,978 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 19:29:10,120 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 19:29:10,156 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 19:29:10,181 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 19:29:10,202 INFO L195 MainTranslator]: Completed translation [2018-12-09 19:29:10,202 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:29:10 WrapperNode [2018-12-09 19:29:10,202 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 19:29:10,203 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 19:29:10,203 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 19:29:10,203 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 19:29:10,208 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:29:10" (1/1) ... [2018-12-09 19:29:10,216 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:29:10" (1/1) ... [2018-12-09 19:29:10,221 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 19:29:10,221 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 19:29:10,221 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 19:29:10,221 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 19:29:10,227 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:29:10" (1/1) ... [2018-12-09 19:29:10,227 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:29:10" (1/1) ... [2018-12-09 19:29:10,229 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:29:10" (1/1) ... [2018-12-09 19:29:10,229 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:29:10" (1/1) ... [2018-12-09 19:29:10,235 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:29:10" (1/1) ... [2018-12-09 19:29:10,238 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:29:10" (1/1) ... [2018-12-09 19:29:10,239 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:29:10" (1/1) ... [2018-12-09 19:29:10,241 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 19:29:10,241 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 19:29:10,241 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 19:29:10,241 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 19:29:10,242 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:29:10" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ba4c3066-badd-4058-8398-235337c81b3f/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 [2018-12-09 19:29:10,273 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2018-12-09 19:29:10,273 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2018-12-09 19:29:10,273 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-09 19:29:10,273 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-09 19:29:10,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-09 19:29:10,273 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-09 19:29:10,273 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-09 19:29:10,273 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-09 19:29:10,273 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-09 19:29:10,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-12-09 19:29:10,273 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-12-09 19:29:10,273 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 19:29:10,273 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 19:29:10,494 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 19:29:10,494 INFO L280 CfgBuilder]: Removed 4 assue(true) statements. [2018-12-09 19:29:10,494 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:29:10 BoogieIcfgContainer [2018-12-09 19:29:10,494 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 19:29:10,495 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-09 19:29:10,495 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-09 19:29:10,497 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-09 19:29:10,497 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 07:29:09" (1/3) ... [2018-12-09 19:29:10,497 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@255782c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:29:10, skipping insertion in model container [2018-12-09 19:29:10,497 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:29:10" (2/3) ... [2018-12-09 19:29:10,497 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@255782c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:29:10, skipping insertion in model container [2018-12-09 19:29:10,497 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:29:10" (3/3) ... [2018-12-09 19:29:10,498 INFO L112 eAbstractionObserver]: Analyzing ICFG splice_true-unreach-call_false-valid-memtrack.i [2018-12-09 19:29:10,505 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-09 19:29:10,509 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 29 error locations. [2018-12-09 19:29:10,518 INFO L257 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2018-12-09 19:29:10,532 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-09 19:29:10,532 INFO L383 AbstractCegarLoop]: Hoare is false [2018-12-09 19:29:10,533 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-09 19:29:10,533 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 19:29:10,533 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 19:29:10,533 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-09 19:29:10,533 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 19:29:10,533 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-09 19:29:10,542 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states. [2018-12-09 19:29:10,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-12-09 19:29:10,547 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 19:29:10,547 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 19:29:10,549 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr28ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION]=== [2018-12-09 19:29:10,552 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 19:29:10,552 INFO L82 PathProgramCache]: Analyzing trace with hash -1363911312, now seen corresponding path program 1 times [2018-12-09 19:29:10,553 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 19:29:10,580 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 19:29:10,581 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 19:29:10,581 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 19:29:10,581 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 19:29:10,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 19:29:10,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 19:29:10,623 