./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength6.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_3a22383f-64ab-4823-bdf1-4de8dae428eb/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_3a22383f-64ab-4823-bdf1-4de8dae428eb/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_3a22383f-64ab-4823-bdf1-4de8dae428eb/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_3a22383f-64ab-4823-bdf1-4de8dae428eb/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength6.c -s /tmp/vcloud-vcloud-master/worker/run_dir_3a22383f-64ab-4823-bdf1-4de8dae428eb/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_3a22383f-64ab-4823-bdf1-4de8dae428eb/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 07b05923cf5c1b39a35ab81b524575a0a488c268 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 19:58:07,866 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 19:58:07,867 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 19:58:07,876 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 19:58:07,876 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 19:58:07,877 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 19:58:07,878 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 19:58:07,879 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 19:58:07,881 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 19:58:07,882 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 19:58:07,882 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 19:58:07,883 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 19:58:07,884 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 19:58:07,885 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 19:58:07,885 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 19:58:07,886 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 19:58:07,887 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 19:58:07,888 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 19:58:07,890 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 19:58:07,892 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 19:58:07,893 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 19:58:07,894 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 19:58:07,895 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 19:58:07,895 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 19:58:07,898 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 19:58:07,898 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 19:58:07,898 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 19:58:07,898 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 19:58:07,899 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 19:58:07,900 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 19:58:07,900 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 19:58:07,900 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 19:58:07,901 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 19:58:07,901 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 19:58:07,902 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 19:58:07,902 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 19:58:07,903 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 19:58:07,903 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 19:58:07,903 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 19:58:07,904 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 19:58:07,905 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 19:58:07,905 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_3a22383f-64ab-4823-bdf1-4de8dae428eb/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2019-12-07 19:58:07,918 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 19:58:07,918 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 19:58:07,918 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 19:58:07,919 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 19:58:07,919 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 19:58:07,919 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 19:58:07,919 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-12-07 19:58:07,919 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 19:58:07,919 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 19:58:07,919 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-12-07 19:58:07,920 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-12-07 19:58:07,920 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 19:58:07,920 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-12-07 19:58:07,920 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-12-07 19:58:07,920 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-12-07 19:58:07,921 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 19:58:07,921 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 19:58:07,921 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 19:58:07,921 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 19:58:07,921 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-12-07 19:58:07,921 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 19:58:07,922 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 19:58:07,922 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 19:58:07,922 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-12-07 19:58:07,922 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-12-07 19:58:07,922 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-12-07 19:58:07,922 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 19:58:07,922 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 19:58:07,922 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 19:58:07,922 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 19:58:07,922 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 19:58:07,923 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 19:58:07,923 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 19:58:07,923 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 19:58:07,923 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 19:58:07,923 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 19:58:07,923 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-12-07 19:58:07,923 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 19:58:07,923 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 19:58:07,923 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 19:58:07,924 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_3a22383f-64ab-4823-bdf1-4de8dae428eb/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 -> 07b05923cf5c1b39a35ab81b524575a0a488c268 [2019-12-07 19:58:08,031 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 19:58:08,041 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 19:58:08,044 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 19:58:08,045 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 19:58:08,046 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 19:58:08,046 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_3a22383f-64ab-4823-bdf1-4de8dae428eb/bin/utaipan/../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength6.c [2019-12-07 19:58:08,092 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3a22383f-64ab-4823-bdf1-4de8dae428eb/bin/utaipan/data/f9255cc12/37c3b96634a14526bf1256b7d9b9bcb3/FLAGa2eb0aaa8 [2019-12-07 19:58:08,510 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 19:58:08,510 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_3a22383f-64ab-4823-bdf1-4de8dae428eb/sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength6.c [2019-12-07 19:58:08,515 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3a22383f-64ab-4823-bdf1-4de8dae428eb/bin/utaipan/data/f9255cc12/37c3b96634a14526bf1256b7d9b9bcb3/FLAGa2eb0aaa8 [2019-12-07 19:58:08,525 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_3a22383f-64ab-4823-bdf1-4de8dae428eb/bin/utaipan/data/f9255cc12/37c3b96634a14526bf1256b7d9b9bcb3 [2019-12-07 19:58:08,527 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 19:58:08,528 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 19:58:08,529 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 