./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 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_69231a22-f9c0-4718-ac3c-ef1f1736baca/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_69231a22-f9c0-4718-ac3c-ef1f1736baca/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_69231a22-f9c0-4718-ac3c-ef1f1736baca/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_69231a22-f9c0-4718-ac3c-ef1f1736baca/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted/NestedRecursion_1c.c -s /tmp/vcloud-vcloud-master/worker/run_dir_69231a22-f9c0-4718-ac3c-ef1f1736baca/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_69231a22-f9c0-4718-ac3c-ef1f1736baca/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 0.1.24-6b5699a [2019-11-26 02:41:25,702 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 02:41:25,703 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 02:41:25,713 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 02:41:25,713 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 02:41:25,714 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 02:41:25,715 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 02:41:25,717 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 02:41:25,719 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 02:41:25,719 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 02:41:25,720 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 02:41:25,721 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 02:41:25,722 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 02:41:25,723 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 02:41:25,723 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 02:41:25,724 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 02:41:25,725 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 02:41:25,726 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 02:41:25,728 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 02:41:25,729 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 02:41:25,731 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 02:41:25,732 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 02:41:25,733 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 02:41:25,734 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 02:41:25,740 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 02:41:25,740 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 02:41:25,740 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 02:41:25,741 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 02:41:25,741 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 02:41:25,742 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 02:41:25,742 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 02:41:25,743 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 02:41:25,743 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 02:41:25,744 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 02:41:25,745 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 02:41:25,745 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 02:41:25,745 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 02:41:25,745 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 02:41:25,746 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 02:41:25,746 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 02:41:25,747 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 02:41:25,747 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_69231a22-f9c0-4718-ac3c-ef1f1736baca/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf [2019-11-26 02:41:25,767 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 02:41:25,768 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 02:41:25,768 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 02:41:25,769 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 02:41:25,769 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 02:41:25,769 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 02:41:25,769 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-26 02:41:25,769 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 02:41:25,770 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 02:41:25,770 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-26 02:41:25,771 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-26 02:41:25,771 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 02:41:25,771 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-26 02:41:25,771 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-26 02:41:25,771 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-26 02:41:25,772 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 02:41:25,772 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-26 02:41:25,772 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-26 02:41:25,772 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 02:41:25,772 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-26 02:41:25,773 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 02:41:25,773 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-26 02:41:25,773 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-11-26 02:41:25,773 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-26 02:41:25,773 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-26 02:41:25,774 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 02:41:25,774 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 02:41:25,774 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 02:41:25,774 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:41:25,774 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 02:41:25,775 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 02:41:25,775 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-26 02:41:25,775 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-26 02:41:25,775 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-26 02:41:25,775 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-26 02:41:25,775 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 02:41:25,776 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_69231a22-f9c0-4718-ac3c-ef1f1736baca/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 [2019-11-26 02:41:25,961 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 02:41:25,971 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 02:41:25,974 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 02:41:25,975 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 02:41:25,975 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 02:41:25,976 