./Ultimate.py --spec ../../sv-benchmarks/c/NoOverflows.prp --file ../../sv-benchmarks/c/recursive/McCarthy91_true-unreach-call_true-no-overflow_true-termination.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_5abd1723-556b-4a0e-9166-66644205ce58/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_5abd1723-556b-4a0e-9166-66644205ce58/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_5abd1723-556b-4a0e-9166-66644205ce58/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_5abd1723-556b-4a0e-9166-66644205ce58/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/recursive/McCarthy91_true-unreach-call_true-no-overflow_true-termination.c -s /tmp/vcloud-vcloud-master/worker/working_dir_5abd1723-556b-4a0e-9166-66644205ce58/bin-2019/utaipan/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_5abd1723-556b-4a0e-9166-66644205ce58/bin-2019/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 32bit --witnessprinter.graph.data.programhash edcc597a46f9ad79563531282ca675b8b1d7c4bf ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-5842f4b [2018-11-18 15:01:32,895 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 15:01:32,896 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 15:01:32,904 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 15:01:32,904 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 15:01:32,905 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 15:01:32,906 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 15:01:32,907 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 15:01:32,908 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 15:01:32,908 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 15:01:32,909 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 15:01:32,909 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 15:01:32,910 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 15:01:32,910 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 15:01:32,911 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 15:01:32,912 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 15:01:32,912 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 15:01:32,913 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 15:01:32,915 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 15:01:32,916 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 15:01:32,917 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 15:01:32,917 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 15:01:32,919 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 15:01:32,919 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 15:01:32,919 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 15:01:32,920 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 15:01:32,921 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 15:01:32,921 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 15:01:32,922 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 15:01:32,922 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 15:01:32,923 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 15:01:32,923 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 15:01:32,923 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 15:01:32,923 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 15:01:32,924 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 15:01:32,924 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 15:01:32,925 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_5abd1723-556b-4a0e-9166-66644205ce58/bin-2019/utaipan/config/svcomp-Overflow-32bit-Taipan_Default.epf [2018-11-18 15:01:32,934 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 15:01:32,935 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 15:01:32,935 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 15:01:32,935 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-18 15:01:32,936 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-18 15:01:32,936 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-18 15:01:32,936 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-18 15:01:32,936 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-18 15:01:32,936 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-18 15:01:32,936 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-18 15:01:32,937 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-18 15:01:32,937 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-18 15:01:32,937 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-18 15:01:32,937 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 15:01:32,937 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 15:01:32,938 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-18 15:01:32,938 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 15:01:32,938 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 15:01:32,938 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 15:01:32,938 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 15:01:32,938 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 15:01:32,939 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 15:01:32,939 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2018-11-18 15:01:32,939 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 15:01:32,939 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 15:01:32,939 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 15:01:32,939 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 15:01:32,939 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 15:01:32,940 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 15:01:32,940 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 15:01:32,940 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 15:01:32,940 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 15:01:32,940 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 15:01:32,940 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 15:01:32,940 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 15:01:32,941 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-18 15:01:32,941 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 15:01:32,941 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 15:01:32,941 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-18 15:01:32,941 INFO L133 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/working_dir_5abd1723-556b-4a0e-9166-66644205ce58/bin-2019/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 -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> edcc597a46f9ad79563531282ca675b8b1d7c4bf [2018-11-18 15:01:32,965 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 15:01:32,973 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 15:01:32,975 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 15:01:32,976 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 15:01:32,976 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 15:01:32,977 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_5abd1723-556b-4a0e-9166-66644205ce58/bin-2019/utaipan/../../sv-benchmarks/c/recursive/McCarthy91_true-unreach-call_true-no-overflow_true-termination.c [2018-11-18 15:01:33,013 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_5abd1723-556b-4a0e-9166-66644205ce58/bin-2019/utaipan/data/83e3b415f/f3e553bcfb284472a6407a2be920e19e/FLAG2e5470de1 [2018-11-18 15:01:33,400 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 15:01:33,400 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_5abd1723-556b-4a0e-9166-66644205ce58/sv-benchmarks/c/recursive/McCarthy91_true-unreach-call_true-no-overflow_true-termination.c [2018-11-18 15:01:33,404 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_5abd1723-556b-4a0e-9166-66644205ce58/bin-2019/utaipan/data/83e3b415f/f3e553bcfb284472a6407a2be920e19e/FLAG2e5470de1 [2018-11-18 15:01:33,412 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_5abd1723-556b-4a0e-9166-66644205ce58/bin-2019/utaipan/data/83e3b415f/f3e553bcfb284472a6407a2be920e19e [2018-11-18 15:01:33,414 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 15:01:33,415 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 15:01:33,415 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 15:01:33,415 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 15:01:33,417 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 15:01:33,418 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 03:01:33" (1/1) ... [2018-11-18 15:01:33,420 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65ec56fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:01:33, skipping insertion in model container [2018-11-18 15:01:33,420 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 03:01:33" (1/1) ... [2018-11-18 15:01:33,426 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 15:01:33,436 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 15:01:33,536 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 15:01:33,538 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 15:01:33,547 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 15:01:33,555 INFO L195 MainTranslator]: Completed translation [2018-11-18 15:01:33,556 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:01:33 WrapperNode [2018-11-18 15:01:33,556 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 15:01:33,556 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 15:01:33,556 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 15:01:33,556 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 15:01:33,561 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:01:33" (1/1) ... [2018-11-18 15:01:33,564 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:01:33" (1/1) ... [2018-11-18 15:01:33,568 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 15:01:33,568 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 15:01:33,568 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 15:01:33,568 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 15:01:33,574 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:01:33" (1/1) ... [2018-11-18 15:01:33,574 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:01:33" (1/1) ... [2018-11-18 15:01:33,574 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:01:33" (1/1) ... [2018-11-18 15:01:33,575 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:01:33" (1/1) ... [2018-11-18 15:01:33,577 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:01:33" (1/1) ... [2018-11-18 15:01:33,578 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:01:33" (1/1) ... [2018-11-18 15:01:33,578 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:01:33" (1/1) ... [2018-11-18 15:01:33,579 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 15:01:33,580 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 15:01:33,580 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 15:01:33,580 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 15:01:33,581 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:01:33" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5abd1723-556b-4a0e-9166-66644205ce58/bin-2019/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 [2018-11-18 15:01:33,659 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 15:01:33,659 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 15:01:33,660 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 15:01:33,660 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 15:01:33,660 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 15:01:33,660 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 15:01:33,660 INFO L130 BoogieDeclarations]: Found specification of procedure f91 [2018-11-18 15:01:33,660 INFO L138 BoogieDeclarations]: Found implementation of procedure f91 [2018-11-18 15:01:33,789 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 15:01:33,789 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 03:01:33 BoogieIcfgContainer [2018-11-18 15:01:33,789 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 15:01:33,790 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 15:01:33,790 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 15:01:33,792 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 15:01:33,792 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 03:01:33" (1/3) ... [2018-11-18 15:01:33,793 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72aafd17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 03:01:33, skipping insertion in model container [2018-11-18 15:01:33,793 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:01:33" (2/3) ... [2018-11-18 15:01:33,793 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72aafd17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 03:01:33, skipping insertion in model container [2018-11-18 15:01:33,794 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 03:01:33" (3/3) ... [2018-11-18 15:01:33,795 INFO L112 eAbstractionObserver]: Analyzing ICFG McCarthy91_true-unreach-call_true-no-overflow_true-termination.c [2018-11-18 15:01:33,803 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 15:01:33,810 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2018-11-18 15:01:33,823 INFO