./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/mult_array_unsafe_false-valid-deref.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_a2e5f718-dde5-4fbc-b8d6-c5e7ed8fcbf6/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_a2e5f718-dde5-4fbc-b8d6-c5e7ed8fcbf6/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_a2e5f718-dde5-4fbc-b8d6-c5e7ed8fcbf6/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_a2e5f718-dde5-4fbc-b8d6-c5e7ed8fcbf6/bin-2019/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/mult_array_unsafe_false-valid-deref.i -s /tmp/vcloud-vcloud-master/worker/working_dir_a2e5f718-dde5-4fbc-b8d6-c5e7ed8fcbf6/bin-2019/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_a2e5f718-dde5-4fbc-b8d6-c5e7ed8fcbf6/bin-2019/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 09bd9857631b51f29efb3117ef1ab581085f3cab ................................................................................................................................................................................................................................................................................................................................................................................................. 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 --- This is Ultimate 0.1.23-635dfa2 [2018-12-09 06:34:59,261 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 06:34:59,262 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 06:34:59,268 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 06:34:59,268 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 06:34:59,269 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 06:34:59,270 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 06:34:59,271 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 06:34:59,271 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 06:34:59,272 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 06:34:59,272 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 06:34:59,272 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 06:34:59,273 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 06:34:59,273 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 06:34:59,274 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 06:34:59,275 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 06:34:59,275 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 06:34:59,276 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 06:34:59,277 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 06:34:59,278 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 06:34:59,278 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 06:34:59,279 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 06:34:59,280 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 06:34:59,280 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 06:34:59,280 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 06:34:59,281 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 06:34:59,281 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 06:34:59,282 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 06:34:59,282 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 06:34:59,283 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 06:34:59,283 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 06:34:59,284 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 06:34:59,284 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 06:34:59,284 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 06:34:59,284 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 06:34:59,285 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 06:34:59,285 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_a2e5f718-dde5-4fbc-b8d6-c5e7ed8fcbf6/bin-2019/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2018-12-09 06:34:59,293 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 06:34:59,293 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 06:34:59,293 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 06:34:59,293 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-09 06:34:59,294 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-09 06:34:59,294 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-09 06:34:59,294 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-09 06:34:59,294 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-09 06:34:59,294 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-09 06:34:59,294 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-09 06:34:59,294 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-09 06:34:59,295 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-09 06:34:59,295 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-09 06:34:59,295 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-09 06:34:59,295 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-09 06:34:59,295 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 06:34:59,296 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-09 06:34:59,296 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-12-09 06:34:59,296 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-09 06:34:59,296 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-09 06:34:59,296 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 06:34:59,296 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-12-09 06:34:59,296 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-12-09 06:34:59,296 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-12-09 06:34:59,297 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 06:34:59,297 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-09 06:34:59,297 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 06:34:59,297 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 06:34:59,297 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 06:34:59,297 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-09 06:34:59,297 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 06:34:59,297 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 06:34:59,298 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 06:34:59,298 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-09 06:34:59,298 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 06:34:59,298 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-09 06:34:59,298 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_a2e5f718-dde5-4fbc-b8d6-c5e7ed8fcbf6/bin-2019/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 09bd9857631b51f29efb3117ef1ab581085f3cab [2018-12-09 06:34:59,316 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 06:34:59,326 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 06:34:59,328 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 06:34:59,330 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 06:34:59,330 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 06:34:59,330 