./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted/NestedRecursion_1c.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_7d7f4173-c2ac-4c71-8e8f-8f0dee3dab78/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_7d7f4173-c2ac-4c71-8e8f-8f0dee3dab78/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_7d7f4173-c2ac-4c71-8e8f-8f0dee3dab78/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_7d7f4173-c2ac-4c71-8e8f-8f0dee3dab78/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted/NestedRecursion_1c.c -s /tmp/vcloud-vcloud-master/worker/run_dir_7d7f4173-c2ac-4c71-8e8f-8f0dee3dab78/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_7d7f4173-c2ac-4c71-8e8f-8f0dee3dab78/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 1b5ce1e17bce3e34a2c882b1080bdbc1a62cb801 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 19:43:20,750 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 19:43:20,752 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 19:43:20,783 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 19:43:20,784 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 19:43:20,784 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 19:43:20,786 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 19:43:20,788 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 19:43:20,789 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 19:43:20,790 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 19:43:20,791 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 19:43:20,792 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 19:43:20,793 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 19:43:20,793 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 19:43:20,794 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 19:43:20,796 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 19:43:20,796 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 19:43:20,797 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 19:43:20,799 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 19:43:20,800 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 19:43:20,802 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 19:43:20,803 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 19:43:20,804 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 19:43:20,805 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 19:43:20,807 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 19:43:20,807 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 19:43:20,808 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 19:43:20,809 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 19:43:20,809 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 19:43:20,810 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 19:43:20,810 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 19:43:20,811 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 19:43:20,811 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 19:43:20,812 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 19:43:20,813 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 19:43:20,813 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 19:43:20,813 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 19:43:20,813 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 19:43:20,814 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 19:43:20,814 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 19:43:20,815 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 19:43:20,815 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_7d7f4173-c2ac-4c71-8e8f-8f0dee3dab78/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf [2020-12-09 19:43:20,831 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 19:43:20,831 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 19:43:20,832 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 19:43:20,832 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 19:43:20,832 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 19:43:20,832 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 19:43:20,832 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 19:43:20,832 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 19:43:20,833 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 19:43:20,833 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 19:43:20,833 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 19:43:20,833 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 19:43:20,833 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 19:43:20,833 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 19:43:20,833 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 19:43:20,834 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 19:43:20,834 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-09 19:43:20,834 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 19:43:20,834 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 19:43:20,834 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 19:43:20,834 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 19:43:20,834 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 19:43:20,834 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-12-09 19:43:20,835 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 19:43:20,835 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 19:43:20,835 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 19:43:20,835 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 19:43:20,835 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 19:43:20,835 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 19:43:20,835 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 19:43:20,835 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 19:43:20,835 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 19:43:20,836 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 19:43:20,836 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 