19:58:08,529 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 19:58:08,531 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 19:58:08,532 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 07:58:08" (1/1) ... [2019-12-07 19:58:08,534 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64225209 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:58:08, skipping insertion in model container [2019-12-07 19:58:08,534 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 07:58:08" (1/1) ... [2019-12-07 19:58:08,539 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 19:58:08,549 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 19:58:08,677 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 19:58:08,684 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 19:58:08,695 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 19:58:08,704 INFO L208 MainTranslator]: Completed translation [2019-12-07 19:58:08,705 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:58:08 WrapperNode [2019-12-07 19:58:08,705 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 19:58:08,705 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 19:58:08,705 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 19:58:08,705 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 19:58:08,710 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:58:08" (1/1) ... [2019-12-07 19:58:08,716 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:58:08" (1/1) ... [2019-12-07 19:58:08,729 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 19:58:08,729 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 19:58:08,729 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 19:58:08,729 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 19:58:08,735 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:58:08" (1/1) ... [2019-12-07 19:58:08,735 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:58:08" (1/1) ... [2019-12-07 19:58:08,736 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:58:08" (1/1) ... [2019-12-07 19:58:08,736 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:58:08" (1/1) ... [2019-12-07 19:58:08,740 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:58:08" (1/1) ... [2019-12-07 19:58:08,743 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:58:08" (1/1) ... [2019-12-07 19:58:08,743 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:58:08" (1/1) ... [2019-12-07 19:58:08,745 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 19:58:08,745 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 19:58:08,745 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 19:58:08,745 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 19:58:08,746 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:58:08" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3a22383f-64ab-4823-bdf1-4de8dae428eb/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 19:58:08,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-07 19:58:08,785 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 19:58:08,785 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 19:58:08,785 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-07 19:58:08,785 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 19:58:08,785 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 19:58:09,003 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 19:58:09,003 INFO L287 CfgBuilder]: Removed 9 assume(true) statements. [2019-12-07 19:58:09,004 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 07:58:09 BoogieIcfgContainer [2019-12-07 19:58:09,004 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 19:58:09,005 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 19:58:09,005 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 19:58:09,007 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 19:58:09,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 07:58:08" (1/3) ... [2019-12-07 19:58:09,008 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@90e060d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 07:58:09, skipping insertion in model container [2019-12-07 19:58:09,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:58:08" (2/3) ... [2019-12-07 19:58:09,009 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@90e060d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 07:58:09, skipping insertion in model container [2019-12-07 19:58:09,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 07:58:09" (3/3) ... [2019-12-07 19:58:09,010 INFO L109 eAbstractionObserver]: Analyzing ICFG ArraysOfVariableLength6.c [2019-12-07 19:58:09,016 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 19:58:09,021 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 8 error locations. [2019-12-07 19:58:09,029 INFO L249 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2019-12-07 19:58:09,042 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 19:58:09,042 INFO L374 AbstractCegarLoop]: Hoare is false [2019-12-07 19:58:09,042 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 19:58:09,042 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 19:58:09,042 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 19:58:09,042 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 19:58:09,042 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 19:58:09,043 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 19:58:09,051 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2019-12-07 19:58:09,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-12-07 19:58:09,056 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 19:58:09,056 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-12-07 19:58:09,057 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2019-12-07 19:58:09,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 19:58:09,060 INFO L82 PathProgramCache]: Analyzing trace with hash 3150815, now seen corresponding path program 1 times [2019-12-07 19:58:09,066 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 19:58:09,066 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964211124] [2019-12-07 19:58:09,067 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 19:58:09,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 19:58:09,168 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 19:58:09,169 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964211124] [2019-12-07 19:58:09,169 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 19:58:09,169 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 19:58:09,170 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865781837] [2019-12-07 19:58:09,173 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 19:58:09,173 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 19:58:09,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 19:58:09,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 19:58:09,183 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 3 states. [2019-12-07 19:58:09,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 19:58:09,217 INFO L93 Difference]: Finished difference Result 37 states and 41 transitions. [2019-12-07 19:58:09,217 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 19:58:09,218 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-12-07 19:58:09,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 19:58:09,224 INFO L225 Difference]: With dead ends: 37 [2019-12-07 19:58:09,224 INFO L226 Difference]: Without dead ends: 35 [2019-12-07 19:58:09,225 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 19:58:09,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-12-07 19:58:09,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 20. [2019-12-07 19:58:09,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-12-07 19:58:09,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2019-12-07 19:58:09,247 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 4 [2019-12-07 19:58:09,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 19:58:09,247 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2019-12-07 19:58:09,247 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 19:58:09,247 