./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 f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_f5f4ba74-290d-4ef9-8a08-839b223015b6/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_f5f4ba74-290d-4ef9-8a08-839b223015b6/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_f5f4ba74-290d-4ef9-8a08-839b223015b6/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_f5f4ba74-290d-4ef9-8a08-839b223015b6/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength4.c -s /tmp/vcloud-vcloud-master/worker/run_dir_f5f4ba74-290d-4ef9-8a08-839b223015b6/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_f5f4ba74-290d-4ef9-8a08-839b223015b6/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 0.1.25-f470102 [2019-12-07 14:23:19,292 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 14:23:19,293 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 14:23:19,301 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 14:23:19,301 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 14:23:19,301 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 14:23:19,302 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 14:23:19,304 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 14:23:19,305 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 14:23:19,305 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 14:23:19,306 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 14:23:19,307 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 14:23:19,307 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 14:23:19,308 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 14:23:19,308 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 14:23:19,309 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 14:23:19,310 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 14:23:19,311 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 14:23:19,312 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 14:23:19,314 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 14:23:19,315 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 14:23:19,315 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 14:23:19,316 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 14:23:19,316 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 14:23:19,318 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 14:23:19,318 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 14:23:19,318 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 14:23:19,319 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 14:23:19,319 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 14:23:19,320 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 14:23:19,320 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 14:23:19,320 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 14:23:19,321 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 14:23:19,322 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 14:23:19,322 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 14:23:19,323 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 14:23:19,323 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 14:23:19,323 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 14:23:19,323 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 14:23:19,324 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 14:23:19,325 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 14:23:19,325 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_f5f4ba74-290d-4ef9-8a08-839b223015b6/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2019-12-07 14:23:19,339 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 14:23:19,339 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 14:23:19,340 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 14:23:19,340 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 14:23:19,340 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 14:23:19,340 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 14:23:19,340 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-12-07 14:23:19,341 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 14:23:19,341 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 14:23:19,341 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-12-07 14:23:19,341 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-12-07 14:23:19,341 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 14:23:19,341 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-12-07 14:23:19,341 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-12-07 14:23:19,341 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-12-07 14:23:19,342 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 14:23:19,342 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 14:23:19,342 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 14:23:19,342 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 14:23:19,342 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-12-07 14:23:19,343 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 14:23:19,343 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 14:23:19,343 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 14:23:19,343 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-12-07 14:23:19,343 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-12-07 14:23:19,343 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-12-07 14:23:19,343 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 14:23:19,343 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 14:23:19,343 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 14:23:19,343 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 14:23:19,344 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 14:23:19,344 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 14:23:19,344 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 14:23:19,344 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 14:23:19,344 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 14:23:19,344 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 14:23:19,344 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-12-07 14:23:19,344 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 14:23:19,344 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 14:23:19,345 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 14:23:19,345 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_f5f4ba74-290d-4ef9-8a08-839b223015b6/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 [2019-12-07 14:23:19,443 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 14:23:19,450 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 14:23:19,452 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 14:23:19,453 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 14:23:19,454 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 14:23:19,454 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_f5f4ba74-290d-4ef9-8a08-839b223015b6/bin/utaipan/../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength4.c [2019-12-07 14:23:19,499 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f5f4ba74-290d-4ef9-8a08-839b223015b6/bin/utaipan/data/340067e89/0d91199588b044bdb3425409862d92f6/FLAG5f205bf97 [2019-12-07 14:23:19,906 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 14:23:19,907 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_f5f4ba74-290d-4ef9-8a08-839b223015b6/sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength4.c [2019-12-07 14:23:19,910 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f5f4ba74-290d-4ef9-8a08-839b223015b6/bin/utaipan/data/340067e89/0d91199588b044bdb3425409862d92f6/FLAG5f205bf97 [2019-12-07 14:23:19,919 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_f5f4ba74-290d-4ef9-8a08-839b223015b6/bin/utaipan/data/340067e89/0d91199588b044bdb3425409862d92f6 [2019-12-07 14:23:19,921 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 14:23:19,922 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 14:23:19,922 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 14:23:19,922 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 14:23:19,925 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 14:23:19,925 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 02:23:19" (1/1) ... [2019-12-07 14:23:19,927 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@247a03cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:23:19, skipping insertion in model container [2019-12-07 14:23:19,927 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 02:23:19" (1/1) ... [2019-12-07 14:23:19,932 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 14:23:19,942 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 14:23:20,040 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 14:23:20,077 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 14:23:20,089 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 14:23:20,098 INFO L208 MainTranslator]: Completed translation [2019-12-07 14:23:20,098 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:23:20 WrapperNode [2019-12-07 14:23:20,099 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 14:23:20,099 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 14:23:20,099 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 14:23:20,099 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 14:23:20,104 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:23:20" (1/1) ... [2019-12-07 14:23:20,109 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:23:20" (1/1) ... [2019-12-07 14:23:20,122 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 14:23:20,122 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 14:23:20,122 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 14:23:20,122 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 14:23:20,128 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:23:20" (1/1) ... [2019-12-07 14:23:20,128 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:23:20" (1/1) ... [2019-12-07 14:23:20,129 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:23:20" (1/1) ... [2019-12-07 14:23:20,129 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:23:20" (1/1) ... [2019-12-07 14:23:20,132 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:23:20" (1/1) ... [2019-12-07 14:23:20,135 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:23:20" (1/1) ... [2019-12-07 14:23:20,136 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:23:20" (1/1) ... [2019-12-07 14:23:20,137 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 14:23:20,138 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 14:23:20,138 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 14:23:20,138 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 14:23:20,139 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:23:20" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f5f4ba74-290d-4ef9-8a08-839b223015b6/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 14:23:20,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-07 14:23:20,177 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 14:23:20,177 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 14:23:20,177 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-07 14:23:20,177 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 14:23:20,178 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 14:23:20,396 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 14:23:20,396 INFO L287 CfgBuilder]: Removed 9 assume(true) statements. [2019-12-07 14:23:20,397 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 02:23:20 BoogieIcfgContainer [2019-12-07 14:23:20,397 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 14:23:20,397 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 14:23:20,397 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 14:23:20,399 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 14:23:20,399 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 02:23:19" (1/3) ... [2019-12-07 14:23:20,400 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50170ba9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 02:23:20, skipping insertion in model container [2019-12-07 14:23:20,400 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:23:20" (2/3) ... [2019-12-07 14:23:20,400 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50170ba9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 02:23:20, skipping insertion in model container [2019-12-07 14:23:20,400 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 02:23:20" (3/3) ... [2019-12-07 14:23:20,401 INFO L109 eAbstractionObserver]: Analyzing ICFG ArraysOfVariableLength4.c [2019-12-07 14:23:20,407 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 14:23:20,412 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 8 error locations. [2019-12-07 14:23:20,419 INFO L249 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2019-12-07 14:23:20,430 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 14:23:20,430 INFO L374 AbstractCegarLoop]: Hoare is false [2019-12-07 14:23:20,431 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 14:23:20,431 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 14:23:20,431 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 14:23:20,431 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 14:23:20,431 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 14:23:20,431 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 14:23:20,440 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2019-12-07 14:23:20,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-12-07 14:23:20,444 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:23:20,445 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-12-07 14:23:20,445 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2019-12-07 14:23:20,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:23:20,449 INFO L82 PathProgramCache]: Analyzing trace with hash 3118125, now seen corresponding path program 1 times [2019-12-07 14:23:20,454 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 14:23:20,455 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7969372] [2019-12-07 14:23:20,455 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:23:20,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:23:20,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:23:20,546 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7969372] [2019-12-07 14:23:20,547 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 14:23:20,547 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 14:23:20,548 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245626278] [2019-12-07 14:23:20,550 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 14:23:20,551 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 14:23:20,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 14:23:20,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 14:23:20,561 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 3 states. [2019-12-07 14:23:20,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:23:20,596 INFO L93 Difference]: Finished difference Result 37 states and 41 transitions. [2019-12-07 14:23:20,596 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 14:23:20,597 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-12-07 14:23:20,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 14:23:20,605 INFO L225 Difference]: With dead ends: 37 [2019-12-07 14:23:20,606 INFO L226 Difference]: Without dead ends: 35 [2019-12-07 14:23:20,607 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 