./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 f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_822d1b73-6bc2-4b4e-beb4-09582f357eda/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_822d1b73-6bc2-4b4e-beb4-09582f357eda/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_822d1b73-6bc2-4b4e-beb4-09582f357eda/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_822d1b73-6bc2-4b4e-beb4-09582f357eda/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted/NestedRecursion_1c.c -s /tmp/vcloud-vcloud-master/worker/run_dir_822d1b73-6bc2-4b4e-beb4-09582f357eda/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_822d1b73-6bc2-4b4e-beb4-09582f357eda/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 0.1.25-f470102 [2019-12-07 16:12:08,689 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 16:12:08,690 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 16:12:08,697 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 16:12:08,697 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 16:12:08,698 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 16:12:08,699 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 16:12:08,700 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 16:12:08,701 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 16:12:08,702 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 16:12:08,703 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 16:12:08,703 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 16:12:08,704 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 16:12:08,704 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 16:12:08,705 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 16:12:08,706 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 16:12:08,706 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 16:12:08,707 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 16:12:08,708 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 16:12:08,709 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 16:12:08,710 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 16:12:08,711 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 16:12:08,712 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 16:12:08,712 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 16:12:08,714 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 16:12:08,714 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 16:12:08,714 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 16:12:08,715 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 16:12:08,715 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 16:12:08,716 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 16:12:08,716 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 16:12:08,716 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 16:12:08,716 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 16:12:08,717 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 16:12:08,717 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 16:12:08,718 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 16:12:08,718 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 16:12:08,718 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 16:12:08,718 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 16:12:08,719 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 16:12:08,719 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 16:12:08,720 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_822d1b73-6bc2-4b4e-beb4-09582f357eda/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf [2019-12-07 16:12:08,730 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 16:12:08,730 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 16:12:08,730 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 16:12:08,730 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 16:12:08,731 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 16:12:08,731 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 16:12:08,731 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-12-07 16:12:08,731 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 16:12:08,731 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 16:12:08,731 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-12-07 16:12:08,731 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-12-07 16:12:08,731 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 16:12:08,732 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-12-07 16:12:08,732 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-12-07 16:12:08,732 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-12-07 16:12:08,732 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 16:12:08,732 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-12-07 16:12:08,733 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 16:12:08,733 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 16:12:08,733 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 16:12:08,733 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 16:12:08,733 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 16:12:08,733 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-12-07 16:12:08,733 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 16:12:08,733 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 16:12:08,733 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 16:12:08,734 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 16:12:08,734 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 16:12:08,734 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 16:12:08,734 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 16:12:08,734 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 16:12:08,734 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 16:12:08,734 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 16:12:08,734 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-12-07 16:12:08,734 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 16:12:08,735 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 16:12:08,735 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 16:12:08,735 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 16:12:08,735 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_822d1b73-6bc2-4b4e-beb4-09582f357eda/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 [2019-12-07 16:12:08,842 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 16:12:08,850 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 16:12:08,852 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 16:12:08,853 