./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memsetNonZero.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_3dfe632b-ddac-414d-bf17-824a8bea1d4b/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_3dfe632b-ddac-414d-bf17-824a8bea1d4b/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_3dfe632b-ddac-414d-bf17-824a8bea1d4b/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_3dfe632b-ddac-414d-bf17-824a8bea1d4b/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memsetNonZero.c -s /tmp/vcloud-vcloud-master/worker/run_dir_3dfe632b-ddac-414d-bf17-824a8bea1d4b/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_3dfe632b-ddac-414d-bf17-824a8bea1d4b/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 053e01a2cec6b58c9d93ee902fbde2c977d3366f ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- Skipped default analysis because property is memsafety ### Bit-precise run ### This is Ultimate 0.1.24-6b5699a [2019-11-26 02:46:26,740 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 02:46:26,743 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 02:46:26,758 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 02:46:26,758 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 02:46:26,760 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 02:46:26,762 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 02:46:26,770 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 02:46:26,776 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 02:46:26,780 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 02:46:26,781 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 02:46:26,782 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 02:46:26,783 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 02:46:26,785 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 02:46:26,786 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 02:46:26,787 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 02:46:26,789 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 02:46:26,790 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 02:46:26,792 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 02:46:26,796 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 02:46:26,800 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 02:46:26,804 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 02:46:26,805 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 02:46:26,806 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 02:46:26,808 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 02:46:26,809 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 02:46:26,809 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 02:46:26,810 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 02:46:26,811 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 02:46:26,812 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 02:46:26,812 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 02:46:26,813 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 02:46:26,814 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 02:46:26,814 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 02:46:26,815 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 02:46:26,815 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 02:46:26,816 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 02:46:26,816 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 02:46:26,816 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 02:46:26,817 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 02:46:26,819 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 02:46:26,819 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_3dfe632b-ddac-414d-bf17-824a8bea1d4b/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2019-11-26 02:46:26,845 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 02:46:26,855 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 02:46:26,856 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 02:46:26,857 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 02:46:26,857 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 02:46:26,857 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 02:46:26,857 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 02:46:26,857 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 02:46:26,858 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 02:46:26,858 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-26 02:46:26,858 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-26 02:46:26,859 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 02:46:26,859 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-26 02:46:26,859 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-26 02:46:26,859 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-26 02:46:26,860 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-26 02:46:26,860 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 02:46:26,860 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-26 02:46:26,860 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-26 02:46:26,860 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-26 02:46:26,861 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 02:46:26,861 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-26 02:46:26,861 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-26 02:46:26,861 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-26 02:46:26,861 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-26 02:46:26,862 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-26 02:46:26,863 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 02:46:26,863 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-26 02:46:26,863 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 02:46:26,863 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 02:46:26,864 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:46:26,864 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 02:46:26,864 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 02:46:26,864 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2019-11-26 02:46:26,865 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-26 02:46:26,865 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 02:46:26,865 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_3dfe632b-ddac-414d-bf17-824a8bea1d4b/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 -> 053e01a2cec6b58c9d93ee902fbde2c977d3366f [2019-11-26 02:46:27,047 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 02:46:27,064 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 02:46:27,067 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 02:46:27,068 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 02:46:27,069 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 02:46:27,069 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_3dfe632b-ddac-414d-bf17-824a8bea1d4b/bin/utaipan/../../sv-benchmarks/c/ldv-memsafety/memsetNonZero.c [2019-11-26 02:46:27,129 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3dfe632b-ddac-414d-bf17-824a8bea1d4b/bin/utaipan/data/e1d6fc8ce/7d0c88649d8d450b973b9a7bb621ba5d/FLAGe3ea76744 [2019-11-26 02:46:27,554 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 02:46:27,555 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_3dfe632b-ddac-414d-bf17-824a8bea1d4b/sv-benchmarks/c/ldv-memsafety/memsetNonZero.c [2019-11-26 02:46:27,561 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3dfe632b-ddac-414d-bf17-824a8bea1d4b/bin/utaipan/data/e1d6fc8ce/7d0c88649d8d450b973b9a7bb621ba5d/FLAGe3ea76744 [2019-11-26 02:46:27,971 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_3dfe632b-ddac-414d-bf17-824a8bea1d4b/bin/utaipan/data/e1d6fc8ce/7d0c88649d8d450b973b9a7bb621ba5d [2019-11-26 02:46:27,974 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 02:46:27,975 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 02:46:27,976 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 02:46:27,976 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 02:46:27,979 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 02:46:27,980 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:46:27" (1/1) ... [2019-11-26 02:46:27,983 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@235c4113 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:46:27, skipping insertion in model container [2019-11-26 02:46:27,983 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:46:27" (1/1) ... [2019-11-26 02:46:27,991 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 02:46:28,006 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:46:28,155 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:46:28,252 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 02:46:28,276 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:46:28,294 INFO L205 MainTranslator]: Completed translation [2019-11-26 02:46:28,295 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:46:28 WrapperNode [2019-11-26 02:46:28,295 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 02:46:28,296 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 02:46:28,296 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 02:46:28,296 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 02:46:28,305 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:46:28" (1/1) ... [2019-11-26 02:46:28,314 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:46:28" (1/1) ... [2019-11-26 02:46:28,334 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 02:46:28,335 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 02:46:28,335 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 02:46:28,335 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 02:46:28,346 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:46:28" (1/1) ... [2019-11-26 02:46:28,346 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:46:28" (1/1) ... [2019-11-26 02:46:28,357 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:46:28" (1/1) ... [2019-11-26 02:46:28,358 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:46:28" (1/1) ... [2019-11-26 02:46:28,369 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:46:28" (1/1) ... [2019-11-26 02:46:28,373 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:46:28" (1/1) ... [2019-11-26 02:46:28,374 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:46:28" (1/1) ... [2019-11-26 02:46:28,376 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 02:46:28,377 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 02:46:28,377 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 02:46:28,377 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 02:46:28,378 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:46:28" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3dfe632b-ddac-414d-bf17-824a8bea1d4b/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 02:46:28,436 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 02:46:28,436 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 02:46:28,439 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-26 02:46:28,439 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-26 02:46:28,676 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 02:46:28,676 INFO L284 CfgBuilder]: Removed 6 assume(true) statements. [2019-11-26 02:46:28,677 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:46:28 BoogieIcfgContainer [2019-11-26 02:46:28,677 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 02:46:28,678 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 02:46:28,678 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 02:46:28,681 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 02:46:28,682 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 02:46:27" (1/3) ... [2019-11-26 02:46:28,682 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65797ed3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:46:28, skipping insertion in model container [2019-11-26 02:46:28,683 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:46:28" (2/3) ... [2019-11-26 02:46:28,683 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65797ed3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:46:28, skipping insertion in model container [2019-11-26 02:46:28,683 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:46:28" (3/3) ... [2019-11-26 02:46:28,685 INFO L109 eAbstractionObserver]: Analyzing ICFG memsetNonZero.c [2019-11-26 02:46:28,704 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 02:46:28,720 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-11-26 02:46:28,736 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-11-26 02:46:28,760 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 02:46:28,760 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-26 02:46:28,760 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 02:46:28,761 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 02:46:28,761 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 02:46:28,761 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 02:46:28,761 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 02:46:28,761 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 02:46:28,778 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2019-11-26 02:46:28,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-11-26 02:46:28,786 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:46:28,787 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-11-26 02:46:28,787 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2019-11-26 02:46:28,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:46:28,795 INFO L82 PathProgramCache]: Analyzing trace with hash 29856, now seen corresponding path program 1 times [2019-11-26 02:46:28,807 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:46:28,808 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [520609957] [2019-11-26 02:46:28,808 