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 19:29:10,624 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-09 19:29:10,624 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 19:29:10,626 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-09 19:29:10,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-09 19:29:10,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-09 19:29:10,636 INFO L87 Difference]: Start difference. First operand 83 states. Second operand 2 states. [2018-12-09 19:29:10,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 19:29:10,647 INFO L93 Difference]: Finished difference Result 83 states and 92 transitions. [2018-12-09 19:29:10,648 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-09 19:29:10,648 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-12-09 19:29:10,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 19:29:10,653 INFO L225 Difference]: With dead ends: 83 [2018-12-09 19:29:10,653 INFO L226 Difference]: Without dead ends: 75 [2018-12-09 19:29:10,654 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-09 19:29:10,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2018-12-09 19:29:10,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2018-12-09 19:29:10,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-12-09 19:29:10,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 81 transitions. [2018-12-09 19:29:10,676 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 81 transitions. Word has length 10 [2018-12-09 19:29:10,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 19:29:10,676 INFO L480 AbstractCegarLoop]: Abstraction has 75 states and 81 transitions. [2018-12-09 19:29:10,676 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-09 19:29:10,676 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 81 transitions. [2018-12-09 19:29:10,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-12-09 19:29:10,676 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 19:29:10,677 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 19:29:10,677 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr28ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION]=== [2018-12-09 19:29:10,677 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 19:29:10,677 INFO L82 PathProgramCache]: Analyzing trace with hash 668386638, now seen corresponding path program 1 times [2018-12-09 19:29:10,677 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 19:29:10,678 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 19:29:10,678 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 19:29:10,678 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 19:29:10,678 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 19:29:10,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 19:29:10,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 19:29:10,719 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 19:29:10,719 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-09 19:29:10,719 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 19:29:10,720 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 19:29:10,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 19:29:10,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 19:29:10,720 INFO L87 Difference]: Start difference. First operand 75 states and 81 transitions. Second operand 4 states. [2018-12-09 19:29:10,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 19:29:10,815 INFO L93 Difference]: Finished difference Result 82 states and 89 transitions. [2018-12-09 19:29:10,815 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 19:29:10,815 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2018-12-09 19:29:10,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 19:29:10,816 INFO L225 Difference]: With dead ends: 82 [2018-12-09 19:29:10,816 INFO L226 Difference]: Without dead ends: 82 [2018-12-09 19:29:10,817 INFO L631 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 [2018-12-09 19:29:10,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2018-12-09 19:29:10,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 76. [2018-12-09 19:29:10,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2018-12-09 19:29:10,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 88 transitions. [2018-12-09 19:29:10,823 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 88 transitions. Word has length 11 [2018-12-09 19:29:10,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 19:29:10,823 INFO L480 AbstractCegarLoop]: Abstraction has 76 states and 88 transitions. [2018-12-09 19:29:10,823 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 19:29:10,824 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 88 transitions. [2018-12-09 19:29:10,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-12-09 19:29:10,824 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 19:29:10,824 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 19:29:10,824 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr28ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION]=== [2018-12-09 19:29:10,824 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 19:29:10,825 INFO L82 PathProgramCache]: Analyzing trace with hash 668386639, now seen corresponding path program 1 times [2018-12-09 19:29:10,825 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 19:29:10,825 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 19:29:10,826 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 19:29:10,826 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 19:29:10,826 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 19:29:10,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 19:29:10,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 19:29:10,866 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 19:29:10,867 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-09 19:29:10,867 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 19:29:10,867 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 19:29:10,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 19:29:10,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 19:29:10,867 INFO L87 Difference]: Start difference. First operand 76 states and 88 transitions. Second operand 4 states. [2018-12-09 19:29:10,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 19:29:10,953 INFO L93 Difference]: Finished difference Result 90 states and 99 transitions. [2018-12-09 19:29:10,953 