./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety-ext3/scopes3.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c78391-ea1a-4ba5-aef2-26abf2d67104/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c78391-ea1a-4ba5-aef2-26abf2d67104/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c78391-ea1a-4ba5-aef2-26abf2d67104/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c78391-ea1a-4ba5-aef2-26abf2d67104/bin/utaipan-WLngWcDbfI/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-ext3/scopes3.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c78391-ea1a-4ba5-aef2-26abf2d67104/bin/utaipan-WLngWcDbfI/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c78391-ea1a-4ba5-aef2-26abf2d67104/bin/utaipan-WLngWcDbfI --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 7efcb16e512d7de15a71f6cd895dcd8493c4b646 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref) --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:27:19,293 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:27:19,295 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:27:19,324 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:27:19,325 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:27:19,326 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:27:19,328 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:27:19,331 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:27:19,333 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:27:19,334 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:27:19,335 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:27:19,337 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:27:19,337 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:27:19,339 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:27:19,340 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:27:19,341 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:27:19,342 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:27:19,343 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:27:19,345 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:27:19,347 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:27:19,349 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:27:19,351 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:27:19,352 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:27:19,353 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:27:19,356 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:27:19,357 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:27:19,357 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:27:19,358 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:27:19,359 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:27:19,360 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:27:19,361 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:27:19,362 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:27:19,363 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:27:19,364 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:27:19,365 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:27:19,365 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:27:19,366 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:27:19,367 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:27:19,367 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:27:19,368 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:27:19,369 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:27:19,370 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c78391-ea1a-4ba5-aef2-26abf2d67104/bin/utaipan-WLngWcDbfI/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-10-11 02:27:19,394 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:27:19,394 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:27:19,395 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:27:19,395 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:27:19,395 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:27:19,395 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:27:19,396 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:27:19,396 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:27:19,396 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:27:19,396 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:27:19,396 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:27:19,397 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:27:19,397 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:27:19,397 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:27:19,397 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:27:19,398 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-11 02:27:19,398 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-11 02:27:19,399 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:27:19,399 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:27:19,399 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-11 02:27:19,399 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:27:19,400 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:27:19,400 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:27:19,400 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-11 02:27:19,400 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-11 02:27:19,400 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-11 02:27:19,401 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:27:19,401 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:27:19,401 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:27:19,401 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:27:19,402 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:27:19,402 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:27:19,402 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:27:19,402 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:27:19,402 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:27:19,403 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:27:19,403 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:27:19,403 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:27:19,403 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:27:19,403 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c78391-ea1a-4ba5-aef2-26abf2d67104/bin/utaipan-WLngWcDbfI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c78391-ea1a-4ba5-aef2-26abf2d67104/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7efcb16e512d7de15a71f6cd895dcd8493c4b646 [2021-10-11 02:27:19,707 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:27:19,736 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:27:19,738 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:27:19,739 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:27:19,741 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:27:19,742 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c78391-ea1a-4ba5-aef2-26abf2d67104/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/memsafety-ext3/scopes3.c [2021-10-11 02:27:19,842 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c78391-ea1a-4ba5-aef2-26abf2d67104/bin/utaipan-WLngWcDbfI/data/4dd09bab5/1ab156adf91346a294aefdeaca21991d/FLAGa5ae74f1d [2021-10-11 02:27:20,225 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:27:20,225 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c78391-ea1a-4ba5-aef2-26abf2d67104/sv-benchmarks/c/memsafety-ext3/scopes3.c [2021-10-11 02:27:20,233 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c78391-ea1a-4ba5-aef2-26abf2d67104/bin/utaipan-WLngWcDbfI/data/4dd09bab5/1ab156adf91346a294aefdeaca21991d/FLAGa5ae74f1d [2021-10-11 02:27:20,641 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c78391-ea1a-4ba5-aef2-26abf2d67104/bin/utaipan-WLngWcDbfI/data/4dd09bab5/1ab156adf91346a294aefdeaca21991d [2021-10-11 02:27:20,644 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:27:20,646 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:27:20,650 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:27:20,651 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:27:20,653 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:27:20,654 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:27:20" (1/1) ... [2021-10-11 02:27:20,655 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@638c4db0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:20, skipping insertion in model container [2021-10-11 02:27:20,656 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:27:20" (1/1) ... [2021-10-11 02:27:20,663 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:27:20,670 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:27:20,826 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:27:20,839 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:27:20,851 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:27:20,862 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:27:20,863 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:20 WrapperNode [2021-10-11 02:27:20,863 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:27:20,864 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:27:20,864 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:27:20,864 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:27:20,870 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:20" (1/1) ... [2021-10-11 02:27:20,876 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:20" (1/1) ... [2021-10-11 02:27:20,890 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:27:20,890 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:27:20,891 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:27:20,891 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:27:20,899 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:20" (1/1) ... [2021-10-11 02:27:20,899 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:20" (1/1) ... [2021-10-11 02:27:20,901 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:20" (1/1) ... [2021-10-11 02:27:20,901 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:20" (1/1) ... [2021-10-11 02:27:20,905 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:20" (1/1) ... [2021-10-11 02:27:20,908 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:20" (1/1) ... [2021-10-11 02:27:20,909 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:20" (1/1) ... [2021-10-11 02:27:20,911 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:27:20,912 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:27:20,912 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:27:20,912 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:27:20,916 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:20" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c78391-ea1a-4ba5-aef2-26abf2d67104/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:27:20,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-11 02:27:20,993 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:27:20,994 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:27:20,994 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:27:20,994 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-11 02:27:21,203 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:27:21,203 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-11 02:27:21,205 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:27:21 BoogieIcfgContainer [2021-10-11 02:27:21,205 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:27:21,207 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:27:21,207 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:27:21,211 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:27:21,211 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:27:20" (1/3) ... [2021-10-11 02:27:21,212 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@91dbf24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:27:21, skipping insertion in model container [2021-10-11 02:27:21,212 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:20" (2/3) ... [2021-10-11 02:27:21,212 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@91dbf24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:27:21, skipping insertion in model container [2021-10-11 02:27:21,213 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:27:21" (3/3) ... [2021-10-11 02:27:21,214 INFO L111 eAbstractionObserver]: Analyzing ICFG scopes3.c [2021-10-11 02:27:21,228 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:27:21,231 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2021-10-11 02:27:21,243 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-10-11 02:27:21,264 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:27:21,264 INFO L378 AbstractCegarLoop]: Hoare is false [2021-10-11 02:27:21,265 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:27:21,265 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:27:21,265 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:27:21,265 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:27:21,265 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:27:21,265 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:27:21,278 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2021-10-11 02:27:21,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-11 02:27:21,284 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:21,284 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-11 02:27:21,285 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-10-11 02:27:21,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:21,291 INFO L82 PathProgramCache]: Analyzing trace with hash 56060, now seen corresponding path program 1 times [2021-10-11 02:27:21,300 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:27:21,301 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267970648] [2021-10-11 02:27:21,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:27:21,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:21,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:21,504 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267970648] [2021-10-11 02:27:21,505 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:27:21,507 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:27:21,508 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485740977] [2021-10-11 02:27:21,514 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:27:21,515 