./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted/MutualRecursion_1a.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec9b4a3-1726-4127-826d-339e3fcc8360/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec9b4a3-1726-4127-826d-339e3fcc8360/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec9b4a3-1726-4127-826d-339e3fcc8360/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec9b4a3-1726-4127-826d-339e3fcc8360/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted/MutualRecursion_1a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec9b4a3-1726-4127-826d-339e3fcc8360/bin/utaipan-WLngWcDbfI/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec9b4a3-1726-4127-826d-339e3fcc8360/bin/utaipan-WLngWcDbfI --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 c27ad91a5bec233234e07a14bfd5505e082df4cd ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:30:35,137 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:30:35,140 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:30:35,195 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:30:35,195 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:30:35,202 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:30:35,205 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:30:35,209 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:30:35,212 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:30:35,218 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:30:35,219 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:30:35,220 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:30:35,221 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:30:35,224 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:30:35,226 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:30:35,227 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:30:35,229 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:30:35,233 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:30:35,235 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:30:35,243 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:30:35,245 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:30:35,247 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:30:35,250 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:30:35,251 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:30:35,255 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:30:35,256 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:30:35,256 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:30:35,258 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:30:35,259 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:30:35,260 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:30:35,261 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:30:35,262 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:30:35,264 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:30:35,265 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:30:35,267 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:30:35,267 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:30:35,268 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:30:35,268 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:30:35,268 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:30:35,269 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:30:35,270 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:30:35,273 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec9b4a3-1726-4127-826d-339e3fcc8360/bin/utaipan-WLngWcDbfI/config/svcomp-Overflow-64bit-Taipan_Default.epf [2021-10-11 02:30:35,314 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:30:35,314 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:30:35,315 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:30:35,316 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:30:35,316 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:30:35,316 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:30:35,316 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:30:35,317 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:30:35,317 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:30:35,317 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:30:35,318 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:30:35,318 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:30:35,318 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:30:35,319 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:30:35,319 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:30:35,320 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:30:35,320 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-11 02:30:35,320 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:30:35,320 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:30:35,320 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:30:35,321 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:30:35,321 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:30:35,321 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-11 02:30:35,321 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:30:35,321 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:30:35,321 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:30:35,322 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:30:35,322 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:30:35,322 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:30:35,324 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:30:35,324 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:30:35,324 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:30:35,324 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:30:35,325 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:30:35,325 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:30:35,325 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:30:35,325 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:30:35,325 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec9b4a3-1726-4127-826d-339e3fcc8360/bin/utaipan-WLngWcDbfI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec9b4a3-1726-4127-826d-339e3fcc8360/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c27ad91a5bec233234e07a14bfd5505e082df4cd [2021-10-11 02:30:35,627 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:30:35,654 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:30:35,658 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:30:35,659 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:30:35,660 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:30:35,661 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec9b4a3-1726-4127-826d-339e3fcc8360/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/termination-crafted/MutualRecursion_1a.c [2021-10-11 02:30:35,734 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec9b4a3-1726-4127-826d-339e3fcc8360/bin/utaipan-WLngWcDbfI/data/6fe6c5f96/56e5b40a84c04b21a303dd29fab131ae/FLAGede1982e0 [2021-10-11 02:30:36,300 