14:23:20,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-12-07 14:23:20,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 20. [2019-12-07 14:23:20,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-12-07 14:23:20,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2019-12-07 14:23:20,629 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 4 [2019-12-07 14:23:20,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 14:23:20,629 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2019-12-07 14:23:20,629 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 14:23:20,629 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2019-12-07 14:23:20,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-12-07 14:23:20,630 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:23:20,630 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-12-07 14:23:20,630 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2019-12-07 14:23:20,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:23:20,630 INFO L82 PathProgramCache]: Analyzing trace with hash 3048869, now seen corresponding path program 1 times [2019-12-07 14:23:20,630 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 14:23:20,631 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999509740] [2019-12-07 14:23:20,631 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:23:20,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:23:20,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:23:20,653 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999509740] [2019-12-07 14:23:20,653 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 14:23:20,653 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 14:23:20,653 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189539705] [2019-12-07 14:23:20,654 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 14:23:20,654 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 14:23:20,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 14:23:20,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 14:23:20,655 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand 3 states. [2019-12-07 14:23:20,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:23:20,670 INFO L93 Difference]: Finished difference Result 37 states and 43 transitions. [2019-12-07 14:23:20,671 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 14:23:20,671 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-12-07 14:23:20,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 14:23:20,672 INFO L225 Difference]: With dead ends: 37 [2019-12-07 14:23:20,672 INFO L226 Difference]: Without dead ends: 37 [2019-12-07 14:23:20,672 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 14:23:20,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2019-12-07 14:23:20,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 22. [2019-12-07 14:23:20,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-12-07 14:23:20,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2019-12-07 14:23:20,676 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 4 [2019-12-07 14:23:20,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 14:23:20,677 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2019-12-07 14:23:20,677 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 14:23:20,677 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2019-12-07 14:23:20,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-12-07 14:23:20,677 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:23:20,677 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-12-07 14:23:20,678 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2019-12-07 14:23:20,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:23:20,678 INFO L82 PathProgramCache]: Analyzing trace with hash 3050899, now seen corresponding path program 1 times [2019-12-07 14:23:20,678 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 14:23:20,678 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602196984] [2019-12-07 14:23:20,679 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:23:20,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:23:20,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:23:20,709 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602196984] [2019-12-07 14:23:20,709 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 14:23:20,710 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 14:23:20,710 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194988140] [2019-12-07 14:23:20,710 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 14:23:20,710 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 14:23:20,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 14:23:20,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 14:23:20,710 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand 3 states. [2019-12-07 14:23:20,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:23:20,724 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2019-12-07 14:23:20,725 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 14:23:20,725 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-12-07 14:23:20,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 14:23:20,725 INFO L225 Difference]: With dead ends: 25 [2019-12-07 14:23:20,725 INFO L226 Difference]: Without dead ends: 25 [2019-12-07 14:23:20,726 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 14:23:20,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-12-07 14:23:20,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 22. [2019-12-07 14:23:20,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-12-07 14:23:20,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2019-12-07 14:23:20,729 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 4 [2019-12-07 14:23:20,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 14:23:20,729 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2019-12-07 14:23:20,729 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 14:23:20,729 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2019-12-07 14:23:20,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-12-07 14:23:20,730 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:23:20,730 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-12-07 14:23:20,730 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2019-12-07 14:23:20,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:23:20,730 INFO L82 PathProgramCache]: Analyzing trace with hash 94514992, now seen corresponding path program 1 times [2019-12-07 14:23:20,730 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 14:23:20,730 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479237566] [2019-12-07 14:23:20,730 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:23:20,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:23:20,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:23:20,757 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479237566] [2019-12-07 14:23:20,757 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 14:23:20,757 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 14:23:20,757 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303712613] [2019-12-07 14:23:20,757 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 14:23:20,758 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 14:23:20,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 14:23:20,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 14:23:20,758 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand 4 states. [2019-12-07 14:23:20,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:23:20,790 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2019-12-07 14:23:20,790 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 14:23:20,790 