./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength4.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_5183d364-77e0-4c0b-a755-c27e7bb8267a/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_5183d364-77e0-4c0b-a755-c27e7bb8267a/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_5183d364-77e0-4c0b-a755-c27e7bb8267a/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_5183d364-77e0-4c0b-a755-c27e7bb8267a/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength4.c -s /tmp/vcloud-vcloud-master/worker/run_dir_5183d364-77e0-4c0b-a755-c27e7bb8267a/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_5183d364-77e0-4c0b-a755-c27e7bb8267a/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 97fe3d28a1849ecc88958d9d302f4fb4c5dbb992 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 04:39:21,850 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 04:39:21,861 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 04:39:21,887 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 04:39:21,888 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 04:39:21,889 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 04:39:21,890 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 04:39:21,893 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 04:39:21,895 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 04:39:21,896 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 04:39:21,897 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 04:39:21,899 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 04:39:21,899 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 04:39:21,900 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 04:39:21,902 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 04:39:21,903 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 04:39:21,904 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 04:39:21,905 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 04:39:21,907 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 04:39:21,909 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 04:39:21,911 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 04:39:21,913 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 04:39:21,914 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 04:39:21,915 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 04:39:21,918 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 04:39:21,918 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 04:39:21,918 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 04:39:21,919 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 04:39:21,920 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 04:39:21,921 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 04:39:21,921 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 04:39:21,922 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 04:39:21,922 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 04:39:21,923 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 04:39:21,924 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 04:39:21,924 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 04:39:21,924 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 04:39:21,925 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 04:39:21,925 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 04:39:21,925 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 04:39:21,926 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 04:39:21,926 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_5183d364-77e0-4c0b-a755-c27e7bb8267a/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2020-12-09 04:39:21,949 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 04:39:21,949 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 04:39:21,950 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 04:39:21,950 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 04:39:21,950 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 04:39:21,950 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 04:39:21,951 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 04:39:21,951 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 04:39:21,951 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 04:39:21,951 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 04:39:21,951 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 04:39:21,951 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 04:39:21,951 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 04:39:21,952 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 04:39:21,952 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 04:39:21,952 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-09 04:39:21,952 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-09 04:39:21,953 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 04:39:21,953 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 04:39:21,953 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-09 04:39:21,953 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 04:39:21,953 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 04:39:21,953 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 04:39:21,953 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-09 04:39:21,954 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-09 04:39:21,954 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-12-09 04:39:21,954 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 04:39:21,954 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 04:39:21,954 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 04:39:21,954 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 04:39:21,955 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 04:39:21,955 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 04:39:21,955 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 04:39:21,955 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 04:39:21,955 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 04:39:21,955 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 04:39:21,956 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 04:39:21,956 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 04:39:21,956 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 04:39:21,956 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_5183d364-77e0-4c0b-a755-c27e7bb8267a/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_5183d364-77e0-4c0b-a755-c27e7bb8267a/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 97fe3d28a1849ecc88958d9d302f4fb4c5dbb992 [2020-12-09 04:39:22,145 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 04:39:22,160 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 04:39:22,162 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 04:39:22,163 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 04:39:22,163 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 04:39:22,164 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_5183d364-77e0-4c0b-a755-c27e7bb8267a/bin/utaipan/../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength4.c [2020-12-09 04:39:22,203 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5183d364-77e0-4c0b-a755-c27e7bb8267a/bin/utaipan/data/f5c29f12b/4d754445d26941ad846ae28f2b92fa33/FLAG100b6404b [2020-12-09 04:39:22,554 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 04:39:22,554 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_5183d364-77e0-4c0b-a755-c27e7bb8267a/sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength4.c [2020-12-09 04:39:22,558 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5183d364-77e0-4c0b-a755-c27e7bb8267a/bin/utaipan/data/f5c29f12b/4d754445d26941ad846ae28f2b92fa33/FLAG100b6404b [2020-12-09 04:39:22,981 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_5183d364-77e0-4c0b-a755-c27e7bb8267a/bin/utaipan/data/f5c29f12b/4d754445d26941ad846ae28f2b92fa33 [2020-12-09 04:39:22,984 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 04:39:22,985 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 04:39:22,986 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 04:39:22,986 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 04:39:22,989 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 04:39:22,990 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 