./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted/Copenhagen.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_255eb156-ae1d-45c0-b7ee-daeaf1e0834d/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_255eb156-ae1d-45c0-b7ee-daeaf1e0834d/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_255eb156-ae1d-45c0-b7ee-daeaf1e0834d/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_255eb156-ae1d-45c0-b7ee-daeaf1e0834d/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted/Copenhagen.c -s /tmp/vcloud-vcloud-master/worker/run_dir_255eb156-ae1d-45c0-b7ee-daeaf1e0834d/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_255eb156-ae1d-45c0-b7ee-daeaf1e0834d/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 9bcaeaea390de0d2b32b8c11c56b4b66e7b2005e ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 02:51:26,190 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 02:51:26,192 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 02:51:26,247 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 02:51:26,248 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 02:51:26,264 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 02:51:26,268 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 02:51:26,275 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 02:51:26,279 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 02:51:26,285 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 02:51:26,286 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 02:51:26,288 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 02:51:26,289 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 02:51:26,292 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 02:51:26,294 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 02:51:26,296 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 02:51:26,297 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 02:51:26,309 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 02:51:26,314 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 02:51:26,322 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 02:51:26,324 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 02:51:26,326 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 02:51:26,328 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 02:51:26,330 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 02:51:26,339 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 02:51:26,340 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 02:51:26,340 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 02:51:26,342 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 02:51:26,343 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 02:51:26,345 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 02:51:26,345 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 02:51:26,347 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 02:51:26,349 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 02:51:26,350 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 02:51:26,352 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 02:51:26,352 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 02:51:26,353 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 02:51:26,354 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 02:51:26,354 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 02:51:26,355 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 02:51:26,356 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 02:51:26,358 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_255eb156-ae1d-45c0-b7ee-daeaf1e0834d/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf [2020-11-30 02:51:26,404 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 02:51:26,405 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 02:51:26,406 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-30 02:51:26,407 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-30 02:51:26,407 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-30 02:51:26,407 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-30 02:51:26,407 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-30 02:51:26,408 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-30 02:51:26,408 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-30 02:51:26,408 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-30 02:51:26,409 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-30 02:51:26,409 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-30 02:51:26,409 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-30 02:51:26,410 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-30 02:51:26,410 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-30 02:51:26,411 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 02:51:26,411 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-30 02:51:26,411 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 02:51:26,411 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 02:51:26,411 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 02:51:26,412 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 02:51:26,412 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 02:51:26,412 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-11-30 02:51:26,412 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 02:51:26,412 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 02:51:26,413 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 02:51:26,413 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 02:51:26,413 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 02:51:26,413 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 02:51:26,414 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 02:51:26,414 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 02:51:26,414 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 02:51:26,414 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 02:51:26,414 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-30 02:51:26,415 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 02:51:26,415 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 02:51:26,415 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 02:51:26,415 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 02:51:26,415 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_255eb156-ae1d-45c0-b7ee-daeaf1e0834d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_255eb156-ae1d-45c0-b7ee-daeaf1e0834d/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9bcaeaea390de0d2b32b8c11c56b4b66e7b2005e [2020-11-30 02:51:26,667 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 02:51:26,709 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 02:51:26,714 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 02:51:26,715 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 02:51:26,716 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 02:51:26,717 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_255eb156-ae1d-45c0-b7ee-daeaf1e0834d/bin/utaipan/../../sv-benchmarks/c/termination-crafted/Copenhagen.c [2020-11-30 02:51:26,791 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_255eb156-ae1d-45c0-b7ee-daeaf1e0834d/bin/utaipan/data/b0a75e643/2c71e45b648f42d8948a56c50b5be596/FLAG96e540bfc [2020-11-30 02:51:27,378 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 02:51:27,379 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_255eb156-ae1d-45c0-b7ee-daeaf1e0834d/sv-benchmarks/c/termination-crafted/Copenhagen.c [2020-11-30 02:51:27,389 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_255eb156-ae1d-45c0-b7ee-daeaf1e0834d/bin/utaipan/data/b0a75e643/2c71e45b648f42d8948a56c50b5be596/FLAG96e540bfc [2020-11-30 02:51:27,735 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_255eb156-ae1d-45c0-b7ee-daeaf1e0834d/bin/utaipan/data/b0a75e643/2c71e45b648f42d8948a56c50b5be596 [2020-11-30 02:51:27,737 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 02:51:27,744 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 02:51:27,746 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 02:51:27,748 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 02:51:27,751 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 02:51:27,753 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:51:27" (1/1) ... [2020-11-30 02:51:27,757 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57a04b23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:51:27, skipping insertion in model container [2020-11-30 02:51:27,758 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:51:27" (1/1) ... [2020-11-30 02:51:27,766 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 02:51:27,782 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 02:51:27,962 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:51:27,975 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 02:51:28,007 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:51:28,035 INFO L208 MainTranslator]: Completed translation [2020-11-30 02:51:28,036 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:51:28 WrapperNode [2020-11-30 02:51:28,036 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 02:51:28,038 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 02:51:28,043 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 02:51:28,043 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 02:51:28,052 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:51:28" (1/1) ... [2020-11-30 02:51:28,058 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:51:28" (1/1) ... [2020-11-30 02:51:28,076 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 02:51:28,078 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 02:51:28,078 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 02:51:28,079 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 02:51:28,087 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:51:28" (1/1) ... [2020-11-30 02:51:28,088 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:51:28" (1/1) ... [2020-11-30 02:51:28,089 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:51:28" (1/1) ... [2020-11-30 02:51:28,090 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:51:28" (1/1) ... [2020-11-30 02:51:28,093 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:51:28" (1/1) ... [2020-11-30 02:51:28,100 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:51:28" (1/1) ... [2020-11-30 02:51:28,101 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:51:28" (1/1) ... [2020-11-30 02:51:28,106 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 02:51:28,108 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 02:51:28,108 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 02:51:28,109 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 02:51:28,110 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:51:28" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_255eb156-ae1d-45c0-b7ee-daeaf1e0834d/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 [2020-11-30 02:51:28,190 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 02:51:28,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 02:51:28,438 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 02:51:28,438 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-11-30 02:51:28,440 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:51:28 BoogieIcfgContainer [2020-11-30 02:51:28,440 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 02:51:28,442 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 02:51:28,442 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 02:51:28,449 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 02:51:28,449 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 02:51:27" (1/3) ... [2020-11-30 02:51:28,450 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@773138fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:51:28, skipping insertion in model container [2020-11-30 02:51:28,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:51:28" (2/3) ... [2020-11-30 02:51:28,451 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@773138fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:51:28, skipping insertion in model container [2020-11-30 02:51:28,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:51:28" (3/3) ... [2020-11-30 02:51:28,452 INFO L111 eAbstractionObserver]: Analyzing ICFG Copenhagen.c [2020-11-30 02:51:28,464 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 02:51:28,468 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-11-30 02:51:28,480 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-30 02:51:28,516 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 02:51:28,516 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 02:51:28,516 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 02:51:28,517 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 02:51:28,517 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 02:51:28,517 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 