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2019-12-07 14:23:20,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 14:23:20,790 INFO L225 Difference]: With dead ends: 21 [2019-12-07 14:23:20,791 INFO L226 Difference]: Without dead ends: 21 [2019-12-07 14:23:20,791 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-07 14:23:20,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-12-07 14:23:20,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2019-12-07 14:23:20,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-12-07 14:23:20,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2019-12-07 14:23:20,794 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 5 [2019-12-07 14:23:20,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 14:23:20,794 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2019-12-07 14:23:20,794 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 14:23:20,794 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2019-12-07 14:23:20,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-12-07 14:23:20,794 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:23:20,795 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-12-07 14:23:20,795 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2019-12-07 14:23:20,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:23:20,795 INFO L82 PathProgramCache]: Analyzing trace with hash 94514993, now seen corresponding path program 1 times [2019-12-07 14:23:20,795 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 14:23:20,795 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369215778] [2019-12-07 14:23:20,796 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:23:20,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:23:20,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:23:20,840 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369215778] [2019-12-07 14:23:20,840 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 14:23:20,840 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 14:23:20,840 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266202390] [2019-12-07 14:23:20,841 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 14:23:20,841 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 14:23:20,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 14:23:20,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-07 14:23:20,841 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand 5 states. [2019-12-07 14:23:20,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:23:20,892 INFO L93 Difference]: Finished difference Result 20 states and 23 transitions. [2019-12-07 14:23:20,892 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 14:23:20,892 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 5 [2019-12-07 14:23:20,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 14:23:20,893 INFO L225 Difference]: With dead ends: 20 [2019-12-07 14:23:20,893 INFO L226 Difference]: Without dead ends: 20 [2019-12-07 14:23:20,893 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-12-07 14:23:20,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-12-07 14:23:20,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2019-12-07 14:23:20,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-12-07 14:23:20,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2019-12-07 14:23:20,895 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 5 [2019-12-07 14:23:20,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 14:23:20,895 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2019-12-07 14:23:20,895 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 14:23:20,895 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2019-12-07 14:23:20,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-12-07 14:23:20,896 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:23:20,896 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2019-12-07 14:23:20,896 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2019-12-07 14:23:20,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:23:20,896 INFO L82 PathProgramCache]: Analyzing trace with hash 634647528, now seen corresponding path program 1 times [2019-12-07 14:23:20,896 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 14:23:20,896 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004179501] [2019-12-07 14:23:20,896 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:23:20,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:23:20,936 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:23:20,937 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004179501] [2019-12-07 14:23:20,937 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1329228734] [2019-12-07 14:23:20,937 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f5f4ba74-290d-4ef9-8a08-839b223015b6/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 14:23:20,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:23:20,964 INFO L264 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 14:23:20,967 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:23:20,984 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:23:20,984 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 14:23:21,001 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:23:21,001 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1538138844] [2019-12-07 14:23:21,016 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2019-12-07 14:23:21,016 INFO L166 IcfgInterpreter]: Building call graph [2019-12-07 14:23:21,020 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-12-07 14:23:21,024 INFO L176 IcfgInterpreter]: Starting interpretation [2019-12-07 14:23:21,025 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-12-07 14:23:21,338 INFO L180 IcfgInterpreter]: Interpretation finished [2019-12-07 14:23:21,674 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2019-12-07 14:23:21,674 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 3, 3] total 12 [2019-12-07 14:23:21,675 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14682239] [2019-12-07 14:23:21,675 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 14:23:21,676 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 14:23:21,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 14:23:21,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2019-12-07 14:23:21,676 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand 5 states. [2019-12-07 14:23:21,808 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 57 [2019-12-07 14:23:21,934 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 56 [2019-12-07 14:23:21,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:23:21,976 INFO L93 Difference]: Finished difference Result 26 states and 30 transitions. [2019-12-07 14:23:21,976 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 14:23:21,976 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2019-12-07 14:23:21,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 14:23:21,976 INFO L225 Difference]: With dead ends: 26 [2019-12-07 14:23:21,976 INFO L226 Difference]: Without dead ends: 26 [2019-12-07 14:23:21,977 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2019-12-07 14:23:21,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-12-07 14:23:21,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2019-12-07 14:23:21,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-12-07 14:23:21,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2019-12-07 14:23:21,979 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 7 [2019-12-07 14:23:21,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 14:23:21,979 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2019-12-07 14:23:21,979 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 14:23:21,980 