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2019-12-07 19:58:09,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-12-07 19:58:09,248 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 19:58:09,248 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-12-07 19:58:09,248 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2019-12-07 19:58:09,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 19:58:09,248 INFO L82 PathProgramCache]: Analyzing trace with hash 3078660, now seen corresponding path program 1 times [2019-12-07 19:58:09,248 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 19:58:09,248 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863879811] [2019-12-07 19:58:09,249 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 19:58:09,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 19:58:09,271 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 19:58:09,272 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863879811] [2019-12-07 19:58:09,272 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 19:58:09,272 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 19:58:09,272 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923919232] [2019-12-07 19:58:09,273 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 19:58:09,273 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 19:58:09,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 19:58:09,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 19:58:09,274 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand 3 states. [2019-12-07 19:58:09,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 19:58:09,287 INFO L93 Difference]: Finished difference Result 37 states and 43 transitions. [2019-12-07 19:58:09,287 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 19:58:09,287 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-12-07 19:58:09,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 19:58:09,288 INFO L225 Difference]: With dead ends: 37 [2019-12-07 19:58:09,288 INFO L226 Difference]: Without dead ends: 37 [2019-12-07 19:58:09,289 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 19:58:09,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2019-12-07 19:58:09,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 22. [2019-12-07 19:58:09,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-12-07 19:58:09,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2019-12-07 19:58:09,292 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 4 [2019-12-07 19:58:09,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 19:58:09,292 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2019-12-07 19:58:09,292 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 19:58:09,292 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2019-12-07 19:58:09,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-12-07 19:58:09,292 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 19:58:09,292 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-12-07 19:58:09,293 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2019-12-07 19:58:09,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 19:58:09,293 INFO L82 PathProgramCache]: Analyzing trace with hash 3080752, now seen corresponding path program 1 times [2019-12-07 19:58:09,293 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 19:58:09,293 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028266712] [2019-12-07 19:58:09,293 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 19:58:09,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 19:58:09,323 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 19:58:09,324 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028266712] [2019-12-07 19:58:09,324 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 19:58:09,324 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 19:58:09,324 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581423689] [2019-12-07 19:58:09,324 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 19:58:09,324 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 19:58:09,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 19:58:09,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 19:58:09,325 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand 3 states. [2019-12-07 19:58:09,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 19:58:09,341 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2019-12-07 19:58:09,341 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 19:58:09,341 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-12-07 19:58:09,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 19:58:09,342 INFO L225 Difference]: With dead ends: 25 [2019-12-07 19:58:09,342 INFO L226 Difference]: Without dead ends: 25 [2019-12-07 19:58:09,342 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 19:58:09,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-12-07 19:58:09,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 22. [2019-12-07 19:58:09,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-12-07 19:58:09,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2019-12-07 19:58:09,345 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 4 [2019-12-07 19:58:09,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 19:58:09,345 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2019-12-07 19:58:09,345 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 19:58:09,345 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2019-12-07 19:58:09,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-12-07 19:58:09,345 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 19:58:09,345 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-12-07 19:58:09,345 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2019-12-07 19:58:09,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 19:58:09,346 INFO L82 PathProgramCache]: Analyzing trace with hash 95438513, now seen corresponding path program 1 times [2019-12-07 19:58:09,346 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 19:58:09,346 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464686321] [2019-12-07 19:58:09,346 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 19:58:09,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 19:58:09,368 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 19:58:09,369 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464686321] [2019-12-07 19:58:09,369 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 19:58:09,369 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 19:58:09,369 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814045824] [2019-12-07 19:58:09,369 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 19:58:09,369 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 19:58:09,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 19:58:09,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 19:58:09,370 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand 4 states. [2019-12-07 19:58:09,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 19:58:09,399 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2019-12-07 19:58:09,399 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 19:58:09,399 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2019-12-07 19:58:09,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 19:58:09,400 INFO L225 Difference]: With dead ends: 21 [2019-12-07 19:58:09,400 INFO L226 Difference]: Without dead ends: 21 [2019-12-07 19:58:09,400 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-07 19:58:09,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-12-07 19:58:09,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2019-12-07 19:58:09,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-12-07 19:58:09,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2019-12-07 19:58:09,402 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 5 [2019-12-07 19:58:09,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 19:58:09,402 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2019-12-07 19:58:09,402 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 19:58:09,403 