04:39:22" (1/1) ... [2020-12-09 04:39:22,992 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69235599 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:39:22, skipping insertion in model container [2020-12-09 04:39:22,992 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 04:39:22" (1/1) ... [2020-12-09 04:39:22,998 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 04:39:23,007 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 04:39:23,098 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 04:39:23,103 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 04:39:23,114 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 04:39:23,123 INFO L208 MainTranslator]: Completed translation [2020-12-09 04:39:23,123 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:39:23 WrapperNode [2020-12-09 04:39:23,124 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 04:39:23,124 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 04:39:23,124 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 04:39:23,125 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 04:39:23,130 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:39:23" (1/1) ... [2020-12-09 04:39:23,134 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:39:23" (1/1) ... [2020-12-09 04:39:23,147 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 04:39:23,148 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 04:39:23,148 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 04:39:23,148 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 04:39:23,153 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:39:23" (1/1) ... [2020-12-09 04:39:23,153 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:39:23" (1/1) ... [2020-12-09 04:39:23,155 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:39:23" (1/1) ... [2020-12-09 04:39:23,155 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:39:23" (1/1) ... [2020-12-09 04:39:23,158 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:39:23" (1/1) ... [2020-12-09 04:39:23,161 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:39:23" (1/1) ... [2020-12-09 04:39:23,162 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:39:23" (1/1) ... [2020-12-09 04:39:23,163 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 04:39:23,164 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 04:39:23,164 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 04:39:23,164 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 04:39:23,165 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:39:23" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5183d364-77e0-4c0b-a755-c27e7bb8267a/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 [2020-12-09 04:39:23,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-09 04:39:23,218 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 04:39:23,218 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 04:39:23,218 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-09 04:39:23,218 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 04:39:23,218 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-09 04:39:23,442 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 04:39:23,443 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2020-12-09 04:39:23,444 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 04:39:23 BoogieIcfgContainer [2020-12-09 04:39:23,444 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 04:39:23,445 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 04:39:23,445 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 04:39:23,449 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 04:39:23,449 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 04:39:22" (1/3) ... [2020-12-09 04:39:23,450 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b059b98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 04:39:23, skipping insertion in model container [2020-12-09 04:39:23,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:39:23" (2/3) ... [2020-12-09 04:39:23,450 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b059b98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 04:39:23, skipping insertion in model container [2020-12-09 04:39:23,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 04:39:23" (3/3) ... [2020-12-09 04:39:23,452 INFO L111 eAbstractionObserver]: Analyzing ICFG ArraysOfVariableLength4.c [2020-12-09 04:39:23,462 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 04:39:23,464 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 8 error locations. [2020-12-09 04:39:23,471 INFO L253 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2020-12-09 04:39:23,489 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 04:39:23,490 INFO L378 AbstractCegarLoop]: Hoare is false [2020-12-09 04:39:23,490 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 04:39:23,490 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 04:39:23,490 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 04:39:23,490 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 04:39:23,490 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 04:39:23,490 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 04:39:23,502 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-12-09 04:39:23,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-12-09 04:39:23,505 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 04:39:23,506 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-12-09 04:39:23,506 INFO L429 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]=== [2020-12-09 04:39:23,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 04:39:23,510 INFO L82 PathProgramCache]: Analyzing trace with hash 3118125, now seen corresponding path program 1 times [2020-12-09 04:39:23,516 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 04:39:23,516 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360008924] [2020-12-09 04:39:23,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 04:39:23,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 04:39:23,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 04:39:23,625 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360008924] [2020-12-09 04:39:23,625 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 04:39:23,625 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 04:39:23,626 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001391987] [2020-12-09 04:39:23,630 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 04:39:23,630 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 04:39:23,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 04:39:23,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 04:39:23,646 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 3 states. [2020-12-09 04:39:23,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 04:39:23,681 INFO L93 Difference]: Finished difference Result 37 states and 41 transitions. [2020-12-09 04:39:23,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 04:39:23,682 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-12-09 04:39:23,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 04:39:23,688 INFO L225 Difference]: With dead ends: 37 [2020-12-09 04:39:23,688 INFO L226 Difference]: Without dead ends: 35 [2020-12-09 04:39:23,689 INFO L677 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 [2020-12-09 04:39:23,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-12-09 04:39:23,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 20. [2020-12-09 04:39:23,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-12-09 04:39:23,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2020-12-09 04:39:23,711 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 4 [2020-12-09 04:39:23,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 04:39:23,711 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2020-12-09 04:39:23,711 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 04:39:23,711 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2020-12-09 04:39:23,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-12-09 04:39:23,712 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 04:39:23,712 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-12-09 04:39:23,712 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 