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 16:12:08,853 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 16:12:08,853 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_822d1b73-6bc2-4b4e-beb4-09582f357eda/bin/utaipan/../../sv-benchmarks/c/termination-crafted/NestedRecursion_1c.c [2019-12-07 16:12:08,891 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_822d1b73-6bc2-4b4e-beb4-09582f357eda/bin/utaipan/data/7f5c49588/758cf18e17b542ad8b9c9bbfc70d0a9e/FLAGc257e0e84 [2019-12-07 16:12:09,257 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 16:12:09,258 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_822d1b73-6bc2-4b4e-beb4-09582f357eda/sv-benchmarks/c/termination-crafted/NestedRecursion_1c.c [2019-12-07 16:12:09,261 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_822d1b73-6bc2-4b4e-beb4-09582f357eda/bin/utaipan/data/7f5c49588/758cf18e17b542ad8b9c9bbfc70d0a9e/FLAGc257e0e84 [2019-12-07 16:12:09,270 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_822d1b73-6bc2-4b4e-beb4-09582f357eda/bin/utaipan/data/7f5c49588/758cf18e17b542ad8b9c9bbfc70d0a9e [2019-12-07 16:12:09,272 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 16:12:09,272 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 16:12:09,273 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 16:12:09,273 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 16:12:09,275 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 16:12:09,275 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 04:12:09" (1/1) ... [2019-12-07 16:12:09,277 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@feb3f24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:12:09, skipping insertion in model container [2019-12-07 16:12:09,277 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 04:12:09" (1/1) ... [2019-12-07 16:12:09,282 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 16:12:09,294 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 16:12:09,400 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 16:12:09,403 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 16:12:09,447 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 16:12:09,456 INFO L208 MainTranslator]: Completed translation [2019-12-07 16:12:09,456 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:12:09 WrapperNode [2019-12-07 16:12:09,456 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 16:12:09,457 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 16:12:09,457 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 16:12:09,457 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 16:12:09,462 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:12:09" (1/1) ... [2019-12-07 16:12:09,466 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:12:09" (1/1) ... [2019-12-07 16:12:09,476 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 16:12:09,477 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 16:12:09,477 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 16:12:09,477 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 16:12:09,483 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:12:09" (1/1) ... [2019-12-07 16:12:09,483 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:12:09" (1/1) ... [2019-12-07 16:12:09,484 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:12:09" (1/1) ... [2019-12-07 16:12:09,484 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:12:09" (1/1) ... [2019-12-07 16:12:09,485 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:12:09" (1/1) ... [2019-12-07 16:12:09,487 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:12:09" (1/1) ... [2019-12-07 16:12:09,487 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:12:09" (1/1) ... [2019-12-07 16:12:09,488 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 16:12:09,488 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 16:12:09,488 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 16:12:09,489 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 16:12:09,489 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:12:09" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_822d1b73-6bc2-4b4e-beb4-09582f357eda/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 [2019-12-07 16:12:09,529 INFO L130 BoogieDeclarations]: Found specification of procedure rec1 [2019-12-07 16:12:09,529 INFO L138 BoogieDeclarations]: Found implementation of procedure rec1 [2019-12-07 16:12:09,529 INFO L130 BoogieDeclarations]: Found specification of procedure rec2 [2019-12-07 16:12:09,529 INFO L138 BoogieDeclarations]: Found implementation of procedure rec2 [2019-12-07 16:12:09,529 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 16:12:09,529 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 16:12:09,659 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 16:12:09,659 INFO L287 CfgBuilder]: Removed 4 assume(true) statements. [2019-12-07 16:12:09,660 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 04:12:09 BoogieIcfgContainer [2019-12-07 16:12:09,660 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 16:12:09,660 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 16:12:09,661 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 16:12:09,662 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 16:12:09,663 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 04:12:09" (1/3) ... [2019-12-07 16:12:09,663 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@687e3bbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 04:12:09, skipping insertion in model container [2019-12-07 16:12:09,663 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:12:09" (2/3) ... [2019-12-07 16:12:09,664 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@687e3bbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 04:12:09, skipping insertion in model container [2019-12-07 16:12:09,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 04:12:09" (3/3) ... [2019-12-07 16:12:09,665 INFO L109 eAbstractionObserver]: Analyzing ICFG NestedRecursion_1c.c [2019-12-07 16:12:09,671 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 16:12:09,675 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 10 error locations. [2019-12-07 16:12:09,682 INFO L249 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2019-12-07 16:12:09,697 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 16:12:09,697 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 16:12:09,697 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 16:12:09,697 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 16:12:09,698 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 16:12:09,698 