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2019-12-07 14:23:21,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 14:23:21,980 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:23:21,980 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 14:23:22,180 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 14:23:22,181 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2019-12-07 14:23:22,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:23:22,182 INFO L82 PathProgramCache]: Analyzing trace with hash 400365424, now seen corresponding path program 1 times [2019-12-07 14:23:22,182 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 14:23:22,182 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43658085] [2019-12-07 14:23:22,182 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:23:22,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:23:22,217 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-07 14:23:22,217 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43658085] [2019-12-07 14:23:22,218 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 14:23:22,218 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 14:23:22,218 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493316900] [2019-12-07 14:23:22,219 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 14:23:22,219 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 14:23:22,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 14:23:22,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 14:23:22,220 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand 3 states. [2019-12-07 14:23:22,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:23:22,250 INFO L93 Difference]: Finished difference Result 23 states and 27 transitions. [2019-12-07 14:23:22,250 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 14:23:22,250 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2019-12-07 14:23:22,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 14:23:22,251 INFO L225 Difference]: With dead ends: 23 [2019-12-07 14:23:22,251 INFO L226 Difference]: Without dead ends: 23 [2019-12-07 14:23:22,252 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 14:23:22,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-12-07 14:23:22,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-12-07 14:23:22,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-12-07 14:23:22,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2019-12-07 14:23:22,255 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 10 [2019-12-07 14:23:22,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 14:23:22,256 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2019-12-07 14:23:22,256 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 14:23:22,256 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2019-12-07 14:23:22,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 14:23:22,257 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:23:22,257 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 14:23:22,257 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2019-12-07 14:23:22,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:23:22,258 INFO L82 PathProgramCache]: Analyzing trace with hash 400365425, now seen corresponding path program 1 times [2019-12-07 14:23:22,258 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 14:23:22,258 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149181806] [2019-12-07 14:23:22,258 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:23:22,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:23:22,297 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-07 14:23:22,298 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149181806] [2019-12-07 14:23:22,298 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [539865496] [2019-12-07 14:23:22,298 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f5f4ba74-290d-4ef9-8a08-839b223015b6/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 14:23:22,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:23:22,354 INFO L264 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 14:23:22,355 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:23:22,381 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:23:22,381 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 14:23:22,396 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:23:22,397 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [142932738] [2019-12-07 14:23:22,398 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2019-12-07 14:23:22,398 INFO L166 IcfgInterpreter]: Building call graph [2019-12-07 14:23:22,398 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-12-07 14:23:22,398 INFO L176 IcfgInterpreter]: Starting interpretation [2019-12-07 14:23:22,399 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-12-07 14:23:22,434 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 14:23:22,546 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 14:23:22,553 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 14:23:22,796 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 14:23:23,049 INFO L180 IcfgInterpreter]: Interpretation finished [2019-12-07 14:23:23,294 WARN L192 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 87 [2019-12-07 14:23:23,622 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2019-12-07 14:23:23,622 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [3, 4, 4] total 13 [2019-12-07 14:23:23,622 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92677376] [2019-12-07 14:23:23,623 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-12-07 14:23:23,623 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 14:23:23,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-12-07 14:23:23,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2019-12-07 14:23:23,623 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand 7 states. [2019-12-07 14:23:24,191 WARN L192 SmtUtils]: Spent 509.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 86 [2019-12-07 14:23:24,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:23:24,347 INFO L93 Difference]: Finished difference Result 24 states and 29 transitions. [2019-12-07 14:23:24,348 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-12-07 14:23:24,348 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 10 [2019-12-07 14:23:24,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 14:23:24,349 INFO L225 Difference]: With dead ends: 24 [2019-12-07 14:23:24,349 INFO L226 Difference]: Without dead ends: 24 [2019-12-07 14:23:24,350 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 17 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2019-12-07 14:23:24,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-12-07 14:23:24,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2019-12-07 14:23:24,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-12-07 14:23:24,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2019-12-07 14:23:24,355 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 10 [2019-12-07 14:23:24,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 14:23:24,355 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2019-12-07 14:23:24,355 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-12-07 14:23:24,356 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2019-12-07 14:23:24,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-12-07 14:23:24,357 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:23:24,357 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 14:23:24,557 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 14:23:24,558 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2019-12-07 14:23:24,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:23:24,559 INFO L82 PathProgramCache]: Analyzing