04:39:23,712 INFO L429 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]=== [2020-12-09 04:39:23,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 04:39:23,713 INFO L82 PathProgramCache]: Analyzing trace with hash 3048869, now seen corresponding path program 1 times [2020-12-09 04:39:23,713 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 04:39:23,713 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707512348] [2020-12-09 04:39:23,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 04:39:23,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 04:39:23,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 04:39:23,735 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707512348] [2020-12-09 04:39:23,735 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 04:39:23,735 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 04:39:23,735 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356317485] [2020-12-09 04:39:23,736 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 04:39:23,737 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 04:39:23,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 04:39:23,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 04:39:23,738 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand 3 states. [2020-12-09 04:39:23,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 04:39:23,760 INFO L93 Difference]: Finished difference Result 37 states and 43 transitions. [2020-12-09 04:39:23,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 04:39:23,761 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-12-09 04:39:23,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 04:39:23,762 INFO L225 Difference]: With dead ends: 37 [2020-12-09 04:39:23,762 INFO L226 Difference]: Without dead ends: 37 [2020-12-09 04:39:23,763 INFO L677 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 [2020-12-09 04:39:23,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-12-09 04:39:23,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 22. [2020-12-09 04:39:23,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-12-09 04:39:23,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2020-12-09 04:39:23,767 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 4 [2020-12-09 04:39:23,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 04:39:23,767 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2020-12-09 04:39:23,767 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 04:39:23,767 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2020-12-09 04:39:23,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-12-09 04:39:23,768 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 04:39:23,768 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-12-09 04:39:23,768 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 04:39:23,768 INFO L429 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]=== [2020-12-09 04:39:23,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 04:39:23,773 INFO L82 PathProgramCache]: Analyzing trace with hash 3050899, now seen corresponding path program 1 times [2020-12-09 04:39:23,773 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 04:39:23,773 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25891681] [2020-12-09 04:39:23,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 04:39:23,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 04:39:23,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 04:39:23,805 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25891681] [2020-12-09 04:39:23,805 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 04:39:23,805 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 04:39:23,805 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456503941] [2020-12-09 04:39:23,805 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 04:39:23,806 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 04:39:23,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 04:39:23,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 04:39:23,807 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand 3 states. [2020-12-09 04:39:23,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 04:39:23,820 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2020-12-09 04:39:23,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 04:39:23,820 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-12-09 04:39:23,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 04:39:23,821 INFO L225 Difference]: With dead ends: 25 [2020-12-09 04:39:23,821 INFO L226 Difference]: Without dead ends: 25 [2020-12-09 04:39:23,821 INFO L677 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 [2020-12-09 04:39:23,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-12-09 04:39:23,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 22. [2020-12-09 04:39:23,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-12-09 04:39:23,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2020-12-09 04:39:23,824 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 4 [2020-12-09 04:39:23,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 04:39:23,824 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2020-12-09 04:39:23,824 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 04:39:23,824 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2020-12-09 04:39:23,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-09 04:39:23,824 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 04:39:23,824 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-09 04:39:23,825 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-09 04:39:23,825 INFO L429 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]=== [2020-12-09 04:39:23,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 04:39:23,825 INFO L82 PathProgramCache]: Analyzing trace with hash 94514992, now seen corresponding path program 1 times [2020-12-09 04:39:23,825 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 04:39:23,826 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360599970] [2020-12-09 04:39:23,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 04:39:23,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 04:39:23,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 04:39:23,850 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360599970] [2020-12-09 04:39:23,850 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 04:39:23,850 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 04:39:23,850 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108707751] [2020-12-09 04:39:23,850 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 04:39:23,851 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 04:39:23,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 04:39:23,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 04:39:23,851 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand 4 states. [2020-12-09 04:39:23,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 04:39:23,879 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2020-12-09 04:39:23,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 04:39:23,880 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2020-12-09 04:39:23,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 04:39:23,881 INFO L225 Difference]: With dead ends: 21 [2020-12-09 04:39:23,881 INFO L226 Difference]: Without dead ends: 21 [2020-12-09 04:39:23,881 INFO L677 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 [2020-12-09 04:39:23,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-12-09 04:39:23,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-12-09 04:39:23,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-12-09 04:39:23,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2020-12-09 04:39:23,884 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 5 [2020-12-09 04:39:23,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 04:39:23,885 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2020-12-09 04:39:23,885 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 04:39:23,885 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2020-12-09 04:39:23,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-09 04:39:23,885 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 04:39:23,885 