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 16:12:09,698 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 16:12:09,698 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 16:12:09,710 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2019-12-07 16:12:09,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-12-07 16:12:09,714 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 16:12:09,714 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-12-07 16:12:09,715 INFO L410 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]=== [2019-12-07 16:12:09,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:12:09,719 INFO L82 PathProgramCache]: Analyzing trace with hash 70122184, now seen corresponding path program 1 times [2019-12-07 16:12:09,725 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 16:12:09,725 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059464148] [2019-12-07 16:12:09,725 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 16:12:09,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:12:09,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 16:12:09,823 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059464148] [2019-12-07 16:12:09,823 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 16:12:09,824 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 16:12:09,825 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149953426] [2019-12-07 16:12:09,828 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 16:12:09,828 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 16:12:09,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 16:12:09,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-12-07 16:12:09,842 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 5 states. [2019-12-07 16:12:09,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 16:12:09,897 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2019-12-07 16:12:09,898 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 16:12:09,899 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 5 [2019-12-07 16:12:09,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 16:12:09,906 INFO L225 Difference]: With dead ends: 42 [2019-12-07 16:12:09,906 INFO L226 Difference]: Without dead ends: 39 [2019-12-07 16:12:09,909 INFO L630 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 [2019-12-07 16:12:09,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2019-12-07 16:12:09,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2019-12-07 16:12:09,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2019-12-07 16:12:09,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 44 transitions. [2019-12-07 16:12:09,942 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 44 transitions. Word has length 5 [2019-12-07 16:12:09,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 16:12:09,942 INFO L462 AbstractCegarLoop]: Abstraction has 39 states and 44 transitions. [2019-12-07 16:12:09,943 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 16:12:09,943 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 44 transitions. [2019-12-07 16:12:09,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-12-07 16:12:09,943 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 16:12:09,943 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-12-07 16:12:09,944 INFO L410 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]=== [2019-12-07 16:12:09,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:12:09,944 INFO L82 PathProgramCache]: Analyzing trace with hash -2121179530, now seen corresponding path program 1 times [2019-12-07 16:12:09,944 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 16:12:09,945 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993508198] [2019-12-07 16:12:09,945 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 16:12:09,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:12:09,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 16:12:09,958 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993508198] [2019-12-07 16:12:09,958 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 16:12:09,958 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 16:12:09,958 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449855930] [2019-12-07 16:12:09,959 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 16:12:09,960 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 16:12:09,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 16:12:09,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 16:12:09,960 INFO L87 Difference]: Start difference. First operand 39 states and 44 transitions. Second operand 3 states. [2019-12-07 16:12:09,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 16:12:09,969 INFO L93 Difference]: Finished difference Result 41 states and 46 transitions. [2019-12-07 16:12:09,969 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 16:12:09,969 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2019-12-07 16:12:09,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 16:12:09,971 INFO L225 Difference]: With dead ends: 41 [2019-12-07 16:12:09,971 INFO L226 Difference]: Without dead ends: 40 [2019-12-07 16:12:09,972 INFO L630 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 [2019-12-07 16:12:09,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2019-12-07 16:12:09,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 38. [2019-12-07 16:12:09,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2019-12-07 16:12:09,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2019-12-07 16:12:09,978 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 6 [2019-12-07 16:12:09,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 16:12:09,978 INFO L462 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2019-12-07 16:12:09,978 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 16:12:09,978 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2019-12-07 16:12:09,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-12-07 16:12:09,979 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 16:12:09,979 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 16:12:09,979 INFO L410 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]=== [2019-12-07 16:12:09,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:12:09,979 INFO L82 PathProgramCache]: Analyzing trace with hash -509849608, now seen corresponding path program 1 times [2019-12-07 16:12:09,980 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 16:12:09,980 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102284501] [2019-12-07 16:12:09,980 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 