./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/verifythis/elimination_max_rec.c --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_936408e8-1cf8-4320-a428-44ade667f46d/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_936408e8-1cf8-4320-a428-44ade667f46d/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_936408e8-1cf8-4320-a428-44ade667f46d/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_936408e8-1cf8-4320-a428-44ade667f46d/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/verifythis/elimination_max_rec.c -s /tmp/vcloud-vcloud-master/worker/run_dir_936408e8-1cf8-4320-a428-44ade667f46d/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_936408e8-1cf8-4320-a428-44ade667f46d/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 17d20a29a9e9cc6560e9aa0daac36f5de29f992c ..................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref) --- Real Ultimate output --- Skipped default analysis because property is memsafety ### Bit-precise run ### This is Ultimate 0.1.24-6b5699a [2019-11-26 02:55:48,020 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 02:55:48,022 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 02:55:48,037 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 02:55:48,037 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 02:55:48,039 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 02:55:48,041 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 02:55:48,049 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 02:55:48,054 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 02:55:48,058 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 02:55:48,059 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 02:55:48,060 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 02:55:48,060 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 02:55:48,063 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 02:55:48,064 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 02:55:48,065 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 02:55:48,066 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 02:55:48,067 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 02:55:48,070 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 02:55:48,073 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 02:55:48,077 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 02:55:48,080 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 02:55:48,081 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 02:55:48,082 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 02:55:48,085 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 02:55:48,085 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 02:55:48,085 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 02:55:48,087 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 02:55:48,087 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 02:55:48,089 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 02:55:48,089 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 02:55:48,090 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 02:55:48,090 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 02:55:48,091 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 02:55:48,092 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 02:55:48,092 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 02:55:48,093 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 02:55:48,093 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 02:55:48,093 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 02:55:48,094 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 02:55:48,095 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 02:55:48,096 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_936408e8-1cf8-4320-a428-44ade667f46d/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2019-11-26 02:55:48,121 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 02:55:48,131 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 02:55:48,132 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 02:55:48,133 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 02:55:48,133 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 02:55:48,133 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 02:55:48,133 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 02:55:48,133 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 02:55:48,134 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 02:55:48,134 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-26 02:55:48,135 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-26 02:55:48,135 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 02:55:48,135 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-26 02:55:48,135 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-26 02:55:48,135 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-26 02:55:48,136 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-26 02:55:48,136 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 02:55:48,136 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-26 02:55:48,136 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-26 02:55:48,137 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-26 02:55:48,138 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 02:55:48,138 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-26 02:55:48,138 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-26 02:55:48,138 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-26 02:55:48,139 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-26 02:55:48,139 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-26 02:55:48,139 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 02:55:48,140 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-26 02:55:48,140 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 02:55:48,140 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 02:55:48,140 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:55:48,141 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 02:55:48,141 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 02:55:48,141 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2019-11-26 02:55:48,141 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-26 02:55:48,142 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 02:55:48,142 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_936408e8-1cf8-4320-a428-44ade667f46d/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 -> 17d20a29a9e9cc6560e9aa0daac36f5de29f992c [2019-11-26 02:55:48,312 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 02:55:48,327 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 02:55:48,330 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 02:55:48,331 