./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memsetNonZero2_-write.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_826eb87e-7558-481d-8a8b-1ddb47d93e57/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_826eb87e-7558-481d-8a8b-1ddb47d93e57/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_826eb87e-7558-481d-8a8b-1ddb47d93e57/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_826eb87e-7558-481d-8a8b-1ddb47d93e57/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memsetNonZero2_-write.c -s /tmp/vcloud-vcloud-master/worker/run_dir_826eb87e-7558-481d-8a8b-1ddb47d93e57/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_826eb87e-7558-481d-8a8b-1ddb47d93e57/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 7785be5078a920429dc2d1af3a353f3d5cac6d6f ............................................................................................................................................................................................................................................................................................................. 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 0.1.25-f470102 [2019-12-07 19:30:09,766 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 19:30:09,767 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 19:30:09,775 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 19:30:09,775 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 19:30:09,776 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 19:30:09,776 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 19:30:09,778 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 19:30:09,779 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 19:30:09,780 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 19:30:09,780 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 19:30:09,781 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 19:30:09,781 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 19:30:09,782 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 19:30:09,783 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 19:30:09,784 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 19:30:09,784 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 19:30:09,785 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 19:30:09,786 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 19:30:09,788 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 19:30:09,789 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 19:30:09,789 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 19:30:09,790 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 19:30:09,790 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 19:30:09,792 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 19:30:09,792 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 19:30:09,792 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 19:30:09,793 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 19:30:09,793 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 19:30:09,794 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 19:30:09,794 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 19:30:09,794 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 19:30:09,795 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 19:30:09,795 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 19:30:09,796 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 19:30:09,796 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 19:30:09,796 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 19:30:09,796 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 19:30:09,797 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 19:30:09,797 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 19:30:09,798 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 19:30:09,798 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_826eb87e-7558-481d-8a8b-1ddb47d93e57/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2019-12-07 19:30:09,808 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 19:30:09,808 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 19:30:09,809 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 19:30:09,809 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 19:30:09,809 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 19:30:09,809 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 19:30:09,810 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-12-07 19:30:09,810 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 19:30:09,810 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 19:30:09,810 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-12-07 19:30:09,810 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-12-07 19:30:09,810 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 19:30:09,810 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-12-07 19:30:09,811 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-12-07 19:30:09,811 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-12-07 19:30:09,811 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 19:30:09,811 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 19:30:09,811 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 19:30:09,812 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 19:30:09,812 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-12-07 19:30:09,812 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 19:30:09,812 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 19:30:09,812 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 19:30:09,812 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-12-07 19:30:09,812 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-12-07 19:30:09,812 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-12-07 19:30:09,812 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 19:30:09,813 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 19:30:09,813 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 19:30:09,813 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 19:30:09,813 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 19:30:09,813 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 19:30:09,813 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 19:30:09,813 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 19:30:09,813 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 19:30:09,814 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 19:30:09,814 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-12-07 19:30:09,814 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 19:30:09,814 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 19:30:09,814 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 19:30:09,814 INFO L138 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/run_dir_826eb87e-7558-481d-8a8b-1ddb47d93e57/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 -> 7785be5078a920429dc2d1af3a353f3d5cac6d6f [2019-12-07 19:30:09,914 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 19:30:09,923 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 19:30:09,926 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 19:30:09,928 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 19:30:09,928 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 19:30:09,929 