16:12:09,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:12:10,016 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-07 16:12:10,016 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102284501] [2019-12-07 16:12:10,016 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 16:12:10,017 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-12-07 16:12:10,017 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140166292] [2019-12-07 16:12:10,017 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 16:12:10,017 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 16:12:10,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 16:12:10,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-12-07 16:12:10,018 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand 6 states. [2019-12-07 16:12:10,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 16:12:10,055 INFO L93 Difference]: Finished difference Result 84 states and 98 transitions. [2019-12-07 16:12:10,055 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-12-07 16:12:10,055 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2019-12-07 16:12:10,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 16:12:10,056 INFO L225 Difference]: With dead ends: 84 [2019-12-07 16:12:10,057 INFO L226 Difference]: Without dead ends: 53 [2019-12-07 16:12:10,058 INFO L630 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 [2019-12-07 16:12:10,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2019-12-07 16:12:10,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 46. [2019-12-07 16:12:10,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2019-12-07 16:12:10,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 51 transitions. [2019-12-07 16:12:10,066 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 51 transitions. Word has length 16 [2019-12-07 16:12:10,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 16:12:10,067 INFO L462 AbstractCegarLoop]: Abstraction has 46 states and 51 transitions. [2019-12-07 16:12:10,067 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 16:12:10,067 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 51 transitions. [2019-12-07 16:12:10,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-12-07 16:12:10,067 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 16:12:10,068 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 16:12:10,068 INFO L410 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]=== [2019-12-07 16:12:10,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:12:10,068 INFO L82 PathProgramCache]: Analyzing trace with hash -786790687, now seen corresponding path program 1 times [2019-12-07 16:12:10,068 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 16:12:10,068 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700308000] [2019-12-07 16:12:10,068 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 16:12:10,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:12:10,088 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-12-07 16:12:10,089 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700308000] [2019-12-07 16:12:10,089 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 16:12:10,089 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 16:12:10,089 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405556664] [2019-12-07 16:12:10,089 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 16:12:10,090 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 16:12:10,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 16:12:10,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 16:12:10,090 INFO L87 Difference]: Start difference. First operand 46 states and 51 transitions. Second operand 3 states. [2019-12-07 16:12:10,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 16:12:10,097 INFO L93 Difference]: Finished difference Result 46 states and 51 transitions. [2019-12-07 16:12:10,098 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 16:12:10,098 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2019-12-07 16:12:10,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 16:12:10,099 INFO L225 Difference]: With dead ends: 46 [2019-12-07 16:12:10,099 INFO L226 Difference]: Without dead ends: 45 [2019-12-07 16:12:10,100 INFO L630 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 [2019-12-07 16:12:10,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2019-12-07 16:12:10,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2019-12-07 16:12:10,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2019-12-07 16:12:10,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 50 transitions. [2019-12-07 16:12:10,105 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 50 transitions. Word has length 24 [2019-12-07 16:12:10,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 16:12:10,106 INFO L462 AbstractCegarLoop]: Abstraction has 45 states and 50 transitions. [2019-12-07 16:12:10,106 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 16:12:10,106 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 50 transitions. [2019-12-07 16:12:10,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-12-07 16:12:10,106 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 16:12:10,106 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 16:12:10,107 INFO L410 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]=== [2019-12-07 16:12:10,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:12:10,107 INFO L82 PathProgramCache]: Analyzing trace with hash 1379292549, now seen corresponding path program 1 times [2019-12-07 16:12:10,107 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 16:12:10,107 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959381662] [2019-12-07 16:12:10,107 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 16:12:10,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:12:10,135 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-12-07 16:12:10,136 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959381662] [2019-12-07 16:12:10,136 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 16:12:10,136 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 16:12:10,136 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391254367] [2019-12-07 16:12:10,136 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 16:12:10,136 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 16:12:10,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 16:12:10,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 16:12:10,137 INFO L87 Difference]: Start difference. First operand 45 states and 50 transitions. Second operand 