./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-properties/splice-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 6b5699aa Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_440f2cab-5f68-481b-9274-e7efcd448c95/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_440f2cab-5f68-481b-9274-e7efcd448c95/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_440f2cab-5f68-481b-9274-e7efcd448c95/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_440f2cab-5f68-481b-9274-e7efcd448c95/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-properties/splice-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_440f2cab-5f68-481b-9274-e7efcd448c95/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_440f2cab-5f68-481b-9274-e7efcd448c95/bin/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 bb2202e8adc36cf09139287c61f8b63b857ea10d ....................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- Skipped default analysis because property is memsafety ### Bit-precise run ### This is Ultimate 0.1.24-6b5699a [2019-11-26 02:18:37,398 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 02:18:37,405 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 02:18:37,420 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 02:18:37,420 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 02:18:37,421 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 02:18:37,423 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 02:18:37,431 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 02:18:37,435 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 02:18:37,439 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 02:18:37,440 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 02:18:37,442 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 02:18:37,442 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 02:18:37,444 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 02:18:37,445 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 02:18:37,446 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 02:18:37,447 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 02:18:37,447 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 02:18:37,450 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 02:18:37,453 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 02:18:37,457 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 02:18:37,460 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 02:18:37,461 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 02:18:37,462 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 02:18:37,466 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 02:18:37,466 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 02:18:37,466 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 02:18:37,468 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 02:18:37,468 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 02:18:37,469 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 02:18:37,469 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 02:18:37,470 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 02:18:37,471 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 02:18:37,471 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 02:18:37,473 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 02:18:37,473 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 02:18:37,473 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 02:18:37,474 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 02:18:37,474 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 02:18:37,475 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 02:18:37,476 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 02:18:37,476 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_440f2cab-5f68-481b-9274-e7efcd448c95/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2019-11-26 02:18:37,507 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 02:18:37,508 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 02:18:37,508 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 02:18:37,508 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 02:18:37,509 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 02:18:37,509 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 02:18:37,509 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 02:18:37,509 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 02:18:37,509 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 02:18:37,509 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-26 02:18:37,509 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-26 02:18:37,510 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 02:18:37,510 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-26 02:18:37,510 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-26 02:18:37,510 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-26 02:18:37,510 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-26 02:18:37,511 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 02:18:37,511 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-26 02:18:37,511 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-26 02:18:37,511 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-26 02:18:37,511 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 02:18:37,511 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-26 02:18:37,511 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-26 02:18:37,511 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-26 02:18:37,512 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-26 02:18:37,512 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-26 02:18:37,512 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 02:18:37,512 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-26 02:18:37,512 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 02:18:37,512 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 02:18:37,512 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:18:37,513 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 02:18:37,513 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 02:18:37,513 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2019-11-26 02:18:37,513 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-26 02:18:37,513 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 02:18:37,513 INFO L138 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/run_dir_440f2cab-5f68-481b-9274-e7efcd448c95/bin/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 -> bb2202e8adc36cf09139287c61f8b63b857ea10d [2019-11-26 02:18:37,650 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 02:18:37,664 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 02:18:37,667 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 02:18:37,669 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 02:18:37,670 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 02:18:37,670 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_440f2cab-5f68-481b-9274-e7efcd448c95/bin/utaipan/../../sv-benchmarks/c/list-properties/splice-2.i [2019-11-26 02:18:37,721 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_440f2cab-5f68-481b-9274-e7efcd448c95/bin/utaipan/data/7b5e35d1f/976cb8b1dc424360ab91ee4bbfa7c703/FLAG2795a2522 [2019-11-26 02:18:38,173 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 02:18:38,175 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_440f2cab-5f68-481b-9274-e7efcd448c95/sv-benchmarks/c/list-properties/splice-2.i [2019-11-26 02:18:38,191 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_440f2cab-5f68-481b-9274-e7efcd448c95/bin/utaipan/data/7b5e35d1f/976cb8b1dc424360ab91ee4bbfa7c703/FLAG2795a2522 [2019-11-26 02:18:38,688 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_440f2cab-5f68-481b-9274-e7efcd448c95/bin/utaipan/data/7b5e35d1f/976cb8b1dc424360ab91ee4bbfa7c703 [2019-11-26 02:18:38,690 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 02:18:38,691 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 02:18:38,692 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 02:18:38,693 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 02:18:38,696 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 02:18:38,696 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:18:38" (1/1) ... [2019-11-26 02:18:38,699 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d816bcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:18:38, skipping insertion in model container [2019-11-26 02:18:38,699 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:18:38" (1/1) ... [2019-11-26 02:18:38,706 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 02:18:38,761 