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_a2e5f718-dde5-4fbc-b8d6-c5e7ed8fcbf6/bin-2019/utaipan/../../sv-benchmarks/c/array-memsafety/mult_array_unsafe_false-valid-deref.i [2018-12-09 06:34:59,373 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_a2e5f718-dde5-4fbc-b8d6-c5e7ed8fcbf6/bin-2019/utaipan/data/fc9624831/68f25b63b8a8422eb899e085c293148e/FLAGe21aaad6c [2018-12-09 06:34:59,887 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 06:34:59,888 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_a2e5f718-dde5-4fbc-b8d6-c5e7ed8fcbf6/sv-benchmarks/c/array-memsafety/mult_array_unsafe_false-valid-deref.i [2018-12-09 06:34:59,897 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_a2e5f718-dde5-4fbc-b8d6-c5e7ed8fcbf6/bin-2019/utaipan/data/fc9624831/68f25b63b8a8422eb899e085c293148e/FLAGe21aaad6c [2018-12-09 06:35:00,374 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_a2e5f718-dde5-4fbc-b8d6-c5e7ed8fcbf6/bin-2019/utaipan/data/fc9624831/68f25b63b8a8422eb899e085c293148e [2018-12-09 06:35:00,380 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 06:35:00,383 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 06:35:00,384 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 06:35:00,384 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 06:35:00,389 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 06:35:00,390 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 06:35:00" (1/1) ... [2018-12-09 06:35:00,392 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f8b50b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:35:00, skipping insertion in model container [2018-12-09 06:35:00,393 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 06:35:00" (1/1) ... [2018-12-09 06:35:00,400 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 06:35:00,423 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 06:35:00,577 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 06:35:00,583 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 06:35:00,638 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 06:35:00,662 INFO L195 MainTranslator]: Completed translation [2018-12-09 06:35:00,662 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:35:00 WrapperNode [2018-12-09 06:35:00,662 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 06:35:00,663 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 06:35:00,663 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 06:35:00,663 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 06:35:00,668 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:35:00" (1/1) ... [2018-12-09 06:35:00,676 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:35:00" (1/1) ... [2018-12-09 06:35:00,681 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 06:35:00,681 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 06:35:00,681 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 06:35:00,681 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 06:35:00,686 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:35:00" (1/1) ... [2018-12-09 06:35:00,687 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:35:00" (1/1) ... [2018-12-09 06:35:00,688 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:35:00" (1/1) ... [2018-12-09 06:35:00,688 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:35:00" (1/1) ... [2018-12-09 06:35:00,693 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:35:00" (1/1) ... [2018-12-09 06:35:00,696 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:35:00" (1/1) ... [2018-12-09 06:35:00,697 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:35:00" (1/1) ... [2018-12-09 06:35:00,699 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 06:35:00,699 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 06:35:00,699 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 06:35:00,699 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 06:35:00,700 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:35:00" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a2e5f718-dde5-4fbc-b8d6-c5e7ed8fcbf6/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 06:35:00,731 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-09 06:35:00,731 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-09 06:35:00,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-09 06:35:00,731 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-09 06:35:00,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-09 06:35:00,732 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-09 06:35:00,732 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-09 06:35:00,732 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-09 06:35:00,732 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 06:35:00,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 06:35:00,874 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 06:35:00,875 INFO L280 CfgBuilder]: Removed 2 assue(true) statements. [2018-12-09 06:35:00,875 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:35:00 BoogieIcfgContainer [2018-12-09 06:35:00,875 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 06:35:00,876 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-09 06:35:00,876 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-09 06:35:00,879 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-09 06:35:00,879 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 06:35:00" (1/3) ... [2018-12-09 06:35:00,880 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50401109 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 06:35:00, skipping insertion in model container [2018-12-09 06:35:00,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:35:00" (2/3) ... [2018-12-09 06:35:00,880 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50401109 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 06:35:00, skipping insertion in model container [2018-12-09 06:35:00,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:35:00" (3/3) ... [2018-12-09 06:35:00,881 INFO L112 eAbstractionObserver]: Analyzing ICFG mult_array_unsafe_false-valid-deref.i [2018-12-09 06:35:00,889 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-09 06:35:00,895 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2018-12-09 06:35:00,908 INFO L257 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2018-12-09 06:35:00,930 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-09 06:35:00,930 INFO L383 AbstractCegarLoop]: Hoare is false [2018-12-09 06:35:00,930 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-09 06:35:00,930 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 06:35:00,930 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 06:35:00,930 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-09 06:35:00,930 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 06:35:00,931 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-09 06:35:00,940 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2018-12-09 06:35:00,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-12-09 