L257 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2018-11-18 15:01:33,850 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 15:01:33,850 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 15:01:33,850 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 15:01:33,850 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 15:01:33,851 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 15:01:33,851 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 15:01:33,851 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 15:01:33,851 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 15:01:33,866 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2018-11-18 15:01:33,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-11-18 15:01:33,871 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 15:01:33,871 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 15:01:33,873 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 15:01:33,877 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:01:33,878 INFO L82 PathProgramCache]: Analyzing trace with hash 28465406, now seen corresponding path program 1 times [2018-11-18 15:01:33,880 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 15:01:33,911 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:01:33,911 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 15:01:33,911 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:01:33,911 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 15:01:33,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:01:33,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:01:33,987 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 15:01:33,987 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 15:01:33,988 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 15:01:33,992 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-18 15:01:34,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-18 15:01:34,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-18 15:01:34,006 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 5 states. [2018-11-18 15:01:34,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 15:01:34,144 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2018-11-18 15:01:34,144 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-18 15:01:34,145 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2018-11-18 15:01:34,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 15:01:34,152 INFO L225 Difference]: With dead ends: 58 [2018-11-18 15:01:34,152 INFO L226 Difference]: Without dead ends: 45 [2018-11-18 15:01:34,154 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-18 15:01:34,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-11-18 15:01:34,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 40. [2018-11-18 15:01:34,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-11-18 15:01:34,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 47 transitions. [2018-11-18 15:01:34,183 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 47 transitions. Word has length 9 [2018-11-18 15:01:34,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 15:01:34,183 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 47 transitions. [2018-11-18 15:01:34,183 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-18 15:01:34,184 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 47 transitions. [2018-11-18 15:01:34,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-11-18 15:01:34,184 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 15:01:34,184 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 15:01:34,184 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 15:01:34,184 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:01:34,185 INFO L82 PathProgramCache]: Analyzing trace with hash 28465566, now seen corresponding path program 1 times [2018-11-18 15:01:34,185 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 15:01:34,185 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:01:34,186 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 15:01:34,186 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:01:34,186 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 15:01:34,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:01:34,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:01:34,209 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 15:01:34,209 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 15:01:34,209 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 15:01:34,210 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 15:01:34,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 15:01:34,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 15:01:34,211 INFO L87 Difference]: Start difference. First operand 40 states and 47 transitions. Second operand 3 states. [2018-11-18 15:01:34,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 15:01:34,229 INFO L93 Difference]: Finished difference Result 44 states and 54 transitions. [2018-11-18 15:01:34,229 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 15:01:34,229 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2018-11-18 15:01:34,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 15:01:34,230 INFO L225 Difference]: With dead ends: 44 [2018-11-18 15:01:34,230 INFO L226 Difference]: Without dead ends: 43 [2018-11-18 15:01:34,231 INFO L604 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 [2018-11-18 15:01:34,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-11-18 15:01:34,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 39. [2018-11-18 15:01:34,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-11-18 15:01:34,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 45 transitions. [2018-11-18 15:01:34,236 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 45 transitions. Word has length 9 [2018-11-18 15:01:34,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 15:01:34,237 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 45 transitions. [2018-11-18 15:01:34,237 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 15:01:34,237 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 45 transitions. [2018-11-18 15:01:34,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-18 15:01:34,237 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 15:01:34,237 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 15:01:34,237 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 15:01:34,238 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:01:34,238 INFO L82 PathProgramCache]: Analyzing trace with hash 882427654, now seen corresponding path program 1 times [2018-11-18 15:01:34,238 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 15:01:34,238 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:01:34,239 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 15:01:34,239 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:01:34,239 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 15:01:34,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:01:34,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:01:34,250 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 15:01:34,250 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 15:01:34,250 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 15:01:34,250 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 15:01:34,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 15:01:34,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 15:01:34,251 INFO L87 Difference]: Start difference. First operand 39 states and 45 transitions. Second operand 3 states. [2018-11-18 15:01:34,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 15:01:34,270 INFO L93 Difference]: Finished difference Result 43 states and 52 transitions. [2018-11-18 15:01:34,271 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 15:01:34,271 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-11-18 15:01:34,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 15:01:34,271 INFO L225 Difference]: With dead ends: 43 [2018-11-18 15:01:34,272 INFO L226 Difference]: Without dead ends: 42 [2018-11-18 15:01:34,272 INFO L604 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 [2018-11-18 15:01:34,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-11-18 15:01:34,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 38. [2018-11-18 15:01:34,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-11-18 15:01:34,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2018-11-18 15:01:34,278 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 10 [2018-11-18 15:01:34,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 15:01:34,279 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2018-11-18 15:01:34,279 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 15:01:34,279 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2018-11-18 15:01:34,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-18 15:01:34,279 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 15:01:34,279 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 15:01:34,280 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 15:01:34,280 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:01:34,280 INFO L82 PathProgramCache]: Analyzing trace with hash 882432619, now seen corresponding path program 1 times [2018-11-18 15:01:34,280 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 15:01:34,280 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:01:34,280 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 15:01:34,281 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:01:34,281 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 15:01:34,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:01:34,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:01:34,305 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 15:01:34,305 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 15:01:34,305 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 15:01:34,305 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-18 15:01:34,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-18 15:01:34,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-18 15:01:34,306 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand 5 states. [2018-11-18 15:01:34,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 15:01:34,388 INFO L93 Difference]: Finished difference Result 54 states and 64 transitions. [2018-11-18 15:01:34,389 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-18 15:01:34,389 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2018-11-18 15:01:34,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 15:01:34,390 INFO L225 Difference]: With dead ends: 54 [2018-11-18 15:01:34,390 INFO L226 Difference]: Without dead ends: 53 [2018-11-18 15:01:34,391 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-18 15:01:34,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-11-18 15:01:34,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 50. [2018-11-18 15:01:34,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-11-18 15:01:34,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 57 transitions. [2018-11-18 15:01:34,400 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 57 transitions. Word has length 10 [2018-11-18 15:01:34,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 15:01:34,400 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 57 transitions. [2018-11-18 15:01:34,400 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-18 15:01:34,400 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 57 transitions. [2018-11-18 15:01:34,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-18 15:01:34,401 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 15:01:34,401 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 15:01:34,401 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 15:01:34,401 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:01:34,401 INFO L82 PathProgramCache]: Analyzing trace with hash 782712181, now seen corresponding path program 1 times [2018-11-18 15:01:34,401 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 15:01:34,402 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:01:34,402 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 15:01:34,402 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:01:34,403 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 15:01:34,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:01:34,439 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:01:34,439 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 15:01:34,439 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 15:01:34,439 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 15:01:34,439 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-18 15:01:34,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-18 15:01:34,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-11-18 15:01:34,440 INFO L87 Difference]: Start difference. First operand 50 states and 57 transitions. Second operand 5 states. [2018-11-18 15:01:34,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 