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2019-12-07 19:58:09,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-12-07 19:58:09,403 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 19:58:09,403 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-12-07 19:58:09,403 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2019-12-07 19:58:09,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 19:58:09,403 INFO L82 PathProgramCache]: Analyzing trace with hash 95438514, now seen corresponding path program 1 times [2019-12-07 19:58:09,403 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 19:58:09,404 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833221333] [2019-12-07 19:58:09,404 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 19:58:09,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 19:58:09,441 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 19:58:09,441 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833221333] [2019-12-07 19:58:09,441 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 19:58:09,441 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 19:58:09,441 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511948416] [2019-12-07 19:58:09,442 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 19:58:09,442 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 19:58:09,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 19:58:09,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-07 19:58:09,442 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand 5 states. [2019-12-07 19:58:09,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 19:58:09,494 INFO L93 Difference]: Finished difference Result 20 states and 23 transitions. [2019-12-07 19:58:09,495 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 19:58:09,495 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 5 [2019-12-07 19:58:09,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 19:58:09,495 INFO L225 Difference]: With dead ends: 20 [2019-12-07 19:58:09,495 INFO L226 Difference]: Without dead ends: 20 [2019-12-07 19:58:09,496 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-12-07 19:58:09,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-12-07 19:58:09,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2019-12-07 19:58:09,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-12-07 19:58:09,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2019-12-07 19:58:09,498 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 5 [2019-12-07 19:58:09,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 19:58:09,499 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2019-12-07 19:58:09,499 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 19:58:09,499 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2019-12-07 19:58:09,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-12-07 19:58:09,499 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 19:58:09,500 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2019-12-07 19:58:09,500 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2019-12-07 19:58:09,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 19:58:09,500 INFO L82 PathProgramCache]: Analyzing trace with hash 1522153131, now seen corresponding path program 1 times [2019-12-07 19:58:09,500 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 19:58:09,501 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161455640] [2019-12-07 19:58:09,501 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 19:58:09,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 19:58:09,539 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 19:58:09,539 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161455640] [2019-12-07 19:58:09,540 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2000186686] [2019-12-07 19:58:09,540 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3a22383f-64ab-4823-bdf1-4de8dae428eb/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 19:58:09,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 19:58:09,567 INFO L264 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 19:58:09,570 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 19:58:09,586 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 19:58:09,587 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 19:58:09,604 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 19:58:09,604 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2124680381] [2019-12-07 19:58:09,619 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2019-12-07 19:58:09,619 INFO L166 IcfgInterpreter]: Building call graph [2019-12-07 19:58:09,623 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-12-07 19:58:09,627 INFO L176 IcfgInterpreter]: Starting interpretation [2019-12-07 19:58:09,628 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-12-07 19:58:10,016 INFO L180 IcfgInterpreter]: Interpretation finished [2019-12-07 19:58:10,225 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 44 [2019-12-07 19:58:10,354 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 45 [2019-12-07 19:58:10,376 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2019-12-07 19:58:10,376 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 3, 3] total 12 [2019-12-07 19:58:10,377 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952059413] [2019-12-07 19:58:10,377 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 19:58:10,378 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 19:58:10,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 19:58:10,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2019-12-07 19:58:10,378 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand 5 states. [2019-12-07 19:58:10,527 WARN L192 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 65 [2019-12-07 19:58:10,653 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 64 [2019-12-07 19:58:10,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 19:58:10,694 INFO L93 Difference]: Finished difference Result 26 states and 30 transitions. [2019-12-07 19:58:10,694 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 19:58:10,694 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2019-12-07 19:58:10,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 19:58:10,695 INFO L225 Difference]: With dead ends: 26 [2019-12-07 19:58:10,695 INFO L226 Difference]: Without dead ends: 26 [2019-12-07 19:58:10,695 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2019-12-07 19:58:10,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-12-07 19:58:10,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2019-12-07 19:58:10,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-12-07 19:58:10,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2019-12-07 19:58:10,697 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 7 [2019-12-07 19:58:10,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 19:58:10,698 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2019-12-07 19:58:10,698 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 19:58:10,698 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2019-12-07 19:58:10,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 19:58:10,698 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 19:58:10,698 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 19:58:10,899 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 19:58:10,899 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2019-12-07 19:58:10,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 19:58:10,900 INFO L82 PathProgramCache]: Analyzing trace with hash 262840021, now seen corresponding path program 1 times [2019-12-07 19:58:10,900 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 19:58:10,901 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312495565] [2019-12-07 19:58:10,901 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 19:58:10,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 19:58:10,956 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-07 19:58:10,956 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312495565] [2019-12-07 19:58:10,957 