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:30:36,300 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec9b4a3-1726-4127-826d-339e3fcc8360/sv-benchmarks/c/termination-crafted/MutualRecursion_1a.c [2021-10-11 02:30:36,311 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec9b4a3-1726-4127-826d-339e3fcc8360/bin/utaipan-WLngWcDbfI/data/6fe6c5f96/56e5b40a84c04b21a303dd29fab131ae/FLAGede1982e0 [2021-10-11 02:30:36,653 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec9b4a3-1726-4127-826d-339e3fcc8360/bin/utaipan-WLngWcDbfI/data/6fe6c5f96/56e5b40a84c04b21a303dd29fab131ae [2021-10-11 02:30:36,655 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:30:36,656 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:30:36,663 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:30:36,663 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:30:36,667 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:30:36,668 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:30:36" (1/1) ... [2021-10-11 02:30:36,672 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c8cf119 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:36, skipping insertion in model container [2021-10-11 02:30:36,672 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:30:36" (1/1) ... [2021-10-11 02:30:36,680 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:30:36,695 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:30:36,863 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:30:36,875 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:30:36,905 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:30:36,919 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:30:36,921 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:36 WrapperNode [2021-10-11 02:30:36,921 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:30:36,923 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:30:36,923 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:30:36,923 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:30:36,932 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:36" (1/1) ... [2021-10-11 02:30:36,936 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:36" (1/1) ... [2021-10-11 02:30:36,954 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:30:36,955 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:30:36,956 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:30:36,956 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:30:36,964 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:36" (1/1) ... [2021-10-11 02:30:36,965 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:36" (1/1) ... [2021-10-11 02:30:36,966 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:36" (1/1) ... [2021-10-11 02:30:36,968 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:36" (1/1) ... [2021-10-11 02:30:36,971 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:36" (1/1) ... [2021-10-11 02:30:36,973 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:36" (1/1) ... [2021-10-11 02:30:36,974 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:36" (1/1) ... [2021-10-11 02:30:36,975 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:30:36,976 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:30:36,976 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:30:36,976 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:30:36,978 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:36" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec9b4a3-1726-4127-826d-339e3fcc8360/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:30:37,060 INFO L130 BoogieDeclarations]: Found specification of procedure f [2021-10-11 02:30:37,060 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2021-10-11 02:30:37,060 INFO L130 BoogieDeclarations]: Found specification of procedure g [2021-10-11 02:30:37,060 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2021-10-11 02:30:37,061 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:30:37,061 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:30:37,362 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:30:37,362 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-11 02:30:37,365 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:30:37 BoogieIcfgContainer [2021-10-11 02:30:37,365 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:30:37,366 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:30:37,367 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:30:37,371 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:30:37,371 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:30:36" (1/3) ... [2021-10-11 02:30:37,372 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ab19f74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:30:37, skipping insertion in model container [2021-10-11 02:30:37,372 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:36" (2/3) ... [2021-10-11 02:30:37,373 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ab19f74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:30:37, skipping insertion in model container [2021-10-11 02:30:37,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:30:37" (3/3) ... [2021-10-11 02:30:37,374 INFO L111 eAbstractionObserver]: Analyzing ICFG MutualRecursion_1a.c [2021-10-11 02:30:37,388 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:30:37,391 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 10 error locations. [2021-10-11 02:30:37,411 INFO L253 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-10-11 02:30:37,461 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:30:37,461 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:30:37,461 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:30:37,461 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:30:37,461 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:30:37,462 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:30:37,462 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:30:37,462 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:30:37,488 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2021-10-11 02:30:37,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-11 02:30:37,493 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:30:37,494 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-11 02:30:37,496 INFO L429 AbstractCegarLoop]: === Iteration 1 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 02:30:37,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:30:37,506 INFO L82 PathProgramCache]: Analyzing trace with hash 68150020, now seen corresponding path program 1 times [2021-10-11 02:30:37,515 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:30:37,516 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726128955] [2021-10-11 02:30:37,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:30:37,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:30:37,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:30:37,735 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726128955] [2021-10-11 