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 19:29:10,953 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2018-12-09 19:29:10,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 19:29:10,954 INFO L225 Difference]: With dead ends: 90 [2018-12-09 19:29:10,954 INFO L226 Difference]: Without dead ends: 90 [2018-12-09 19:29:10,954 INFO L631 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 [2018-12-09 19:29:10,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2018-12-09 19:29:10,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 83. [2018-12-09 19:29:10,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-12-09 19:29:10,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 92 transitions. [2018-12-09 19:29:10,957 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 92 transitions. Word has length 11 [2018-12-09 19:29:10,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 19:29:10,958 INFO L480 AbstractCegarLoop]: Abstraction has 83 states and 92 transitions. [2018-12-09 19:29:10,958 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 19:29:10,958 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 92 transitions. [2018-12-09 19:29:10,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-12-09 19:29:10,958 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 19:29:10,958 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 19:29:10,958 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr28ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION]=== [2018-12-09 19:29:10,958 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 19:29:10,958 INFO L82 PathProgramCache]: Analyzing trace with hash 437982411, now seen corresponding path program 1 times [2018-12-09 19:29:10,958 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 19:29:10,959 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 19:29:10,959 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 19:29:10,959 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 19:29:10,959 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 19:29:10,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 19:29:10,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 19:29:10,987 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-09 19:29:10,994 WARN L416 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-12-09 19:29:11,003 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 07:29:11 BoogieIcfgContainer [2018-12-09 19:29:11,003 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-09 19:29:11,003 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-09 19:29:11,003 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-09 19:29:11,003 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-09 19:29:11,004 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:29:10" (3/4) ... [2018-12-09 19:29:11,006 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-12-09 19:29:11,006 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-09 19:29:11,007 INFO L168 Benchmark]: Toolchain (without parser) took 1056.45 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 77.1 MB). Free memory was 953.4 MB in the beginning and 942.6 MB in the end (delta: 10.9 MB). Peak memory consumption was 87.9 MB. Max. memory is 11.5 GB. [2018-12-09 19:29:11,007 INFO L168 Benchmark]: CDTParser took 0.17 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. [2018-12-09 19:29:11,008 INFO L168 Benchmark]: CACSL2BoogieTranslator took 251.65 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 77.1 MB). Free memory was 953.4 MB in the beginning and 1.1 GB in the end (delta: -106.7 MB). Peak memory consumption was 31.1 MB. Max. memory is 11.5 GB. [2018-12-09 19:29:11,008 INFO L168 Benchmark]: Boogie Procedure Inliner took 17.70 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 19:29:11,008 INFO L168 Benchmark]: Boogie Preprocessor took 19.91 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 19:29:11,009 INFO L168 Benchmark]: RCFGBuilder took 253.27 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 33.5 MB). Peak memory consumption was 33.5 MB. Max. memory is 11.5 GB. [2018-12-09 19:29:11,009 INFO L168 Benchmark]: TraceAbstraction took 508.27 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 942.6 MB in the end (delta: 84.1 MB). Peak memory consumption was 84.1 MB. Max. memory is 11.5 GB. [2018-12-09 19:29:11,009 INFO L168 Benchmark]: Witness Printer took 2.94 ms. Allocated memory is still 1.1 GB. Free memory is still 942.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 19:29:11,011 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 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 251.65 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 77.1 MB). Free memory was 953.4 MB in the beginning and 1.1 GB in the end (delta: -106.7 MB). Peak memory consumption was 31.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 17.70 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 19.91 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 253.27 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 33.5 MB). Peak memory consumption was 33.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 508.27 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 942.6 MB in the end (delta: 84.1 MB). Peak memory consumption was 84.1 MB. Max. memory is 11.5 GB. * Witness Printer took 2.94 ms. Allocated memory is still 1.1 GB. Free memory is still 942.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 626]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 626. Possible FailurePath: [L627] int flag = 1; [L628] List a = (List) malloc(sizeof(struct node)); VAL [a={12:0}, flag=1, malloc(sizeof(struct node))={12:0}] [L629] COND FALSE !(a == 0) VAL [a={12:0}, flag=1, malloc(sizeof(struct node))={12:0}] [L630] List t; [L631] List l1; [L632] List l2; [L633] List b; [L634] List u; [L635] List p = a; VAL [a={12:0}, flag=1, malloc(sizeof(struct node))={12:0}, p={12:0}] [L636] COND FALSE !