15:01:34,500 INFO L93 Difference]: Finished difference Result 72 states and 86 transitions. [2018-11-18 15:01:34,500 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-18 15:01:34,500 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2018-11-18 15:01:34,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 15:01:34,501 INFO L225 Difference]: With dead ends: 72 [2018-11-18 15:01:34,501 INFO L226 Difference]: Without dead ends: 71 [2018-11-18 15:01:34,501 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-11-18 15:01:34,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-11-18 15:01:34,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 62. [2018-11-18 15:01:34,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2018-11-18 15:01:34,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 71 transitions. [2018-11-18 15:01:34,509 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 71 transitions. Word has length 14 [2018-11-18 15:01:34,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 15:01:34,509 INFO L480 AbstractCegarLoop]: Abstraction has 62 states and 71 transitions. [2018-11-18 15:01:34,509 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-18 15:01:34,509 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 71 transitions. [2018-11-18 15:01:34,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-11-18 15:01:34,510 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 15:01:34,510 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 15:01:34,510 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 15:01:34,510 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:01:34,511 INFO L82 PathProgramCache]: Analyzing trace with hash 421274749, now seen corresponding path program 1 times [2018-11-18 15:01:34,511 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 15:01:34,511 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:01:34,511 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 15:01:34,512 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:01:34,512 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 15:01:34,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:01:34,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:01:34,549 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 15:01:34,549 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 15:01:34,549 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 15:01:34,549 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 15:01:34,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 15:01:34,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-18 15:01:34,550 INFO L87 Difference]: Start difference. First operand 62 states and 71 transitions. Second operand 4 states. [2018-11-18 15:01:34,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 15:01:34,558 INFO L93 Difference]: Finished difference Result 62 states and 71 transitions. [2018-11-18 15:01:34,558 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 15:01:34,558 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2018-11-18 15:01:34,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 15:01:34,559 INFO L225 Difference]: With dead ends: 62 [2018-11-18 15:01:34,559 INFO L226 Difference]: Without dead ends: 51 [2018-11-18 15:01:34,559 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-18 15:01:34,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-11-18 15:01:34,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-11-18 15:01:34,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-11-18 15:01:34,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 59 transitions. [2018-11-18 15:01:34,565 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 59 transitions. Word has length 17 [2018-11-18 15:01:34,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 15:01:34,565 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 59 transitions. [2018-11-18 15:01:34,565 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 15:01:34,565 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 59 transitions. [2018-11-18 15:01:34,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-18 15:01:34,566 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 15:01:34,566 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 15:01:34,566 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 15:01:34,567 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:01:34,567 INFO L82 PathProgramCache]: Analyzing trace with hash -161410308, now seen corresponding path program 1 times [2018-11-18 15:01:34,567 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 15:01:34,567 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:01:34,568 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 15:01:34,568 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:01:34,568 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 15:01:34,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:01:34,591 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-18 15:01:34,591 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 15:01:34,591 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 15:01:34,592 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 15:01:34,592 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-18 15:01:34,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-18 15:01:34,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-18 15:01:34,593 INFO L87 Difference]: Start difference. First operand 51 states and 59 transitions. Second operand 5 states. [2018-11-18 15:01:34,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 15:01:34,654 INFO L93 Difference]: Finished difference Result 56 states and 65 transitions. [2018-11-18 15:01:34,654 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-18 15:01:34,654 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2018-11-18 15:01:34,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 15:01:34,655 INFO L225 Difference]: With dead ends: 56 [2018-11-18 15:01:34,655 INFO L226 Difference]: Without dead ends: 55 [2018-11-18 15:01:34,656 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-11-18 15:01:34,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-11-18 15:01:34,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 50. [2018-11-18 15:01:34,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-11-18 15:01:34,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 58 transitions. [2018-11-18 15:01:34,663 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 58 transitions. Word has length 22 [2018-11-18 