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3dfe632b-ddac-414d-bf17-824a8bea1d4b/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 02:46:28,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:46:28,933 INFO L255 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-26 02:46:28,937 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:46:29,004 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 02:46:29,005 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-26 02:46:29,014 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:46:29,014 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-26 02:46:29,014 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-26 02:46:29,031 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 02:46:29,032 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:46:29,036 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 02:46:29,036 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [520609957] [2019-11-26 02:46:29,037 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:46:29,037 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-26 02:46:29,039 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626721775] [2019-11-26 02:46:29,043 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-26 02:46:29,043 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:46:29,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-26 02:46:29,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-26 02:46:29,059 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 3 states. [2019-11-26 02:46:29,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:46:29,099 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2019-11-26 02:46:29,100 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-26 02:46:29,101 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2019-11-26 02:46:29,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:46:29,110 INFO L225 Difference]: With dead ends: 11 [2019-11-26 02:46:29,110 INFO L226 Difference]: Without dead ends: 9 [2019-11-26 02:46:29,112 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-26 02:46:29,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2019-11-26 02:46:29,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2019-11-26 02:46:29,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-11-26 02:46:29,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2019-11-26 02:46:29,142 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 3 [2019-11-26 02:46:29,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:46:29,142 INFO L462 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2019-11-26 02:46:29,142 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-26 02:46:29,142 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2019-11-26 02:46:29,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-26 02:46:29,143 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:46:29,143 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-26 02:46:29,346 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:46:29,347 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2019-11-26 02:46:29,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:46:29,347 INFO L82 PathProgramCache]: Analyzing trace with hash 925572, now seen corresponding path program 1 times [2019-11-26 02:46:29,347 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:46:29,348 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [2124170534] [2019-11-26 02:46:29,348 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3dfe632b-ddac-414d-bf17-824a8bea1d4b/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 02:46:29,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:46:29,403 INFO L255 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-26 02:46:29,404 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:46:29,426 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 02:46:29,427 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-26 02:46:29,441 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:46:29,441 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-26 02:46:29,442 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2019-11-26 02:46:29,467 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 02:46:29,468 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:46:29,522 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 02:46:29,523 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2124170534] [2019-11-26 02:46:29,523 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:46:29,523 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2019-11-26 02:46:29,524 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99924053] [2019-11-26 02:46:29,525 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-26 02:46:29,525 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:46:29,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-26 02:46:29,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-26 02:46:29,526 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 4 states. [2019-11-26 02:46:29,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:46:29,544 INFO L93 Difference]: Finished difference Result 8 states and 8 transitions. [2019-11-26 02:46:29,545 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-26 02:46:29,545 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2019-11-26 02:46:29,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:46:29,545 INFO L225 Difference]: With dead ends: 8 [2019-11-26 02:46:29,546 INFO L226 Difference]: Without dead ends: 8 [2019-11-26 02:46:29,546 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-26 02:46:29,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2019-11-26 02:46:29,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2019-11-26 02:46:29,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-11-26 02:46:29,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2019-11-26 02:46:29,549 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 4 [2019-11-26 02:46:29,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:46:29,549 INFO L462 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2019-11-26 02:46:29,549 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-26 02:46:29,549 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2019-11-26 02:46:29,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-26 02:46:29,550 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:46:29,550 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:46:29,753 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:46:29,754 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2019-11-26 02:46:29,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:46:29,754 INFO L82 PathProgramCache]: Analyzing trace with hash 1803953449, now seen corresponding path program 1 times [2019-11-26 02:46:29,755 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:46:29,755 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [204597453] [2019-11-26 02:46:29,755 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3dfe632b-ddac-414d-bf17-824a8bea1d4b/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 