19:43:20,836 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 19:43:20,836 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 19:43:20,836 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 19:43:20,836 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_7d7f4173-c2ac-4c71-8e8f-8f0dee3dab78/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_7d7f4173-c2ac-4c71-8e8f-8f0dee3dab78/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1b5ce1e17bce3e34a2c882b1080bdbc1a62cb801 [2020-12-09 19:43:21,019 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 19:43:21,040 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 19:43:21,042 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 19:43:21,043 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 19:43:21,043 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 19:43:21,044 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_7d7f4173-c2ac-4c71-8e8f-8f0dee3dab78/bin/utaipan/../../sv-benchmarks/c/termination-crafted/NestedRecursion_1c.c [2020-12-09 19:43:21,086 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7d7f4173-c2ac-4c71-8e8f-8f0dee3dab78/bin/utaipan/data/dbac9fe3e/d66a0545388a499d89b42aa55ae7b2c1/FLAG3f940b509 [2020-12-09 19:43:21,454 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 19:43:21,454 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_7d7f4173-c2ac-4c71-8e8f-8f0dee3dab78/sv-benchmarks/c/termination-crafted/NestedRecursion_1c.c [2020-12-09 19:43:21,458 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7d7f4173-c2ac-4c71-8e8f-8f0dee3dab78/bin/utaipan/data/dbac9fe3e/d66a0545388a499d89b42aa55ae7b2c1/FLAG3f940b509 [2020-12-09 19:43:21,467 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_7d7f4173-c2ac-4c71-8e8f-8f0dee3dab78/bin/utaipan/data/dbac9fe3e/d66a0545388a499d89b42aa55ae7b2c1 [2020-12-09 19:43:21,469 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 19:43:21,470 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 19:43:21,471 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 19:43:21,471 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 19:43:21,474 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 19:43:21,475 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:43:21" (1/1) ... [2020-12-09 19:43:21,477 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f7b0354 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:43:21, skipping insertion in model container [2020-12-09 19:43:21,477 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:43:21" (1/1) ... [2020-12-09 19:43:21,484 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 19:43:21,495 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 19:43:21,597 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 19:43:21,599 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 19:43:21,613 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 19:43:21,625 INFO L208 MainTranslator]: Completed translation [2020-12-09 19:43:21,625 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:43:21 WrapperNode [2020-12-09 19:43:21,625 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 19:43:21,627 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 19:43:21,627 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 19:43:21,627 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 19:43:21,633 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:43:21" (1/1) ... [2020-12-09 19:43:21,636 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:43:21" (1/1) ... [2020-12-09 19:43:21,648 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 19:43:21,648 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 19:43:21,648 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 19:43:21,649 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 19:43:21,655 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:43:21" (1/1) ... [2020-12-09 19:43:21,655 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:43:21" (1/1) ... [2020-12-09 19:43:21,656 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:43:21" (1/1) ... [2020-12-09 19:43:21,656 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:43:21" (1/1) ... [2020-12-09 19:43:21,658 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:43:21" (1/1) ... [2020-12-09 19:43:21,659 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:43:21" (1/1) ... [2020-12-09 19:43:21,660 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:43:21" (1/1) ... [2020-12-09 19:43:21,661 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 19:43:21,661 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 19:43:21,661 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 19:43:21,661 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 19:43:21,662 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:43:21" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7d7f4173-c2ac-4c71-8e8f-8f0dee3dab78/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 [2020-12-09 19:43:21,719 INFO L130 BoogieDeclarations]: Found specification of procedure rec1 [2020-12-09 19:43:21,719 INFO L138 BoogieDeclarations]: Found implementation of procedure rec1 [2020-12-09 19:43:21,719 INFO L130 BoogieDeclarations]: Found specification of procedure rec2 [2020-12-09 19:43:21,720 INFO L138 BoogieDeclarations]: Found implementation of procedure rec2 [2020-12-09 19:43:21,720 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 19:43:21,720 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 19:43:21,892 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 19:43:21,892 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-09 19:43:21,894 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:43:21 BoogieIcfgContainer [2020-12-09 19:43:21,894 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 19:43:21,895 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 19:43:21,895 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 19:43:21,897 