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 19:58:10,957 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 19:58:10,958 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114068900] [2019-12-07 19:58:10,958 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 19:58:10,959 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 19:58:10,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 19:58:10,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 19:58:10,960 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand 3 states. [2019-12-07 19:58:11,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 19:58:11,004 INFO L93 Difference]: Finished difference Result 23 states and 27 transitions. [2019-12-07 19:58:11,005 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 19:58:11,005 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2019-12-07 19:58:11,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 19:58:11,006 INFO L225 Difference]: With dead ends: 23 [2019-12-07 19:58:11,007 INFO L226 Difference]: Without dead ends: 23 [2019-12-07 19:58:11,008 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 19:58:11,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-12-07 19:58:11,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-12-07 19:58:11,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-12-07 19:58:11,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2019-12-07 19:58:11,015 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 10 [2019-12-07 19:58:11,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 19:58:11,016 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2019-12-07 19:58:11,016 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 19:58:11,017 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2019-12-07 19:58:11,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 19:58:11,018 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 19:58:11,018 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 19:58:11,019 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2019-12-07 19:58:11,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 19:58:11,019 INFO L82 PathProgramCache]: Analyzing trace with hash 262840022, now seen corresponding path program 1 times [2019-12-07 19:58:11,020 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 19:58:11,020 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256700636] [2019-12-07 19:58:11,021 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 19:58:11,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 19:58:11,065 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-07 19:58:11,066 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256700636] [2019-12-07 19:58:11,066 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1847826307] [2019-12-07 19:58:11,066 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3a22383f-64ab-4823-bdf1-4de8dae428eb/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 19:58:11,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 19:58:11,095 INFO L264 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 19:58:11,096 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 19:58:11,110 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 19:58:11,110 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 19:58:11,123 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 19:58:11,123 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1781958423] [2019-12-07 19:58:11,124 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2019-12-07 19:58:11,124 INFO L166 IcfgInterpreter]: Building call graph [2019-12-07 19:58:11,125 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-12-07 19:58:11,125 INFO L176 IcfgInterpreter]: Starting interpretation [2019-12-07 19:58:11,125 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-12-07 19:58:11,163 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 19:58:11,261 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 19:58:11,268 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 19:58:11,645 INFO L180 IcfgInterpreter]: Interpretation finished [2019-12-07 19:58:11,886 WARN L192 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 85 [2019-12-07 19:58:12,280 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2019-12-07 19:58:12,280 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [3, 4, 4] total 13 [2019-12-07 19:58:12,281 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491634683] [2019-12-07 19:58:12,281 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-12-07 19:58:12,281 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 19:58:12,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-12-07 19:58:12,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2019-12-07 19:58:12,282 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand 7 states. [2019-12-07 19:58:12,511 WARN L192 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 87 [2019-12-07 19:58:12,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 19:58:12,580 INFO L93 Difference]: Finished difference Result 24 states and 29 transitions. [2019-12-07 19:58:12,580 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-12-07 19:58:12,580 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 10 [2019-12-07 19:58:12,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 19:58:12,581 INFO L225 Difference]: With dead ends: 24 [2019-12-07 19:58:12,581 INFO L226 Difference]: Without dead ends: 24 [2019-12-07 19:58:12,581 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 17 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2019-12-07 19:58:12,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-12-07 19:58:12,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2019-12-07 19:58:12,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-12-07 19:58:12,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2019-12-07 19:58:12,583 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 10 [2019-12-07 19:58:12,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 19:58:12,583 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2019-12-07 19:58:12,583 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-12-07 19:58:12,583 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2019-12-07 19:58:12,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-12-07 19:58:12,584 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 19:58:12,584 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 19:58:12,784 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 19:58:12,785 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2019-12-07 19:58:12,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 19:58:12,786 INFO L82 PathProgramCache]: Analyzing trace with hash -813808975, now seen corresponding path program 1 times [2019-12-07 19:58:12,786 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 19:58:12,787 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517107669] [2019-12-07 19:58:12,787 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 19:58:12,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 19:58:12,823 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-07 19:58:12,823 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517107669] [2019-12-07 19:58:12,824 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [32406803] [2019-12-07 19:58:12,824 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3a22383f-64ab-4823-bdf1-4de8dae428eb/bin/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 19:58:12,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 19:58:12,847 INFO L264 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 19:58:12,847 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 19:58:12,858 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 19:58:12,858 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 19:58:12,868 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 19:58:12,869 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [512260760] [2019-12-07 19:58:12,870 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2019-12-07 19:58:12,870 INFO L166 IcfgInterpreter]: Building call graph [2019-12-07 19:58:12,871 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-12-07 19:58:12,871 INFO L176 IcfgInterpreter]: Starting interpretation [2019-12-07 19:58:12,871 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-12-07 19:58:12,902 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 19:58:12,973 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 19:58:12,978 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 19:58:13,305 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 19:58:13,324 INFO L180 IcfgInterpreter]: Interpretation finished [2019-12-07 19:58:13,739 WARN L192 SmtUtils]: Spent 369.