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-09 04:39:23,886 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-09 04:39:23,886 INFO L429 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]=== [2020-12-09 04:39:23,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 04:39:23,886 INFO L82 PathProgramCache]: Analyzing trace with hash 94514993, now seen corresponding path program 1 times [2020-12-09 04:39:23,887 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 04:39:23,887 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125134426] [2020-12-09 04:39:23,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 04:39:23,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 04:39:23,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 04:39:23,930 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125134426] [2020-12-09 04:39:23,930 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 04:39:23,930 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 04:39:23,930 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902233645] [2020-12-09 04:39:23,930 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 04:39:23,930 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 04:39:23,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 04:39:23,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 04:39:23,931 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand 4 states. [2020-12-09 04:39:23,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 04:39:23,964 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2020-12-09 04:39:23,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 04:39:23,964 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2020-12-09 04:39:23,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 04:39:23,965 INFO L225 Difference]: With dead ends: 22 [2020-12-09 04:39:23,965 INFO L226 Difference]: Without dead ends: 22 [2020-12-09 04:39:23,965 INFO L677 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 [2020-12-09 04:39:23,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-12-09 04:39:23,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-12-09 04:39:23,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-12-09 04:39:23,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2020-12-09 04:39:23,967 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 5 [2020-12-09 04:39:23,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 04:39:23,967 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2020-12-09 04:39:23,967 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 04:39:23,968 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2020-12-09 04:39:23,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-09 04:39:23,968 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 04:39:23,968 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2020-12-09 04:39:23,968 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-09 04:39:23,968 INFO L429 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]=== [2020-12-09 04:39:23,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 04:39:23,969 INFO L82 PathProgramCache]: Analyzing trace with hash 634647528, now seen corresponding path program 1 times [2020-12-09 04:39:23,969 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 04:39:23,969 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794499179] [2020-12-09 04:39:23,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 04:39:23,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 04:39:23,993 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 04:39:23,994 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794499179] [2020-12-09 04:39:23,994 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1452600972] [2020-12-09 04:39:23,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5183d364-77e0-4c0b-a755-c27e7bb8267a/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 [2020-12-09 04:39:24,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 04:39:24,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-09 04:39:24,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 04:39:24,043 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 04:39:24,044 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 04:39:24,066 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 04:39:24,066 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [804672121] [2020-12-09 04:39:24,080 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2020-12-09 04:39:24,080 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 04:39:24,087 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 04:39:24,091 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 04:39:24,092 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 04:39:24,477 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 04:39:24,771 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 38 [2020-12-09 04:39:24,786 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2020-12-09 04:39:24,786 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3, 3] total 8 [2020-12-09 04:39:24,787 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449015343] [2020-12-09 04:39:24,787 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 04:39:24,787 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 04:39:24,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 04:39:24,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-12-09 04:39:24,788 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand 5 states. [2020-12-09 04:39:24,920 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 59 [2020-12-09 04:39:25,057 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 58 [2020-12-09 04:39:25,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 04:39:25,120 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2020-12-09 04:39:25,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 04:39:25,120 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2020-12-09 04:39:25,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 04:39:25,121 INFO L225 Difference]: With dead ends: 30 [2020-12-09 04:39:25,121 INFO L226 Difference]: Without dead ends: 30 [2020-12-09 04:39:25,121 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2020-12-09 04:39:25,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-12-09 04:39:25,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2020-12-09 04:39:25,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-12-09 04:39:25,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2020-12-09 04:39:25,123 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 7 [2020-12-09 04:39:25,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 04:39:25,124 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2020-12-09 04:39:25,124 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 04:39:25,124 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2020-12-09 04:39:25,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-09 04:39:25,124 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 04:39:25,124 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1] [2020-12-09 04:39:25,325 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-12-09 04:39:25,326 INFO L429 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]=== [2020-12-09 04:39:25,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 04:39:25,327 INFO L82 PathProgramCache]: Analyzing trace with hash -1800763058, now seen corresponding path program 1 times [2020-12-09 04:39:25,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 04:39:25,328 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240167609] [2020-12-09 04:39:25,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 04:39:25,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 04:39:25,477 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-09 04:39:25,477 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240167609] [2020-12-09 04:39:25,477 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 04:39:25,477 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 04:39:25,477 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566698530] [2020-12-09 04:39:25,478 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 04:39:25,478 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 04:39:25,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 