4 states. [2019-12-07 16:12:10,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 16:12:10,153 INFO L93 Difference]: Finished difference Result 51 states and 59 transitions. [2019-12-07 16:12:10,153 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 16:12:10,153 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2019-12-07 16:12:10,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 16:12:10,155 INFO L225 Difference]: With dead ends: 51 [2019-12-07 16:12:10,155 INFO L226 Difference]: Without dead ends: 50 [2019-12-07 16:12:10,155 INFO L630 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 [2019-12-07 16:12:10,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2019-12-07 16:12:10,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2019-12-07 16:12:10,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2019-12-07 16:12:10,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 58 transitions. [2019-12-07 16:12:10,164 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 58 transitions. Word has length 25 [2019-12-07 16:12:10,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 16:12:10,164 INFO L462 AbstractCegarLoop]: Abstraction has 50 states and 58 transitions. [2019-12-07 16:12:10,164 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 16:12:10,164 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 58 transitions. [2019-12-07 16:12:10,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-12-07 16:12:10,165 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 16:12:10,165 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 16:12:10,166 INFO L410 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]=== [2019-12-07 16:12:10,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:12:10,166 INFO L82 PathProgramCache]: Analyzing trace with hash -483037003, now seen corresponding path program 1 times [2019-12-07 16:12:10,166 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 16:12:10,167 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451190578] [2019-12-07 16:12:10,167 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 16:12:10,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:12:10,218 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-12-07 16:12:10,218 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451190578] [2019-12-07 16:12:10,218 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 16:12:10,219 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-12-07 16:12:10,219 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371486671] [2019-12-07 16:12:10,219 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-12-07 16:12:10,219 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 16:12:10,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-12-07 16:12:10,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-12-07 16:12:10,220 INFO L87 Difference]: Start difference. First operand 50 states and 58 transitions. Second operand 8 states. [2019-12-07 16:12:10,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 16:12:10,280 INFO L93 Difference]: Finished difference Result 64 states and 74 transitions. [2019-12-07 16:12:10,280 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-12-07 16:12:10,280 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2019-12-07 16:12:10,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 16:12:10,281 INFO L225 Difference]: With dead ends: 64 [2019-12-07 16:12:10,281 INFO L226 Difference]: Without dead ends: 0 [2019-12-07 16:12:10,282 INFO L630 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 [2019-12-07 16:12:10,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-07 16:12:10,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-07 16:12:10,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-07 16:12:10,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-07 16:12:10,282 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 32 [2019-12-07 16:12:10,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 16:12:10,282 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 16:12:10,283 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-12-07 16:12:10,283 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-07 16:12:10,283 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-07 16:12:10,284 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-12-07 16:12:10,350 INFO L246 CegarLoopResult]: For program point rec1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2019-12-07 16:12:10,350 INFO L246 CegarLoopResult]: For program point rec1FINAL(lines 11 15) no Hoare annotation was computed. [2019-12-07 16:12:10,350 INFO L246 CegarLoopResult]: For program point rec1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2019-12-07 16:12:10,350 INFO L246 CegarLoopResult]: For program point rec1EXIT(lines 11 15) no Hoare annotation was computed. [2019-12-07 16:12:10,350 INFO L246 CegarLoopResult]: For program point L14(line 14) no Hoare annotation was computed. [2019-12-07 16:12:10,350 INFO L249 CegarLoopResult]: At program point rec1ENTRY(lines 11 15) the Hoare annotation is: true [2019-12-07 16:12:10,350 INFO L246 CegarLoopResult]: For program point L14-1(line 14) no Hoare annotation was computed. [2019-12-07 16:12:10,350 INFO L246 CegarLoopResult]: For program point L12(lines 12 13) no Hoare annotation was computed. [2019-12-07 16:12:10,350 INFO L242 CegarLoopResult]: At program point L14-2(line 14) the Hoare annotation is: (not (<= |rec1_#in~i| 0)) [2019-12-07 16:12:10,350 INFO L246 CegarLoopResult]: For program point L14-3(line 14) no Hoare annotation was computed. [2019-12-07 16:12:10,350 INFO L246 CegarLoopResult]: For program point L14-4(line 14) no Hoare annotation was computed. [2019-12-07 16:12:10,351 INFO L246 CegarLoopResult]: For program point rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2019-12-07 16:12:10,351 INFO L246 CegarLoopResult]: For program point L14-5(line 14) no Hoare annotation was computed. [2019-12-07 16:12:10,351 INFO L242 CegarLoopResult]: At program point L14-6(line 14) the Hoare annotation is: (not (<= |rec1_#in~i| 0)) [2019-12-07 16:12:10,351 INFO L246 CegarLoopResult]: For program point rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2019-12-07 16:12:10,351 INFO L246 CegarLoopResult]: For program point rec1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2019-12-07 16:12:10,351 INFO L246 CegarLoopResult]: For program point L14-7(line 14) no Hoare annotation was computed. [2019-12-07 16:12:10,351 INFO L246 CegarLoopResult]: For program point rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2019-12-07 16:12:10,351 INFO L242 CegarLoopResult]: At program point