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 85 [2019-12-07 19:58:14,137 WARN L192 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 50 [2019-12-07 19:58:14,412 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 19:58:14,412 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-12-07 19:58:14,412 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 4] total 8 [2019-12-07 19:58:14,412 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897246492] [2019-12-07 19:58:14,413 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-12-07 19:58:14,413 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 19:58:14,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-12-07 19:58:14,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2019-12-07 19:58:14,413 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand 8 states. [2019-12-07 19:58:14,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 19:58:14,530 INFO L93 Difference]: Finished difference Result 65 states and 70 transitions. [2019-12-07 19:58:14,531 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-12-07 19:58:14,531 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2019-12-07 19:58:14,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 19:58:14,531 INFO L225 Difference]: With dead ends: 65 [2019-12-07 19:58:14,531 INFO L226 Difference]: Without dead ends: 65 [2019-12-07 19:58:14,532 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=121, Invalid=431, Unknown=0, NotChecked=0, Total=552 [2019-12-07 19:58:14,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2019-12-07 19:58:14,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 43. [2019-12-07 19:58:14,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2019-12-07 19:58:14,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 48 transitions. [2019-12-07 19:58:14,535 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 48 transitions. Word has length 12 [2019-12-07 19:58:14,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 19:58:14,535 INFO L462 AbstractCegarLoop]: Abstraction has 43 states and 48 transitions. [2019-12-07 19:58:14,535 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-12-07 19:58:14,535 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions. [2019-12-07 19:58:14,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-12-07 19:58:14,536 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 19:58:14,536 INFO L410 BasicCegarLoop]: trace histogram [8, 8, 8, 2, 2, 1, 1, 1] [2019-12-07 19:58:14,736 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 19:58:14,737 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2019-12-07 19:58:14,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 19:58:14,738 INFO L82 PathProgramCache]: Analyzing trace with hash 1035171327, now seen corresponding path program 1 times [2019-12-07 19:58:14,738 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 19:58:14,739 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102243349] [2019-12-07 19:58:14,739 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 19:58:14,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 19:58:14,794 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 58 proven. 22 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2019-12-07 19:58:14,794 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102243349] [2019-12-07 19:58:14,794 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [960649837] [2019-12-07 19:58:14,794 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3a22383f-64ab-4823-bdf1-4de8dae428eb/bin/utaipan/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 19:58:14,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 19:58:14,826 INFO L264 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 8 conjunts are in the unsatisfiable core [2019-12-07 19:58:14,828 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 19:58:14,878 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 58 proven. 22 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2019-12-07 19:58:14,878 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 19:58:14,932 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 58 proven. 22 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2019-12-07 19:58:14,932 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [235972709] [2019-12-07 19:58:14,933 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2019-12-07 19:58:14,933 INFO L166 IcfgInterpreter]: Building call graph [2019-12-07 19:58:14,933 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-12-07 19:58:14,933 INFO L176 IcfgInterpreter]: Starting interpretation [2019-12-07 19:58:14,933 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-12-07 19:58:14,958 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 19:58:15,037 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 19:58:15,043 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 19:58:15,322 INFO L180 IcfgInterpreter]: Interpretation finished [2019-12-07 19:58:15,457 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 56 [2019-12-07 19:58:15,703 WARN L192 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 85 [2019-12-07 19:58:16,154 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 19:58:16,154 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-12-07 19:58:16,155 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2019-12-07 19:58:16,155 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128876488] [2019-12-07 19:58:16,155 INFO L442 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-12-07 19:58:16,155 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 19:58:16,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-12-07 19:58:16,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=321, Unknown=0, NotChecked=0, Total=462 [2019-12-07 19:58:16,156 INFO L87 Difference]: Start difference. First operand 43 states and 48 transitions. Second operand 17 states. [2019-12-07 19:58:16,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 19:58:16,194 INFO L93 Difference]: Finished difference Result 79 states and 84 transitions. [2019-12-07 19:58:16,194 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-12-07 19:58:16,194 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 31 [2019-12-07 19:58:16,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 19:58:16,195 INFO L225 Difference]: With dead ends: 79 [2019-12-07 19:58:16,195 INFO L226 Difference]: Without dead ends: 79 [2019-12-07 19:58:16,196 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 70 SyntacticMatches, 8 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=141, Invalid=321, Unknown=0, NotChecked=0, Total=462 [2019-12-07 19:58:16,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2019-12-07 19:58:16,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2019-12-07 19:58:16,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2019-12-07 19:58:16,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 84 transitions. [2019-12-07 19:58:16,201 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 84 transitions. Word has length 31 [2019-12-07 19:58:16,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 19:58:16,201 INFO L462 AbstractCegarLoop]: Abstraction has 79 states and 84 transitions. [2019-12-07 19:58:16,201 INFO L463 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-12-07 19:58:16,201 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 84 transitions. [2019-12-07 19:58:16,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2019-12-07 19:58:16,203 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 19:58:16,203 INFO L410 BasicCegarLoop]: trace histogram [20, 20, 20, 2, 2, 1, 1, 1] [2019-12-07 19:58:16,403 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 19:58:16,405 INFO L410 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2019-12-07 19:58:16,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 19:58:16,405 INFO L82 PathProgramCache]: Analyzing trace with hash 1659153023, now seen corresponding path program 2 times [2019-12-07 19:58:16,406 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 19:58:16,406 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023928544] [2019-12-07 19:58:16,406 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 19:58:16,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 19:58:16,542 INFO L134 CoverageAnalysis]: Checked inductivity of 613 backedges. 