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_69231a22-f9c0-4718-ac3c-ef1f1736baca/bin/utaipan/../../sv-benchmarks/c/termination-crafted/NestedRecursion_1c.c [2019-11-26 02:41:26,026 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_69231a22-f9c0-4718-ac3c-ef1f1736baca/bin/utaipan/data/718ef706b/dc9bb745f8a74083b0d9219c7245f13d/FLAG0246fd147 [2019-11-26 02:41:26,449 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 02:41:26,450 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_69231a22-f9c0-4718-ac3c-ef1f1736baca/sv-benchmarks/c/termination-crafted/NestedRecursion_1c.c [2019-11-26 02:41:26,456 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_69231a22-f9c0-4718-ac3c-ef1f1736baca/bin/utaipan/data/718ef706b/dc9bb745f8a74083b0d9219c7245f13d/FLAG0246fd147 [2019-11-26 02:41:26,473 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_69231a22-f9c0-4718-ac3c-ef1f1736baca/bin/utaipan/data/718ef706b/dc9bb745f8a74083b0d9219c7245f13d [2019-11-26 02:41:26,477 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 02:41:26,478 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 02:41:26,481 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 02:41:26,481 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 02:41:26,484 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 02:41:26,485 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:41:26" (1/1) ... [2019-11-26 02:41:26,488 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c235862 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:41:26, skipping insertion in model container [2019-11-26 02:41:26,488 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:41:26" (1/1) ... [2019-11-26 02:41:26,497 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 02:41:26,512 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:41:26,637 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:41:26,640 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 02:41:26,720 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:41:26,734 INFO L205 MainTranslator]: Completed translation [2019-11-26 02:41:26,734 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:41:26 WrapperNode [2019-11-26 02:41:26,734 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 02:41:26,735 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 02:41:26,735 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 02:41:26,735 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 02:41:26,741 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:41:26" (1/1) ... [2019-11-26 02:41:26,745 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:41:26" (1/1) ... [2019-11-26 02:41:26,759 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 02:41:26,760 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 02:41:26,760 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 02:41:26,760 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 02:41:26,768 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:41:26" (1/1) ... [2019-11-26 02:41:26,768 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:41:26" (1/1) ... [2019-11-26 02:41:26,769 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:41:26" (1/1) ... [2019-11-26 02:41:26,769 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:41:26" (1/1) ... [2019-11-26 02:41:26,771 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:41:26" (1/1) ... [2019-11-26 02:41:26,773 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:41:26" (1/1) ... [2019-11-26 02:41:26,773 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:41:26" (1/1) ... [2019-11-26 02:41:26,775 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 02:41:26,775 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 02:41:26,775 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 02:41:26,775 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 02:41:26,776 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:41:26" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_69231a22-f9c0-4718-ac3c-ef1f1736baca/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 [2019-11-26 02:41:26,823 INFO L130 BoogieDeclarations]: Found specification of procedure rec1 [2019-11-26 02:41:26,823 INFO L138 BoogieDeclarations]: Found implementation of procedure rec1 [2019-11-26 02:41:26,823 INFO L130 BoogieDeclarations]: Found specification of procedure rec2 [2019-11-26 02:41:26,824 INFO L138 BoogieDeclarations]: Found implementation of procedure rec2 [2019-11-26 02:41:26,824 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 02:41:26,824 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 02:41:27,122 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 02:41:27,122 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-26 02:41:27,123 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:41:27 BoogieIcfgContainer [2019-11-26 02:41:27,124 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 02:41:27,124 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 02:41:27,125 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 02:41:27,127 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 02:41:27,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 02:41:26" (1/3) ... [2019-11-26 02:41:27,128 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bc0fd57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:41:27, skipping insertion in model container [2019-11-26 02:41:27,128 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:41:26" (2/3) ... [2019-11-26 02:41:27,128 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bc0fd57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:41:27, skipping insertion in model container [2019-11-26 02:41:27,129 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:41:27" (3/3) ... [2019-11-26 02:41:27,130 INFO L109 eAbstractionObserver]: Analyzing ICFG NestedRecursion_1c.c [2019-11-26 02:41:27,139 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 02:41:27,144 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 10 error locations. [2019-11-26 02:41:27,154 INFO L249 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2019-11-26 02:41:27,186 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 02:41:27,186 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-26 02:41:27,186 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 02:41:27,186 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 02:41:27,187 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 02:41:27,187 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 02:41:27,187 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 