./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-regression/mutex_lock_int.c_1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_636ae8a8-33b4-4ae0-9cfc-597f7d665434/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_636ae8a8-33b4-4ae0-9cfc-597f7d665434/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_636ae8a8-33b4-4ae0-9cfc-597f7d665434/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_636ae8a8-33b4-4ae0-9cfc-597f7d665434/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-regression/mutex_lock_int.c_1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_636ae8a8-33b4-4ae0-9cfc-597f7d665434/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_636ae8a8-33b4-4ae0-9cfc-597f7d665434/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash af4906d6a697bbfac333ed7328e2407ee80be0b9 .......................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-22 12:57:00,871 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 12:57:00,900 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 12:57:00,945 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 12:57:00,946 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 12:57:00,951 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 12:57:00,953 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 12:57:00,961 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 12:57:00,964 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 12:57:00,971 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 12:57:00,972 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 12:57:00,973 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 12:57:00,973 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 12:57:00,975 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 12:57:00,976 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 12:57:00,977 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 12:57:00,978 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 12:57:00,979 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 12:57:00,981 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 12:57:00,988 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 12:57:00,991 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 12:57:00,992 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 12:57:00,998 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 12:57:00,999 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 12:57:01,006 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 12:57:01,006 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 12:57:01,007 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 12:57:01,009 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 12:57:01,009 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 12:57:01,010 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 12:57:01,011 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 12:57:01,012 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 12:57:01,013 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 12:57:01,014 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 12:57:01,016 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 12:57:01,016 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 12:57:01,017 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 12:57:01,017 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 12:57:01,017 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 12:57:01,018 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 12:57:01,019 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 12:57:01,020 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_636ae8a8-33b4-4ae0-9cfc-597f7d665434/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-22 12:57:01,065 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 12:57:01,065 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 12:57:01,066 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 12:57:01,066 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 12:57:01,067 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 12:57:01,067 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 12:57:01,067 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 12:57:01,067 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 12:57:01,067 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 12:57:01,068 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 12:57:01,069 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 12:57:01,069 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 12:57:01,069 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 12:57:01,069 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 12:57:01,069 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 12:57:01,070 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 12:57:01,070 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 12:57:01,070 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 12:57:01,071 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 12:57:01,071 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 12:57:01,071 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 12:57:01,071 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 12:57:01,071 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 12:57:01,072 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 12:57:01,072 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 12:57:01,072 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 12:57:01,072 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 12:57:01,072 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 12:57:01,073 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 12:57:01,073 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 12:57:01,073 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 12:57:01,073 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 12:57:01,074 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 12:57:01,074 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 12:57:01,074 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 12:57:01,074 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 12:57:01,074 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 12:57:01,074 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 12:57:01,075 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 12:57:01,075 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 12:57:01,075 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_636ae8a8-33b4-4ae0-9cfc-597f7d665434/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_636ae8a8-33b4-4ae0-9cfc-597f7d665434/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> af4906d6a697bbfac333ed7328e2407ee80be0b9 [2020-11-22 12:57:01,325 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 12:57:01,358 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 12:57:01,362 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 12:57:01,363 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 12:57:01,364 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 12:57:01,365 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_636ae8a8-33b4-4ae0-9cfc-597f7d665434/bin/utaipan/../../sv-benchmarks/c/ldv-regression/mutex_lock_int.c_1.i [2020-11-22 12:57:01,435 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_636ae8a8-33b4-4ae0-9cfc-597f7d665434/bin/utaipan/data/f4d917331/a62b4ff6831446118e173c2eca2edf17/FLAGad212725c [2020-11-22 12:57:01,881 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 12:57:01,881 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_636ae8a8-33b4-4ae0-9cfc-597f7d665434/sv-benchmarks/c/ldv-regression/mutex_lock_int.c_1.i [2020-11-22 12:57:01,887 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_636ae8a8-33b4-4ae0-9cfc-597f7d665434/bin/utaipan/data/f4d917331/a62b4ff6831446118e173c2eca2edf17/FLAGad212725c [2020-11-22 12:57:02,283 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_636ae8a8-33b4-4ae0-9cfc-597f7d665434/bin/utaipan/data/f4d917331/a62b4ff6831446118e173c2eca2edf17 [2020-11-22 12:57:02,285 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 12:57:02,287 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 12:57:02,288 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 12:57:02,288 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 