02:30:37,735 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:30:37,736 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:30:37,737 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93723048] [2021-10-11 02:30:37,742 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:30:37,743 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:30:37,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:30:37,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:30:37,761 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 5 states. [2021-10-11 02:30:37,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:30:37,953 INFO L93 Difference]: Finished difference Result 62 states and 69 transitions. [2021-10-11 02:30:37,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 02:30:37,956 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 5 [2021-10-11 02:30:37,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:30:37,982 INFO L225 Difference]: With dead ends: 62 [2021-10-11 02:30:37,983 INFO L226 Difference]: Without dead ends: 56 [2021-10-11 02:30:37,988 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:30:38,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-10-11 02:30:38,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 50. [2021-10-11 02:30:38,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2021-10-11 02:30:38,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 59 transitions. [2021-10-11 02:30:38,076 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 59 transitions. Word has length 5 [2021-10-11 02:30:38,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:30:38,081 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 59 transitions. [2021-10-11 02:30:38,081 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:30:38,081 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 59 transitions. [2021-10-11 02:30:38,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-11 02:30:38,082 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:30:38,082 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-11 02:30:38,082 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:30:38,099 INFO L429 AbstractCegarLoop]: === Iteration 2 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 02:30:38,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:30:38,100 INFO L82 PathProgramCache]: Analyzing trace with hash 2112650676, now seen corresponding path program 1 times [2021-10-11 02:30:38,100 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:30:38,101 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535457241] [2021-10-11 02:30:38,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:30:38,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:30:38,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:30:38,126 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535457241] [2021-10-11 02:30:38,126 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:30:38,126 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:30:38,127 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905801758] [2021-10-11 02:30:38,128 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:30:38,128 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:30:38,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:30:38,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:30:38,130 INFO L87 Difference]: Start difference. First operand 50 states and 59 transitions. Second operand 3 states. [2021-10-11 02:30:38,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:30:38,165 INFO L93 Difference]: Finished difference Result 52 states and 62 transitions. [2021-10-11 02:30:38,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:30:38,167 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2021-10-11 02:30:38,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:30:38,168 INFO L225 Difference]: With dead ends: 52 [2021-10-11 02:30:38,168 INFO L226 Difference]: Without dead ends: 50 [2021-10-11 02:30:38,169 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:30:38,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-10-11 02:30:38,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 48. [2021-10-11 02:30:38,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2021-10-11 02:30:38,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 55 transitions. [2021-10-11 02:30:38,180 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 55 transitions. Word has length 6 [2021-10-11 02:30:38,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:30:38,181 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 55 transitions. [2021-10-11 02:30:38,181 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:30:38,181 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 55 transitions. [2021-10-11 02:30:38,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-11 02:30:38,182 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:30:38,182 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:30:38,183 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:30:38,183 INFO L429 AbstractCegarLoop]: === Iteration 3 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 02:30:38,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:30:38,184 INFO L82 PathProgramCache]: Analyzing trace with hash 803040358, now seen corresponding path program 1 times [2021-10-11 02:30:38,184 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:30:38,184 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108332803] [2021-10-11 02:30:38,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:30:38,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:30:38,274 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:30:38,275 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108332803] [2021-10-11 02:30:38,275 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:30:38,275 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-11 02:30:38,275 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190590420] [2021-10-11 02:30:38,276 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-10-11 02:30:38,276 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:30:38,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-11 02:30:38,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-10-11 02:30:38,277 INFO L87 Difference]: Start difference. First operand 48 states and 55 transitions. Second operand 9 states. [2021-10-11 02:30:38,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:30:38,541 INFO L93 Difference]: Finished difference Result 66 states and 77 transitions. [2021-10-11 02:30:38,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-11 02:30:38,546 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13 [2021-10-11 02:30:38,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:30:38,548 INFO L225 Difference]: With dead ends: 66 [2021-10-11 02:30:38,549 INFO L226 Difference]: Without dead ends: 63 [2021-10-11 02:30:38,550 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2021-10-11 02:30:38,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-10-11 