15:01:34,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 15:01:34,664 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 58 transitions. [2018-11-18 15:01:34,664 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-18 15:01:34,664 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 58 transitions. [2018-11-18 15:01:34,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-18 15:01:34,665 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 15:01:34,665 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 15:01:34,665 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 15:01:34,666 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:01:34,666 INFO L82 PathProgramCache]: Analyzing trace with hash -708747219, now seen corresponding path program 1 times [2018-11-18 15:01:34,666 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 15:01:34,666 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:01:34,667 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 15:01:34,667 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:01:34,667 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 15:01:34,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:01:34,705 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-18 15:01:34,705 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 15:01:34,706 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 15:01:34,706 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 15:01:34,706 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-18 15:01:34,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-18 15:01:34,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-18 15:01:34,706 INFO L87 Difference]: Start difference. First operand 50 states and 58 transitions. Second operand 5 states. [2018-11-18 15:01:34,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 15:01:34,776 INFO L93 Difference]: Finished difference Result 52 states and 61 transitions. [2018-11-18 15:01:34,777 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-18 15:01:34,777 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2018-11-18 15:01:34,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 15:01:34,777 INFO L225 Difference]: With dead ends: 52 [2018-11-18 15:01:34,777 INFO L226 Difference]: Without dead ends: 0 [2018-11-18 15:01:34,778 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-11-18 15:01:34,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-18 15:01:34,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-18 15:01:34,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-18 15:01:34,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-18 15:01:34,779 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 23 [2018-11-18 15:01:34,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 15:01:34,779 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 15:01:34,779 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-18 15:01:34,779 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-18 15:01:34,780 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-18 15:01:34,784 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-18 15:01:34,913 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-18 15:01:34,913 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-18 15:01:34,913 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-18 15:01:34,913 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-18 15:01:34,913 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-18 15:01:34,913 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-18 15:01:34,913 INFO L425 ceAbstractionStarter]: For program point L27(line 27) no Hoare annotation was computed. [2018-11-18 15:01:34,913 INFO L425 ceAbstractionStarter]: For program point L27-2(line 27) no Hoare annotation was computed. [2018-11-18 15:01:34,913 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 24 32) no Hoare annotation was computed. [2018-11-18 15:01:34,913 INFO L425 ceAbstractionStarter]: For program point L27-3(line 27) no Hoare annotation was computed. [2018-11-18 15:01:34,913 INFO L425 ceAbstractionStarter]: For program point L27-4(line 27) no Hoare annotation was computed. [2018-11-18 15:01:34,913 INFO L425 ceAbstractionStarter]: For program point L27-6(line 27) no Hoare annotation was computed. [2018-11-18 15:01:34,913 INFO L425 ceAbstractionStarter]: For program point L27-7(lines 27 31) no Hoare annotation was computed. [2018-11-18 15:01:34,913 INFO L425 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 27) no Hoare annotation was computed. [2018-11-18 15:01:34,914 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 24 32) no Hoare annotation was computed. [2018-11-18 15:01:34,914 INFO L425 ceAbstractionStarter]: For program point L30(line 30) no Hoare annotation was computed. [2018-11-18 15:01:34,914 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 24 32) the Hoare annotation is: true [2018-11-18 15:01:34,914 INFO L421 ceAbstractionStarter]: At program point L26(line 26) the Hoare annotation is: (and (<= main_~x~0 2147483647) (<= 0 (+ main_~x~0 2147483648))) [2018-11-18 15:01:34,914 INFO L425 ceAbstractionStarter]: For program point L26-1(line 26) no Hoare annotation was computed. [2018-11-18 15:01:34,914 INFO L425 ceAbstractionStarter]: For program point mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 27) no Hoare annotation was computed. [2018-11-18 15:01:34,914 INFO L425 ceAbstractionStarter]: For program point f91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2018-11-18 15:01:34,914 INFO L425 ceAbstractionStarter]: For program point f91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2018-11-18 15:01:34,914 INFO L425 ceAbstractionStarter]: For program point L19(line 19) no Hoare annotation was computed. [2018-11-18 15:01:34,914 INFO L425 ceAbstractionStarter]: For program point f91EXIT(lines 15 21) no Hoare annotation was computed. [2018-11-18 15:01:34,914 INFO L425 ceAbstractionStarter]: For program point L19-1(line 19) no Hoare annotation was computed. [2018-11-18 15:01:34,915 INFO L425 ceAbstractionStarter]: For program point L17(line 17) no Hoare annotation was computed. [2018-11-18 15:01:34,915 INFO L421 ceAbstractionStarter]: At program point L19-2(line 19) the Hoare annotation is: (or (< (+ |f91_#in~x| 2147483648) 0) (and (<= f91_~x 100) (<= 0 (+ f91_~x 2147483648))) (< 2147483647 |f91_#in~x|)) [2018-11-18 15:01:34,915 INFO L425 ceAbstractionStarter]: For program point L16(lines 16 20) no Hoare annotation was computed. [2018-11-18 15:01:34,915 INFO L425 ceAbstractionStarter]: For program point