06:35:00,946 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 06:35:00,946 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 06:35:00,947 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr4REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION]=== [2018-12-09 06:35:00,950 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 06:35:00,951 INFO L82 PathProgramCache]: Analyzing trace with hash 1464982835, now seen corresponding path program 1 times [2018-12-09 06:35:00,952 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 06:35:00,979 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 06:35:00,979 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 06:35:00,979 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 06:35:00,980 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 06:35:01,005 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-12-09 06:35:01,005 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-12-09 06:35:01,005 INFO L169 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a2e5f718-dde5-4fbc-b8d6-c5e7ed8fcbf6/bin-2019/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-12-09 06:35:01,012 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 06:35:01,012 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-12-09 06:35:01,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 06:35:01,036 INFO L193 CegarAbsIntRunner]: Skipping current iteration for AI because the path program does not contain any loops [2018-12-09 06:35:01,037 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-12-09 06:35:01,037 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 06:35:01,037 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a2e5f718-dde5-4fbc-b8d6-c5e7ed8fcbf6/bin-2019/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-09 06:35:01,043 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 06:35:01,043 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-09 06:35:01,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 06:35:01,066 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 06:35:01,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 06:35:01,098 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 06:35:01,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 06:35:01,129 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-12-09 06:35:01,129 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2018-12-09 06:35:01,129 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 06:35:01,132 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-09 06:35:01,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-09 06:35:01,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-09 06:35:01,142 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 3 states. [2018-12-09 06:35:01,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 06:35:01,166 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2018-12-09 06:35:01,167 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-09 06:35:01,167 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2018-12-09 06:35:01,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 06:35:01,173 INFO L225 Difference]: With dead ends: 33 [2018-12-09 06:35:01,173 INFO L226 Difference]: Without dead ends: 30 [2018-12-09 06:35:01,174 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-09 06:35:01,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-12-09 06:35:01,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2018-12-09 06:35:01,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-12-09 06:35:01,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2018-12-09 06:35:01,196 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 12 [2018-12-09 06:35:01,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 06:35:01,197 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2018-12-09 06:35:01,197 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-09 06:35:01,197 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2018-12-09 06:35:01,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-12-09 06:35:01,197 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 06:35:01,197 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 06:35:01,198 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr4REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION]=== [2018-12-09 06:35:01,198 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 06:35:01,198 INFO L82 PathProgramCache]: Analyzing trace with hash -1830172400, now seen corresponding path program 1 times [2018-12-09 06:35:01,198 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 06:35:01,198 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 06:35:01,199 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 06:35:01,199 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 06:35:01,199 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 06:35:01,205 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-12-09 06:35:01,205 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-12-09 06:35:01,205 INFO L169 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a2e5f718-dde5-4fbc-b8d6-c5e7ed8fcbf6/bin-2019/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-12-09 06:35:01,211 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 06:35:01,211 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-12-09 06:35:01,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 06:35:01,230 INFO L193 CegarAbsIntRunner]: Skipping current iteration for AI because the path program does not contain any loops [2018-12-09 06:35:01,231 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-12-09 06:35:01,231 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 06:35:01,231 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a2e5f718-dde5-4fbc-b8d6-c5e7ed8fcbf6/bin-2019/utaipan/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-09 06:35:01,236 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 06:35:01,237 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-09 06:35:01,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 06:35:01,246 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 06:35:01,268 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 06:35:01,271 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 27 [2018-12-09 06:35:01,275 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2018-12-09 06:35:01,275 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 06:35:01,279 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 06:35:01,284 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-09 06:35:01,284 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:18, output treesize:15 [2018-12-09 06:35:01,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 06:35:01,296 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 06:35:01,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 06:35:01,322 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-12-09 06:35:01,322 