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 02:55:48,332 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 02:55:48,332 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_936408e8-1cf8-4320-a428-44ade667f46d/bin/utaipan/../../sv-benchmarks/c/verifythis/elimination_max_rec.c [2019-11-26 02:55:48,395 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_936408e8-1cf8-4320-a428-44ade667f46d/bin/utaipan/data/78fd626c3/96795ce9a3744257a9477c407d053601/FLAG32e8cbbca [2019-11-26 02:55:48,794 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 02:55:48,794 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_936408e8-1cf8-4320-a428-44ade667f46d/sv-benchmarks/c/verifythis/elimination_max_rec.c [2019-11-26 02:55:48,812 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_936408e8-1cf8-4320-a428-44ade667f46d/bin/utaipan/data/78fd626c3/96795ce9a3744257a9477c407d053601/FLAG32e8cbbca [2019-11-26 02:55:49,177 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_936408e8-1cf8-4320-a428-44ade667f46d/bin/utaipan/data/78fd626c3/96795ce9a3744257a9477c407d053601 [2019-11-26 02:55:49,179 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 02:55:49,180 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 02:55:49,181 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 02:55:49,181 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 02:55:49,184 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 02:55:49,185 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:55:49" (1/1) ... [2019-11-26 02:55:49,188 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1400e86a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:55:49, skipping insertion in model container [2019-11-26 02:55:49,188 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:55:49" (1/1) ... [2019-11-26 02:55:49,195 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 02:55:49,211 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:55:49,418 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:55:49,439 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 02:55:49,457 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:55:49,476 INFO L205 MainTranslator]: Completed translation [2019-11-26 02:55:49,477 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:55:49 WrapperNode [2019-11-26 02:55:49,477 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 02:55:49,478 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 02:55:49,478 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 02:55:49,478 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 02:55:49,487 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:55:49" (1/1) ... [2019-11-26 02:55:49,496 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:55:49" (1/1) ... [2019-11-26 02:55:49,522 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 02:55:49,522 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 02:55:49,522 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 02:55:49,523 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 02:55:49,533 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:55:49" (1/1) ... [2019-11-26 02:55:49,533 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:55:49" (1/1) ... [2019-11-26 02:55:49,536 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:55:49" (1/1) ... [2019-11-26 02:55:49,537 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:55:49" (1/1) ... [2019-11-26 02:55:49,544 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:55:49" (1/1) ... [2019-11-26 02:55:49,546 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:55:49" (1/1) ... [2019-11-26 02:55:49,548 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:55:49" (1/1) ... [2019-11-26 02:55:49,551 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 02:55:49,551 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 02:55:49,551 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 02:55:49,552 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 02:55:49,552 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:55:49" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_936408e8-1cf8-4320-a428-44ade667f46d/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 02:55:49,609 INFO L130 BoogieDeclarations]: Found specification of procedure check [2019-11-26 02:55:49,609 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2019-11-26 02:55:49,609 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-26 02:55:49,610 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-26 02:55:49,610 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 02:55:49,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 02:55:49,610 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-26 02:55:50,132 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 02:55:50,132 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-11-26 02:55:50,133 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:55:50 BoogieIcfgContainer [2019-11-26 02:55:50,133 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 02:55:50,134 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 02:55:50,134 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 02:55:50,139 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 02:55:50,140 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 02:55:49" (1/3) ... [2019-11-26 02:55:50,141 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ca138ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:55:50, skipping insertion in model container [2019-11-26 02:55:50,141 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:55:49" (2/3) ... [2019-11-26 02:55:50,141 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ca138ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:55:50, skipping insertion in model container [2019-11-26 02:55:50,141 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:55:50" (3/3) ... [2019-11-26 02:55:50,143 INFO L109 eAbstractionObserver]: Analyzing ICFG elimination_max_rec.c [2019-11-26 02:55:50,154 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 02:55:50,164 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 12 error locations. [2019-11-26 02:55:50,176 INFO L249 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2019-11-26 02:55:50,201 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 02:55:50,201 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-26 02:55:50,201 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 02:55:50,201 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 02:55:50,201 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 02:55:50,201 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 02:55:50,201 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 02:55:50,202 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 02:55:50,224 