02:30:38,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 59. [2021-10-11 02:30:38,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2021-10-11 02:30:38,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 70 transitions. [2021-10-11 02:30:38,561 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 70 transitions. Word has length 13 [2021-10-11 02:30:38,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:30:38,562 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 70 transitions. [2021-10-11 02:30:38,562 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-10-11 02:30:38,562 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 70 transitions. [2021-10-11 02:30:38,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-11 02:30:38,563 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:30:38,564 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:30:38,564 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 02:30:38,564 INFO L429 AbstractCegarLoop]: === Iteration 4 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 02:30:38,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:30:38,565 INFO L82 PathProgramCache]: Analyzing trace with hash -265858514, now seen corresponding path program 1 times [2021-10-11 02:30:38,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:30:38,565 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996582074] [2021-10-11 02:30:38,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:30:38,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:30:38,607 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-11 02:30:38,608 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996582074] [2021-10-11 02:30:38,608 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:30:38,608 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:30:38,609 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004466206] [2021-10-11 02:30:38,609 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:30:38,609 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:30:38,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:30:38,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:30:38,612 INFO L87 Difference]: Start difference. First operand 59 states and 70 transitions. Second operand 3 states. [2021-10-11 02:30:38,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:30:38,633 INFO L93 Difference]: Finished difference Result 61 states and 77 transitions. [2021-10-11 02:30:38,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:30:38,634 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2021-10-11 02:30:38,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:30:38,636 INFO L225 Difference]: With dead ends: 61 [2021-10-11 02:30:38,636 INFO L226 Difference]: Without dead ends: 60 [2021-10-11 02:30:38,637 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:30:38,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-10-11 02:30:38,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 58. [2021-10-11 02:30:38,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2021-10-11 02:30:38,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 69 transitions. [2021-10-11 02:30:38,647 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 69 transitions. Word has length 17 [2021-10-11 02:30:38,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:30:38,648 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 69 transitions. [2021-10-11 02:30:38,648 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:30:38,648 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 69 transitions. [2021-10-11 02:30:38,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-11 02:30:38,649 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:30:38,650 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:30:38,650 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-11 02:30:38,650 INFO L429 AbstractCegarLoop]: === Iteration 5 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 02:30:38,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:30:38,651 INFO L82 PathProgramCache]: Analyzing trace with hash -1650762684, now seen corresponding path program 1 times [2021-10-11 02:30:38,651 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:30:38,651 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580743723] [2021-10-11 02:30:38,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:30:38,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:30:38,701 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-11 02:30:38,701 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580743723] [2021-10-11 02:30:38,701 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:30:38,702 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:30:38,702 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217805319] [2021-10-11 02:30:38,702 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:30:38,702 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:30:38,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:30:38,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:30:38,704 INFO L87 Difference]: Start difference. First operand 58 states and 69 transitions. Second operand 5 states. [2021-10-11 02:30:38,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:30:38,747 INFO L93 Difference]: Finished difference Result 93 states and 122 transitions. [2021-10-11 02:30:38,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 02:30:38,747 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2021-10-11 02:30:38,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:30:38,749 INFO L225 Difference]: With dead ends: 93 [2021-10-11 02:30:38,749 INFO L226 Difference]: Without dead ends: 92 [2021-10-11 02:30:38,750 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:30:38,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-10-11 02:30:38,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 78. [2021-10-11 02:30:38,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2021-10-11 02:30:38,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 100 transitions. [2021-10-11 02:30:38,791 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 100 transitions. Word has length 21 [2021-10-11 02:30:38,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:30:38,791 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 100 transitions. [2021-10-11 02:30:38,791 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:30:38,791 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 100 transitions. [2021-10-11 02:30:38,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-11 02:30:38,793 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:30:38,793 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:30:38,793 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-11 02:30:38,793 INFO L429 AbstractCegarLoop]: === Iteration 6 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 02:30:38,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:30:38,794 INFO L82 PathProgramCache]: Analyzing trace with hash 365964416, now seen corresponding path program 1 times [2021-10-11 02:30:38,794 