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:27:21,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:27:21,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:27:21,544 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 3 states. [2021-10-11 02:27:21,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:21,616 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2021-10-11 02:27:21,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:27:21,618 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2021-10-11 02:27:21,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:21,626 INFO L225 Difference]: With dead ends: 10 [2021-10-11 02:27:21,626 INFO L226 Difference]: Without dead ends: 9 [2021-10-11 02:27:21,628 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:27:21,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-10-11 02:27:21,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-10-11 02:27:21,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-10-11 02:27:21,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2021-10-11 02:27:21,658 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 3 [2021-10-11 02:27:21,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:21,658 INFO L481 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2021-10-11 02:27:21,658 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:27:21,659 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2021-10-11 02:27:21,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-11 02:27:21,659 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:21,659 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-11 02:27:21,660 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:27:21,660 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-10-11 02:27:21,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:21,661 INFO L82 PathProgramCache]: Analyzing trace with hash 56061, now seen corresponding path program 1 times [2021-10-11 02:27:21,662 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:27:21,662 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177932263] [2021-10-11 02:27:21,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:27:21,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:21,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:21,721 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177932263] [2021-10-11 02:27:21,722 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:27:21,722 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:27:21,722 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318695979] [2021-10-11 02:27:21,723 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:27:21,724 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:27:21,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:27:21,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:27:21,725 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 3 states. [2021-10-11 02:27:21,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:21,765 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2021-10-11 02:27:21,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:27:21,766 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2021-10-11 02:27:21,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:21,767 INFO L225 Difference]: With dead ends: 13 [2021-10-11 02:27:21,768 INFO L226 Difference]: Without dead ends: 13 [2021-10-11 02:27:21,768 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:27:21,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-10-11 02:27:21,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 10. [2021-10-11 02:27:21,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-10-11 02:27:21,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2021-10-11 02:27:21,774 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 12 transitions. Word has length 3 [2021-10-11 02:27:21,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:21,775 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 12 transitions. [2021-10-11 02:27:21,776 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:27:21,776 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 12 transitions. [2021-10-11 02:27:21,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-11 02:27:21,777 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:21,777 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-11 02:27:21,778 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:27:21,778 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-10-11 02:27:21,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:21,779 INFO L82 PathProgramCache]: Analyzing trace with hash 56719, now seen corresponding path program 1 times [2021-10-11 02:27:21,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:27:21,781 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411771597] [2021-10-11 02:27:21,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:27:21,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:21,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:21,827 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411771597] [2021-10-11 02:27:21,827 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:27:21,827 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:27:21,827 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810582239] [2021-10-11 02:27:21,829 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:27:21,829 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:27:21,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:27:21,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:27:21,836 INFO L87 Difference]: Start difference. First operand 10 states and 12 transitions. Second operand 3 states. [2021-10-11 02:27:21,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:21,850 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2021-10-11 02:27:21,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:27:21,859 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2021-10-11 02:27:21,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:21,860 INFO L225 Difference]: With dead ends: 9 [2021-10-11 02:27:21,860 INFO L226 Difference]: Without dead ends: 9 [2021-10-11 02:27:21,862 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:27:21,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-10-11 02:27:21,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8. [2021-10-11 02:27:21,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-10-11 02:27:21,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2021-10-11 02:27:21,866 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 3 [2021-10-11 02:27:21,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:21,866 INFO L481 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2021-10-11 02:27:21,866 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:27:21,866 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2021-10-11 02:27:21,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-11 02:27:21,867 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:21,867 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-11 02:27:21,867 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 02:27:21,867 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-10-11 