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_826eb87e-7558-481d-8a8b-1ddb47d93e57/bin/utaipan/../../sv-benchmarks/c/ldv-memsafety/memsetNonZero2_-write.c [2019-12-07 19:30:09,975 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_826eb87e-7558-481d-8a8b-1ddb47d93e57/bin/utaipan/data/129adcd40/a6587fa90c824c6f92b22124e0b21f8f/FLAG7d02c77c7 [2019-12-07 19:30:10,428 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 19:30:10,429 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_826eb87e-7558-481d-8a8b-1ddb47d93e57/sv-benchmarks/c/ldv-memsafety/memsetNonZero2_-write.c [2019-12-07 19:30:10,434 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_826eb87e-7558-481d-8a8b-1ddb47d93e57/bin/utaipan/data/129adcd40/a6587fa90c824c6f92b22124e0b21f8f/FLAG7d02c77c7 [2019-12-07 19:30:10,443 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_826eb87e-7558-481d-8a8b-1ddb47d93e57/bin/utaipan/data/129adcd40/a6587fa90c824c6f92b22124e0b21f8f [2019-12-07 19:30:10,445 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 19:30:10,446 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 19:30:10,447 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 19:30:10,447 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 19:30:10,449 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 19:30:10,450 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 07:30:10" (1/1) ... [2019-12-07 19:30:10,452 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6342ce07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:30:10, skipping insertion in model container [2019-12-07 19:30:10,452 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 07:30:10" (1/1) ... [2019-12-07 19:30:10,457 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 19:30:10,467 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 19:30:10,590 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 19:30:10,596 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 19:30:10,606 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 19:30:10,616 INFO L208 MainTranslator]: Completed translation [2019-12-07 19:30:10,616 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:30:10 WrapperNode [2019-12-07 19:30:10,616 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 19:30:10,617 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 19:30:10,617 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 19:30:10,617 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 19:30:10,622 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:30:10" (1/1) ... [2019-12-07 19:30:10,626 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:30:10" (1/1) ... [2019-12-07 19:30:10,637 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 19:30:10,638 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 19:30:10,638 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 19:30:10,638 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 19:30:10,643 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:30:10" (1/1) ... [2019-12-07 19:30:10,644 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:30:10" (1/1) ... [2019-12-07 19:30:10,644 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:30:10" (1/1) ... [2019-12-07 19:30:10,645 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:30:10" (1/1) ... [2019-12-07 19:30:10,647 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:30:10" (1/1) ... [2019-12-07 19:30:10,649 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:30:10" (1/1) ... [2019-12-07 19:30:10,650 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:30:10" (1/1) ... [2019-12-07 19:30:10,650 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 19:30:10,651 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 19:30:10,651 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 19:30:10,651 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 19:30:10,651 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:30:10" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_826eb87e-7558-481d-8a8b-1ddb47d93e57/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 [2019-12-07 19:30:10,690 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 19:30:10,690 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 19:30:10,690 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 19:30:10,691 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 19:30:10,816 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 19:30:10,816 INFO L287 CfgBuilder]: Removed 6 assume(true) statements. [2019-12-07 19:30:10,817 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 07:30:10 BoogieIcfgContainer [2019-12-07 19:30:10,817 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 19:30:10,817 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 19:30:10,817 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 19:30:10,819 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 19:30:10,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 07:30:10" (1/3) ... [2019-12-07 19:30:10,820 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e8611c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 07:30:10, skipping insertion in model container [2019-12-07 19:30:10,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:30:10" (2/3) ... [2019-12-07 19:30:10,820 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e8611c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 07:30:10, skipping insertion in model container [2019-12-07 19:30:10,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 07:30:10" (3/3) ... [2019-12-07 19:30:10,821 INFO L109 eAbstractionObserver]: Analyzing ICFG memsetNonZero2_-write.c [2019-12-07 19:30:10,827 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 19:30:10,831 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-12-07 19:30:10,838 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-12-07 19:30:10,850 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 19:30:10,850 INFO L374 AbstractCegarLoop]: Hoare is false [2019-12-07 19:30:10,851 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 19:30:10,851 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 19:30:10,851 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 19:30:10,851 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 19:30:10,851 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 19:30:10,851 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 19:30:10,860 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2019-12-07 19:30:10,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2019-12-07 19:30:10,864 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 19:30:10,864 INFO L410 BasicCegarLoop]: trace histogram [1, 1] [2019-12-07 19:30:10,864 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2019-12-07 19:30:10,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 19:30:10,868 INFO L82 PathProgramCache]: Analyzing trace with hash 1553, now seen corresponding path program 1 times [2019-12-07 19:30:10,874 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 19:30:10,875 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069742839] [2019-12-07 19:30:10,875 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 19:30:10,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 19:30:10,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 19:30:10,969 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069742839] [2019-12-07 