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:30:38,794 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311027979] [2021-10-11 02:30:38,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:30:38,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:30:38,846 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-11 02:30:38,846 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311027979] [2021-10-11 02:30:38,846 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:30:38,846 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:30:38,847 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409064428] [2021-10-11 02:30:38,847 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:30:38,847 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:30:38,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:30:38,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:30:38,848 INFO L87 Difference]: Start difference. First operand 78 states and 100 transitions. Second operand 5 states. [2021-10-11 02:30:38,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:30:38,907 INFO L93 Difference]: Finished difference Result 93 states and 119 transitions. [2021-10-11 02:30:38,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 02:30:38,907 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2021-10-11 02:30:38,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:30:38,909 INFO L225 Difference]: With dead ends: 93 [2021-10-11 02:30:38,909 INFO L226 Difference]: Without dead ends: 89 [2021-10-11 02:30:38,909 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:30:38,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-10-11 02:30:38,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 78. [2021-10-11 02:30:38,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2021-10-11 02:30:38,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 99 transitions. [2021-10-11 02:30:38,922 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 99 transitions. Word has length 22 [2021-10-11 02:30:38,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:30:38,922 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 99 transitions. [2021-10-11 02:30:38,922 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:30:38,922 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 99 transitions. [2021-10-11 02:30:38,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-11 02:30:38,924 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:30:38,924 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:30:38,924 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-11 02:30:38,924 INFO L429 AbstractCegarLoop]: === Iteration 7 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 02:30:38,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:30:38,925 INFO L82 PathProgramCache]: Analyzing trace with hash 1488102097, now seen corresponding path program 1 times [2021-10-11 02:30:38,925 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:30:38,925 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591611041] [2021-10-11 02:30:38,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:30:38,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:30:38,963 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-11 02:30:38,964 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591611041] [2021-10-11 02:30:38,964 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1585568714] [2021-10-11 02:30:38,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec9b4a3-1726-4127-826d-339e3fcc8360/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:30:38,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:30:39,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-11 02:30:39,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:30:39,104 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-11 02:30:39,104 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:30:39,230 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-11 02:30:39,230 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2021-10-11 02:30:39,231 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 6 [2021-10-11 02:30:39,231 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647954235] [2021-10-11 02:30:39,231 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:30:39,231 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:30:39,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:30:39,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:30:39,233 INFO L87 Difference]: Start difference. First operand 78 states and 99 transitions. Second operand 5 states. [2021-10-11 02:30:39,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:30:39,328 INFO L93 Difference]: Finished difference Result 149 states and 199 transitions. [2021-10-11 02:30:39,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:30:39,328 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2021-10-11 02:30:39,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:30:39,343 INFO L225 Difference]: With dead ends: 149 [2021-10-11 02:30:39,344 INFO L226 Difference]: Without dead ends: 78 [2021-10-11 02:30:39,346 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:30:39,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-10-11 02:30:39,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2021-10-11 02:30:39,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2021-10-11 02:30:39,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 97 transitions. [2021-10-11 02:30:39,359 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 97 transitions. Word has length 24 [2021-10-11 02:30:39,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:30:39,359 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 97 transitions. [2021-10-11 02:30:39,359 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:30:39,359 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 97 transitions. [2021-10-11 02:30:39,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-10-11 02:30:39,363 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:30:39,363 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:30:39,590 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-10-11 02:30:39,591 INFO L429 AbstractCegarLoop]: === Iteration 8 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 02:30:39,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:30:39,591 INFO L82 PathProgramCache]: Analyzing trace with hash 407346927, now seen corresponding path program 1 times [2021-10-11 02:30:39,591 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:30:39,592 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713783149] [2021-10-11 02:30:39,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:30:39,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:30:39,711 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-10-11 02:30:39,711 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713783149] [2021-10-11 02:30:39,712 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [238471633] [2021-10-11 