04:39:25,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 04:39:25,479 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. Second operand 5 states. [2020-12-09 04:39:25,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 04:39:25,525 INFO L93 Difference]: Finished difference Result 28 states and 32 transitions. [2020-12-09 04:39:25,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 04:39:25,526 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-12-09 04:39:25,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 04:39:25,526 INFO L225 Difference]: With dead ends: 28 [2020-12-09 04:39:25,526 INFO L226 Difference]: Without dead ends: 28 [2020-12-09 04:39:25,527 INFO L677 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 [2020-12-09 04:39:25,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-12-09 04:39:25,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 25. [2020-12-09 04:39:25,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-12-09 04:39:25,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2020-12-09 04:39:25,529 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 8 [2020-12-09 04:39:25,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 04:39:25,529 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2020-12-09 04:39:25,529 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 04:39:25,530 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2020-12-09 04:39:25,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 04:39:25,530 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 04:39:25,530 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 04:39:25,530 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-09 04:39:25,530 INFO L429 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]=== [2020-12-09 04:39:25,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 04:39:25,531 INFO L82 PathProgramCache]: Analyzing trace with hash 400365424, now seen corresponding path program 1 times [2020-12-09 04:39:25,531 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 04:39:25,531 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829093148] [2020-12-09 04:39:25,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 04:39:25,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 04:39:25,555 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-09 04:39:25,556 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829093148] [2020-12-09 04:39:25,556 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [943561621] [2020-12-09 04:39:25,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5183d364-77e0-4c0b-a755-c27e7bb8267a/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 [2020-12-09 04:39:25,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 04:39:25,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 04:39:25,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 04:39:25,595 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-09 04:39:25,595 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 04:39:25,602 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-09 04:39:25,602 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 04:39:25,602 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [3] total 5 [2020-12-09 04:39:25,602 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849110764] [2020-12-09 04:39:25,602 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 04:39:25,602 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 04:39:25,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 04:39:25,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 04:39:25,603 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand 3 states. [2020-12-09 04:39:25,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 04:39:25,614 INFO L93 Difference]: Finished difference Result 23 states and 27 transitions. [2020-12-09 04:39:25,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 04:39:25,614 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-12-09 04:39:25,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 04:39:25,614 INFO L225 Difference]: With dead ends: 23 [2020-12-09 04:39:25,615 INFO L226 Difference]: Without dead ends: 23 [2020-12-09 04:39:25,615 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 04:39:25,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-12-09 04:39:25,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-12-09 04:39:25,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-12-09 04:39:25,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2020-12-09 04:39:25,617 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 10 [2020-12-09 04:39:25,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 04:39:25,617 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2020-12-09 04:39:25,617 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 04:39:25,617 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2020-12-09 04:39:25,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 04:39:25,617 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 04:39:25,617 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 04:39:25,818 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 04:39:25,819 INFO L429 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]=== [2020-12-09 04:39:25,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 04:39:25,820 INFO L82 PathProgramCache]: Analyzing trace with hash 400365425, now seen corresponding path program 1 times [2020-12-09 04:39:25,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 04:39:25,821 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259570911] [2020-12-09 04:39:25,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 04:39:25,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 04:39:25,915 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-09 04:39:25,916 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259570911] [2020-12-09 04:39:25,917 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1577948437] [2020-12-09 04:39:25,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5183d364-77e0-4c0b-a755-c27e7bb8267a/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 [2020-12-09 04:39:25,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 04:39:25,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-09 04:39:26,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 04:39:26,034 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 04:39:26,034 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 04:39:26,065 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 04:39:26,065 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [124813929] [2020-12-09 04:39:26,066 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2020-12-09 04:39:26,066 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 04:39:26,067 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 04:39:26,067 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 04:39:26,067 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 04:39:26,116 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 04:39:26,278 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 04:39:26,289 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 04:39:26,690 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 04:39:27,053 WARN L197 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 80 [2020-12-09 04:39:27,434 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2020-12-09 04:39:27,435 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [3, 4, 4] total 13 [2020-12-09 04:39:27,435 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528518783] [2020-12-09 04:39:27,435 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-09 04:39:27,435 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 04:39:27,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-09 04:39:27,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-12-09 04:39:27,436 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand 7 states. [2020-12-09 04:39:27,655 WARN L197 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 81 [2020-12-09 04:39:27,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 04:39:27,707 INFO L93 Difference]: Finished difference Result 24 states and 29 transitions. [2020-12-09 04:39:27,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-09 04:39:27,707 