02:46:29,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:46:29,813 INFO L255 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-26 02:46:29,814 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:46:29,844 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 02:46:29,845 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:46:29,877 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 02:46:29,877 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [204597453] [2019-11-26 02:46:29,877 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:46:29,878 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-11-26 02:46:29,878 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29672421] [2019-11-26 02:46:29,878 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-26 02:46:29,878 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:46:29,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-26 02:46:29,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-11-26 02:46:29,879 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 6 states. [2019-11-26 02:46:29,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:46:29,923 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2019-11-26 02:46:29,923 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-26 02:46:29,924 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 7 [2019-11-26 02:46:29,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:46:29,924 INFO L225 Difference]: With dead ends: 10 [2019-11-26 02:46:29,924 INFO L226 Difference]: Without dead ends: 10 [2019-11-26 02:46:29,925 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2019-11-26 02:46:29,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2019-11-26 02:46:29,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2019-11-26 02:46:29,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-11-26 02:46:29,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2019-11-26 02:46:29,927 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 7 [2019-11-26 02:46:29,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:46:29,928 INFO L462 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2019-11-26 02:46:29,928 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-26 02:46:29,928 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2019-11-26 02:46:29,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-26 02:46:29,928 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:46:29,928 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:46:30,129 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:46:30,129 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2019-11-26 02:46:30,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:46:30,130 INFO L82 PathProgramCache]: Analyzing trace with hash -1569492695, now seen corresponding path program 1 times [2019-11-26 02:46:30,130 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:46:30,130 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1547519066] [2019-11-26 02:46:30,130 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3dfe632b-ddac-414d-bf17-824a8bea1d4b/bin/utaipan/cvc4 Starting monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:46:30,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:46:30,189 INFO L255 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-26 02:46:30,190 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:46:30,250 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:46:30,250 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:46:30,355 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:46:30,355 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1547519066] [2019-11-26 02:46:30,356 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1457848620] [2019-11-26 02:46:30,356 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3dfe632b-ddac-414d-bf17-824a8bea1d4b/bin/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 [2019-11-26 02:46:30,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:46:30,423 INFO L255 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-26 02:46:30,424 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:46:30,428 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:46:30,429 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:46:30,432 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:46:30,432 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-11-26 02:46:30,432 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6] total 10 [2019-11-26 02:46:30,433 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032854324] [2019-11-26 02:46:30,433 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-26 02:46:30,433 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:46:30,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-26 02:46:30,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2019-11-26 02:46:30,434 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 10 states. [2019-11-26 02:46:30,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:46:30,621 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2019-11-26 02:46:30,622 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-26 02:46:30,623 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 9 [2019-11-26 02:46:30,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:46:30,623 INFO L225 Difference]: With dead ends: 14 [2019-11-26 02:46:30,623 INFO L226 Difference]: Without dead ends: 14 [2019-11-26 02:46:30,624 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2019-11-26 02:46:30,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-11-26 02:46:30,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2019-11-26 02:46:30,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-11-26 02:46:30,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2019-11-26 02:46:30,626 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 9 [2019-11-26 02:46:30,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:46:30,627 INFO L462 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2019-11-26 02:46:30,627 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-26 02:46:30,627 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2019-11-26 02:46:30,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-26 02:46:30,627 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:46:30,628 INFO L410 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:46:31,036 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 cvc4 --incremental --print-success --lang smt --rewrite-divk,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:46:31,037 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2019-11-26 02:46:31,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:46:31,037 INFO L82 PathProgramCache]: Analyzing trace with hash -89847511, now seen corresponding path program 2 times [2019-11-26 02:46:31,038 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:46:31,038 