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2019-11-26 02:55:50,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-26 02:55:50,238 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:55:50,239 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:55:50,239 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, checkErr2REQUIRES_VIOLATION, checkErr3REQUIRES_VIOLATION, checkErr4REQUIRES_VIOLATION, checkErr5REQUIRES_VIOLATION, checkErr0REQUIRES_VIOLATION, checkErr6REQUIRES_VIOLATION, checkErr1REQUIRES_VIOLATION, checkErr7REQUIRES_VIOLATION]=== [2019-11-26 02:55:50,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:55:50,245 INFO L82 PathProgramCache]: Analyzing trace with hash -45343364, now seen corresponding path program 1 times [2019-11-26 02:55:50,255 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:55:50,256 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1820377227] [2019-11-26 02:55:50,257 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_936408e8-1cf8-4320-a428-44ade667f46d/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 02:55:50,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:55:50,374 INFO L255 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 1 conjunts are in the unsatisfiable core [2019-11-26 02:55:50,381 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:55:50,397 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 02:55:50,398 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:55:50,404 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 02:55:50,406 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1820377227] [2019-11-26 02:55:50,407 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:55:50,407 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-26 02:55:50,408 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736500169] [2019-11-26 02:55:50,413 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-26 02:55:50,414 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:55:50,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-26 02:55:50,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-26 02:55:50,429 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 2 states. [2019-11-26 02:55:50,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:55:50,454 INFO L93 Difference]: Finished difference Result 40 states and 42 transitions. [2019-11-26 02:55:50,455 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-26 02:55:50,457 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2019-11-26 02:55:50,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:55:50,469 INFO L225 Difference]: With dead ends: 40 [2019-11-26 02:55:50,469 INFO L226 Difference]: Without dead ends: 38 [2019-11-26 02:55:50,470 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-26 02:55:50,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2019-11-26 02:55:50,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2019-11-26 02:55:50,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2019-11-26 02:55:50,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 40 transitions. [2019-11-26 02:55:50,508 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 40 transitions. Word has length 9 [2019-11-26 02:55:50,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:55:50,509 INFO L462 AbstractCegarLoop]: Abstraction has 38 states and 40 transitions. [2019-11-26 02:55:50,509 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-26 02:55:50,509 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 40 transitions. [2019-11-26 02:55:50,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-26 02:55:50,513 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:55:50,513 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:55:50,715 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:55:50,716 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, checkErr2REQUIRES_VIOLATION, checkErr3REQUIRES_VIOLATION, checkErr4REQUIRES_VIOLATION, checkErr5REQUIRES_VIOLATION, checkErr0REQUIRES_VIOLATION, checkErr6REQUIRES_VIOLATION, checkErr1REQUIRES_VIOLATION, checkErr7REQUIRES_VIOLATION]=== [2019-11-26 02:55:50,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:55:50,716 INFO L82 PathProgramCache]: Analyzing trace with hash -45341442, now seen corresponding path program 1 times [2019-11-26 02:55:50,716 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:55:50,717 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [531480774] [2019-11-26 02:55:50,717 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_936408e8-1cf8-4320-a428-44ade667f46d/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 02:55:50,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:55:50,791 INFO L255 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-26 02:55:50,793 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:55:50,830 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 02:55:50,831 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-26 02:55:50,838 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:55:50,838 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-26 02:55:50,838 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-26 02:55:50,884 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 02:55:50,884 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:55:50,896 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 02:55:50,896 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [531480774] [2019-11-26 02:55:50,896 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:55:50,897 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2019-11-26 02:55:50,897 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596917325] [2019-11-26 02:55:50,898 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-26 02:55:50,898 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:55:50,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-26 02:55:50,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-26 02:55:50,899 INFO L87 Difference]: Start difference. First operand 38 states and 40 transitions. Second operand 6 states. [2019-11-26 02:55:51,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:55:51,144 INFO L93 Difference]: Finished difference Result 33 states and 35 transitions. [2019-11-26 02:55:51,145 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-26 02:55:51,145 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2019-11-26 02:55:51,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:55:51,146 INFO L225 Difference]: With dead ends: 33 [2019-11-26 02:55:51,146 INFO L226 Difference]: Without dead ends: 33 [2019-11-26 02:55:51,147 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-11-26 02:55:51,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2019-11-26 02:55:51,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2019-11-26 