02:51:28,517 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 02:51:28,517 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 02:51:28,536 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2020-11-30 02:51:28,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-11-30 02:51:28,545 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:51:28,545 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-11-30 02:51:28,546 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 02:51:28,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:51:28,553 INFO L82 PathProgramCache]: Analyzing trace with hash 31073, now seen corresponding path program 1 times [2020-11-30 02:51:28,564 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:51:28,565 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335802284] [2020-11-30 02:51:28,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:51:28,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:51:28,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:51:28,807 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335802284] [2020-11-30 02:51:28,808 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:51:28,808 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-30 02:51:28,809 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070232874] [2020-11-30 02:51:28,813 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:51:28,814 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:51:28,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:51:28,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:51:28,845 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 3 states. [2020-11-30 02:51:28,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:51:28,979 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2020-11-30 02:51:28,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:51:28,983 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-11-30 02:51:28,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:51:28,992 INFO L225 Difference]: With dead ends: 20 [2020-11-30 02:51:28,993 INFO L226 Difference]: Without dead ends: 17 [2020-11-30 02:51:28,998 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:51:29,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-11-30 02:51:29,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 12. [2020-11-30 02:51:29,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-11-30 02:51:29,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2020-11-30 02:51:29,048 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 3 [2020-11-30 02:51:29,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:51:29,048 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2020-11-30 02:51:29,049 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:51:29,049 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2020-11-30 02:51:29,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-30 02:51:29,049 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:51:29,050 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-30 02:51:29,050 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 02:51:29,050 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 02:51:29,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:51:29,054 INFO L82 PathProgramCache]: Analyzing trace with hash 963307, now seen corresponding path program 1 times [2020-11-30 02:51:29,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:51:29,054 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739516789] [2020-11-30 02:51:29,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:51:29,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:51:29,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:51:29,101 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739516789] [2020-11-30 02:51:29,102 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:51:29,102 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 02:51:29,102 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152523046] [2020-11-30 02:51:29,103 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:51:29,104 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:51:29,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:51:29,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:51:29,105 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 3 states. [2020-11-30 02:51:29,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:51:29,128 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2020-11-30 02:51:29,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:51:29,129 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-11-30 02:51:29,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:51:29,130 INFO L225 Difference]: With dead ends: 12 [2020-11-30 02:51:29,130 INFO L226 Difference]: Without dead ends: 11 [2020-11-30 02:51:29,131 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 [2020-11-30 02:51:29,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-11-30 02:51:29,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-11-30 02:51:29,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-11-30 02:51:29,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2020-11-30 02:51:29,135 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 4 [2020-11-30 02:51:29,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:51:29,135 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2020-11-30 02:51:29,135 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:51:29,136 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2020-11-30 02:51:29,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-30 02:51:29,136 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:51:29,136 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-30 02:51:29,137 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 02:51:29,137 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 02:51:29,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:51:29,138 INFO L82 PathProgramCache]: Analyzing trace with hash 29862563, now seen corresponding path program 1 times [2020-11-30 02:51:29,138 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:51:29,138 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368165529] [2020-11-30 02:51:29,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:51:29,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:51:29,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:51:29,191 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368165529] [2020-11-30 02:51:29,191 