322 proven. 145 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2019-12-07 19:58:16,542 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023928544] [2019-12-07 19:58:16,542 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1778357837] [2019-12-07 19:58:16,543 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3a22383f-64ab-4823-bdf1-4de8dae428eb/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 [2019-12-07 19:58:16,572 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-12-07 19:58:16,572 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 19:58:16,572 INFO L264 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 10 conjunts are in the unsatisfiable core [2019-12-07 19:58:16,575 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 19:58:16,683 INFO L134 CoverageAnalysis]: Checked inductivity of 613 backedges. 1 proven. 322 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2019-12-07 19:58:16,683 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 19:58:16,744 INFO L134 CoverageAnalysis]: Checked inductivity of 613 backedges. 0 proven. 323 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2019-12-07 19:58:16,745 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1499472228] [2019-12-07 19:58:16,746 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2019-12-07 19:58:16,746 INFO L166 IcfgInterpreter]: Building call graph [2019-12-07 19:58:16,746 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-12-07 19:58:16,746 INFO L176 IcfgInterpreter]: Starting interpretation [2019-12-07 19:58:16,746 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-12-07 19:58:16,772 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 19:58:16,840 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 19:58:16,845 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 19:58:17,117 INFO L180 IcfgInterpreter]: Interpretation finished [2019-12-07 19:58:17,256 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 56 [2019-12-07 19:58:17,520 WARN L192 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 85 [2019-12-07 19:58:17,673 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 44 [2019-12-07 19:58:17,858 WARN L192 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 45 [2019-12-07 19:58:18,917 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 19:58:18,917 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-12-07 19:58:18,917 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 3, 3] total 19 [2019-12-07 19:58:18,917 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181022696] [2019-12-07 19:58:18,918 INFO L442 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-12-07 19:58:18,918 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 19:58:18,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-12-07 19:58:18,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=438, Unknown=0, NotChecked=0, Total=552 [2019-12-07 19:58:18,918 INFO L87 Difference]: Start difference. First operand 79 states and 84 transitions. Second operand 19 states. [2019-12-07 19:58:19,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 19:58:19,906 INFO L93 Difference]: Finished difference Result 89 states and 93 transitions. [2019-12-07 19:58:19,907 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2019-12-07 19:58:19,908 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 67 [2019-12-07 19:58:19,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 19:58:19,910 INFO L225 Difference]: With dead ends: 89 [2019-12-07 19:58:19,910 INFO L226 Difference]: Without dead ends: 89 [2019-12-07 19:58:19,913 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 170 SyntacticMatches, 20 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 762 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=606, Invalid=1556, Unknown=0, NotChecked=0, Total=2162 [2019-12-07 19:58:19,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2019-12-07 19:58:19,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 83. [2019-12-07 19:58:19,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2019-12-07 19:58:19,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 88 transitions. [2019-12-07 19:58:19,924 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 88 transitions. Word has length 67 [2019-12-07 19:58:19,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 19:58:19,925 INFO L462 AbstractCegarLoop]: Abstraction has 83 states and 88 transitions. [2019-12-07 19:58:19,925 INFO L463 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-12-07 19:58:19,925 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 88 transitions. [2019-12-07 19:58:19,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2019-12-07 19:58:19,928 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 19:58:19,929 INFO L410 BasicCegarLoop]: trace histogram [22, 22, 22, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2019-12-07 19:58:20,129 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 19:58:20,130 INFO L410 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2019-12-07 19:58:20,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 19:58:20,131 INFO L82 PathProgramCache]: Analyzing trace with hash -551879048, now seen corresponding path program 2 times [2019-12-07 19:58:20,131 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 19:58:20,131 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908896316] [2019-12-07 19:58:20,132 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 19:58:20,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 19:58:20,226 INFO L134 CoverageAnalysis]: Checked inductivity of 742 backedges. 0 proven. 390 refuted. 0 times theorem prover too weak. 352 trivial. 0 not checked. [2019-12-07 19:58:20,226 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908896316] [2019-12-07 19:58:20,226 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1400214429] [2019-12-07 19:58:20,227 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3a22383f-64ab-4823-bdf1-4de8dae428eb/bin/utaipan/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 19:58:20,252 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2019-12-07 19:58:20,252 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 19:58:20,253 INFO L264 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 10 conjunts are in the unsatisfiable core [2019-12-07 19:58:20,256 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 19:58:20,411 INFO L134 CoverageAnalysis]: Checked inductivity of 742 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 742 trivial. 0 not checked. [2019-12-07 19:58:20,412 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 19:58:20,441 INFO L134 CoverageAnalysis]: Checked inductivity of 742 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 742 trivial. 