trace with hash -1795882651, now seen corresponding path program 1 times [2019-12-07 14:23:24,559 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 14:23:24,559 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197708173] [2019-12-07 14:23:24,559 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:23:24,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:23:24,594 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-07 14:23:24,595 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197708173] [2019-12-07 14:23:24,595 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1642055156] [2019-12-07 14:23:24,595 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f5f4ba74-290d-4ef9-8a08-839b223015b6/bin/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 14:23:24,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:23:24,626 INFO L264 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 14:23:24,626 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:23:24,640 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:23:24,640 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 14:23:24,652 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:23:24,653 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [160034779] [2019-12-07 14:23:24,654 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2019-12-07 14:23:24,654 INFO L166 IcfgInterpreter]: Building call graph [2019-12-07 14:23:24,654 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-12-07 14:23:24,654 INFO L176 IcfgInterpreter]: Starting interpretation [2019-12-07 14:23:24,654 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-12-07 14:23:24,685 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 14:23:24,753 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 14:23:24,757 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 14:23:25,046 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 14:23:25,067 INFO L180 IcfgInterpreter]: Interpretation finished [2019-12-07 14:23:25,316 WARN L192 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 87 [2019-12-07 14:23:25,844 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 14:23:25,844 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-12-07 14:23:25,845 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 4] total 8 [2019-12-07 14:23:25,845 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707920288] [2019-12-07 14:23:25,845 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-12-07 14:23:25,845 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 14:23:25,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-12-07 14:23:25,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2019-12-07 14:23:25,845 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand 8 states. [2019-12-07 14:23:25,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:23:25,969 INFO L93 Difference]: Finished difference Result 65 states and 70 transitions. [2019-12-07 14:23:25,969 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-12-07 14:23:25,969 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2019-12-07 14:23:25,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 14:23:25,969 INFO L225 Difference]: With dead ends: 65 [2019-12-07 14:23:25,969 INFO L226 Difference]: Without dead ends: 65 [2019-12-07 14:23:25,970 INFO L630 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 [2019-12-07 14:23:25,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2019-12-07 14:23:25,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 43. [2019-12-07 14:23:25,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2019-12-07 14:23:25,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 48 transitions. [2019-12-07 14:23:25,973 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 48 transitions. Word has length 12 [2019-12-07 14:23:25,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 14:23:25,973 INFO L462 AbstractCegarLoop]: Abstraction has 43 states and 48 transitions. [2019-12-07 14:23:25,973 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-12-07 14:23:25,973 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions. [2019-12-07 14:23:25,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-12-07 14:23:25,973 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:23:25,974 INFO L410 BasicCegarLoop]: trace histogram [8, 8, 8, 2, 2, 1, 1, 1] [2019-12-07 14:23:26,174 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 14:23:26,175 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2019-12-07 14:23:26,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:23:26,175 INFO L82 PathProgramCache]: Analyzing trace with hash -982673158, now seen corresponding path program 1 times [2019-12-07 14:23:26,175 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 14:23:26,175 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071785489] [2019-12-07 14:23:26,176 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:23:26,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:23:26,228 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 58 proven. 22 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2019-12-07 14:23:26,228 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071785489] [2019-12-07 14:23:26,228 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2115012653] [2019-12-07 14:23:26,228 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f5f4ba74-290d-4ef9-8a08-839b223015b6/bin/utaipan/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 14:23:26,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:23:26,267 INFO L264 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 8 conjunts are in the unsatisfiable core [2019-12-07 14:23:26,268 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:23:26,316 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 58 proven. 22 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2019-12-07 14:23:26,316 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 14:23:26,372 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 58 proven. 22 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2019-12-07 14:23:26,372 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1439213517] [2019-12-07 14:23:26,373 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2019-12-07 14:23:26,373 INFO L166 IcfgInterpreter]: Building call graph [2019-12-07 14:23:26,373 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-12-07 14:23:26,373 INFO L176 IcfgInterpreter]: Starting interpretation [2019-12-07 14:23:26,373 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-12-07 14:23:26,395 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 14:23:26,454 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 14:23:26,458 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 14:23:26,743 INFO L180 IcfgInterpreter]: Interpretation finished [2019-12-07 14:23:27,078 WARN L192 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 87 [2019-12-07 14:23:27,517 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 14:23:27,517 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-12-07 14:23:27,517 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2019-12-07 14:23:27,517 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457159029] [2019-12-07 14:23:27,518 INFO L442 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-12-07 14:23:27,518 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 14:23:27,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-12-07 14:23:27,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=321, Unknown=0, NotChecked=0, Total=462 [2019-12-07 14:23:27,518 INFO L87 Difference]: Start difference. First operand 43 states and 48 transitions. Second operand 17 states. [2019-12-07 14:23:27,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:23:27,558 INFO L93 