L14-8(line 14) the Hoare annotation is: (not (<= |rec1_#in~i| 0)) [2019-12-07 16:12:10,351 INFO L246 CegarLoopResult]: For program point L14-9(line 14) no Hoare annotation was computed. [2019-12-07 16:12:10,351 INFO L246 CegarLoopResult]: For program point L14-10(line 14) no Hoare annotation was computed. [2019-12-07 16:12:10,351 INFO L246 CegarLoopResult]: For program point L14-11(line 14) no Hoare annotation was computed. [2019-12-07 16:12:10,351 INFO L246 CegarLoopResult]: For program point rec2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2019-12-07 16:12:10,351 INFO L246 CegarLoopResult]: For program point rec2FINAL(lines 17 21) no Hoare annotation was computed. [2019-12-07 16:12:10,352 INFO L246 CegarLoopResult]: For program point rec2EXIT(lines 17 21) no Hoare annotation was computed. [2019-12-07 16:12:10,352 INFO L246 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2019-12-07 16:12:10,352 INFO L246 CegarLoopResult]: For program point L20-1(line 20) no Hoare annotation was computed. [2019-12-07 16:12:10,352 INFO L246 CegarLoopResult]: For program point L18(lines 18 19) no Hoare annotation was computed. [2019-12-07 16:12:10,352 INFO L242 CegarLoopResult]: At program point L20-2(line 20) the Hoare annotation is: (or (and (<= rec2_~j 2147483647) (<= 1 rec2_~j)) (not (<= |rec2_#in~j| 2147483647))) [2019-12-07 16:12:10,352 INFO L246 CegarLoopResult]: For program point L20-3(line 20) no Hoare annotation was computed. [2019-12-07 16:12:10,352 INFO L242 CegarLoopResult]: At program point L20-4(line 20) the Hoare annotation is: (or (and (<= rec2_~j 2147483647) (<= 1 rec2_~j) (<= |rec2_#t~ret3| 0)) (not (<= |rec2_#in~j| 2147483647))) [2019-12-07 16:12:10,352 INFO L246 CegarLoopResult]: For program point L20-5(line 20) no Hoare annotation was computed. [2019-12-07 16:12:10,352 INFO L246 CegarLoopResult]: For program point L20-6(line 20) no Hoare annotation was computed. [2019-12-07 16:12:10,352 INFO L246 CegarLoopResult]: For program point L20-7(line 20) no Hoare annotation was computed. [2019-12-07 16:12:10,353 INFO L249 CegarLoopResult]: At program point rec2ENTRY(lines 17 21) the Hoare annotation is: true [2019-12-07 16:12:10,353 INFO L246 CegarLoopResult]: For program point rec2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2019-12-07 16:12:10,353 INFO L246 CegarLoopResult]: For program point rec2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2019-12-07 16:12:10,353 INFO L246 CegarLoopResult]: For program point rec2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2019-12-07 16:12:10,353 INFO L246 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-12-07 16:12:10,353 INFO L246 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-12-07 16:12:10,353 INFO L242 CegarLoopResult]: At program point L25(line 25) the Hoare annotation is: (<= ULTIMATE.start_main_~x~0 2147483647) [2019-12-07 16:12:10,353 INFO L246 CegarLoopResult]: For program point L25-1(line 25) no Hoare annotation was computed. [2019-12-07 16:12:10,358 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 04:12:10 BoogieIcfgContainer [2019-12-07 16:12:10,358 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 16:12:10,358 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 16:12:10,358 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 16:12:10,358 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 16:12:10,359 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 04:12:09" (3/4) ... [2019-12-07 16:12:10,361 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-12-07 16:12:10,365 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure rec1 [2019-12-07 16:12:10,365 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure rec2 [2019-12-07 16:12:10,370 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2019-12-07 16:12:10,370 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-12-07 16:12:10,370 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-12-07 16:12:10,404 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_822d1b73-6bc2-4b4e-beb4-09582f357eda/bin/utaipan/witness.graphml [2019-12-07 16:12:10,405 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 16:12:10,407 INFO L168 Benchmark]: Toolchain (without parser) took 1133.44 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.0 MB). Free memory was 942.4 MB in the beginning and 1.0 GB in the end (delta: -60.6 MB). Peak memory consumption was 69.4 MB. Max. memory is 11.5 GB. [2019-12-07 16:12:10,407 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 958.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 16:12:10,407 INFO L168 Benchmark]: CACSL2BoogieTranslator took 183.59 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.0 MB). Free memory was 942.4 MB in the beginning and 1.1 GB in the end (delta: -181.3 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. [2019-12-07 16:12:10,408 INFO L168 Benchmark]: Boogie Procedure Inliner took 19.91 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 16:12:10,408 INFO L168 Benchmark]: Boogie Preprocessor took 11.43 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 16:12:10,408 INFO L168 Benchmark]: RCFGBuilder took 171.52 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 11.5 GB. [2019-12-07 16:12:10,409 INFO L168 Benchmark]: TraceAbstraction took 697.31 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 93.5 MB). Peak memory consumption was 93.5 MB. Max. memory is 11.5 GB. [2019-12-07 16:12:10,409 INFO L168 Benchmark]: Witness Printer took 46.75 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-12-07 16:12:10,411 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 958.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 183.59 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.0 MB). Free memory was 942.4 MB in the beginning and 1.1 GB in the end (delta: -181.3 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 19.91 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 11.43 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 171.52 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 697.31 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 93.5 MB). Peak memory consumption was 93.5 MB. Max. memory is 11.5 GB. * Witness Printer took 46.75 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 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. Result: SAFE, OverallTime: 0.5s, OverallIterations: 6, TraceHistogramMax: 3, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 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, 0.1s 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, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...