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2018-12-09 06:35:01,322 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 06:35:01,322 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-09 06:35:01,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-09 06:35:01,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-12-09 06:35:01,323 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand 3 states. [2018-12-09 06:35:01,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 06:35:01,339 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2018-12-09 06:35:01,339 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-09 06:35:01,339 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2018-12-09 06:35:01,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 06:35:01,339 INFO L225 Difference]: With dead ends: 28 [2018-12-09 06:35:01,339 INFO L226 Difference]: Without dead ends: 28 [2018-12-09 06:35:01,340 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-12-09 06:35:01,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-12-09 06:35:01,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2018-12-09 06:35:01,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-12-09 06:35:01,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2018-12-09 06:35:01,342 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 13 [2018-12-09 06:35:01,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 06:35:01,342 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2018-12-09 06:35:01,342 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-09 06:35:01,342 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2018-12-09 06:35:01,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-12-09 06:35:01,342 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 06:35:01,343 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 06:35:01,343 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr4REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION]=== [2018-12-09 06:35:01,343 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 06:35:01,343 INFO L82 PathProgramCache]: Analyzing trace with hash -1830172399, now seen corresponding path program 1 times [2018-12-09 06:35:01,343 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 06:35:01,344 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 06:35:01,344 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 06:35:01,344 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 06:35:01,344 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 06:35:01,347 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-12-09 06:35:01,348 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-12-09 06:35:01,348 INFO L169 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a2e5f718-dde5-4fbc-b8d6-c5e7ed8fcbf6/bin-2019/utaipan/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-12-09 06:35:01,353 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 06:35:01,354 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-12-09 06:35:01,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 06:35:01,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 06:35:01,389 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-09 06:35:01,402 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 06:35:01 BoogieIcfgContainer [2018-12-09 06:35:01,402 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-09 06:35:01,403 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-09 06:35:01,403 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-09 06:35:01,403 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-09 06:35:01,403 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:35:00" (3/4) ... [2018-12-09 06:35:01,405 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-12-09 06:35:01,428 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_a2e5f718-dde5-4fbc-b8d6-c5e7ed8fcbf6/bin-2019/utaipan/witness.graphml [2018-12-09 06:35:01,428 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-09 06:35:01,429 INFO L168 Benchmark]: Toolchain (without parser) took 1048.38 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.8 MB). Free memory was 952.4 MB in the beginning and 1.0 GB in the end (delta: -55.7 MB). Peak memory consumption was 80.1 MB. Max. memory is 11.5 GB. [2018-12-09 06:35:01,430 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 06:35:01,430 INFO L168 Benchmark]: CACSL2BoogieTranslator took 278.69 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.8 MB). Free memory was 952.4 MB in the beginning and 1.1 GB in the end (delta: -167.5 MB). Peak memory consumption was 24.8 MB. Max. memory is 11.5 GB. [2018-12-09 06:35:01,430 INFO L168 Benchmark]: Boogie Procedure Inliner took 17.96 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 06:35:01,430 INFO L168 Benchmark]: Boogie Preprocessor took 17.64 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 06:35:01,431 INFO L168 Benchmark]: RCFGBuilder took 176.35 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: 23.9 MB). Peak memory consumption was 23.9 MB. Max. memory is 11.5 GB. [2018-12-09 06:35:01,431 INFO L168 Benchmark]: TraceAbstraction took 526.73 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 81.5 MB). Peak memory consumption was 81.5 MB. Max. memory is 11.5 GB. [2018-12-09 06:35:01,431 INFO L168 Benchmark]: Witness Printer took 25.51 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. [2018-12-09 06:35:01,433 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 278.69 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.8 MB). Free memory was 952.4 MB in the beginning and 1.1 GB in the end (delta: -167.5 MB). Peak memory consumption was 24.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 17.96 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. * Boogie Preprocessor took 17.64 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 176.35 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: 23.9 MB). Peak memory consumption was 23.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 526.73 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 81.5 MB). Peak memory consumption was 81.5 MB. Max. memory is 11.5 GB. * Witness Printer took 25.51 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 550]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L541] int i, j; [L542] int length = __VERIFIER_nondet_int(); [L543] COND TRUE length < 1 || length >= 2147483647 / sizeof(int) [L543] length = 1 VAL [length=1] [L544] int fac = __VERIFIER_nondet_int(); [L545] COND FALSE !(fac < 1 || fac >= 2147483647 / (sizeof(int) * length)) VAL [fac=2212, length=1] [L546] int *arr = __builtin_alloca (length); [L547] int *arr2 = __builtin_alloca (fac*length); VAL [__builtin_alloca (fac*length)={4:0}, __builtin_alloca (length)={5:0}, arr={5:0}, arr2={4:0}, fac=2212, length=1] [L548] COND FALSE !(!arr || !arr2) [L549] i=0 VAL [__builtin_alloca (fac*length)={4:0}, __builtin_alloca (length)={5:0}, arr={5:0}, arr2={4:0}, fac=2212, i=0, length=1] [L549] COND TRUE i