Difference]: Finished difference Result 79 states and 84 transitions. [2019-12-07 14:23:27,558 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-12-07 14:23:27,559 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 31 [2019-12-07 14:23:27,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 14:23:27,559 INFO L225 Difference]: With dead ends: 79 [2019-12-07 14:23:27,559 INFO L226 Difference]: Without dead ends: 79 [2019-12-07 14:23:27,560 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 70 SyntacticMatches, 8 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=141, Invalid=321, Unknown=0, NotChecked=0, Total=462 [2019-12-07 14:23:27,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2019-12-07 14:23:27,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2019-12-07 14:23:27,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2019-12-07 14:23:27,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 84 transitions. [2019-12-07 14:23:27,564 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 84 transitions. Word has length 31 [2019-12-07 14:23:27,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 14:23:27,564 INFO L462 AbstractCegarLoop]: Abstraction has 79 states and 84 transitions. [2019-12-07 14:23:27,564 INFO L463 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-12-07 14:23:27,564 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 84 transitions. [2019-12-07 14:23:27,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2019-12-07 14:23:27,565 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:23:27,566 INFO L410 BasicCegarLoop]: trace histogram [20, 20, 20, 2, 2, 1, 1, 1] [2019-12-07 14:23:27,766 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 14:23:27,766 INFO L410 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2019-12-07 14:23:27,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:23:27,767 INFO L82 PathProgramCache]: Analyzing trace with hash -2066593926, now seen corresponding path program 2 times [2019-12-07 14:23:27,767 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 14:23:27,767 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432534071] [2019-12-07 14:23:27,767 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:23:27,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:23:27,888 INFO L134 CoverageAnalysis]: Checked inductivity of 613 backedges. 322 proven. 145 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2019-12-07 14:23:27,888 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432534071] [2019-12-07 14:23:27,888 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [890917867] [2019-12-07 14:23:27,888 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f5f4ba74-290d-4ef9-8a08-839b223015b6/bin/utaipan/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 14:23:27,917 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-12-07 14:23:27,917 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 14:23:27,918 INFO L264 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 9 conjunts are in the unsatisfiable core [2019-12-07 14:23:27,920 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:23:28,034 INFO L134 CoverageAnalysis]: Checked inductivity of 613 backedges. 323 proven. 0 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2019-12-07 14:23:28,035 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 14:23:28,107 INFO L134 CoverageAnalysis]: Checked inductivity of 613 backedges. 0 proven. 323 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2019-12-07 14:23:28,108 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-12-07 14:23:28,108 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [13, 3] total 19 [2019-12-07 14:23:28,108 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904067873] [2019-12-07 14:23:28,108 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 14:23:28,108 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 14:23:28,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 14:23:28,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=241, Unknown=0, NotChecked=0, Total=342 [2019-12-07 14:23:28,109 INFO L87 Difference]: Start difference. First operand 79 states and 84 transitions. Second operand 5 states. [2019-12-07 14:23:28,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:23:28,138 INFO L93 Difference]: Finished difference Result 77 states and 82 transitions. [2019-12-07 14:23:28,138 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 14:23:28,138 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 67 [2019-12-07 14:23:28,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 14:23:28,139 INFO L225 Difference]: With dead ends: 77 [2019-12-07 14:23:28,139 INFO L226 Difference]: Without dead ends: 77 [2019-12-07 14:23:28,139 INFO L630 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 [2019-12-07 14:23:28,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2019-12-07 14:23:28,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2019-12-07 14:23:28,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2019-12-07 14:23:28,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 82 transitions. [2019-12-07 14:23:28,143 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 82 transitions. Word has length 67 [2019-12-07 14:23:28,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 14:23:28,143 INFO L462 AbstractCegarLoop]: Abstraction has 77 states and 82 transitions. [2019-12-07 14:23:28,143 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 14:23:28,143 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 82 transitions. [2019-12-07 14:23:28,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2019-12-07 14:23:28,144 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:23:28,144 INFO L410 BasicCegarLoop]: trace histogram [20, 20, 20, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2019-12-07 14:23:28,345 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 14:23:28,345 INFO L410 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2019-12-07 14:23:28,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:23:28,346 INFO L82 PathProgramCache]: Analyzing trace with hash -162298974, now seen corresponding path program 2 times [2019-12-07 14:23:28,346 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 14:23:28,346 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016858011] [2019-12-07 14:23:28,346 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:23:28,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:23:28,416 INFO L134 CoverageAnalysis]: Checked inductivity of 615 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2019-12-07 14:23:28,416 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016858011] [2019-12-07 14:23:28,416 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2042799098] [2019-12-07 14:23:28,416 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f5f4ba74-290d-4ef9-8a08-839b223015b6/bin/utaipan/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 14:23:28,440 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2019-12-07 14:23:28,440 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 14:23:28,440 INFO L264 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 8 conjunts are in the unsatisfiable core [2019-12-07 14:23:28,443 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:23:28,502 INFO L134 CoverageAnalysis]: Checked inductivity of 615 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 615 trivial. 0 not checked. [2019-12-07 14:23:28,502 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 14:23:28,529 INFO L134 CoverageAnalysis]: Checked inductivity of 615 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 615 trivial. 