02:30:39,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec9b4a3-1726-4127-826d-339e3fcc8360/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:30:39,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:30:39,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-11 02:30:39,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:30:39,956 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-10-11 02:30:39,956 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:30:40,291 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-10-11 02:30:40,292 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [446688524] [2021-10-11 02:30:40,316 INFO L159 IcfgInterpreter]: Started Sifa with 28 locations of interest [2021-10-11 02:30:40,316 INFO L166 IcfgInterpreter]: Building call graph [2021-10-11 02:30:40,323 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:289) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:189) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:179) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:511) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:138) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:345) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:198) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-10-11 02:30:40,324 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-11 02:30:40,324 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2021-10-11 02:30:40,325 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955093001] [2021-10-11 02:30:40,327 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-10-11 02:30:40,327 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:30:40,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-11 02:30:40,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-10-11 02:30:40,338 INFO L87 Difference]: Start difference. First operand 78 states and 97 transitions. Second operand 9 states. [2021-10-11 02:30:40,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:30:40,449 INFO L93 Difference]: Finished difference Result 115 states and 144 transitions. [2021-10-11 02:30:40,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-11 02:30:40,450 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 60 [2021-10-11 02:30:40,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:30:40,452 INFO L225 Difference]: With dead ends: 115 [2021-10-11 02:30:40,452 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:30:40,458 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 115 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-11 02:30:40,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:30:40,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:30:40,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:30:40,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:30:40,459 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 60 [2021-10-11 02:30:40,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:30:40,460 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:30:40,460 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-10-11 02:30:40,460 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:30:40,461 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:30:40,678 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:30:40,680 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-11 02:30:40,946 INFO L262 CegarLoopResult]: For program point fFINAL(lines 11 15) no Hoare annotation was computed. [2021-10-11 02:30:40,946 INFO L258 CegarLoopResult]: At program point L14(line 14) the Hoare annotation is: (or (not (<= |f_#in~x| 2147483646)) (and (<= f_~x 2147483646) (<= 1 f_~x) (<= |f_#in~x| f_~x))) [2021-10-11 02:30:40,946 INFO L262 CegarLoopResult]: For program point L13(lines 13 14) no Hoare annotation was computed. [2021-10-11 02:30:40,947 INFO L262 CegarLoopResult]: For program point L14-1(line 14) no Hoare annotation was computed. [2021-10-11 02:30:40,947 INFO L262 CegarLoopResult]: For program point L14-2(line 14) no Hoare annotation was computed. [2021-10-11 02:30:40,947 INFO L262 CegarLoopResult]: For program point L14-3(line 14) no Hoare annotation was computed. [2021-10-11 02:30:40,947 INFO L258 CegarLoopResult]: At program point L14-4(line 14) the Hoare annotation is: (or (not (<= |f_#in~x| 2147483646)) (and (<= f_~x 2147483646) (<= 1 f_~x) (<= |f_#in~x| f_~x))) [2021-10-11 02:30:40,947 INFO L262 CegarLoopResult]: For program point L14-5(line 14) no Hoare annotation was computed. [2021-10-11 02:30:40,948 INFO L262 CegarLoopResult]: For program point fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2021-10-11 02:30:40,949 INFO L262 CegarLoopResult]: For program point fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2021-10-11 02:30:40,950 INFO L262 CegarLoopResult]: For program point L14-6(line 14) no Hoare annotation was computed. [2021-10-11 02:30:40,951 INFO L262 CegarLoopResult]: For program point fEXIT(lines 11 15) no Hoare annotation was computed. [2021-10-11 02:30:40,951 INFO L262 CegarLoopResult]: For program point L14-7(line 14) no Hoare annotation was computed. [2021-10-11 02:30:40,951 INFO L265 CegarLoopResult]: At program point fENTRY(lines 11 15) the Hoare annotation is: true [2021-10-11 02:30:40,951 INFO L262 CegarLoopResult]: For program point fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2021-10-11 02:30:40,951 INFO L262 CegarLoopResult]: For program point fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2021-10-11 02:30:40,951 INFO L262 CegarLoopResult]: For program point gFINAL(lines 17 21) no Hoare annotation was computed. [2021-10-11 02:30:40,960 INFO L262 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2021-10-11 02:30:40,961 INFO L262 CegarLoopResult]: For program point L19(lines 19 20) no Hoare annotation was computed. [2021-10-11 02:30:40,961 INFO L262 CegarLoopResult]: For program point L20-1(line 20) no Hoare annotation was computed. [2021-10-11 02:30:40,962 INFO L258 CegarLoopResult]: At program point L20-2(line 20) the Hoare annotation is: (and (or (and (<= |g_#in~x| g_~x) (<= 1 g_~x) (<= g_~x 2147483647)) (not (<= |g_#in~x| 2147483647))) (or (<= g_~x 2147483646) (not (<= |g_#in~x| 2147483646)))) [2021-10-11 02:30:40,963 INFO L262 CegarLoopResult]: For program point L20-3(line 20) no Hoare annotation was computed. [2021-10-11 02:30:40,963 INFO L262 CegarLoopResult]: For program point L20-4(line 20) no Hoare annotation was computed. [2021-10-11 02:30:40,964 INFO L262 CegarLoopResult]: For program point L20-5(line 20) no Hoare annotation was computed. [2021-10-11 02:30:40,964 INFO L258 CegarLoopResult]: At program point L20-6(line 20) the Hoare annotation is: (and (or (and (<= 1 g_~x) (<= 0 |g_#t~ret2|) (<= |g_#in~x| 1) (<= |g_#t~ret2| 0)) (not (<= |g_#in~x| 2147483647))) (or (<= g_~x 2147483646) (not (<= |g_#in~x| 2147483646)))) [2021-10-11 02:30:40,964 INFO L262 CegarLoopResult]: For program point L20-7(line 20) no Hoare annotation was computed. [2021-10-11 02:30:40,964 INFO L262 CegarLoopResult]: For program point L20-8(line 20) no Hoare annotation was computed. [2021-10-11 02:30:40,966 INFO L262 CegarLoopResult]: For program point L20-9(line 20) no Hoare