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 10 [2020-12-09 04:39:27,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 04:39:27,707 INFO L225 Difference]: With dead ends: 24 [2020-12-09 04:39:27,707 INFO L226 Difference]: Without dead ends: 24 [2020-12-09 04:39:27,708 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 17 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2020-12-09 04:39:27,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-12-09 04:39:27,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2020-12-09 04:39:27,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-12-09 04:39:27,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2020-12-09 04:39:27,709 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 10 [2020-12-09 04:39:27,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 04:39:27,709 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2020-12-09 04:39:27,709 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-09 04:39:27,709 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2020-12-09 04:39:27,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-09 04:39:27,710 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 04:39:27,710 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 04:39:27,910 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2020-12-09 04:39:27,911 INFO L429 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]=== [2020-12-09 04:39:27,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 04:39:27,913 INFO L82 PathProgramCache]: Analyzing trace with hash -1795882651, now seen corresponding path program 1 times [2020-12-09 04:39:27,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 04:39:27,914 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493899807] [2020-12-09 04:39:27,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 04:39:27,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 04:39:27,965 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-09 04:39:27,965 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493899807] [2020-12-09 04:39:27,965 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1453807476] [2020-12-09 04:39:27,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5183d364-77e0-4c0b-a755-c27e7bb8267a/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 [2020-12-09 04:39:27,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 04:39:27,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-09 04:39:27,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 04:39:28,026 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 04:39:28,026 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 04:39:28,051 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 04:39:28,052 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1123070556] [2020-12-09 04:39:28,053 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2020-12-09 04:39:28,053 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 04:39:28,054 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 04:39:28,054 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 04:39:28,054 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 04:39:28,089 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 04:39:28,168 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 04:39:28,174 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 04:39:28,497 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 04:39:28,835 WARN L197 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 80 [2020-12-09 04:39:29,239 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 04:39:29,239 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-12-09 04:39:29,240 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 4] total 8 [2020-12-09 04:39:29,240 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733674100] [2020-12-09 04:39:29,240 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-09 04:39:29,240 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 04:39:29,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-09 04:39:29,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2020-12-09 04:39:29,240 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand 8 states. [2020-12-09 04:39:29,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 04:39:29,359 INFO L93 Difference]: Finished difference Result 65 states and 70 transitions. [2020-12-09 04:39:29,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-12-09 04:39:29,359 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2020-12-09 04:39:29,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 04:39:29,360 INFO L225 Difference]: With dead ends: 65 [2020-12-09 04:39:29,360 INFO L226 Difference]: Without dead ends: 65 [2020-12-09 04:39:29,360 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=121, Invalid=431, Unknown=0, NotChecked=0, Total=552 [2020-12-09 04:39:29,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-12-09 04:39:29,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 43. [2020-12-09 04:39:29,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-12-09 04:39:29,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 48 transitions. [2020-12-09 04:39:29,363 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 48 transitions. Word has length 12 [2020-12-09 04:39:29,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 04:39:29,363 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 48 transitions. [2020-12-09 04:39:29,363 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-09 04:39:29,363 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions. [2020-12-09 04:39:29,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-09 04:39:29,364 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 04:39:29,364 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 2, 2, 1, 1, 1] [2020-12-09 04:39:29,564 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 04:39:29,566 INFO L429 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]=== [2020-12-09 04:39:29,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 04:39:29,567 INFO L82 PathProgramCache]: Analyzing trace with hash -982673158, now seen corresponding path program 1 times [2020-12-09 04:39:29,567 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 04:39:29,568 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380238581] [2020-12-09 04:39:29,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 04:39:29,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 04:39:29,629 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 58 proven. 22 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-12-09 04:39:29,629 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380238581] [2020-12-09 04:39:29,629 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1783121398] [2020-12-09 04:39:29,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5183d364-77e0-4c0b-a755-c27e7bb8267a/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 [2020-12-09 04:39:29,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 04:39:29,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-09 04:39:29,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 04:39:29,725 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 58 proven. 22 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-12-09 04:39:29,725 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 04:39:29,802 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 58 proven. 