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 19:43:21,898 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 07:43:21" (1/3) ... [2020-12-09 19:43:21,898 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f74cb52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:43:21, skipping insertion in model container [2020-12-09 19:43:21,898 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:43:21" (2/3) ... [2020-12-09 19:43:21,899 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f74cb52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:43:21, skipping insertion in model container [2020-12-09 19:43:21,899 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:43:21" (3/3) ... [2020-12-09 19:43:21,900 INFO L111 eAbstractionObserver]: Analyzing ICFG NestedRecursion_1c.c [2020-12-09 19:43:21,909 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 19:43:21,911 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 10 error locations. [2020-12-09 19:43:21,919 INFO L253 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2020-12-09 19:43:21,935 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 19:43:21,935 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 19:43:21,935 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 19:43:21,935 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 19:43:21,936 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 19:43:21,936 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 19:43:21,936 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 19:43:21,936 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 19:43:21,948 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2020-12-09 19:43:21,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-09 19:43:21,951 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:43:21,951 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-09 19:43:21,952 INFO L429 AbstractCegarLoop]: === Iteration 1 === [rec1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 19:43:21,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:43:21,956 INFO L82 PathProgramCache]: Analyzing trace with hash 70122184, now seen corresponding path program 1 times [2020-12-09 19:43:21,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:43:21,962 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344518844] [2020-12-09 19:43:21,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:43:22,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:43:22,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 19:43:22,066 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344518844] [2020-12-09 19:43:22,066 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 19:43:22,066 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 19:43:22,067 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306737821] [2020-12-09 19:43:22,070 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 19:43:22,070 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 19:43:22,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 19:43:22,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 19:43:22,082 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 5 states. [2020-12-09 19:43:22,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:43:22,152 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2020-12-09 19:43:22,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 19:43:22,154 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 5 [2020-12-09 19:43:22,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:43:22,163 INFO L225 Difference]: With dead ends: 42 [2020-12-09 19:43:22,163 INFO L226 Difference]: Without dead ends: 39 [2020-12-09 19:43:22,166 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 [2020-12-09 19:43:22,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-12-09 19:43:22,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-12-09 19:43:22,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-12-09 19:43:22,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 44 transitions. [2020-12-09 19:43:22,210 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 44 transitions. Word has length 5 [2020-12-09 19:43:22,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:43:22,211 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 44 transitions. [2020-12-09 19:43:22,211 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 19:43:22,211 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 44 transitions. [2020-12-09 19:43:22,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-09 19:43:22,211 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:43:22,211 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-09 19:43:22,212 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 19:43:22,212 INFO L429 AbstractCegarLoop]: === Iteration 2 === [rec1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 19:43:22,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:43:22,213 INFO L82 PathProgramCache]: Analyzing trace with hash -2121179530, now seen corresponding path program 1 times [2020-12-09 19:43:22,213 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:43:22,214 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271371303] [2020-12-09 19:43:22,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:43:22,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:43:22,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 19:43:22,233 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271371303] [2020-12-09 19:43:22,233 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 19:43:22,233 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 19:43:22,233 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265801426] [2020-12-09 19:43:22,234 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 19:43:22,235 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 19:43:22,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 19:43:22,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 19:43:22,236 INFO L87 