02:27:21,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:21,868 INFO L82 PathProgramCache]: Analyzing trace with hash 53890017, now seen corresponding path program 1 times [2021-10-11 02:27:21,869 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:27:21,869 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373999] [2021-10-11 02:27:21,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:27:21,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:21,915 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:21,915 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373999] [2021-10-11 02:27:21,916 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [826830154] [2021-10-11 02:27:21,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c78391-ea1a-4ba5-aef2-26abf2d67104/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:27:21,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:21,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 02:27:21,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:27:22,005 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:22,006 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:27:22,031 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:22,032 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1682069495] [2021-10-11 02:27:22,052 INFO L159 IcfgInterpreter]: Started Sifa with 5 locations of interest [2021-10-11 02:27:22,053 INFO L166 IcfgInterpreter]: Building call graph [2021-10-11 02:27:22,057 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-11 02:27:22,063 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-11 02:27:22,064 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-11 02:27:22,865 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-11 02:27:22,914 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:27:22,914 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-11 02:27:22,914 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2021-10-11 02:27:22,914 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540656417] [2021-10-11 02:27:22,915 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-10-11 02:27:22,915 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:27:22,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-11 02:27:22,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-10-11 02:27:22,916 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 7 states. [2021-10-11 02:27:22,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:22,950 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2021-10-11 02:27:22,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 02:27:22,951 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 5 [2021-10-11 02:27:22,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:22,953 INFO L225 Difference]: With dead ends: 14 [2021-10-11 02:27:22,954 INFO L226 Difference]: Without dead ends: 14 [2021-10-11 02:27:22,956 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-10-11 02:27:22,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-10-11 02:27:22,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-10-11 02:27:22,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-10-11 02:27:22,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2021-10-11 02:27:22,963 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 5 [2021-10-11 02:27:22,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:22,964 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2021-10-11 02:27:22,964 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-10-11 02:27:22,964 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2021-10-11 02:27:22,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-11 02:27:22,965 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:22,965 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1] [2021-10-11 02:27:23,180 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2021-10-11 02:27:23,180 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-10-11 02:27:23,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:23,181 INFO L82 PathProgramCache]: Analyzing trace with hash 1757760471, now seen corresponding path program 2 times [2021-10-11 02:27:23,181 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:27:23,181 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224644957] [2021-10-11 02:27:23,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:27:23,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:23,252 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:23,252 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224644957] [2021-10-11 02:27:23,252 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1894280294] [2021-10-11 02:27:23,252 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c78391-ea1a-4ba5-aef2-26abf2d67104/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:27:23,299 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-10-11 02:27:23,300 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-11 02:27:23,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-11 02:27:23,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:27:23,335 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:23,335 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:27:23,417 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:23,417 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1472794912] [2021-10-11 02:27:23,419 INFO L159 IcfgInterpreter]: Started Sifa with 5 locations of interest [2021-10-11 02:27:23,420 INFO L166 IcfgInterpreter]: Building call graph [2021-10-11 02:27:23,420 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-11 02:27:23,420 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-11 02:27:23,421 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-11 02:27:23,709 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-11 02:27:23,759 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:27:23,759 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-11 02:27:23,759 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2021-10-11 02:27:23,760 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990803707] [2021-10-11 02:27:23,760 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-10-11 02:27:23,761 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:27:23,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-11 02:27:23,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=154, Unknown=0, NotChecked=0, Total=240 [2021-10-11 02:27:23,762 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 13 states. [2021-10-11 02:27:23,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:23,828 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2021-10-11 02:27:23,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-11 02:27:23,829 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 11 [2021-10-11 02:27:23,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:23,829 INFO L225 Difference]: With dead ends: 26 [2021-10-11 02:27:23,830 INFO L226 Difference]: Without dead ends: 26 [2021-10-11 02:27:23,830 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=154, Unknown=0, NotChecked=0, Total=240 [2021-10-11 02:27:23,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-10-11 02:27:23,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2021-10-11 