22 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-12-09 04:39:29,802 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1726707889] [2020-12-09 04:39:29,803 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2020-12-09 04:39:29,803 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 04:39:29,804 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 04:39:29,804 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 04:39:29,804 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 04:39:29,834 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 04:39:29,910 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 04:39:29,915 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 04:39:30,161 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 04:39:30,593 WARN L197 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 80 [2020-12-09 04:39:31,019 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 04:39:31,019 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-12-09 04:39:31,019 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2020-12-09 04:39:31,020 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441040487] [2020-12-09 04:39:31,020 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-12-09 04:39:31,020 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 04:39:31,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-12-09 04:39:31,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=321, Unknown=0, NotChecked=0, Total=462 [2020-12-09 04:39:31,021 INFO L87 Difference]: Start difference. First operand 43 states and 48 transitions. Second operand 17 states. [2020-12-09 04:39:31,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 04:39:31,066 INFO L93 Difference]: Finished difference Result 79 states and 84 transitions. [2020-12-09 04:39:31,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-09 04:39:31,066 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 31 [2020-12-09 04:39:31,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 04:39:31,067 INFO L225 Difference]: With dead ends: 79 [2020-12-09 04:39:31,067 INFO L226 Difference]: Without dead ends: 79 [2020-12-09 04:39:31,067 INFO L677 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 [2020-12-09 04:39:31,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-12-09 04:39:31,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2020-12-09 04:39:31,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-12-09 04:39:31,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 84 transitions. [2020-12-09 04:39:31,071 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 84 transitions. Word has length 31 [2020-12-09 04:39:31,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 04:39:31,071 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 84 transitions. [2020-12-09 04:39:31,071 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-12-09 04:39:31,071 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 84 transitions. [2020-12-09 04:39:31,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-09 04:39:31,073 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 04:39:31,073 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 2, 2, 1, 1, 1] [2020-12-09 04:39:31,273 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable134 [2020-12-09 04:39:31,274 INFO L429 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]=== [2020-12-09 04:39:31,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 04:39:31,275 INFO L82 PathProgramCache]: Analyzing trace with hash -2066593926, now seen corresponding path program 2 times [2020-12-09 04:39:31,275 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 04:39:31,276 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146424984] [2020-12-09 04:39:31,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 04:39:31,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 04:39:31,427 INFO L134 CoverageAnalysis]: Checked inductivity of 613 backedges. 322 proven. 145 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2020-12-09 04:39:31,427 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146424984] [2020-12-09 04:39:31,427 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1982799885] [2020-12-09 04:39:31,427 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5183d364-77e0-4c0b-a755-c27e7bb8267a/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 [2020-12-09 04:39:31,462 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-09 04:39:31,462 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-09 04:39:31,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-09 04:39:31,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 04:39:31,682 INFO L134 CoverageAnalysis]: Checked inductivity of 613 backedges. 323 proven. 0 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2020-12-09 04:39:31,682 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 04:39:31,842 INFO L134 CoverageAnalysis]: Checked inductivity of 613 backedges. 0 proven. 323 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2020-12-09 04:39:31,843 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2020-12-09 04:39:31,843 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [13, 3] total 19 [2020-12-09 04:39:31,843 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918591424] [2020-12-09 04:39:31,843 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 04:39:31,844 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 04:39:31,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 04:39:31,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=241, Unknown=0, NotChecked=0, Total=342 [2020-12-09 04:39:31,844 INFO L87 Difference]: Start difference. First operand 79 states and 84 transitions. Second operand 5 states. [2020-12-09 04:39:31,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 04:39:31,887 INFO L93 Difference]: Finished difference Result 77 states and 82 transitions. [2020-12-09 04:39:31,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 04:39:31,888 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 67 [2020-12-09 04:39:31,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 04:39:31,889 INFO L225 Difference]: With dead ends: 77 [2020-12-09 04:39:31,889 INFO L226 Difference]: Without dead ends: 77 [2020-12-09 04:39:31,890 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=101, Invalid=241, Unknown=0, NotChecked=0, Total=342 [2020-12-09 04:39:31,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-12-09 04:39:31,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2020-12-09 04:39:31,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-12-09 04:39:31,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 82 transitions. [2020-12-09 04:39:31,895 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 82 transitions. Word has length 67 [2020-12-09 04:39:31,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 04:39:31,895 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 82 transitions. [2020-12-09 04:39:31,896 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 04:39:31,896 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 82 transitions. [2020-12-09 04:39:31,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-12-09 04:39:31,897 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 04:39:31,897 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-12-09 04:39:32,098 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 04:39:32,099 INFO L429 AbstractCegarLoop]: === Iteration 13 === [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]=== [2020-12-09 04:39:32,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 04:39:32,100 INFO L82 PathProgramCache]: Analyzing trace with hash -162298974, now seen corresponding path program 2 times [2020-12-09 04:39:32,100 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 04:39:32,101 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915451323] [2020-12-09 04:39:32,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 04:39:32,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 04:39:32,340 INFO L134 CoverageAnalysis]: Checked inductivity of 615 backedges. 323 proven. 145 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2020-12-09 04:39:32,341 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915451323] [2020-12-09 04:39:32,341 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1298671373] [2020-12-09 04:39:32,341 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5183d364-77e0-4c0b-a755-c27e7bb8267a/bin/utaipan/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 04:39:32,366 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2020-12-09 04:39:32,367 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-09 04:39:32,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-09 04:39:32,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 04:39:32,653 INFO L134 CoverageAnalysis]: Checked inductivity of 615 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 615 trivial. 0 not checked. [2020-12-09 04:39:32,653 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 04:39:32,717 INFO L134 CoverageAnalysis]: Checked inductivity of 615 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 615 trivial. 