02:41:27,187 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 02:41:27,212 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2019-11-26 02:41:27,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-26 02:41:27,216 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:41:27,217 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-26 02:41:27,218 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]=== [2019-11-26 02:41:27,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:41:27,223 INFO L82 PathProgramCache]: Analyzing trace with hash 70122184, now seen corresponding path program 1 times [2019-11-26 02:41:27,231 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:41:27,232 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507943035] [2019-11-26 02:41:27,232 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:41:27,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:41:27,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:41:27,377 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507943035] [2019-11-26 02:41:27,378 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:41:27,378 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-26 02:41:27,379 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569142470] [2019-11-26 02:41:27,383 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-26 02:41:27,383 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:41:27,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-26 02:41:27,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-26 02:41:27,394 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 5 states. [2019-11-26 02:41:27,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:41:27,476 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2019-11-26 02:41:27,476 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-26 02:41:27,477 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 5 [2019-11-26 02:41:27,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:41:27,484 INFO L225 Difference]: With dead ends: 42 [2019-11-26 02:41:27,485 INFO L226 Difference]: Without dead ends: 39 [2019-11-26 02:41:27,487 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 [2019-11-26 02:41:27,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2019-11-26 02:41:27,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2019-11-26 02:41:27,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2019-11-26 02:41:27,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 44 transitions. [2019-11-26 02:41:27,526 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 44 transitions. Word has length 5 [2019-11-26 02:41:27,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:41:27,527 INFO L462 AbstractCegarLoop]: Abstraction has 39 states and 44 transitions. [2019-11-26 02:41:27,527 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-26 02:41:27,527 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 44 transitions. [2019-11-26 02:41:27,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-26 02:41:27,527 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:41:27,527 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-26 02:41:27,528 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]=== [2019-11-26 02:41:27,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:41:27,528 INFO L82 PathProgramCache]: Analyzing trace with hash -2121179530, now seen corresponding path program 1 times [2019-11-26 02:41:27,528 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:41:27,529 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2514755] [2019-11-26 02:41:27,529 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:41:27,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:41:27,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:41:27,552 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2514755] [2019-11-26 02:41:27,552 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:41:27,552 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-26 02:41:27,552 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673620253] [2019-11-26 02:41:27,553 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-26 02:41:27,554 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:41:27,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-26 02:41:27,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-26 02:41:27,554 INFO L87 Difference]: Start difference. First operand 39 states and 44 transitions. Second operand 3 states. [2019-11-26 02:41:27,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:41:27,573 INFO L93 Difference]: Finished difference Result 41 states and 46 transitions. [2019-11-26 02:41:27,573 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-26 02:41:27,574 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2019-11-26 02:41:27,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:41:27,576 INFO L225 Difference]: With dead ends: 41 [2019-11-26 02:41:27,576 INFO L226 Difference]: Without dead ends: 40 [2019-11-26 02:41:27,577 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 [2019-11-26 02:41:27,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2019-11-26 02:41:27,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 38. [2019-11-26 02:41:27,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2019-11-26 02:41:27,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2019-11-26 02:41:27,586 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 6 [2019-11-26 02:41:27,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:41:27,586 INFO L462 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2019-11-26 02:41:27,586 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-26 02:41:27,587 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2019-11-26 02:41:27,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-26 02:41:27,587 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:41:27,588 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:41:27,588 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]=== [2019-11-26 02:41:27,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:41:27,588 INFO L82 PathProgramCache]: Analyzing trace with hash -509849608, now seen corresponding path program 1 times [2019-11-26 02:41:27,589 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:41:27,589 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228569732] [2019-11-26 02:41:27,589 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:41:27,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:41:27,652 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-26 02:41:27,652 