Difference]: Start difference. First operand 39 states and 44 transitions. Second operand 3 states. [2020-12-09 19:43:22,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:43:22,250 INFO L93 Difference]: Finished difference Result 41 states and 46 transitions. [2020-12-09 19:43:22,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 19:43:22,251 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-12-09 19:43:22,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:43:22,253 INFO L225 Difference]: With dead ends: 41 [2020-12-09 19:43:22,253 INFO L226 Difference]: Without dead ends: 40 [2020-12-09 19:43:22,254 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 [2020-12-09 19:43:22,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-12-09 19:43:22,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 38. [2020-12-09 19:43:22,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-12-09 19:43:22,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2020-12-09 19:43:22,264 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 6 [2020-12-09 19:43:22,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:43:22,264 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2020-12-09 19:43:22,264 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 19:43:22,265 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2020-12-09 19:43:22,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-09 19:43:22,265 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:43:22,265 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 19:43:22,265 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 19:43:22,266 INFO L429 AbstractCegarLoop]: === Iteration 3 === [rec1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 19:43:22,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:43:22,266 INFO L82 PathProgramCache]: Analyzing trace with hash -509849608, now seen corresponding path program 1 times [2020-12-09 19:43:22,267 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:43:22,267 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195608184] [2020-12-09 19:43:22,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:43:22,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:43:22,313 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-09 19:43:22,314 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195608184] [2020-12-09 19:43:22,314 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 19:43:22,314 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 19:43:22,314 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858969783] [2020-12-09 19:43:22,315 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 19:43:22,315 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 19:43:22,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 19:43:22,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-09 19:43:22,316 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand 6 states. [2020-12-09 19:43:22,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:43:22,367 INFO L93 Difference]: Finished difference Result 84 states and 98 transitions. [2020-12-09 19:43:22,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 19:43:22,368 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-12-09 19:43:22,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:43:22,369 INFO L225 Difference]: With dead ends: 84 [2020-12-09 19:43:22,369 INFO L226 Difference]: Without dead ends: 53 [2020-12-09 19:43:22,375 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-12-09 19:43:22,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-12-09 19:43:22,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 46. [2020-12-09 19:43:22,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-12-09 19:43:22,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 51 transitions. [2020-12-09 19:43:22,387 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 51 transitions. Word has length 16 [2020-12-09 19:43:22,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:43:22,387 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 51 transitions. [2020-12-09 19:43:22,387 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 19:43:22,387 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 51 transitions. [2020-12-09 19:43:22,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-09 19:43:22,388 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:43:22,389 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 19:43:22,389 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-09 19:43:22,389 INFO L429 AbstractCegarLoop]: === Iteration 4 === [rec1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 19:43:22,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:43:22,390 INFO L82 PathProgramCache]: Analyzing trace with hash -786790687, now seen corresponding path program 1 times [2020-12-09 19:43:22,390 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:43:22,390 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85392633] [2020-12-09 19:43:22,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:43:22,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:43:22,422 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-09 19:43:22,423 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85392633] [2020-12-09 19:43:22,423 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 19:43:22,423 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 19:43:22,423 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983990460] [2020-12-09 19:43:22,424 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 19:43:22,424 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 19:43:22,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 19:43:22,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 19:43:22,425 INFO L87 Difference]: Start difference. First operand 46 states and 51 transitions. Second operand 3 states. [2020-12-09 19:43:22,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:43:22,434 INFO L93 