0 not checked. [2020-12-09 04:39:32,717 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 04:39:32,718 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [13] total 17 [2020-12-09 04:39:32,718 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906421965] [2020-12-09 04:39:32,718 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 04:39:32,718 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 04:39:32,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 04:39:32,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2020-12-09 04:39:32,719 INFO L87 Difference]: Start difference. First operand 77 states and 82 transitions. Second operand 6 states. [2020-12-09 04:39:32,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 04:39:32,785 INFO L93 Difference]: Finished difference Result 76 states and 81 transitions. [2020-12-09 04:39:32,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 04:39:32,785 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 72 [2020-12-09 04:39:32,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 04:39:32,786 INFO L225 Difference]: With dead ends: 76 [2020-12-09 04:39:32,786 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 04:39:32,786 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=94, Invalid=248, Unknown=0, NotChecked=0, Total=342 [2020-12-09 04:39:32,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 04:39:32,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 04:39:32,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 04:39:32,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 04:39:32,786 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 72 [2020-12-09 04:39:32,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 04:39:32,787 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 04:39:32,787 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 04:39:32,787 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 04:39:32,787 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 04:39:32,987 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 04:39:32,999 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 04:39:32 BoogieIcfgContainer [2020-12-09 04:39:32,999 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 04:39:33,001 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 04:39:33,001 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 04:39:33,001 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 04:39:33,002 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 04:39:23" (3/4) ... [2020-12-09 04:39:33,009 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 04:39:33,028 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2020-12-09 04:39:33,028 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2020-12-09 04:39:33,029 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-12-09 04:39:33,054 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_5183d364-77e0-4c0b-a755-c27e7bb8267a/bin/utaipan/witness.graphml [2020-12-09 04:39:33,055 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 04:39:33,055 INFO L168 Benchmark]: Toolchain (without parser) took 10069.85 ms. Allocated memory was 92.3 MB in the beginning and 134.2 MB in the end (delta: 41.9 MB). Free memory was 70.3 MB in the beginning and 46.8 MB in the end (delta: 23.5 MB). Peak memory consumption was 64.8 MB. Max. memory is 16.1 GB. [2020-12-09 04:39:33,055 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 67.1 MB. Free memory is still 42.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 04:39:33,056 INFO L168 Benchmark]: CACSL2BoogieTranslator took 137.50 ms. Allocated memory is still 92.3 MB. Free memory was 70.3 MB in the beginning and 61.2 MB in the end (delta: 9.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-09 04:39:33,056 INFO L168 Benchmark]: Boogie Procedure Inliner took 22.76 ms. Allocated memory is still 92.3 MB. Free memory was 61.2 MB in the beginning and 59.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 04:39:33,056 INFO L168 Benchmark]: Boogie Preprocessor took 16.05 ms. Allocated memory is still 92.3 MB. Free memory was 59.9 MB in the beginning and 58.7 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 04:39:33,056 INFO L168 Benchmark]: RCFGBuilder took 280.12 ms. Allocated memory is still 92.3 MB. Free memory was 58.7 MB in the beginning and 56.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-09 04:39:33,057 INFO L168 Benchmark]: TraceAbstraction took 9554.45 ms. Allocated memory was 92.3 MB in the beginning and 134.2 MB in the end (delta: 41.9 MB). Free memory was 56.4 MB in the beginning and 49.6 MB in the end (delta: 6.8 MB). Peak memory consumption was 52.6 MB. Max. memory is 16.1 GB. [2020-12-09 04:39:33,057 INFO L168 Benchmark]: Witness Printer took 54.07 ms. Allocated memory is still 134.2 MB. Free memory was 49.6 MB in the beginning and 46.8 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 04:39:33,058 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 67.1 MB. Free memory is still 42.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 137.50 ms. Allocated memory is still 92.3 MB. Free memory was 70.3 MB in the beginning and 61.2 MB in the end (delta: 9.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 22.76 ms. Allocated memory is still 92.3 MB. Free memory was 61.2 MB in the beginning and 59.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 16.05 ms. Allocated memory is still 92.3 MB. Free memory was 59.9 MB in the beginning and 58.7 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 280.12 ms. Allocated memory is still 92.3 MB. Free memory was 58.7 MB in the beginning and 56.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 9554.45 ms. Allocated memory was 92.3 MB in the beginning and 134.2 MB in the end (delta: 41.9 MB). Free memory was 56.4 MB in the beginning and 49.6 MB in the end (delta: 6.8 MB). Peak memory consumption was 52.6 MB. Max. memory is 16.1 GB. * Witness Printer took 54.07 ms. Allocated memory is still 134.2 MB. Free memory was 49.6 MB in the beginning and 46.8 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 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: 29]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 29]: 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: 26]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 26]: 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. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 9.5s, OverallIterations: 13, TraceHistogramMax: 20, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 137 SDtfs, 256 SDslu, 126 SDs, 0 SdLazy, 377 SolverSat, 63 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 540 GetRequests, 410 SyntacticMatches, 16 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 552 ImplicationChecksByTransitivity, 3.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=79occurred 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, 13 MinimizatonAttempts, 61 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 448 NumberOfCodeBlocks, 325 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 630 ConstructedInterpolants, 67 QuantifiedInterpolants, 488061 SizeOfPredicates, 11 NumberOfNonLiveVariables, 546 ConjunctsInSsa, 45 ConjunctsInUnsatCore, 27 InterpolantComputations, 11 PerfectInterpolantSequences, 3328/4020 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: OVERALL_TIME[ms]: 1021, 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]: 505, 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]: 492, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 103, FLUID_QUERY_TIME[ms]: 4, FLUID_QUERIES: 84, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 6, DOMAIN_JOIN_TIME[ms]: 189, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME[ms]: 0, DOMAIN_WIDEN_APPLICATIONS: 5, DOMAIN_WIDEN_TIME[ms]: 246, DOMAIN_ISSUBSETEQ_APPLICATIONS: 7, DOMAIN_ISSUBSETEQ_TIME[ms]: 17, DOMAIN_ISBOTTOM_APPLICATIONS: 16, DOMAIN_ISBOTTOM_TIME[ms]: 19, LOOP_SUMMARIZER_APPLICATIONS: 2, LOOP_SUMMARIZER_CACHE_MISSES: 2, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 800, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 800, 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]: 1, PATH_EXPR_TIME[ms]: 2, REGEX_TO_DAG_TIME[ms]: 3, DAG_COMPRESSION_TIME[ms]: 9, DAG_COMPRESSION_PROCESSED_NODES: 110, DAG_COMPRESSION_RETAINED_NODES: 51, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...