0 not checked. [2019-12-07 14:23:28,529 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-12-07 14:23:28,529 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [4] total 8 [2019-12-07 14:23:28,530 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751516019] [2019-12-07 14:23:28,530 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 14:23:28,530 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 14:23:28,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 14:23:28,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2019-12-07 14:23:28,530 INFO L87 Difference]: Start difference. First operand 77 states and 82 transitions. Second operand 6 states. [2019-12-07 14:23:28,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:23:28,552 INFO L93 Difference]: Finished difference Result 76 states and 81 transitions. [2019-12-07 14:23:28,552 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 14:23:28,552 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 72 [2019-12-07 14:23:28,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 14:23:28,553 INFO L225 Difference]: With dead ends: 76 [2019-12-07 14:23:28,553 INFO L226 Difference]: Without dead ends: 0 [2019-12-07 14:23:28,553 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2019-12-07 14:23:28,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-07 14:23:28,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-07 14:23:28,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-07 14:23:28,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-07 14:23:28,553 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 72 [2019-12-07 14:23:28,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 14:23:28,553 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 14:23:28,553 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 14:23:28,553 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-07 14:23:28,553 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-07 14:23:28,754 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 14:23:28,761 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 02:23:28 BoogieIcfgContainer [2019-12-07 14:23:28,761 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 14:23:28,762 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 14:23:28,762 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 14:23:28,763 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 14:23:28,763 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 02:23:20" (3/4) ... [2019-12-07 14:23:28,768 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-12-07 14:23:28,782 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2019-12-07 14:23:28,782 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2019-12-07 14:23:28,782 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-12-07 14:23:28,818 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_f5f4ba74-290d-4ef9-8a08-839b223015b6/bin/utaipan/witness.graphml [2019-12-07 14:23:28,818 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 14:23:28,819 INFO L168 Benchmark]: Toolchain (without parser) took 8897.52 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 254.8 MB). Free memory was 943.5 MB in the beginning and 1.1 GB in the end (delta: -167.4 MB). Peak memory consumption was 87.5 MB. Max. memory is 11.5 GB. [2019-12-07 14:23:28,819 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 958.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 14:23:28,819 INFO L168 Benchmark]: CACSL2BoogieTranslator took 176.51 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.0 MB). Free memory was 943.5 MB in the beginning and 1.1 GB in the end (delta: -180.2 MB). Peak memory consumption was 24.2 MB. Max. memory is 11.5 GB. [2019-12-07 14:23:28,820 INFO L168 Benchmark]: Boogie Procedure Inliner took 22.75 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 14:23:28,820 INFO L168 Benchmark]: Boogie Preprocessor took 15.64 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 14:23:28,820 INFO L168 Benchmark]: RCFGBuilder took 258.67 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 27.2 MB). Peak memory consumption was 27.2 MB. Max. memory is 11.5 GB. [2019-12-07 14:23:28,820 INFO L168 Benchmark]: TraceAbstraction took 8364.32 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 125.8 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -30.6 MB). Peak memory consumption was 95.2 MB. Max. memory is 11.5 GB. [2019-12-07 14:23:28,820 INFO L168 Benchmark]: Witness Printer took 56.03 ms. Allocated memory is still 1.3 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 11.5 GB. [2019-12-07 14:23:28,822 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 958.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 176.51 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.0 MB). Free memory was 943.5 MB in the beginning and 1.1 GB in the end (delta: -180.2 MB). Peak memory consumption was 24.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 22.75 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 15.64 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 258.67 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 27.2 MB). Peak memory consumption was 27.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 8364.32 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 125.8 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -30.6 MB). Peak memory consumption was 95.2 MB. Max. memory is 11.5 GB. * Witness Printer took 56.03 ms. Allocated memory is still 1.3 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 16]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 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. Result: SAFE, OverallTime: 8.3s, OverallIterations: 12, TraceHistogramMax: 20, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 128 SDtfs, 216 SDslu, 151 SDs, 0 SdLazy, 344 SolverSat, 57 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 509 GetRequests, 391 SyntacticMatches, 15 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 541 ImplicationChecksByTransitivity, 3.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=79occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 12 MinimizatonAttempts, 58 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 430 NumberOfCodeBlocks, 307 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 605 ConstructedInterpolants, 67 QuantifiedInterpolants, 414584 SizeOfPredicates, 11 NumberOfNonLiveVariables, 478 ConjunctsInSsa, 40 ConjunctsInUnsatCore, 24 InterpolantComputations, 9 PerfectInterpolantSequences, 3143/4013 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: OVERALL_TIME[ms]: 974, ICFG_INTERPRETER_ENTERED_PROCEDURES: 2, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 18, DAG_INTERPRETER_EARLY_EXITS: 0, TOOLS_POST_APPLICATIONS: 59, TOOLS_POST_TIME[ms]: 419, 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: 57, TOOLS_QUANTIFIERELIM_TIME[ms]: 405, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 70, FLUID_QUERY_TIME[ms]: 4, FLUID_QUERIES: 102, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 8, DOMAIN_JOIN_TIME[ms]: 225, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME[ms]: 0, DOMAIN_WIDEN_APPLICATIONS: 7, DOMAIN_WIDEN_TIME[ms]: 243, DOMAIN_ISSUBSETEQ_APPLICATIONS: 9, DOMAIN_ISSUBSETEQ_TIME[ms]: 21, DOMAIN_ISBOTTOM_APPLICATIONS: 18, DOMAIN_ISBOTTOM_TIME[ms]: 24, LOOP_SUMMARIZER_APPLICATIONS: 2, LOOP_SUMMARIZER_CACHE_MISSES: 2, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 780, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 780, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 9, CALL_SUMMARIZER_APPLICATIONS: 0, CALL_SUMMARIZER_CACHE_MISSES: 0, CALL_SUMMARIZER_OVERALL_TIME[ms]: 0, CALL_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 0, PROCEDURE_GRAPH_BUILDER_TIME[ms]: 2, PATH_EXPR_TIME[ms]: 2, REGEX_TO_DAG_TIME[ms]: 2, DAG_COMPRESSION_TIME[ms]: 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...