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:51:29,191 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 02:51:29,191 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348829599] [2020-11-30 02:51:29,192 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 02:51:29,192 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:51:29,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 02:51:29,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 02:51:29,194 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 4 states. [2020-11-30 02:51:29,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:51:29,266 INFO L93 Difference]: Finished difference Result 16 states and 17 transitions. [2020-11-30 02:51:29,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 02:51:29,268 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2020-11-30 02:51:29,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:51:29,268 INFO L225 Difference]: With dead ends: 16 [2020-11-30 02:51:29,269 INFO L226 Difference]: Without dead ends: 15 [2020-11-30 02:51:29,269 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-30 02:51:29,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-11-30 02:51:29,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 13. [2020-11-30 02:51:29,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-11-30 02:51:29,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2020-11-30 02:51:29,273 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 5 [2020-11-30 02:51:29,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:51:29,274 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2020-11-30 02:51:29,274 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 02:51:29,274 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2020-11-30 02:51:29,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-30 02:51:29,274 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:51:29,275 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-30 02:51:29,275 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-30 02:51:29,275 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 02:51:29,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:51:29,276 INFO L82 PathProgramCache]: Analyzing trace with hash 925739501, now seen corresponding path program 1 times [2020-11-30 02:51:29,276 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:51:29,277 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645022411] [2020-11-30 02:51:29,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:51:29,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:51:29,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:51:29,321 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645022411] [2020-11-30 02:51:29,321 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:51:29,321 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 02:51:29,321 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561664863] [2020-11-30 02:51:29,322 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:51:29,322 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:51:29,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:51:29,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:51:29,323 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 3 states. [2020-11-30 02:51:29,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:51:29,336 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2020-11-30 02:51:29,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:51:29,337 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-11-30 02:51:29,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:51:29,338 INFO L225 Difference]: With dead ends: 13 [2020-11-30 02:51:29,338 INFO L226 Difference]: Without dead ends: 12 [2020-11-30 02:51:29,339 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 [2020-11-30 02:51:29,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-11-30 02:51:29,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-11-30 02:51:29,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-11-30 02:51:29,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2020-11-30 02:51:29,342 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 6 [2020-11-30 02:51:29,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:51:29,342 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2020-11-30 02:51:29,343 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:51:29,343 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2020-11-30 02:51:29,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-30 02:51:29,343 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:51:29,343 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2020-11-30 02:51:29,344 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-30 02:51:29,344 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 02:51:29,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:51:29,345 INFO L82 PathProgramCache]: Analyzing trace with hash 577431471, now seen corresponding path program 1 times [2020-11-30 02:51:29,345 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:51:29,345 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754985019] [2020-11-30 02:51:29,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:51:29,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:51:29,387 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:51:29,387 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754985019] [2020-11-30 02:51:29,388 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:51:29,388 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 02:51:29,388 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391045439] [2020-11-30 02:51:29,388 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 02:51:29,389 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:51:29,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 02:51:29,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 02:51:29,390 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 4 states. [2020-11-30 02:51:29,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:51:29,424 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2020-11-30 02:51:29,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 02:51:29,424 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-11-30 02:51:29,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:51:29,425 INFO L225 Difference]: With dead ends: 12 [2020-11-30 02:51:29,425 INFO L226 Difference]: Without dead ends: 11 [2020-11-30 02:51:29,425 