0 not checked. [2019-12-07 19:58:20,442 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-12-07 19:58:20,442 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [4] total 8 [2019-12-07 19:58:20,442 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231908633] [2019-12-07 19:58:20,442 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 19:58:20,442 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 19:58:20,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 19:58:20,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2019-12-07 19:58:20,443 INFO L87 Difference]: Start difference. First operand 83 states and 88 transitions. Second operand 6 states. [2019-12-07 19:58:20,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 19:58:20,498 INFO L93 Difference]: Finished difference Result 82 states and 87 transitions. [2019-12-07 19:58:20,499 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 19:58:20,499 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 78 [2019-12-07 19:58:20,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 19:58:20,499 INFO L225 Difference]: With dead ends: 82 [2019-12-07 19:58:20,499 INFO L226 Difference]: Without dead ends: 0 [2019-12-07 19:58:20,500 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2019-12-07 19:58:20,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-07 19:58:20,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-07 19:58:20,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-07 19:58:20,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-07 19:58:20,500 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 78 [2019-12-07 19:58:20,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 19:58:20,500 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 19:58:20,500 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 19:58:20,501 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-07 19:58:20,501 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-07 19:58:20,701 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 19:58:20,715 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 07:58:20 BoogieIcfgContainer [2019-12-07 19:58:20,715 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 19:58:20,716 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 19:58:20,716 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 19:58:20,717 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 19:58:20,718 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 07:58:09" (3/4) ... [2019-12-07 19:58:20,725 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-12-07 19:58:20,746 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2019-12-07 19:58:20,746 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2019-12-07 19:58:20,747 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-12-07 19:58:20,781 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_3a22383f-64ab-4823-bdf1-4de8dae428eb/bin/utaipan/witness.graphml [2019-12-07 19:58:20,781 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 19:58:20,781 INFO L168 Benchmark]: Toolchain (without parser) took 12253.45 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 274.2 MB). Free memory was 941.6 MB in the beginning and 1.1 GB in the end (delta: -194.9 MB). Peak memory consumption was 79.3 MB. Max. memory is 11.5 GB. [2019-12-07 19:58:20,782 INFO L168 Benchmark]: CDTParser took 0.19 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 19:58:20,782 INFO L168 Benchmark]: CACSL2BoogieTranslator took 175.88 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 98.6 MB). Free memory was 941.6 MB in the beginning and 1.1 GB in the end (delta: -151.8 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. [2019-12-07 19:58:20,782 INFO L168 Benchmark]: Boogie Procedure Inliner took 23.93 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 19:58:20,782 INFO L168 Benchmark]: Boogie Preprocessor took 15.62 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-12-07 19:58:20,782 INFO L168 Benchmark]: RCFGBuilder took 258.94 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: 28.0 MB). Peak memory consumption was 28.0 MB. Max. memory is 11.5 GB. [2019-12-07 19:58:20,783 INFO L168 Benchmark]: TraceAbstraction took 11710.39 ms. Allocated memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: 175.6 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -88.9 MB). Peak memory consumption was 86.8 MB. Max. memory is 11.5 GB. [2019-12-07 19:58:20,783 INFO L168 Benchmark]: Witness Printer took 64.67 ms. Allocated memory is still 1.3 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 12.4 MB). Peak memory consumption was 12.4 MB. Max. memory is 11.5 GB. [2019-12-07 19:58:20,784 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 957.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 175.88 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 98.6 MB). Free memory was 941.6 MB in the beginning and 1.1 GB in the end (delta: -151.8 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 23.93 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 15.62 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 258.94 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: 28.0 MB). Peak memory consumption was 28.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 11710.39 ms. Allocated memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: 175.6 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -88.9 MB). Peak memory consumption was 86.8 MB. Max. memory is 11.5 GB. * Witness Printer took 64.67 ms. Allocated memory is still 1.3 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 12.4 MB). Peak memory consumption was 12.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 16]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 30]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 30]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 21]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 16]: array index is always in bounds For all program executions holds that array index is always in bounds at this location - PositiveResult [Line: 27]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 27]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 16]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 19 locations, 8 error locations. Result: SAFE, OverallTime: 11.6s, OverallIterations: 12, TraceHistogramMax: 22, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 125 SDtfs, 295 SDslu, 187 SDs, 0 SdLazy, 578 SolverSat, 89 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 613 GetRequests, 445 SyntacticMatches, 35 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1232 ImplicationChecksByTransitivity, 6.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=83occurred in iteration=11, 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, 12 MinimizatonAttempts, 64 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 442 NumberOfCodeBlocks, 313 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 623 ConstructedInterpolants, 67 QuantifiedInterpolants, 478657 SizeOfPredicates, 10 NumberOfNonLiveVariables, 506 ConjunctsInSsa, 43 ConjunctsInUnsatCore, 24 InterpolantComputations, 8 PerfectInterpolantSequences, 3137/4394 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: OVERALL_TIME[ms]: 919, ICFG_INTERPRETER_ENTERED_PROCEDURES: 2, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 16, DAG_INTERPRETER_EARLY_EXITS: 0, TOOLS_POST_APPLICATIONS: 47, TOOLS_POST_TIME[ms]: 387, TOOLS_POST_CALL_APPLICATIONS: 0, TOOLS_POST_CALL_TIME[ms]: 0, TOOLS_POST_RETURN_APPLICATIONS: 0, TOOLS_POST_RETURN_TIME[ms]: 0, TOOLS_QUANTIFIERELIM_APPLICATIONS: 45, TOOLS_QUANTIFIERELIM_TIME[ms]: 375, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 89, FLUID_QUERY_TIME[ms]: 4, FLUID_QUERIES: 84, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 6, DOMAIN_JOIN_TIME[ms]: 197, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME[ms]: 0, DOMAIN_WIDEN_APPLICATIONS: 5, DOMAIN_WIDEN_TIME[ms]: 252, DOMAIN_ISSUBSETEQ_APPLICATIONS: 7, DOMAIN_ISSUBSETEQ_TIME[ms]: 20, DOMAIN_ISBOTTOM_APPLICATIONS: 16, DOMAIN_ISBOTTOM_TIME[ms]: 22, LOOP_SUMMARIZER_APPLICATIONS: 2, LOOP_SUMMARIZER_CACHE_MISSES: 2, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 725, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 724, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 7, CALL_SUMMARIZER_APPLICATIONS: 0, CALL_SUMMARIZER_CACHE_MISSES: 0, CALL_SUMMARIZER_OVERALL_TIME[ms]: 0, CALL_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 0, PROCEDURE_GRAPH_BUILDER_TIME[ms]: 2, PATH_EXPR_TIME[ms]: 2, REGEX_TO_DAG_TIME[ms]: 2, DAG_COMPRESSION_TIME[ms]: 8, DAG_COMPRESSION_PROCESSED_NODES: 111, DAG_COMPRESSION_RETAINED_NODES: 51, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...