(__VERIFIER_nondet_int()) [L649] p->h = 3 VAL [a={12:0}, flag=1, malloc(sizeof(struct node))={12:0}, p={12:0}] [L650] EXPR a->h VAL [a={12:0}, a->h=3, flag=1, malloc(sizeof(struct node))={12:0}, p={12:0}] [L650] COND TRUE a->h == 3 [L650] return 0; VAL [\result=0, a={12:0}, flag=1, malloc(sizeof(struct node))={12:0}, p={12:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 85 locations, 29 error locations. UNSAFE Result, 0.4s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 171 SDtfs, 219 SDslu, 50 SDs, 0 SdLazy, 148 SolverSat, 33 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=83occurred 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, 3 MinimizatonAttempts, 13 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 46 NumberOfCodeBlocks, 46 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 29 ConstructedInterpolants, 0 QuantifiedInterpolants, 881 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.23-635dfa2 [2018-12-09 19:29:12,335 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 19:29:12,336 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 19:29:12,342 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 19:29:12,342 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 19:29:12,343 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 19:29:12,343 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 19:29:12,344 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 19:29:12,345 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 19:29:12,345 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 19:29:12,345 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 19:29:12,346 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 19:29:12,346 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 19:29:12,346 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 19:29:12,347 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 19:29:12,347 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 19:29:12,348 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 19:29:12,348 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 19:29:12,349 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 19:29:12,350 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 19:29:12,351 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 19:29:12,351 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 19:29:12,352 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 19:29:12,353 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 19:29:12,353 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 19:29:12,353 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 19:29:12,354 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 19:29:12,354 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 19:29:12,354 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 19:29:12,355 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 19:29:12,355 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 19:29:12,355 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 19:29:12,355 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 19:29:12,356 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 19:29:12,356 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 19:29:12,356 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 19:29:12,357 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_ba4c3066-badd-4058-8398-235337c81b3f/bin-2019/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2018-12-09 19:29:12,364 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 19:29:12,364 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 19:29:12,365 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 19:29:12,365 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-09 19:29:12,365 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-09 19:29:12,365 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-09 19:29:12,365 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-09 19:29:12,365 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-09 19:29:12,365 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-09 19:29:12,365 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-09 19:29:12,366 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-09 19:29:12,366 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-09 19:29:12,366 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 19:29:12,366 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-09 19:29:12,366 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-12-09 19:29:12,366 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-09 19:29:12,366 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-09 19:29:12,366 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 19:29:12,366 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-12-09 19:29:12,366 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-12-09 19:29:12,366 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-12-09 19:29:12,367 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 19:29:12,367 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-12-09 19:29:12,367 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-12-09 19:29:12,367 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-09 19:29:12,367 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-09 19:29:12,367 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 19:29:12,367 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 19:29:12,367 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 19:29:12,367 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-09 19:29:12,367 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 19:29:12,367 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 19:29:12,367 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 19:29:12,368 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-12-09 19:29:12,368 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 19:29:12,368 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-12-09 19:29:12,368 INFO L133 SettingsManager]: * Logic for external solver=AUFBV 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_ba4c3066-badd-4058-8398-235337c81b3f/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 -> bab7ebbfb2d1b8a4018ae99e314147bb3726df4b [2018-12-09 19:29:12,386 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 19:29:12,396 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 19:29:12,398 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 19:29:12,400 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 19:29:12,400 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 19:29:12,401 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_ba4c3066-badd-4058-8398-235337c81b3f/bin-2019/utaipan/../../sv-benchmarks/c/list-properties/splice_true-unreach-call_false-valid-memtrack.i [2018-12-09 19:29:12,438 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_ba4c3066-badd-4058-8398-235337c81b3f/bin-2019/utaipan/data/ce8de796a/4113f37235ca4e51ada9a2176c4b3af0/FLAG877dd687c [2018-12-09 19:29:12,787 