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:18:39,112 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:18:39,124 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 02:18:39,174 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:18:39,234 INFO L205 MainTranslator]: Completed translation [2019-11-26 02:18:39,235 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:18:39 WrapperNode [2019-11-26 02:18:39,235 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 02:18:39,235 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 02:18:39,236 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 02:18:39,236 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 02:18:39,243 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:18:39" (1/1) ... [2019-11-26 02:18:39,262 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:18:39" (1/1) ... [2019-11-26 02:18:39,286 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 02:18:39,287 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 02:18:39,287 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 02:18:39,287 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 02:18:39,295 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:18:39" (1/1) ... [2019-11-26 02:18:39,295 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:18:39" (1/1) ... [2019-11-26 02:18:39,299 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:18:39" (1/1) ... [2019-11-26 02:18:39,299 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:18:39" (1/1) ... [2019-11-26 02:18:39,309 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:18:39" (1/1) ... [2019-11-26 02:18:39,313 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:18:39" (1/1) ... [2019-11-26 02:18:39,316 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:18:39" (1/1) ... [2019-11-26 02:18:39,319 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 02:18:39,320 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 02:18:39,320 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 02:18:39,320 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 02:18:39,321 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:18:39" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_440f2cab-5f68-481b-9274-e7efcd448c95/bin/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 [2019-11-26 02:18:39,369 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-26 02:18:39,370 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-26 02:18:39,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-26 02:18:39,370 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-26 02:18:39,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-26 02:18:39,370 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 02:18:39,370 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 02:18:39,916 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 02:18:39,917 INFO L284 CfgBuilder]: Removed 12 assume(true) statements. [2019-11-26 02:18:39,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:18:39 BoogieIcfgContainer [2019-11-26 02:18:39,918 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 02:18:39,919 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 02:18:39,920 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 02:18:39,923 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 02:18:39,923 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 02:18:38" (1/3) ... [2019-11-26 02:18:39,924 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a37dec7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:18:39, skipping insertion in model container [2019-11-26 02:18:39,924 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:18:39" (2/3) ... [2019-11-26 02:18:39,924 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a37dec7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:18:39, skipping insertion in model container [2019-11-26 02:18:39,924 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:18:39" (3/3) ... [2019-11-26 02:18:39,926 INFO L109 eAbstractionObserver]: Analyzing ICFG splice-2.i [2019-11-26 02:18:39,934 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 02:18:39,940 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 29 error locations. [2019-11-26 02:18:39,950 INFO L249 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2019-11-26 02:18:39,966 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 02:18:39,966 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-26 02:18:39,967 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 02:18:39,967 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 02:18:39,967 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 02:18:39,967 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 02:18:39,967 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 02:18:39,967 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 02:18:39,981 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states. [2019-11-26 02:18:39,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-26 02:18:39,991 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:18:39,991 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-26 02:18:39,992 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2019-11-26 02:18:39,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:18:39,997 INFO L82 PathProgramCache]: Analyzing trace with hash 889599241, now seen corresponding path program 1 times [2019-11-26 02:18:40,008 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:18:40,008 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [2020013599] [2019-11-26 02:18:40,009 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_440f2cab-5f68-481b-9274-e7efcd448c95/bin/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 [2019-11-26 02:18:40,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:18:40,129 INFO L255 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-26 02:18:40,133 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:18:40,186 INFO L377 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 [2019-11-26 02:18:40,187 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-26 02:18:40,199 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:18:40,199 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-26 02:18:40,199 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-26 02:18:40,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:18:40,221 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:18:40,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:18:40,236 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2020013599] [2019-11-26 02:18:40,237 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:18:40,237 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-11-26 02:18:40,238 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631897189] [2019-11-26 02:18:40,244 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-26 02:18:40,244 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:18:40,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-26 02:18:40,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-26 02:18:40,261 INFO L87 Difference]: Start difference. First operand 75 states. Second operand 4 states. [2019-11-26 02:18:40,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:18:40,563 INFO L93 Difference]: Finished difference Result 83 states and 93 transitions. [2019-11-26 02:18:40,564 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-26 02:18:40,565 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2019-11-26 02:18:40,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:18:40,572 INFO L225 Difference]: With dead ends: 83 [2019-11-26 02:18:40,572 INFO L226 Difference]: Without dead ends: 76 [2019-11-26 02:18:40,574 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-26 02:18:40,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2019-11-26 02:18:40,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 70. [2019-11-26 02:18:40,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2019-11-26 02:18:40,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 82 transitions. [2019-11-26 02:18:40,604 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 82 transitions. Word has length 6 [2019-11-26 02:18:40,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:18:40,605 INFO L462 AbstractCegarLoop]: Abstraction has 70 states and 82 transitions. [2019-11-26 02:18:40,605 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-26 02:18:40,605 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 82 transitions. [2019-11-26 02:18:40,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-26 02:18:40,605 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:18:40,606 