L17-1(line 17) no Hoare annotation was computed. [2018-11-18 15:01:34,915 INFO L425 ceAbstractionStarter]: For program point L19-3(line 19) no Hoare annotation was computed. [2018-11-18 15:01:34,915 INFO L421 ceAbstractionStarter]: At program point L19-4(line 19) the Hoare annotation is: (or (< (+ |f91_#in~x| 2147483648) 0) (< 2147483647 |f91_#in~x|) (and (<= |f91_#t~ret0| 2147483647) (<= 0 (+ |f91_#t~ret0| 2147483648)) (<= f91_~x 100) (<= 0 (+ f91_~x 2147483648)))) [2018-11-18 15:01:34,915 INFO L425 ceAbstractionStarter]: For program point L19-5(line 19) no Hoare annotation was computed. [2018-11-18 15:01:34,915 INFO L428 ceAbstractionStarter]: At program point f91ENTRY(lines 15 21) the Hoare annotation is: true [2018-11-18 15:01:34,915 INFO L425 ceAbstractionStarter]: For program point f91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 19) no Hoare annotation was computed. [2018-11-18 15:01:34,915 INFO L425 ceAbstractionStarter]: For program point f91FINAL(lines 15 21) no Hoare annotation was computed. [2018-11-18 15:01:34,915 INFO L425 ceAbstractionStarter]: For program point f91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 19) no Hoare annotation was computed. [2018-11-18 15:01:34,917 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 03:01:34 BoogieIcfgContainer [2018-11-18 15:01:34,918 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 15:01:34,918 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 15:01:34,918 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 15:01:34,918 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 15:01:34,918 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 03:01:33" (3/4) ... [2018-11-18 15:01:34,921 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-18 15:01:34,925 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-18 15:01:34,925 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-18 15:01:34,925 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure f91 [2018-11-18 15:01:34,929 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2018-11-18 15:01:34,929 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-11-18 15:01:34,929 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-18 15:01:34,960 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_5abd1723-556b-4a0e-9166-66644205ce58/bin-2019/utaipan/witness.graphml [2018-11-18 15:01:34,960 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 15:01:34,960 INFO L168 Benchmark]: Toolchain (without parser) took 1546.35 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 120.1 MB). Free memory was 954.8 MB in the beginning and 972.2 MB in the end (delta: -17.4 MB). Peak memory consumption was 102.7 MB. Max. memory is 11.5 GB. [2018-11-18 15:01:34,962 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 980.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 15:01:34,962 INFO L168 Benchmark]: CACSL2BoogieTranslator took 140.81 ms. Allocated memory is still 1.0 GB. Free memory was 954.8 MB in the beginning and 942.9 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 11.5 GB. [2018-11-18 15:01:34,962 INFO L168 Benchmark]: Boogie Procedure Inliner took 11.83 ms. Allocated memory is still 1.0 GB. Free memory is still 942.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 15:01:34,963 INFO L168 Benchmark]: Boogie Preprocessor took 11.44 ms. Allocated memory is still 1.0 GB. Free memory was 942.9 MB in the beginning and 940.2 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-18 15:01:34,963 INFO L168 Benchmark]: RCFGBuilder took 209.49 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 120.1 MB). Free memory was 940.2 MB in the beginning and 1.1 GB in the end (delta: -165.6 MB). Peak memory consumption was 14.4 MB. Max. memory is 11.5 GB. [2018-11-18 15:01:34,963 INFO L168 Benchmark]: TraceAbstraction took 1127.37 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 974.9 MB in the end (delta: 131.0 MB). Peak memory consumption was 131.0 MB. Max. memory is 11.5 GB. [2018-11-18 15:01:34,964 INFO L168 Benchmark]: Witness Printer took 42.06 ms. Allocated memory is still 1.1 GB. Free memory was 974.9 MB in the beginning and 972.2 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-18 15:01:34,966 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 980.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 140.81 ms. Allocated memory is still 1.0 GB. Free memory was 954.8 MB in the beginning and 942.9 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 11.83 ms. Allocated memory is still 1.0 GB. Free memory is still 942.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 11.44 ms. Allocated memory is still 1.0 GB. Free memory was 942.9 MB in the beginning and 940.2 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 209.49 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 120.1 MB). Free memory was 940.2 MB in the beginning and 1.1 GB in the end (delta: -165.6 MB). Peak memory consumption was 14.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1127.37 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 974.9 MB in the end (delta: 131.0 MB). Peak memory consumption was 131.0 MB. Max. memory is 11.5 GB. * Witness Printer took 42.06 ms. Allocated memory is still 1.1 GB. Free memory was 974.9 MB in the beginning and 972.2 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 27]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 27]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 19]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 19]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 17]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 17]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 36 locations, 6 error locations. SAFE Result, 1.0s OverallTime, 8 OverallIterations, 3 TraceHistogramMax, 0.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 207 SDtfs, 140 SDslu, 305 SDs, 0 SdLazy, 235 SolverSat, 36 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 39 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=62occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 30 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 32 PreInvPairs, 32 NumberOfFragments, 62 HoareAnnotationTreeSize, 32 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 94 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 114 NumberOfCodeBlocks, 114 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 106 ConstructedInterpolants, 0 QuantifiedInterpolants, 2844 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 17/17 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...