Difference]: Finished difference Result 46 states and 51 transitions. [2020-12-09 19:43:22,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 19:43:22,435 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-12-09 19:43:22,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:43:22,436 INFO L225 Difference]: With dead ends: 46 [2020-12-09 19:43:22,436 INFO L226 Difference]: Without dead ends: 45 [2020-12-09 19:43:22,437 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 [2020-12-09 19:43:22,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-12-09 19:43:22,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-12-09 19:43:22,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-12-09 19:43:22,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 50 transitions. [2020-12-09 19:43:22,445 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 50 transitions. Word has length 24 [2020-12-09 19:43:22,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:43:22,445 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 50 transitions. [2020-12-09 19:43:22,446 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 19:43:22,446 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 50 transitions. [2020-12-09 19:43:22,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-09 19:43:22,447 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:43:22,447 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 19:43:22,447 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-09 19:43:22,447 INFO L429 AbstractCegarLoop]: === Iteration 5 === [rec1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 19:43:22,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:43:22,448 INFO L82 PathProgramCache]: Analyzing trace with hash 1379292549, now seen corresponding path program 1 times [2020-12-09 19:43:22,449 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:43:22,449 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114563898] [2020-12-09 19:43:22,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:43:22,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:43:22,482 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-09 19:43:22,483 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114563898] [2020-12-09 19:43:22,483 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 19:43:22,483 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 19:43:22,483 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088144166] [2020-12-09 19:43:22,484 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 19:43:22,484 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 19:43:22,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 19:43:22,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 19:43:22,485 INFO L87 Difference]: Start difference. First operand 45 states and 50 transitions. Second operand 4 states. [2020-12-09 19:43:22,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:43:22,502 INFO L93 Difference]: Finished difference Result 51 states and 59 transitions. [2020-12-09 19:43:22,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 19:43:22,502 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-12-09 19:43:22,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:43:22,503 INFO L225 Difference]: With dead ends: 51 [2020-12-09 19:43:22,504 INFO L226 Difference]: Without dead ends: 50 [2020-12-09 19:43:22,504 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 19:43:22,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-12-09 19:43:22,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-12-09 19:43:22,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-12-09 19:43:22,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 58 transitions. [2020-12-09 19:43:22,512 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 58 transitions. Word has length 25 [2020-12-09 19:43:22,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:43:22,512 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 58 transitions. [2020-12-09 19:43:22,512 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 19:43:22,512 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 58 transitions. [2020-12-09 19:43:22,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-09 19:43:22,513 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:43:22,513 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 19:43:22,513 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-09 19:43:22,514 INFO L429 AbstractCegarLoop]: === Iteration 6 === [rec1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 19:43:22,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:43:22,514 INFO L82 PathProgramCache]: Analyzing trace with hash -483037003, now seen corresponding path program 1 times [2020-12-09 19:43:22,514 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:43:22,514 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300809701] [2020-12-09 19:43:22,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:43:22,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:43:22,573 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-09 19:43:22,573 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300809701] [2020-12-09 19:43:22,574 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 19:43:22,574 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-09 19:43:22,574 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800620570] [2020-12-09 19:43:22,574 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-09 19:43:22,574 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 19:43:22,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-09 19:43:22,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-12-09 19:43:22,575 INFO L87 Difference]: Start difference. First operand 50 states and 58 transitions. Second operand 8 states. [2020-12-09 19:43:22,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:43:22,625 INFO L93 Difference]: Finished difference Result 64 states and 74 transitions. [2020-12-09 