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 [2020-11-30 02:51:29,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-11-30 02:51:29,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-11-30 02:51:29,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-11-30 02:51:29,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2020-11-30 02:51:29,428 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 8 [2020-11-30 02:51:29,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:51:29,429 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2020-11-30 02:51:29,429 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 02:51:29,429 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2020-11-30 02:51:29,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-30 02:51:29,429 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:51:29,429 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1] [2020-11-30 02:51:29,430 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-30 02:51:29,430 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 02:51:29,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:51:29,431 INFO L82 PathProgramCache]: Analyzing trace with hash 860863857, now seen corresponding path program 1 times [2020-11-30 02:51:29,431 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:51:29,431 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453411285] [2020-11-30 02:51:29,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:51:29,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:51:29,485 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:51:29,485 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453411285] [2020-11-30 02:51:29,486 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1579617062] [2020-11-30 02:51:29,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_255eb156-ae1d-45c0-b7ee-daeaf1e0834d/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 02:51:29,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:51:29,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-30 02:51:29,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:51:29,613 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:51:29,614 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:51:29,690 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:51:29,690 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1604767950] [2020-11-30 02:51:29,723 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2020-11-30 02:51:29,724 INFO L166 IcfgInterpreter]: Building call graph [2020-11-30 02:51:29,731 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-30 02:51:29,740 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-30 02:51:29,740 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-30 02:51:29,793 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-30 02:51:29,995 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2020-11-30 02:51:29,996 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3, 3] total 9 [2020-11-30 02:51:29,996 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407519994] [2020-11-30 02:51:29,997 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 02:51:29,997 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:51:29,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 02:51:29,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-11-30 02:51:29,998 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 5 states. [2020-11-30 02:51:30,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:51:30,024 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2020-11-30 02:51:30,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 02:51:30,027 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-11-30 02:51:30,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:51:30,027 INFO L225 Difference]: With dead ends: 11 [2020-11-30 02:51:30,027 INFO L226 Difference]: Without dead ends: 0 [2020-11-30 02:51:30,028 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 4 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-11-30 02:51:30,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-30 02:51:30,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-30 02:51:30,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-30 02:51:30,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-30 02:51:30,029 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2020-11-30 02:51:30,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:51:30,029 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 02:51:30,029 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 02:51:30,029 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-30 02:51:30,029 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-30 02:51:30,230 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-11-30 02:51:30,232 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-30 02:51:30,267 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2020-11-30 02:51:30,267 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-30 02:51:30,268 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 19) no Hoare annotation was computed. [2020-11-30 02:51:30,268 INFO L274 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-11-30 02:51:30,268 INFO L274 CegarLoopResult]: For program point L19-1(line 19) no Hoare annotation was computed. [2020-11-30 02:51:30,268 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2020-11-30 02:51:30,268 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 19) no Hoare annotation was computed. [2020-11-30 02:51:30,268 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-30 02:51:30,268 INFO L274 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-11-30 02:51:30,268 INFO L274 CegarLoopResult]: For program point L18-1(line 18) no Hoare annotation was computed. [2020-11-30 02:51:30,269 INFO L270 CegarLoopResult]: At program point L16-2(lines 16 20) the Hoare annotation is: (and (<= ULTIMATE.start_main_~x~0 2147483647) (<= 0 (+ ULTIMATE.start_main_~y~0 2147483648)) (<= 0 (+ ULTIMATE.start_main_~x~0 2147483648)) (<= ULTIMATE.start_main_~y~0 2147483647)) [2020-11-30 02:51:30,293 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 02:51:30 BoogieIcfgContainer [2020-11-30 02:51:30,293 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 02:51:30,294 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 02:51:30,294 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 02:51:30,294 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 02:51:30,295 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:51:28" (3/4) ... [2020-11-30 02:51:30,298 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-30 02:51:30,307 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2020-11-30 02:51:30,307 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-11-30 02:51:30,307 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 02:51:30,342 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_255eb156-ae1d-45c0-b7ee-daeaf1e0834d/bin/utaipan/witness.graphml [2020-11-30 02:51:30,342 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 02:51:30,344 INFO L168 Benchmark]: Toolchain (without parser) took 2598.77 ms. Allocated memory was 115.3 MB in the beginning and 167.8 MB in the end (delta: 52.4 MB). Free memory was 89.5 MB in the beginning and 141.6 MB in the end (delta: -52.1 MB). Peak memory consumption was 27.2 kB. Max. memory is 16.1 GB. [2020-11-30 02:51:30,344 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 115.3 MB. Free memory is still 73.