12:57:02,292 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 12:57:02,292 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:57:02" (1/1) ... [2020-11-22 12:57:02,294 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@466a9c9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:02, skipping insertion in model container [2020-11-22 12:57:02,294 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:57:02" (1/1) ... [2020-11-22 12:57:02,301 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 12:57:02,314 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 12:57:02,475 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:57:02,496 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 12:57:02,514 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:57:02,540 INFO L208 MainTranslator]: Completed translation [2020-11-22 12:57:02,541 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:02 WrapperNode [2020-11-22 12:57:02,542 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 12:57:02,545 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 12:57:02,545 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 12:57:02,546 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 12:57:02,554 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:02" (1/1) ... [2020-11-22 12:57:02,563 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:02" (1/1) ... [2020-11-22 12:57:02,583 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 12:57:02,585 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 12:57:02,585 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 12:57:02,586 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 12:57:02,594 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:02" (1/1) ... [2020-11-22 12:57:02,594 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:02" (1/1) ... [2020-11-22 12:57:02,599 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:02" (1/1) ... [2020-11-22 12:57:02,600 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:02" (1/1) ... [2020-11-22 12:57:02,615 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:02" (1/1) ... [2020-11-22 12:57:02,616 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:02" (1/1) ... [2020-11-22 12:57:02,618 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:02" (1/1) ... [2020-11-22 12:57:02,620 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 12:57:02,621 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 12:57:02,621 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 12:57:02,621 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 12:57:02,622 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:02" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_636ae8a8-33b4-4ae0-9cfc-597f7d665434/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 12:57:02,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-22 12:57:02,675 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 12:57:02,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-22 12:57:02,676 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 12:57:02,676 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 12:57:02,676 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-22 12:57:02,676 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-22 12:57:03,025 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 12:57:03,026 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-11-22 12:57:03,028 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:57:03 BoogieIcfgContainer [2020-11-22 12:57:03,028 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 12:57:03,030 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 12:57:03,030 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 12:57:03,033 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 12:57:03,034 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 12:57:02" (1/3) ... [2020-11-22 12:57:03,034 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7002d10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:57:03, skipping insertion in model container [2020-11-22 12:57:03,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:02" (2/3) ... [2020-11-22 12:57:03,035 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7002d10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:57:03, skipping insertion in model container [2020-11-22 12:57:03,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:57:03" (3/3) ... [2020-11-22 12:57:03,037 INFO L111 eAbstractionObserver]: Analyzing ICFG mutex_lock_int.c_1.i [2020-11-22 12:57:03,047 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 12:57:03,051 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-11-22 12:57:03,062 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-22 12:57:03,086 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 12:57:03,086 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 12:57:03,087 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 12:57:03,087 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 12:57:03,087 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 12:57:03,087 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 12:57:03,087 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 12:57:03,088 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 12:57:03,100 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2020-11-22 12:57:03,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-11-22 12:57:03,105 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:03,105 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-11-22 12:57:03,106 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:57:03,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:03,112 INFO L82 PathProgramCache]: Analyzing trace with hash 64549, now seen corresponding path program 1 times [2020-11-22 12:57:03,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:57:03,122 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821667700] [2020-11-22 12:57:03,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:57:03,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:03,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:57:03,272 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821667700] [2020-11-22 12:57:03,273 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:57:03,273 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 12:57:03,273 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147025815] [2020-11-22 12:57:03,277 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:57:03,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:57:03,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:57:03,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:57:03,299 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 3 states. [2020-11-22 12:57:03,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:57:03,316 INFO L93 Difference]: Finished difference Result 16 states and 17 transitions. [2020-11-22 12:57:03,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:57:03,319 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-11-22 12:57:03,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:57:03,328 INFO L225 Difference]: With dead ends: 16 [2020-11-22 12:57:03,329 INFO L226 Difference]: Without dead ends: 6 [2020-11-22 12:57:03,332 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:57:03,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2020-11-22 12:57:03,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2020-11-22 12:57:03,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-11-22 12:57:03,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 5 transitions. [2020-11-22 12:57:03,368 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 5 transitions. Word has length 3 [2020-11-22 12:57:03,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:57:03,369 INFO L481 AbstractCegarLoop]: Abstraction has 6 states and 5 transitions. [2020-11-22 12:57:03,369 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:57:03,369 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 5 transitions. [2020-11-22 12:57:03,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-22 12:57:03,370 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:03,370 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-22 12:57:03,370 