19:43:22,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-09 19:43:22,626 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2020-12-09 19:43:22,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:43:22,626 INFO L225 Difference]: With dead ends: 64 [2020-12-09 19:43:22,626 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 19:43:22,627 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-12-09 19:43:22,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 19:43:22,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 19:43:22,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 19:43:22,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 19:43:22,628 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 32 [2020-12-09 19:43:22,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:43:22,628 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 19:43:22,628 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-09 19:43:22,628 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 19:43:22,628 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 19:43:22,629 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-09 19:43:22,630 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-09 19:43:22,705 INFO L262 CegarLoopResult]: For program point rec1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2020-12-09 19:43:22,705 INFO L262 CegarLoopResult]: For program point rec1FINAL(lines 11 15) no Hoare annotation was computed. [2020-12-09 19:43:22,705 INFO L262 CegarLoopResult]: For program point rec1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2020-12-09 19:43:22,705 INFO L262 CegarLoopResult]: For program point rec1EXIT(lines 11 15) no Hoare annotation was computed. [2020-12-09 19:43:22,705 INFO L262 CegarLoopResult]: For program point L14(line 14) no Hoare annotation was computed. [2020-12-09 19:43:22,706 INFO L265 CegarLoopResult]: At program point rec1ENTRY(lines 11 15) the Hoare annotation is: true [2020-12-09 19:43:22,706 INFO L262 CegarLoopResult]: For program point L14-1(line 14) no Hoare annotation was computed. [2020-12-09 19:43:22,706 INFO L262 CegarLoopResult]: For program point L12(lines 12 13) no Hoare annotation was computed. [2020-12-09 19:43:22,706 INFO L258 CegarLoopResult]: At program point L14-2(line 14) the Hoare annotation is: (not (<= |rec1_#in~i| 0)) [2020-12-09 19:43:22,706 INFO L262 CegarLoopResult]: For program point L14-3(line 14) no Hoare annotation was computed. [2020-12-09 19:43:22,706 INFO L262 CegarLoopResult]: For program point L14-4(line 14) no Hoare annotation was computed. [2020-12-09 19:43:22,706 INFO L262 CegarLoopResult]: For program point rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2020-12-09 19:43:22,706 INFO L262 CegarLoopResult]: For program point L14-5(line 14) no Hoare annotation was computed. [2020-12-09 19:43:22,706 INFO L258 CegarLoopResult]: At program point L14-6(line 14) the Hoare annotation is: (not (<= |rec1_#in~i| 0)) [2020-12-09 19:43:22,706 INFO L262 CegarLoopResult]: For program point rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2020-12-09 19:43:22,706 INFO L262 CegarLoopResult]: For program point rec1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2020-12-09 19:43:22,707 INFO L262 CegarLoopResult]: For program point L14-7(line 14) no Hoare annotation was computed. [2020-12-09 19:43:22,707 INFO L262 CegarLoopResult]: For program point rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2020-12-09 19:43:22,707 INFO L258 CegarLoopResult]: At program point L14-8(line 14) the Hoare annotation is: (not (<= |rec1_#in~i| 0)) [2020-12-09 19:43:22,707 INFO L262 CegarLoopResult]: For program point L14-9(line 14) no Hoare annotation was computed. [2020-12-09 19:43:22,707 INFO L262 CegarLoopResult]: For program point L14-10(line 14) no Hoare annotation was computed. [2020-12-09 19:43:22,707 INFO L262 CegarLoopResult]: For program point L14-11(line 14) no Hoare annotation was computed. [2020-12-09 19:43:22,707 INFO L262 CegarLoopResult]: For program point rec2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2020-12-09 19:43:22,707 INFO L262 CegarLoopResult]: For program point rec2FINAL(lines 17 21) no Hoare annotation was computed. [2020-12-09 19:43:22,707 INFO L262 CegarLoopResult]: For program point rec2EXIT(lines 17 21) no Hoare annotation was computed. [2020-12-09 19:43:22,707 INFO L262 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2020-12-09 19:43:22,707 INFO L262 CegarLoopResult]: For program point L20-1(line 20) no Hoare annotation was computed. [2020-12-09 19:43:22,708 INFO L262 CegarLoopResult]: For program point L18(lines 18 19) no Hoare annotation was computed. [2020-12-09 19:43:22,708 INFO L258 CegarLoopResult]: At program point L20-2(line 20) the Hoare annotation is: (or (not (<= |rec2_#in~j| 2147483647)) (and (<= rec2_~j 2147483647) (<= 1 rec2_~j))) [2020-12-09 19:43:22,708 INFO L262 CegarLoopResult]: For program point L20-3(line 20) no Hoare annotation was computed. [2020-12-09 19:43:22,708 INFO L258 CegarLoopResult]: At program point L20-4(line 20) the Hoare annotation is: (or (not (<= |rec2_#in~j| 2147483647)) (and (<= rec2_~j 2147483647) (<= 1 rec2_~j) (<= |rec2_#t~ret3| 0))) [2020-12-09 19:43:22,708 INFO L262 CegarLoopResult]: For program point L20-5(line 20) no Hoare annotation was computed. [2020-12-09 19:43:22,708 INFO L262 CegarLoopResult]: For program point L20-6(line 20) no Hoare annotation was computed. [2020-12-09 19:43:22,708 INFO L262 CegarLoopResult]: For program point L20-7(line 20) no Hoare annotation was computed. [2020-12-09 19:43:22,708 INFO L265 CegarLoopResult]: At program point rec2ENTRY(lines 17 21) the Hoare annotation is: true [2020-12-09 19:43:22,708 INFO L262 CegarLoopResult]: For program point rec2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2020-12-09 19:43:22,708 INFO L262 CegarLoopResult]: For program point rec2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2020-12-09 19:43:22,709 INFO