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 19:29:12,788 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_ba4c3066-badd-4058-8398-235337c81b3f/sv-benchmarks/c/list-properties/splice_true-unreach-call_false-valid-memtrack.i [2018-12-09 19:29:12,795 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_ba4c3066-badd-4058-8398-235337c81b3f/bin-2019/utaipan/data/ce8de796a/4113f37235ca4e51ada9a2176c4b3af0/FLAG877dd687c [2018-12-09 19:29:13,164 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_ba4c3066-badd-4058-8398-235337c81b3f/bin-2019/utaipan/data/ce8de796a/4113f37235ca4e51ada9a2176c4b3af0 [2018-12-09 19:29:13,166 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 19:29:13,167 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 19:29:13,168 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 19:29:13,168 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 19:29:13,170 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 19:29:13,171 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:29:13" (1/1) ... [2018-12-09 19:29:13,173 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a5e0f52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:29:13, skipping insertion in model container [2018-12-09 19:29:13,173 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:29:13" (1/1) ... [2018-12-09 19:29:13,181 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 19:29:13,207 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 19:29:13,358 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 19:29:13,366 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 19:29:13,392 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 19:29:13,417 INFO L195 MainTranslator]: Completed translation [2018-12-09 19:29:13,417 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:29:13 WrapperNode [2018-12-09 19:29:13,417 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 19:29:13,418 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 19:29:13,418 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 19:29:13,418 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 19:29:13,455 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:29:13" (1/1) ... [2018-12-09 19:29:13,465 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:29:13" (1/1) ... [2018-12-09 19:29:13,469 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 19:29:13,469 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 19:29:13,469 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 19:29:13,469 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 19:29:13,475 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:29:13" (1/1) ... [2018-12-09 19:29:13,475 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:29:13" (1/1) ... [2018-12-09 19:29:13,477 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:29:13" (1/1) ... [2018-12-09 19:29:13,477 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:29:13" (1/1) ... [2018-12-09 19:29:13,484 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:29:13" (1/1) ... [2018-12-09 19:29:13,487 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:29:13" (1/1) ... [2018-12-09 19:29:13,488 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:29:13" (1/1) ... [2018-12-09 19:29:13,489 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 19:29:13,490 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 19:29:13,490 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 19:29:13,490 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 19:29:13,490 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:29:13" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ba4c3066-badd-4058-8398-235337c81b3f/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 [2018-12-09 19:29:13,520 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2018-12-09 19:29:13,520 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2018-12-09 19:29:13,520 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-09 19:29:13,520 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-12-09 19:29:13,521 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-09 19:29:13,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-09 19:29:13,521 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-09 19:29:13,521 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-09 19:29:13,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-12-09 19:29:13,521 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-12-09 19:29:13,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-12-09 19:29:13,521 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 19:29:13,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 19:29:13,817 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 19:29:13,817 INFO L280 CfgBuilder]: Removed 4 assue(true) statements. [2018-12-09 19:29:13,818 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:29:13 BoogieIcfgContainer [2018-12-09 19:29:13,818 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 19:29:13,818 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-09 19:29:13,818 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-09 19:29:13,820 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-09 19:29:13,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 07:29:13" (1/3) ... [2018-12-09 19:29:13,820 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72611113 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:29:13, skipping insertion in model container [2018-12-09 19:29:13,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:29:13" (2/3) ... [2018-12-09 19:29:13,821 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72611113 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:29:13, skipping insertion in model container [2018-12-09 19:29:13,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:29:13" (3/3) ... [2018-12-09 19:29:13,822 INFO L112 eAbstractionObserver]: Analyzing ICFG splice_true-unreach-call_false-valid-memtrack.i [2018-12-09 19:29:13,827 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-09 19:29:13,832 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 29 error locations. [2018-12-09 19:29:13,840 INFO L257 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2018-12-09 19:29:13,854 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-09 19:29:13,855 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-09 19:29:13,855 INFO L383 AbstractCegarLoop]: Hoare is false [2018-12-09 19:29:13,855 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-09 