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:51:30,345 INFO L168 Benchmark]: CACSL2BoogieTranslator took 290.49 ms. Allocated memory was 115.3 MB in the beginning and 167.8 MB in the end (delta: 52.4 MB). Free memory was 89.5 MB in the beginning and 145.5 MB in the end (delta: -55.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-30 02:51:30,345 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.56 ms. Allocated memory is still 167.8 MB. Free memory was 145.5 MB in the beginning and 144.2 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:51:30,346 INFO L168 Benchmark]: Boogie Preprocessor took 29.27 ms. Allocated memory is still 167.8 MB. Free memory was 144.2 MB in the beginning and 143.4 MB in the end (delta: 817.9 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 02:51:30,346 INFO L168 Benchmark]: RCFGBuilder took 332.43 ms. Allocated memory is still 167.8 MB. Free memory was 143.4 MB in the beginning and 132.3 MB in the end (delta: 11.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-30 02:51:30,347 INFO L168 Benchmark]: TraceAbstraction took 1851.08 ms. Allocated memory is still 167.8 MB. Free memory was 131.7 MB in the beginning and 144.5 MB in the end (delta: -12.8 MB). Peak memory consumption was 85.7 MB. Max. memory is 16.1 GB. [2020-11-30 02:51:30,347 INFO L168 Benchmark]: Witness Printer took 48.28 ms. Allocated memory is still 167.8 MB. Free memory was 144.5 MB in the beginning and 141.6 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 02:51:30,350 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 115.3 MB. Free memory is still 73.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 290.49 ms. Allocated memory was 115.3 MB in the beginning and 167.8 MB in the end (delta: 52.4 MB). Free memory was 89.5 MB in the beginning and 145.5 MB in the end (delta: -55.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 38.56 ms. Allocated memory is still 167.8 MB. Free memory was 145.5 MB in the beginning and 144.2 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 29.27 ms. Allocated memory is still 167.8 MB. Free memory was 144.2 MB in the beginning and 143.4 MB in the end (delta: 817.9 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 332.43 ms. Allocated memory is still 167.8 MB. Free memory was 143.4 MB in the beginning and 132.3 MB in the end (delta: 11.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1851.08 ms. Allocated memory is still 167.8 MB. Free memory was 131.7 MB in the beginning and 144.5 MB in the end (delta: -12.8 MB). Peak memory consumption was 85.7 MB. Max. memory is 16.1 GB. * Witness Printer took 48.28 ms. Allocated memory is still 167.8 MB. Free memory was 144.5 MB in the beginning and 141.6 MB in the end (delta: 2.9 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: 19]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 18]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 19]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 18]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: ((x <= 2147483647 && 0 <= y + 2147483648) && 0 <= x + 2147483648) && y <= 2147483647 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.7s, OverallIterations: 6, TraceHistogramMax: 2, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 28 SDtfs, 27 SDslu, 9 SDs, 0 SdLazy, 58 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 43 GetRequests, 21 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=3, 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, 6 MinimizatonAttempts, 7 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 2 NumberOfFragments, 17 HoareAnnotationTreeSize, 1 FomulaSimplifications, 24 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 46 NumberOfCodeBlocks, 46 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 48 ConstructedInterpolants, 0 QuantifiedInterpolants, 966 SizeOfPredicates, 2 NumberOfNonLiveVariables, 31 ConjunctsInSsa, 5 ConjunctsInUnsatCore, 8 InterpolantComputations, 5 PerfectInterpolantSequences, 2/14 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: OVERALL_TIME[ms]: 71, ICFG_INTERPRETER_ENTERED_PROCEDURES: 1, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 5, DAG_INTERPRETER_EARLY_EXITS: 0, TOOLS_POST_APPLICATIONS: 11, TOOLS_POST_TIME[ms]: 12, TOOLS_POST_CALL_APPLICATIONS: 0, TOOLS_POST_CALL_TIME[ms]: 0, TOOLS_POST_RETURN_APPLICATIONS: 0, TOOLS_POST_RETURN_TIME[ms]: 0, TOOLS_QUANTIFIERELIM_APPLICATIONS: 11, TOOLS_QUANTIFIERELIM_TIME[ms]: 7, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 3, FLUID_QUERY_TIME[ms]: 3, FLUID_QUERIES: 22, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 0, DOMAIN_JOIN_TIME[ms]: 0, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME[ms]: 0, DOMAIN_WIDEN_APPLICATIONS: 0, DOMAIN_WIDEN_TIME[ms]: 0, DOMAIN_ISSUBSETEQ_APPLICATIONS: 1, DOMAIN_ISSUBSETEQ_TIME[ms]: 5, DOMAIN_ISBOTTOM_APPLICATIONS: 5, DOMAIN_ISBOTTOM_TIME[ms]: 7, LOOP_SUMMARIZER_APPLICATIONS: 1, LOOP_SUMMARIZER_CACHE_MISSES: 1, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 13, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 12, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 1, CALL_SUMMARIZER_APPLICATIONS: 0, CALL_SUMMARIZER_CACHE_MISSES: 0, CALL_SUMMARIZER_OVERALL_TIME[ms]: 0, CALL_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 0, PROCEDURE_GRAPH_BUILDER_TIME[ms]: 2, PATH_EXPR_TIME[ms]: 3, REGEX_TO_DAG_TIME[ms]: 3, DAG_COMPRESSION_TIME[ms]: 7, DAG_COMPRESSION_PROCESSED_NODES: 45, DAG_COMPRESSION_RETAINED_NODES: 24, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...