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228569732] [2019-11-26 02:41:27,652 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:41:27,652 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-26 02:41:27,653 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660249057] [2019-11-26 02:41:27,653 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-26 02:41:27,653 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:41:27,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-26 02:41:27,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-26 02:41:27,653 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand 6 states. [2019-11-26 02:41:27,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:41:27,717 INFO L93 Difference]: Finished difference Result 84 states and 98 transitions. [2019-11-26 02:41:27,717 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-26 02:41:27,717 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2019-11-26 02:41:27,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:41:27,719 INFO L225 Difference]: With dead ends: 84 [2019-11-26 02:41:27,719 INFO L226 Difference]: Without dead ends: 53 [2019-11-26 02:41:27,721 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 [2019-11-26 02:41:27,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2019-11-26 02:41:27,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 46. [2019-11-26 02:41:27,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2019-11-26 02:41:27,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 51 transitions. [2019-11-26 02:41:27,734 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 51 transitions. Word has length 16 [2019-11-26 02:41:27,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:41:27,735 INFO L462 AbstractCegarLoop]: Abstraction has 46 states and 51 transitions. [2019-11-26 02:41:27,735 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-26 02:41:27,735 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 51 transitions. [2019-11-26 02:41:27,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-11-26 02:41:27,736 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:41:27,750 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:41:27,750 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]=== [2019-11-26 02:41:27,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:41:27,751 INFO L82 PathProgramCache]: Analyzing trace with hash -786790687, now seen corresponding path program 1 times [2019-11-26 02:41:27,755 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:41:27,755 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747535862] [2019-11-26 02:41:27,755 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:41:27,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:41:27,822 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-11-26 02:41:27,822 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747535862] [2019-11-26 02:41:27,823 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:41:27,823 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-26 02:41:27,823 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805746522] [2019-11-26 02:41:27,823 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-26 02:41:27,824 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:41:27,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-26 02:41:27,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-26 02:41:27,824 INFO L87 Difference]: Start difference. First operand 46 states and 51 transitions. Second operand 3 states. [2019-11-26 02:41:27,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:41:27,840 INFO L93 Difference]: Finished difference Result 46 states and 51 transitions. [2019-11-26 02:41:27,840 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-26 02:41:27,840 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2019-11-26 02:41:27,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:41:27,842 INFO L225 Difference]: With dead ends: 46 [2019-11-26 02:41:27,842 INFO L226 Difference]: Without dead ends: 45 [2019-11-26 02:41:27,842 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 [2019-11-26 02:41:27,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2019-11-26 02:41:27,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2019-11-26 02:41:27,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2019-11-26 02:41:27,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 50 transitions. [2019-11-26 02:41:27,852 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 50 transitions. Word has length 24 [2019-11-26 02:41:27,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:41:27,852 INFO L462 AbstractCegarLoop]: Abstraction has 45 states and 50 transitions. [2019-11-26 02:41:27,852 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-26 02:41:27,852 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 50 transitions. [2019-11-26 02:41:27,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-11-26 02:41:27,853 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:41:27,854 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:41:27,854 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]=== [2019-11-26 02:41:27,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:41:27,855 INFO L82 PathProgramCache]: Analyzing trace with hash 1379292549, now seen corresponding path program 1 times [2019-11-26 02:41:27,855 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:41:27,855 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611775211] [2019-11-26 02:41:27,855 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:41:27,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:41:27,891 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-11-26 02:41:27,891 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611775211] [2019-11-26 02:41:27,891 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:41:27,891 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-26 02:41:27,892 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130962211] [2019-11-26 02:41:27,892 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-26 02:41:27,892 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:41:27,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-26 02:41:27,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-26 02:41:27,893 INFO L87 Difference]: Start difference. First operand 45 states and 50 transitions. Second operand 4 states. [2019-11-26 02:41:27,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:41:27,919 INFO L93 Difference]: Finished difference Result 51 states and 59 transitions. [2019-11-26 02:41:27,921 