19:29:13,855 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 19:29:13,855 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 19:29:13,855 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-09 19:29:13,855 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 19:29:13,855 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-09 19:29:13,864 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states. [2018-12-09 19:29:13,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-12-09 19:29:13,869 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 19:29:13,870 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 19:29:13,871 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr19REQUIRES_VIOLATION, mainErr28ENSURES_VIOLATIONMEMORY_LEAK, mainErr18REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION]=== [2018-12-09 19:29:13,874 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 19:29:13,874 INFO L82 PathProgramCache]: Analyzing trace with hash -2083531694, now seen corresponding path program 1 times [2018-12-09 19:29:13,877 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-09 19:29:13,877 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ba4c3066-badd-4058-8398-235337c81b3f/bin-2019/utaipan/cvc4 Starting monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-09 19:29:13,890 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 19:29:13,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 19:29:13,917 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 19:29:13,947 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 [2018-12-09 19:29:13,948 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-09 19:29:13,952 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 19:29:13,952 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2018-12-09 19:29:13,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 19:29:13,961 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 19:29:13,963 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 19:29:13,964 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-09 19:29:13,966 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 19:29:13,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 19:29:13,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 19:29:13,975 INFO L87 Difference]: Start difference. First operand 82 states. Second operand 4 states. [2018-12-09 19:29:14,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 19:29:14,187 INFO L93 Difference]: Finished difference Result 89 states and 100 transitions. [2018-12-09 19:29:14,188 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 19:29:14,189 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2018-12-09 19:29:14,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 19:29:14,196 INFO L225 Difference]: With dead ends: 89 [2018-12-09 19:29:14,196 INFO L226 Difference]: Without dead ends: 80 [2018-12-09 19:29:14,198 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-12-09 19:29:14,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2018-12-09 19:29:14,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 74. [2018-12-09 19:29:14,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2018-12-09 19:29:14,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 86 transitions. [2018-12-09 19:29:14,227 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 86 transitions. Word has length 10 [2018-12-09 19:29:14,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 19:29:14,227 INFO L480 AbstractCegarLoop]: Abstraction has 74 states and 86 transitions. [2018-12-09 19:29:14,227 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 19:29:14,227 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 86 transitions. [2018-12-09 19:29:14,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-12-09 19:29:14,228 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 19:29:14,228 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 19:29:14,228 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr19REQUIRES_VIOLATION, mainErr28ENSURES_VIOLATIONMEMORY_LEAK, mainErr18REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION]=== [2018-12-09 19:29:14,228 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 19:29:14,228 INFO L82 PathProgramCache]: Analyzing trace with hash -2083531693, now seen corresponding path program 1 times [2018-12-09 19:29:14,229 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-09 19:29:14,229 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ba4c3066-badd-4058-8398-235337c81b3f/bin-2019/utaipan/cvc4 Starting monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-09 19:29:14,248 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 19:29:14,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 19:29:14,269 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 19:29:14,274 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 [2018-12-09 19:29:14,274 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-09 19:29:14,278 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 19:29:14,278 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-12-09 19:29:14,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 19:29:14,291 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 19:29:14,292 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 19:29:14,292 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-09 19:29:14,293 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 19:29:14,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 19:29:14,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 19:29:14,293 INFO L87 Difference]: Start difference. First operand 74 states and 86 transitions. Second operand 4 states. [2018-12-09 19:29:14,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 19:29:14,529 INFO L93 Difference]: Finished difference Result 88 states and 97 transitions. [2018-12-09 19:29:14,529 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 19:29:14,529 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2018-12-09 19:29:14,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 19:29:14,530 INFO L225 Difference]: With dead ends: 88 [2018-12-09 19:29:14,530 INFO L226 Difference]: Without dead ends: 88 [2018-12-09 19:29:14,530 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-12-09 19:29:14,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2018-12-09 19:29:14,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 81. [2018-12-09 19:29:14,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-12-09 