19:30:10,969 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 19:30:10,970 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-12-07 19:30:10,971 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792542975] [2019-12-07 19:30:10,973 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 19:30:10,974 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 19:30:10,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 19:30:10,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 19:30:10,984 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 3 states. [2019-12-07 19:30:11,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 19:30:11,006 INFO L93 Difference]: Finished difference Result 8 states and 8 transitions. [2019-12-07 19:30:11,006 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 19:30:11,007 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 2 [2019-12-07 19:30:11,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 19:30:11,012 INFO L225 Difference]: With dead ends: 8 [2019-12-07 19:30:11,013 INFO L226 Difference]: Without dead ends: 7 [2019-12-07 19:30:11,014 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 19:30:11,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2019-12-07 19:30:11,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2019-12-07 19:30:11,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-12-07 19:30:11,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2019-12-07 19:30:11,033 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 2 [2019-12-07 19:30:11,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 19:30:11,033 INFO L462 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2019-12-07 19:30:11,033 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 19:30:11,034 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2019-12-07 19:30:11,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-12-07 19:30:11,034 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 19:30:11,034 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-12-07 19:30:11,034 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2019-12-07 19:30:11,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 19:30:11,034 INFO L82 PathProgramCache]: Analyzing trace with hash 48179, now seen corresponding path program 1 times [2019-12-07 19:30:11,035 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 19:30:11,035 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319253776] [2019-12-07 19:30:11,035 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 19:30:11,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 19:30:11,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 19:30:11,063 INFO L174 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2019-12-07 19:30:11,063 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 19:30:11,070 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2019-12-07 19:30:11,071 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2019-12-07 19:30:11,071 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2019-12-07 19:30:11,071 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2019-12-07 19:30:11,071 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2019-12-07 19:30:11,071 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2019-12-07 19:30:11,076 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 07:30:11 BoogieIcfgContainer [2019-12-07 19:30:11,076 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 19:30:11,076 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 19:30:11,076 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 19:30:11,076 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 19:30:11,077 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 07:30:10" (3/4) ... [2019-12-07 19:30:11,078 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-12-07 19:30:11,078 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2019-12-07 19:30:11,079 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2019-12-07 19:30:11,079 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2019-12-07 19:30:11,079 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2019-12-07 19:30:11,079 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2019-12-07 19:30:11,079 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2019-12-07 19:30:11,101 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_826eb87e-7558-481d-8a8b-1ddb47d93e57/bin/utaipan/witness.graphml [2019-12-07 19:30:11,101 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 19:30:11,103 INFO L168 Benchmark]: Toolchain (without parser) took 656.19 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 104.3 MB). Free memory was 942.6 MB in the beginning and 1.1 GB in the end (delta: -112.2 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 19:30:11,103 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 957.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 19:30:11,104 INFO L168 Benchmark]: CACSL2BoogieTranslator took 169.28 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 104.3 MB). Free memory was 942.6 MB in the beginning and 1.1 GB in the end (delta: -156.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. [2019-12-07 19:30:11,104 INFO L168 Benchmark]: Boogie Procedure Inliner took 20.84 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. [2019-12-07 19:30:11,104 INFO L168 Benchmark]: Boogie Preprocessor took 13.01 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. [2019-12-07 19:30:11,105 INFO L168 Benchmark]: RCFGBuilder took 166.01 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: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 11.5 GB. [2019-12-07 19:30:11,105 INFO L168 Benchmark]: TraceAbstraction took 258.54 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: 22.6 MB). Peak memory consumption was 22.6 MB. Max. memory is 11.5 GB. [2019-12-07 19:30:11,105 INFO L168 Benchmark]: Witness Printer took 25.43 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. [2019-12-07 19:30:11,107 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 957.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 169.28 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 104.3 MB). Free memory was 942.6 MB in the beginning and 1.1 GB in the end (delta: -156.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 20.84 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 13.01 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 166.01 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: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 258.54 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: 22.6 MB). Peak memory consumption was 22.6 MB. Max. memory is 11.5 GB. * Witness Printer took 25.43 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. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: -1]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L21] struct compstat cstats ; - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 3 error locations. Result: UNSAFE, OverallTime: 0.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 4 SDtfs, 4 SDslu, 0 SDs, 0 SdLazy, 7 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 5 NumberOfCodeBlocks, 5 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 1 ConstructedInterpolants, 0 QuantifiedInterpolants, 5 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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...