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-26 02:41:27,921 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2019-11-26 02:41:27,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:41:27,922 INFO L225 Difference]: With dead ends: 51 [2019-11-26 02:41:27,922 INFO L226 Difference]: Without dead ends: 50 [2019-11-26 02:41:27,923 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 [2019-11-26 02:41:27,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2019-11-26 02:41:27,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2019-11-26 02:41:27,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2019-11-26 02:41:27,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 58 transitions. [2019-11-26 02:41:27,936 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 58 transitions. Word has length 25 [2019-11-26 02:41:27,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:41:27,937 INFO L462 AbstractCegarLoop]: Abstraction has 50 states and 58 transitions. [2019-11-26 02:41:27,937 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-26 02:41:27,937 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 58 transitions. [2019-11-26 02:41:27,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-11-26 02:41:27,938 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:41:27,938 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] [2019-11-26 02:41:27,939 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]=== [2019-11-26 02:41:27,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:41:27,939 INFO L82 PathProgramCache]: Analyzing trace with hash -483037003, now seen corresponding path program 1 times [2019-11-26 02:41:27,939 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:41:27,940 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590980771] [2019-11-26 02:41:27,940 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:41:27,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:41:28,034 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-11-26 02:41:28,034 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590980771] [2019-11-26 02:41:28,034 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:41:28,035 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-26 02:41:28,035 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749478969] [2019-11-26 02:41:28,035 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-26 02:41:28,035 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:41:28,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-26 02:41:28,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-11-26 02:41:28,036 INFO L87 Difference]: Start difference. First operand 50 states and 58 transitions. Second operand 8 states. [2019-11-26 02:41:28,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:41:28,157 INFO L93 Difference]: Finished difference Result 64 states and 74 transitions. [2019-11-26 02:41:28,157 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-26 02:41:28,157 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2019-11-26 02:41:28,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:41:28,158 INFO L225 Difference]: With dead ends: 64 [2019-11-26 02:41:28,158 INFO L226 Difference]: Without dead ends: 0 [2019-11-26 02:41:28,160 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 [2019-11-26 02:41:28,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-26 02:41:28,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-26 02:41:28,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-26 02:41:28,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-26 02:41:28,160 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 32 [2019-11-26 02:41:28,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:41:28,161 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-26 02:41:28,161 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-26 02:41:28,161 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-26 02:41:28,161 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-26 02:41:28,165 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-26 02:41:28,292 INFO L444 ceAbstractionStarter]: For program point rec1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2019-11-26 02:41:28,292 INFO L444 ceAbstractionStarter]: For program point rec1FINAL(lines 11 15) no Hoare annotation was computed. [2019-11-26 02:41:28,292 INFO L444 ceAbstractionStarter]: For program point rec1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2019-11-26 02:41:28,292 INFO L444 ceAbstractionStarter]: For program point rec1EXIT(lines 11 15) no Hoare annotation was computed. [2019-11-26 02:41:28,292 INFO L444 ceAbstractionStarter]: For program point L14(line 14) no Hoare annotation was computed. [2019-11-26 02:41:28,293 INFO L447 ceAbstractionStarter]: At program point rec1ENTRY(lines 11 15) the Hoare annotation is: true [2019-11-26 02:41:28,293 INFO L444 ceAbstractionStarter]: For program point L14-1(line 14) no Hoare annotation was computed. [2019-11-26 02:41:28,293 INFO L444 ceAbstractionStarter]: For program point L12(lines 12 13) no Hoare annotation was computed. [2019-11-26 02:41:28,293 INFO L440 ceAbstractionStarter]: At program point L14-2(line 14) the Hoare annotation is: (not (<= |rec1_#in~i| 0)) [2019-11-26 02:41:28,293 INFO L444 ceAbstractionStarter]: For program point L14-3(line 14) no Hoare annotation was computed. [2019-11-26 02:41:28,293 INFO L444 ceAbstractionStarter]: For program point L14-4(line 14) no Hoare annotation was computed. [2019-11-26 02:41:28,293 INFO L444 ceAbstractionStarter]: For program point rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2019-11-26 02:41:28,294 INFO L444 ceAbstractionStarter]: For program point L14-5(line 14) no Hoare annotation was computed. [2019-11-26 02:41:28,294 INFO L440 ceAbstractionStarter]: At program point L14-6(line 14) the Hoare annotation is: (not (<= |rec1_#in~i| 0)) [2019-11-26 02:41:28,294 INFO L444 ceAbstractionStarter]: For program point rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2019-11-26 02:41:28,294 INFO L444 ceAbstractionStarter]: For program point rec1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2019-11-26 02:41:28,294 INFO L444 ceAbstractionStarter]: For program point L14-7(line 14) no Hoare annotation was computed. [2019-11-26 02:41:28,294 INFO L444 ceAbstractionStarter]: For program point rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2019-11-26 02:41:28,294 INFO L440 ceAbstractionStarter]: At program point L14-8(line 14) the Hoare annotation is: (not (<= |rec1_#in~i| 0)) [2019-11-26 02:41:28,295 INFO L444 ceAbstractionStarter]: For program point