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-26 02:18:40,808 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:18:40,809 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2019-11-26 02:18:40,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:18:40,809 INFO L82 PathProgramCache]: Analyzing trace with hash 889599242, now seen corresponding path program 1 times [2019-11-26 02:18:40,810 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:18:40,810 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1382931684] [2019-11-26 02:18:40,810 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_440f2cab-5f68-481b-9274-e7efcd448c95/bin/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 [2019-11-26 02:18:40,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:18:40,890 INFO L255 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-26 02:18:40,891 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:18:40,906 INFO L377 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 [2019-11-26 02:18:40,906 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-26 02:18:40,912 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:18:40,913 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-26 02:18:40,913 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-26 02:18:40,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:18:40,946 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:18:41,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:18:41,049 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1382931684] [2019-11-26 02:18:41,050 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:18:41,050 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2019-11-26 02:18:41,050 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067458296] [2019-11-26 02:18:41,051 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-26 02:18:41,052 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:18:41,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-26 02:18:41,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-26 02:18:41,056 INFO L87 Difference]: Start difference. First operand 70 states and 82 transitions. Second operand 6 states. [2019-11-26 02:18:41,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:18:41,525 INFO L93 Difference]: Finished difference Result 86 states and 94 transitions. [2019-11-26 02:18:41,526 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-26 02:18:41,527 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 6 [2019-11-26 02:18:41,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:18:41,528 INFO L225 Difference]: With dead ends: 86 [2019-11-26 02:18:41,528 INFO L226 Difference]: Without dead ends: 86 [2019-11-26 02:18:41,529 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2019-11-26 02:18:41,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2019-11-26 02:18:41,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 77. [2019-11-26 02:18:41,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2019-11-26 02:18:41,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 86 transitions. [2019-11-26 02:18:41,537 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 86 transitions. Word has length 6 [2019-11-26 02:18:41,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:18:41,537 INFO L462 AbstractCegarLoop]: Abstraction has 77 states and 86 transitions. [2019-11-26 02:18:41,538 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-26 02:18:41,538 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 86 transitions. [2019-11-26 02:18:41,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-26 02:18:41,545 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:18:41,546 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:18:41,748 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:18:41,748 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2019-11-26 02:18:41,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:18:41,748 INFO L82 PathProgramCache]: Analyzing trace with hash 2102797385, now seen corresponding path program 1 times [2019-11-26 02:18:41,749 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:18:41,749 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [389352938] [2019-11-26 02:18:41,749 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_440f2cab-5f68-481b-9274-e7efcd448c95/bin/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 [2019-11-26 02:18:41,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-26 02:18:41,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-26 02:18:41,910 INFO L174 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2019-11-26 02:18:41,910 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-26 02:18:42,111 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:18:42,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 02:18:42 BoogieIcfgContainer [2019-11-26 02:18:42,130 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-26 02:18:42,131 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-26 02:18:42,131 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-26 02:18:42,131 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-26 02:18:42,131 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:18:39" (3/4) ... [2019-11-26 02:18:42,135 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-26 02:18:42,135 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-26 02:18:42,136 INFO L168 Benchmark]: Toolchain (without parser) took 3444.88 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.3 MB). Free memory was 938.0 MB in the beginning and 971.2 MB in the end (delta: -33.2 MB). Peak memory consumption was 113.1 MB. Max. memory is 11.5 GB. [2019-11-26 02:18:42,137 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:18:42,137 INFO L168 Benchmark]: CACSL2BoogieTranslator took 542.90 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.3 MB). Free memory was 938.0 MB in the beginning and 1.1 GB in the end (delta: -185.4 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. [2019-11-26 02:18:42,138 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.18 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-26 02:18:42,138 INFO L168 Benchmark]: Boogie Preprocessor took 32.70 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. [2019-11-26 02:18:42,139 INFO L168 Benchmark]: RCFGBuilder took 598.46 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: 33.1 MB). Peak memory consumption was 33.1 MB. Max. memory is 11.5 GB. [2019-11-26 02:18:42,139 INFO L168 Benchmark]: TraceAbstraction took 2211.48 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 971.2 MB in the end (delta: 113.7 MB). Peak memory consumption was 113.7 MB. Max. memory is 11.5 GB. [2019-11-26 02:18:42,140 INFO L168 Benchmark]: Witness Printer took 4.19 ms. Allocated memory is still 1.2 GB. Free memory is still 971.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:18:42,143 INFO L335 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 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 542.90 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.3 MB). Free memory was 938.0 MB in the beginning and 1.1 GB in the end (delta: -185.4 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 51.18 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 32.70 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 598.46 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: 33.1 MB). Peak memory consumption was 33.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2211.48 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 971.2 MB in the end (delta: 113.7 MB). Peak memory consumption was 113.7 MB. Max. memory is 11.5 GB. * Witness Printer took 4.19 ms. Allocated memory is still 1.2 GB. Free memory is still 971.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 520]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 520. Possible FailurePath: [L521] int flag = 1; [L522] List a = (List) malloc(sizeof(struct node)); [L523] COND FALSE !(a == 0) [L524] List t; [L525] List l1; [L526] List l2; [L527] List b; [L528] List u; [L529] List p = a; [L530] COND FALSE !(__VERIFIER_nondet_int()) [L543] p->h = 3 [L544] EXPR a->h [L544] COND TRUE a->h == 3 [L544] return 0; - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 75 locations, 29 error locations. Result: UNSAFE, OverallTime: 2.1s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 75 SDtfs, 263 SDslu, 36 SDs, 0 SdLazy, 152 SolverSat, 43 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=77occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 15 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 800 SizeOfPredicates, 8 NumberOfNonLiveVariables, 44 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...