L262 CegarLoopResult]: For program point rec2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2020-12-09 19:43:22,709 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-09 19:43:22,709 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-09 19:43:22,709 INFO L258 CegarLoopResult]: At program point L25(line 25) the Hoare annotation is: (<= ULTIMATE.start_main_~x~0 2147483647) [2020-12-09 19:43:22,709 INFO L262 CegarLoopResult]: For program point L25-1(line 25) no Hoare annotation was computed. [2020-12-09 19:43:22,712 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 07:43:22 BoogieIcfgContainer [2020-12-09 19:43:22,713 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 19:43:22,713 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 19:43:22,713 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 19:43:22,713 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 19:43:22,714 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:43:21" (3/4) ... [2020-12-09 19:43:22,716 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 19:43:22,720 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure rec1 [2020-12-09 19:43:22,720 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure rec2 [2020-12-09 19:43:22,723 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2020-12-09 19:43:22,724 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-12-09 19:43:22,724 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 19:43:22,764 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_7d7f4173-c2ac-4c71-8e8f-8f0dee3dab78/bin/utaipan/witness.graphml [2020-12-09 19:43:22,764 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 19:43:22,766 INFO L168 Benchmark]: Toolchain (without parser) took 1295.10 ms. Allocated memory was 98.6 MB in the beginning and 119.5 MB in the end (delta: 21.0 MB). Free memory was 76.8 MB in the beginning and 88.5 MB in the end (delta: -11.7 MB). Peak memory consumption was 8.8 MB. Max. memory is 16.1 GB. [2020-12-09 19:43:22,767 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 69.2 MB. Free memory was 44.3 MB in the beginning and 44.2 MB in the end (delta: 67.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 19:43:22,767 INFO L168 Benchmark]: CACSL2BoogieTranslator took 154.82 ms. Allocated memory is still 98.6 MB. Free memory was 76.8 MB in the beginning and 68.4 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-09 19:43:22,768 INFO L168 Benchmark]: Boogie Procedure Inliner took 21.27 ms. Allocated memory is still 98.6 MB. Free memory was 68.1 MB in the beginning and 67.0 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 19:43:22,768 INFO L168 Benchmark]: Boogie Preprocessor took 12.36 ms. Allocated memory is still 98.6 MB. Free memory was 67.0 MB in the beginning and 66.0 MB in the end (delta: 998.0 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 19:43:22,768 INFO L168 Benchmark]: RCFGBuilder took 232.84 ms. Allocated memory is still 98.6 MB. Free memory was 66.0 MB in the beginning and 70.9 MB in the end (delta: -4.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-09 19:43:22,769 INFO L168 Benchmark]: TraceAbstraction took 817.51 ms. Allocated memory was 98.6 MB in the beginning and 119.5 MB in the end (delta: 21.0 MB). Free memory was 70.2 MB in the beginning and 91.8 MB in the end (delta: -21.6 MB). Peak memory consumption was 40.9 MB. Max. memory is 16.1 GB. [2020-12-09 19:43:22,769 INFO L168 Benchmark]: Witness Printer took 51.49 ms. Allocated memory is still 119.5 MB. Free memory was 91.8 MB in the beginning and 88.5 MB in the end (delta: 3.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-09 19:43:22,772 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 69.2 MB. Free memory was 44.3 MB in the beginning and 44.2 MB in the end (delta: 67.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 154.82 ms. Allocated memory is still 98.6 MB. Free memory was 76.8 MB in the beginning and 68.4 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 21.27 ms. Allocated memory is still 98.6 MB. Free memory was 68.1 MB in the beginning and 67.0 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 12.36 ms. Allocated memory is still 98.6 MB. Free memory was 67.0 MB in the beginning and 66.0 MB in the end (delta: 998.0 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 232.84 ms. Allocated memory is still 98.6 MB. Free memory was 66.0 MB in the beginning and 70.9 MB in the end (delta: -4.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 817.51 ms. Allocated memory was 98.6 MB in the beginning and 119.5 MB in the end (delta: 21.0 MB). Free memory was 70.2 MB in the beginning and 91.8 MB in the end (delta: -21.6 MB). Peak memory consumption was 40.9 MB. Max. memory is 16.1 GB. * Witness Printer took 51.49 ms. Allocated memory is still 119.5 MB. Free memory was 91.8 MB in the beginning and 88.5 MB in the end (delta: 3.3 MB). Peak memory consumption was 4.2 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: 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 - AllSpecificationsHoldResult: All specifications hold 10 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 42 locations, 10 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.6s, OverallIterations: 6, TraceHistogramMax: 3, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 219 SDtfs, 52 SDslu, 489 SDs, 0 SdLazy, 125 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=50occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 9 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 47 PreInvPairs, 51 NumberOfFragments, 44 HoareAnnotationTreeSize, 47 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 42 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 108 NumberOfCodeBlocks, 108 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 102 ConstructedInterpolants, 0 QuantifiedInterpolants, 4058 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 35/35 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...