L14-9(line 14) no Hoare annotation was computed. [2019-11-26 02:41:28,295 INFO L444 ceAbstractionStarter]: For program point L14-10(line 14) no Hoare annotation was computed. [2019-11-26 02:41:28,295 INFO L444 ceAbstractionStarter]: For program point L14-11(line 14) no Hoare annotation was computed. [2019-11-26 02:41:28,295 INFO L444 ceAbstractionStarter]: For program point rec2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2019-11-26 02:41:28,295 INFO L444 ceAbstractionStarter]: For program point rec2FINAL(lines 17 21) no Hoare annotation was computed. [2019-11-26 02:41:28,297 INFO L444 ceAbstractionStarter]: For program point rec2EXIT(lines 17 21) no Hoare annotation was computed. [2019-11-26 02:41:28,297 INFO L444 ceAbstractionStarter]: For program point L20(line 20) no Hoare annotation was computed. [2019-11-26 02:41:28,297 INFO L444 ceAbstractionStarter]: For program point L20-1(line 20) no Hoare annotation was computed. [2019-11-26 02:41:28,298 INFO L444 ceAbstractionStarter]: For program point L18(lines 18 19) no Hoare annotation was computed. [2019-11-26 02:41:28,298 INFO L440 ceAbstractionStarter]: At program point L20-2(line 20) the Hoare annotation is: (or (and (<= rec2_~j 2147483647) (<= 1 rec2_~j)) (not (<= |rec2_#in~j| 2147483647))) [2019-11-26 02:41:28,298 INFO L444 ceAbstractionStarter]: For program point L20-3(line 20) no Hoare annotation was computed. [2019-11-26 02:41:28,299 INFO L440 ceAbstractionStarter]: 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))) [2019-11-26 02:41:28,299 INFO L444 ceAbstractionStarter]: For program point L20-5(line 20) no Hoare annotation was computed. [2019-11-26 02:41:28,299 INFO L444 ceAbstractionStarter]: For program point L20-6(line 20) no Hoare annotation was computed. [2019-11-26 02:41:28,299 INFO L444 ceAbstractionStarter]: For program point L20-7(line 20) no Hoare annotation was computed. [2019-11-26 02:41:28,299 INFO L447 ceAbstractionStarter]: At program point rec2ENTRY(lines 17 21) the Hoare annotation is: true [2019-11-26 02:41:28,299 INFO L444 ceAbstractionStarter]: For program point rec2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2019-11-26 02:41:28,299 INFO L444 ceAbstractionStarter]: For program point rec2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2019-11-26 02:41:28,300 INFO L444 ceAbstractionStarter]: For program point rec2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2019-11-26 02:41:28,300 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-26 02:41:28,300 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-26 02:41:28,300 INFO L440 ceAbstractionStarter]: At program point L25(line 25) the Hoare annotation is: (<= ULTIMATE.start_main_~x~0 2147483647) [2019-11-26 02:41:28,300 INFO L444 ceAbstractionStarter]: For program point L25-1(line 25) no Hoare annotation was computed. [2019-11-26 02:41:28,306 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 02:41:28 BoogieIcfgContainer [2019-11-26 02:41:28,306 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-26 02:41:28,306 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-26 02:41:28,306 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-26 02:41:28,306 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-26 02:41:28,307 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:41:27" (3/4) ... [2019-11-26 02:41:28,327 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-26 02:41:28,332 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure rec1 [2019-11-26 02:41:28,333 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure rec2 [2019-11-26 02:41:28,338 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2019-11-26 02:41:28,338 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-11-26 02:41:28,338 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-26 02:41:28,395 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_69231a22-f9c0-4718-ac3c-ef1f1736baca/bin/utaipan/witness.graphml [2019-11-26 02:41:28,395 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-26 02:41:28,397 INFO L168 Benchmark]: Toolchain (without parser) took 1918.66 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 175.1 MB). Free memory was 944.7 MB in the beginning and 1.0 GB in the end (delta: -104.8 MB). Peak memory consumption was 70.3 MB. Max. memory is 11.5 GB. [2019-11-26 02:41:28,398 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:41:28,399 INFO L168 Benchmark]: CACSL2BoogieTranslator took 253.97 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 175.1 MB). Free memory was 944.7 MB in the beginning and 1.2 GB in the end (delta: -227.9 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. [2019-11-26 02:41:28,399 INFO L168 Benchmark]: Boogie Procedure Inliner took 24.70 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:41:28,400 INFO L168 Benchmark]: Boogie Preprocessor took 15.09 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2019-11-26 02:41:28,400 INFO L168 Benchmark]: RCFGBuilder took 348.59 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 23.7 MB). Peak memory consumption was 23.7 MB. Max. memory is 11.5 GB. [2019-11-26 02:41:28,401 INFO L168 Benchmark]: TraceAbstraction took 1181.46 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: 91.3 MB). Peak memory consumption was 91.3 MB. Max. memory is 11.5 GB. [2019-11-26 02:41:28,401 INFO L168 Benchmark]: Witness Printer took 89.39 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-26 02:41:28,404 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 253.97 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 175.1 MB). Free memory was 944.7 MB in the beginning and 1.2 GB in the end (delta: -227.9 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 24.70 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 15.09 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 348.59 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 23.7 MB). Peak memory consumption was 23.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1181.46 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: 91.3 MB). Peak memory consumption was 91.3 MB. Max. memory is 11.5 GB. * Witness Printer took 89.39 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: 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: 1.1s, OverallIterations: 6, TraceHistogramMax: 3, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, HoareTripleCheckerStatistics: 219 SDtfs, 52 SDslu, 489 SDs, 0 SdLazy, 125 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s 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, 0.2s 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...