02:55:51,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-11-26 02:55:51,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2019-11-26 02:55:51,152 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 9 [2019-11-26 02:55:51,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:55:51,152 INFO L462 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2019-11-26 02:55:51,152 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-26 02:55:51,152 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2019-11-26 02:55:51,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-26 02:55:51,153 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:55:51,153 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:55:51,355 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:55:51,356 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, checkErr2REQUIRES_VIOLATION, checkErr3REQUIRES_VIOLATION, checkErr4REQUIRES_VIOLATION, checkErr5REQUIRES_VIOLATION, checkErr0REQUIRES_VIOLATION, checkErr6REQUIRES_VIOLATION, checkErr1REQUIRES_VIOLATION, checkErr7REQUIRES_VIOLATION]=== [2019-11-26 02:55:51,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:55:51,357 INFO L82 PathProgramCache]: Analyzing trace with hash -45341441, now seen corresponding path program 1 times [2019-11-26 02:55:51,357 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:55:51,358 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [936990380] [2019-11-26 02:55:51,358 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_936408e8-1cf8-4320-a428-44ade667f46d/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 02:55:51,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-26 02:55:51,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-26 02:55:51,540 INFO L174 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2019-11-26 02:55:51,541 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-26 02:55:51,741 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:55:51,751 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2019-11-26 02:55:51,752 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2019-11-26 02:55:51,752 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2019-11-26 02:55:51,752 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2019-11-26 02:55:51,761 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 02:55:51 BoogieIcfgContainer [2019-11-26 02:55:51,762 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-26 02:55:51,762 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-26 02:55:51,762 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-26 02:55:51,763 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-26 02:55:51,763 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:55:50" (3/4) ... [2019-11-26 02:55:51,764 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-26 02:55:51,766 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2019-11-26 02:55:51,766 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2019-11-26 02:55:51,766 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2019-11-26 02:55:51,767 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2019-11-26 02:55:51,801 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_936408e8-1cf8-4320-a428-44ade667f46d/bin/utaipan/witness.graphml [2019-11-26 02:55:51,802 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-26 02:55:51,803 INFO L168 Benchmark]: Toolchain (without parser) took 2622.66 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 101.2 MB). Free memory was 948.8 MB in the beginning and 981.5 MB in the end (delta: -32.7 MB). Peak memory consumption was 68.5 MB. Max. memory is 11.5 GB. [2019-11-26 02:55:51,803 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:55:51,804 INFO L168 Benchmark]: CACSL2BoogieTranslator took 296.79 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 101.2 MB). Free memory was 948.8 MB in the beginning and 1.1 GB in the end (delta: -142.9 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. [2019-11-26 02:55:51,804 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.81 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. [2019-11-26 02:55:51,805 INFO L168 Benchmark]: Boogie Preprocessor took 28.68 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. [2019-11-26 02:55:51,805 INFO L168 Benchmark]: RCFGBuilder took 582.20 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 31.2 MB). Peak memory consumption was 31.2 MB. Max. memory is 11.5 GB. [2019-11-26 02:55:51,806 INFO L168 Benchmark]: TraceAbstraction took 1627.49 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 988.6 MB in the end (delta: 71.9 MB). Peak memory consumption was 71.9 MB. Max. memory is 11.5 GB. [2019-11-26 02:55:51,806 INFO L168 Benchmark]: Witness Printer took 39.39 ms. Allocated memory is still 1.1 GB. Free memory was 988.6 MB in the beginning and 981.5 MB in the end (delta: 7.1 MB). Peak memory consumption was 7.1 MB. Max. memory is 11.5 GB. [2019-11-26 02:55:51,809 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 296.79 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 101.2 MB). Free memory was 948.8 MB in the beginning and 1.1 GB in the end (delta: -142.9 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 43.81 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 28.68 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 582.20 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 31.2 MB). Peak memory consumption was 31.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1627.49 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 988.6 MB in the end (delta: 71.9 MB). Peak memory consumption was 71.9 MB. Max. memory is 11.5 GB. * Witness Printer took 39.39 ms. Allocated memory is still 1.1 GB. Free memory was 988.6 MB in the beginning and 981.5 MB in the end (delta: 7.1 MB). Peak memory consumption was 7.1 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 20]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L37] int n = __VERIFIER_nondet_int(); [L40] int *a = calloc(n, sizeof(int)); [L41] CALL check(0, n-1, a, n) [L12] COND FALSE !(x >= y) [L6] COND FALSE !(!cond) [L17] int x0 = x; [L18] int y0 = y; [L20] a[x] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 40 locations, 12 error locations. Result: UNSAFE, OverallTime: 1.5s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 62 SDtfs, 49 SDslu, 30 SDs, 0 SdLazy, 64 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 34 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred in iteration=0, 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 27 NumberOfCodeBlocks, 27 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 896 SizeOfPredicates, 2 NumberOfNonLiveVariables, 82 ConjunctsInSsa, 6 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 proved your program to be incorrect! Received shutdown request...