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-22 12:57:03,371 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:57:03,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:03,375 INFO L82 PathProgramCache]: Analyzing trace with hash 62300350, now seen corresponding path program 1 times [2020-11-22 12:57:03,376 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:57:03,376 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814723036] [2020-11-22 12:57:03,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:57:03,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:03,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:57:03,490 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814723036] [2020-11-22 12:57:03,490 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:57:03,490 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 12:57:03,490 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306858620] [2020-11-22 12:57:03,491 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 12:57:03,492 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:57:03,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 12:57:03,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-22 12:57:03,493 INFO L87 Difference]: Start difference. First operand 6 states and 5 transitions. Second operand 4 states. [2020-11-22 12:57:03,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:57:03,523 INFO L93 Difference]: Finished difference Result 6 states and 5 transitions. [2020-11-22 12:57:03,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 12:57:03,523 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2020-11-22 12:57:03,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:57:03,523 INFO L225 Difference]: With dead ends: 6 [2020-11-22 12:57:03,531 INFO L226 Difference]: Without dead ends: 0 [2020-11-22 12:57:03,532 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-22 12:57:03,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-22 12:57:03,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-22 12:57:03,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-22 12:57:03,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-22 12:57:03,533 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 5 [2020-11-22 12:57:03,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:57:03,533 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-22 12:57:03,533 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 12:57:03,534 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-22 12:57:03,534 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-22 12:57:03,534 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-22 12:57:03,536 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-22 12:57:03,541 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-22 12:57:03,541 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-22 12:57:03,542 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-22 12:57:03,542 INFO L274 CegarLoopResult]: For program point L26(line 26) no Hoare annotation was computed. [2020-11-22 12:57:03,545 INFO L274 CegarLoopResult]: For program point L26-1(line 26) no Hoare annotation was computed. [2020-11-22 12:57:03,545 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-22 12:57:03,546 INFO L274 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2020-11-22 12:57:03,546 INFO L274 CegarLoopResult]: For program point L20-1(line 20) no Hoare annotation was computed. [2020-11-22 12:57:03,546 INFO L274 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-11-22 12:57:03,546 INFO L274 CegarLoopResult]: For program point L16-1(line 16) no Hoare annotation was computed. [2020-11-22 12:57:03,553 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 12:57:03 BoogieIcfgContainer [2020-11-22 12:57:03,553 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 12:57:03,554 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 12:57:03,554 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 12:57:03,555 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 12:57:03,555 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:57:03" (3/4) ... [2020-11-22 12:57:03,563 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-22 12:57:03,573 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-11-22 12:57:03,573 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2020-11-22 12:57:03,574 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-22 12:57:03,574 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-22 12:57:03,624 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_636ae8a8-33b4-4ae0-9cfc-597f7d665434/bin/utaipan/witness.graphml [2020-11-22 12:57:03,624 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 12:57:03,626 INFO L168 Benchmark]: Toolchain (without parser) took 1338.39 ms. Allocated memory is still 142.6 MB. Free memory was 111.4 MB in the beginning and 116.1 MB in the end (delta: -4.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:57:03,626 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 90.2 MB. Free memory is still 49.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:57:03,627 INFO L168 Benchmark]: CACSL2BoogieTranslator took 253.72 ms. Allocated memory is still 142.6 MB. Free memory was 111.4 MB in the beginning and 119.2 MB in the end (delta: -7.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-22 12:57:03,628 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.19 ms. Allocated memory is still 142.6 MB. Free memory was 118.8 MB in the beginning and 117.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 12:57:03,628 INFO L168 Benchmark]: Boogie Preprocessor took 34.64 ms. Allocated memory is still 142.6 MB. Free memory was 117.4 MB in the beginning and 116.6 MB in the end (delta: 836.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:57:03,629 INFO L168 Benchmark]: RCFGBuilder took 407.24 ms. Allocated memory is still 142.6 MB. Free memory was 116.6 MB in the beginning and 100.7 MB in the end (delta: 15.9 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-11-22 12:57:03,630 INFO L168 Benchmark]: TraceAbstraction took 523.85 ms. Allocated memory is still 142.6 MB. Free memory was 100.3 MB in the beginning and 118.2 MB in the end (delta: -17.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:57:03,630 INFO L168 Benchmark]: Witness Printer took 70.23 ms. Allocated memory is still 142.6 MB. Free memory was 118.2 MB in the beginning and 116.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 12:57:03,637 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 90.2 MB. Free memory is still 49.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 253.72 ms. Allocated memory is still 142.6 MB. Free memory was 111.4 MB in the beginning and 119.2 MB in the end (delta: -7.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 38.19 ms. Allocated memory is still 142.6 MB. Free memory was 118.8 MB in the beginning and 117.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 34.64 ms. Allocated memory is still 142.6 MB. Free memory was 117.4 MB in the beginning and 116.6 MB in the end (delta: 836.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 407.24 ms. Allocated memory is still 142.6 MB. Free memory was 116.6 MB in the beginning and 100.7 MB in the end (delta: 15.9 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 523.85 ms. Allocated memory is still 142.6 MB. Free memory was 100.3 MB in the beginning and 118.2 MB in the end (delta: -17.9 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 70.23 ms. Allocated memory is still 142.6 MB. Free memory was 118.2 MB in the beginning and 116.1 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: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 8 SDtfs, 1 SDslu, 7 SDs, 0 SdLazy, 3 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10occurred in iteration=0, 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 0 LocationsWithAnnotation, 0 PreInvPairs, 0 NumberOfFragments, 0 HoareAnnotationTreeSize, 0 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 0 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 8 NumberOfCodeBlocks, 8 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 80 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 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 correct! Received shutdown request...