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1383500221] [2019-11-26 02:46:31,038 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3dfe632b-ddac-414d-bf17-824a8bea1d4b/bin/utaipan/cvc4 Starting monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:46:31,109 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2019-11-26 02:46:31,109 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-26 02:46:31,110 INFO L255 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-26 02:46:31,111 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:46:31,145 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-11-26 02:46:31,145 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:46:33,193 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-11-26 02:46:33,194 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1383500221] [2019-11-26 02:46:33,194 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:46:33,194 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2019-11-26 02:46:33,195 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113073373] [2019-11-26 02:46:33,195 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-26 02:46:33,195 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:46:33,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-26 02:46:33,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=18, Unknown=1, NotChecked=0, Total=30 [2019-11-26 02:46:33,196 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 6 states. [2019-11-26 02:46:33,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:46:33,230 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2019-11-26 02:46:33,230 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-26 02:46:33,230 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2019-11-26 02:46:33,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:46:33,231 INFO L225 Difference]: With dead ends: 13 [2019-11-26 02:46:33,231 INFO L226 Difference]: Without dead ends: 0 [2019-11-26 02:46:33,231 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=11, Invalid=18, Unknown=1, NotChecked=0, Total=30 [2019-11-26 02:46:33,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-26 02:46:33,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-26 02:46:33,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-26 02:46:33,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-26 02:46:33,232 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2019-11-26 02:46:33,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:46:33,232 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-26 02:46:33,232 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-26 02:46:33,232 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-26 02:46:33,232 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-26 02:46:33,433 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:46:33,436 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 02:46:33 BoogieIcfgContainer [2019-11-26 02:46:33,437 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-26 02:46:33,437 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-26 02:46:33,437 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-26 02:46:33,438 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-26 02:46:33,438 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:46:28" (3/4) ... [2019-11-26 02:46:33,442 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-26 02:46:33,452 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2019-11-26 02:46:33,453 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2019-11-26 02:46:33,453 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2019-11-26 02:46:33,453 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-26 02:46:33,487 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_3dfe632b-ddac-414d-bf17-824a8bea1d4b/bin/utaipan/witness.graphml [2019-11-26 02:46:33,487 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-26 02:46:33,488 INFO L168 Benchmark]: Toolchain (without parser) took 5513.55 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 159.9 MB). Free memory was 950.1 MB in the beginning and 1.0 GB in the end (delta: -66.2 MB). Peak memory consumption was 93.7 MB. Max. memory is 11.5 GB. [2019-11-26 02:46:33,489 INFO L168 Benchmark]: CDTParser took 0.19 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 02:46:33,490 INFO L168 Benchmark]: CACSL2BoogieTranslator took 320.12 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 159.9 MB). Free memory was 950.1 MB in the beginning and 1.2 GB in the end (delta: -204.5 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. [2019-11-26 02:46:33,490 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.64 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:46:33,490 INFO L168 Benchmark]: Boogie Preprocessor took 41.41 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:46:33,491 INFO L168 Benchmark]: RCFGBuilder took 300.87 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 18.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. [2019-11-26 02:46:33,492 INFO L168 Benchmark]: TraceAbstraction took 4758.61 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: 120.0 MB). Peak memory consumption was 120.0 MB. Max. memory is 11.5 GB. [2019-11-26 02:46:33,492 INFO L168 Benchmark]: Witness Printer took 49.94 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:46:33,495 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 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 320.12 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 159.9 MB). Free memory was 950.1 MB in the beginning and 1.2 GB in the end (delta: -204.5 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 38.64 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 41.41 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 300.87 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 18.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4758.61 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: 120.0 MB). Peak memory consumption was 120.0 MB. Max. memory is 11.5 GB. * Witness Printer took 49.94 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 25]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 3 error locations. Result: SAFE, OverallTime: 4.6s, OverallIterations: 5, TraceHistogramMax: 6, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 24 SDtfs, 25 SDslu, 29 SDs, 0 SdLazy, 58 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 82 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 2.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=4, 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, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 45 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 78 ConstructedInterpolants, 1 QuantifiedInterpolants, 3638 SizeOfPredicates, 12 NumberOfNonLiveVariables, 167 ConjunctsInSsa, 27 ConjunctsInUnsatCore, 12 InterpolantComputations, 8 PerfectInterpolantSequences, 42/54 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 correct! Received shutdown request...