19:29:14,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 90 transitions. [2018-12-09 19:29:14,535 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 90 transitions. Word has length 10 [2018-12-09 19:29:14,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 19:29:14,535 INFO L480 AbstractCegarLoop]: Abstraction has 81 states and 90 transitions. [2018-12-09 19:29:14,535 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 19:29:14,535 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 90 transitions. [2018-12-09 19:29:14,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-12-09 19:29:14,535 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 19:29:14,535 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 19:29:14,535 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr19REQUIRES_VIOLATION, mainErr28ENSURES_VIOLATIONMEMORY_LEAK, mainErr18REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION]=== [2018-12-09 19:29:14,536 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 19:29:14,536 INFO L82 PathProgramCache]: Analyzing trace with hash 374698854, now seen corresponding path program 1 times [2018-12-09 19:29:14,536 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-09 19:29:14,536 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ba4c3066-badd-4058-8398-235337c81b3f/bin-2019/utaipan/cvc4 Starting monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-09 19:29:14,554 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 19:29:14,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 19:29:14,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 19:29:14,624 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-09 19:29:14,635 WARN L416 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-12-09 19:29:14,648 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 07:29:14 BoogieIcfgContainer [2018-12-09 19:29:14,648 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-09 19:29:14,648 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-09 19:29:14,648 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-09 19:29:14,649 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-09 19:29:14,649 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:29:13" (3/4) ... [2018-12-09 19:29:14,652 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-12-09 19:29:14,652 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-09 19:29:14,653 INFO L168 Benchmark]: Toolchain (without parser) took 1486.07 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.8 MB). Free memory was 936.7 MB in the beginning and 1.0 GB in the end (delta: -68.2 MB). Peak memory consumption was 78.6 MB. Max. memory is 11.5 GB. [2018-12-09 19:29:14,654 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 19:29:14,654 INFO L168 Benchmark]: CACSL2BoogieTranslator took 249.70 ms. Allocated memory is still 1.0 GB. Free memory was 936.7 MB in the beginning and 909.8 MB in the end (delta: 26.8 MB). Peak memory consumption was 26.8 MB. Max. memory is 11.5 GB. [2018-12-09 19:29:14,654 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.44 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.8 MB). Free memory was 909.8 MB in the beginning and 1.1 GB in the end (delta: -223.9 MB). Peak memory consumption was 14.9 MB. Max. memory is 11.5 GB. [2018-12-09 19:29:14,655 INFO L168 Benchmark]: Boogie Preprocessor took 20.25 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 19:29:14,655 INFO L168 Benchmark]: RCFGBuilder took 327.87 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 30.3 MB). Peak memory consumption was 30.3 MB. Max. memory is 11.5 GB. [2018-12-09 19:29:14,656 INFO L168 Benchmark]: TraceAbstraction took 830.05 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: 98.5 MB). Peak memory consumption was 98.5 MB. Max. memory is 11.5 GB. [2018-12-09 19:29:14,656 INFO L168 Benchmark]: Witness Printer took 3.67 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 19:29:14,658 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 249.70 ms. Allocated memory is still 1.0 GB. Free memory was 936.7 MB in the beginning and 909.8 MB in the end (delta: 26.8 MB). Peak memory consumption was 26.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 51.44 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.8 MB). Free memory was 909.8 MB in the beginning and 1.1 GB in the end (delta: -223.9 MB). Peak memory consumption was 14.9 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 20.25 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 327.87 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 30.3 MB). Peak memory consumption was 30.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 830.05 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: 98.5 MB). Peak memory consumption was 98.5 MB. Max. memory is 11.5 GB. * Witness Printer took 3.67 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 626]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 626. Possible FailurePath: [L627] int flag = 1; [L628] List a = (List) malloc(sizeof(struct node)); VAL [a={-2147483648:0}, flag=1, malloc(sizeof(struct node))={-2147483648:0}] [L629] COND FALSE !(a == 0) VAL [a={-2147483648:0}, flag=1, malloc(sizeof(struct node))={-2147483648:0}] [L630] List t; [L631] List l1; [L632] List l2; [L633] List b; [L634] List u; [L635] List p = a; VAL [a={-2147483648:0}, flag=1, malloc(sizeof(struct node))={-2147483648:0}, p={-2147483648:0}] [L636] COND FALSE !(__VERIFIER_nondet_int()) [L649] p->h = 3 VAL [a={-2147483648:0}, flag=1, malloc(sizeof(struct node))={-2147483648:0}, p={-2147483648:0}] [L650] EXPR a->h VAL [a={-2147483648:0}, a->h=3, flag=1, malloc(sizeof(struct node))={-2147483648:0}, p={-2147483648:0}] [L650] COND TRUE a->h == 3 [L650] return 0; VAL [\result=0, a={-2147483648:0}, flag=1, malloc(sizeof(struct node))={-2147483648:0}, p={-2147483648:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 84 locations, 29 error locations. UNSAFE Result, 0.7s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 86 SDtfs, 225 SDslu, 54 SDs, 0 SdLazy, 158 SolverSat, 33 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=82occurred 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, 2 MinimizatonAttempts, 13 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 33 NumberOfCodeBlocks, 33 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 666 SizeOfPredicates, 6 NumberOfNonLiveVariables, 76 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...