02:27:23,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2021-10-11 02:27:23,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2021-10-11 02:27:23,834 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 11 [2021-10-11 02:27:23,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:23,834 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2021-10-11 02:27:23,835 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-10-11 02:27:23,835 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2021-10-11 02:27:23,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-11 02:27:23,836 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:23,836 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 1, 1, 1] [2021-10-11 02:27:24,064 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-10-11 02:27:24,064 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-10-11 02:27:24,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:24,065 INFO L82 PathProgramCache]: Analyzing trace with hash 1275509315, now seen corresponding path program 3 times [2021-10-11 02:27:24,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:27:24,065 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077938803] [2021-10-11 02:27:24,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:27:24,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:27:24,150 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:27:24,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:27:24,203 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:27:24,228 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-11 02:27:24,229 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-10-11 02:27:24,229 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-10-11 02:27:24,256 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:27:24 BoogieIcfgContainer [2021-10-11 02:27:24,256 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:27:24,256 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:27:24,257 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:27:24,257 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:27:24,257 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:27:21" (3/4) ... [2021-10-11 02:27:24,263 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-11 02:27:24,320 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c78391-ea1a-4ba5-aef2-26abf2d67104/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:27:24,321 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:27:24,322 INFO L168 Benchmark]: Toolchain (without parser) took 3675.94 ms. Allocated memory was 111.1 MB in the beginning and 134.2 MB in the end (delta: 23.1 MB). Free memory was 72.5 MB in the beginning and 48.7 MB in the end (delta: 23.7 MB). Peak memory consumption was 46.6 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:24,322 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 111.1 MB. Free memory was 88.7 MB in the beginning and 88.6 MB in the end (delta: 62.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:27:24,323 INFO L168 Benchmark]: CACSL2BoogieTranslator took 212.82 ms. Allocated memory is still 111.1 MB. Free memory was 72.3 MB in the beginning and 85.3 MB in the end (delta: -13.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:24,323 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.04 ms. Allocated memory is still 111.1 MB. Free memory was 85.3 MB in the beginning and 84.2 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:24,325 INFO L168 Benchmark]: Boogie Preprocessor took 20.58 ms. Allocated memory is still 111.1 MB. Free memory was 84.2 MB in the beginning and 82.9 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:27:24,328 INFO L168 Benchmark]: RCFGBuilder took 293.66 ms. Allocated memory is still 111.1 MB. Free memory was 82.9 MB in the beginning and 69.8 MB in the end (delta: 13.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:24,329 INFO L168 Benchmark]: TraceAbstraction took 3048.95 ms. Allocated memory was 111.1 MB in the beginning and 134.2 MB in the end (delta: 23.1 MB). Free memory was 69.2 MB in the beginning and 50.8 MB in the end (delta: 18.3 MB). Peak memory consumption was 43.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:24,331 INFO L168 Benchmark]: Witness Printer took 64.61 ms. Allocated memory is still 134.2 MB. Free memory was 50.8 MB in the beginning and 48.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:24,333 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 111.1 MB. Free memory was 88.7 MB in the beginning and 88.6 MB in the end (delta: 62.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 212.82 ms. Allocated memory is still 111.1 MB. Free memory was 72.3 MB in the beginning and 85.3 MB in the end (delta: -13.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 26.04 ms. Allocated memory is still 111.1 MB. Free memory was 85.3 MB in the beginning and 84.2 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 20.58 ms. Allocated memory is still 111.1 MB. Free memory was 84.2 MB in the beginning and 82.9 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 293.66 ms. Allocated memory is still 111.1 MB. Free memory was 82.9 MB in the beginning and 69.8 MB in the end (delta: 13.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3048.95 ms. Allocated memory was 111.1 MB in the beginning and 134.2 MB in the end (delta: 23.1 MB). Free memory was 69.2 MB in the beginning and 50.8 MB in the end (delta: 18.3 MB). Peak memory consumption was 43.1 MB. Max. memory is 16.1 GB. * Witness Printer took 64.61 ms. Allocated memory is still 134.2 MB. Free memory was 50.8 MB in the beginning and 48.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 8]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L2] int* p; [L3] int i = 0; [L3] COND TRUE i < 10 [L4] int a[10]; [L5] p = a [L6] p[0] = 1 [L3] i++ [L3] COND TRUE i < 10 [L4] int a[10]; [L5] p = a [L6] p[0] = 1 [L3] i++ [L3] COND TRUE i < 10 [L4] int a[10]; [L5] p = a [L6] p[0] = 1 [L3] i++ [L3] COND TRUE i < 10 [L4] int a[10]; [L5] p = a [L6] p[0] = 1 [L3] i++ [L3] COND TRUE i < 10 [L4] int a[10]; [L5] p = a [L6] p[0] = 1 [L3] i++ [L3] COND TRUE i < 10 [L4] int a[10]; [L5] p = a [L6] p[0] = 1 [L3] i++ [L3] COND TRUE i < 10 [L4] int a[10]; [L5] p = a [L6] p[0] = 1 [L3] i++ [L3] COND TRUE i < 10 [L4] int a[10]; [L5] p = a [L6] p[0] = 1 [L3] i++ [L3] COND TRUE i < 10 [L4] int a[10]; [L5] p = a [L6] p[0] = 1 [L3] i++ [L3] COND TRUE i < 10 [L4] int a[10]; [L5] p = a [L6] p[0] = 1 [L3] i++ [L3] COND FALSE !(i < 10) [L8] p[0] = 2 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.9s, OverallIterations: 6, TraceHistogramMax: 10, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 30 SDtfs, 23 SDslu, 21 SDs, 0 SdLazy, 60 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 59 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 64 NumberOfCodeBlocks, 64 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 48 ConstructedInterpolants, 0 QuantifiedInterpolants, 1000 SizeOfPredicates, 0 NumberOfNonLiveVariables, 131 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 9 InterpolantComputations, 3 PerfectInterpolantSequences, 0/51 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...