annotation was computed. [2021-10-11 02:30:40,968 INFO L262 CegarLoopResult]: For program point gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2021-10-11 02:30:40,968 INFO L262 CegarLoopResult]: For program point gEXIT(lines 17 21) no Hoare annotation was computed. [2021-10-11 02:30:40,968 INFO L262 CegarLoopResult]: For program point gErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2021-10-11 02:30:40,968 INFO L265 CegarLoopResult]: At program point gENTRY(lines 17 21) the Hoare annotation is: true [2021-10-11 02:30:40,969 INFO L262 CegarLoopResult]: For program point gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2021-10-11 02:30:40,969 INFO L262 CegarLoopResult]: For program point gErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2021-10-11 02:30:40,969 INFO L262 CegarLoopResult]: For program point gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2021-10-11 02:30:40,969 INFO L262 CegarLoopResult]: For program point gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2021-10-11 02:30:40,969 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-11 02:30:40,969 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-11 02:30:40,969 INFO L258 CegarLoopResult]: At program point L26(line 26) the Hoare annotation is: (<= ULTIMATE.start_main_~x~0 2147483647) [2021-10-11 02:30:40,970 INFO L262 CegarLoopResult]: For program point L26-1(line 26) no Hoare annotation was computed. [2021-10-11 02:30:40,975 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:30:40 BoogieIcfgContainer [2021-10-11 02:30:40,975 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:30:40,976 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:30:40,976 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:30:40,976 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:30:40,977 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:30:37" (3/4) ... [2021-10-11 02:30:40,982 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:30:40,988 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure f [2021-10-11 02:30:40,988 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure g [2021-10-11 02:30:40,996 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2021-10-11 02:30:40,996 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-11 02:30:40,996 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:30:41,040 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ec9b4a3-1726-4127-826d-339e3fcc8360/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:30:41,040 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:30:41,042 INFO L168 Benchmark]: Toolchain (without parser) took 4384.59 ms. Allocated memory was 94.4 MB in the beginning and 140.5 MB in the end (delta: 46.1 MB). Free memory was 54.5 MB in the beginning and 113.4 MB in the end (delta: -58.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:30:41,042 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 94.4 MB. Free memory was 70.6 MB in the beginning and 70.5 MB in the end (delta: 51.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:30:41,043 INFO L168 Benchmark]: CACSL2BoogieTranslator took 258.73 ms. Allocated memory is still 94.4 MB. Free memory was 54.3 MB in the beginning and 71.6 MB in the end (delta: -17.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-11 02:30:41,043 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.09 ms. Allocated memory is still 94.4 MB. Free memory was 71.6 MB in the beginning and 70.3 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:30:41,044 INFO L168 Benchmark]: Boogie Preprocessor took 19.96 ms. Allocated memory is still 94.4 MB. Free memory was 70.3 MB in the beginning and 69.3 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:30:41,044 INFO L168 Benchmark]: RCFGBuilder took 388.94 ms. Allocated memory is still 94.4 MB. Free memory was 69.3 MB in the beginning and 56.2 MB in the end (delta: 13.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-11 02:30:41,045 INFO L168 Benchmark]: TraceAbstraction took 3609.13 ms. Allocated memory was 94.4 MB in the beginning and 140.5 MB in the end (delta: 46.1 MB). Free memory was 55.6 MB in the beginning and 115.5 MB in the end (delta: -59.9 MB). Peak memory consumption was 45.3 MB. Max. memory is 16.1 GB. [2021-10-11 02:30:41,046 INFO L168 Benchmark]: Witness Printer took 64.23 ms. Allocated memory is still 140.5 MB. Free memory was 115.5 MB in the beginning and 113.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:30:41,048 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 94.4 MB. Free memory was 70.6 MB in the beginning and 70.5 MB in the end (delta: 51.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 258.73 ms. Allocated memory is still 94.4 MB. Free memory was 54.3 MB in the beginning and 71.6 MB in the end (delta: -17.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 31.09 ms. Allocated memory is still 94.4 MB. Free memory was 71.6 MB in the beginning and 70.3 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 19.96 ms. Allocated memory is still 94.4 MB. Free memory was 70.3 MB in the beginning and 69.3 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 388.94 ms. Allocated memory is still 94.4 MB. Free memory was 69.3 MB in the beginning and 56.2 MB in the end (delta: 13.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3609.13 ms. Allocated memory was 94.4 MB in the beginning and 140.5 MB in the end (delta: 46.1 MB). Free memory was 55.6 MB in the beginning and 115.5 MB in the end (delta: -59.9 MB). Peak memory consumption was 45.3 MB. Max. memory is 16.1 GB. * Witness Printer took 64.23 ms. Allocated memory is still 140.5 MB. Free memory was 115.5 MB in the beginning and 113.4 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: 14]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 14]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 14]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 14]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 10 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 40 locations, 10 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.2s, OverallIterations: 8, TraceHistogramMax: 5, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 249 SDtfs, 184 SDslu, 556 SDs, 0 SdLazy, 344 SolverSat, 40 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 211 GetRequests, 165 SyntacticMatches, 6 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=78occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 39 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 82 PreInvPairs, 91 NumberOfFragments, 86 HoareAnnotationTreeSize, 82 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 47 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 252 NumberOfCodeBlocks, 252 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 324 ConstructedInterpolants, 0 QuantifiedInterpolants, 24106 SizeOfPredicates, 7 NumberOfNonLiveVariables, 174 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 12 InterpolantComputations, 7 PerfectInterpolantSequences, 190/205 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...