./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/genady.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_20feb1d0-31cf-428c-8352-7024c453a173/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_20feb1d0-31cf-428c-8352-7024c453a173/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_20feb1d0-31cf-428c-8352-7024c453a173/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_20feb1d0-31cf-428c-8352-7024c453a173/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/genady.c -s /tmp/vcloud-vcloud-master/worker/run_dir_20feb1d0-31cf-428c-8352-7024c453a173/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_20feb1d0-31cf-428c-8352-7024c453a173/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 6938b5c805400363799492c040263d9022406929 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 20:39:38,897 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 20:39:38,898 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 20:39:38,906 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 20:39:38,906 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 20:39:38,907 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 20:39:38,908 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 20:39:38,909 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 20:39:38,910 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 20:39:38,911 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 20:39:38,912 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 20:39:38,912 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 20:39:38,913 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 20:39:38,913 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 20:39:38,914 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 20:39:38,915 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 20:39:38,915 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 20:39:38,916 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 20:39:38,917 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 20:39:38,919 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 20:39:38,920 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 20:39:38,920 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 20:39:38,921 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 20:39:38,921 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 20:39:38,923 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 20:39:38,923 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 20:39:38,923 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 20:39:38,924 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 20:39:38,924 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 20:39:38,925 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 20:39:38,925 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 20:39:38,926 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 20:39:38,926 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 20:39:38,926 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 20:39:38,927 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 20:39:38,927 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 20:39:38,928 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 20:39:38,928 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 20:39:38,928 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 20:39:38,928 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 20:39:38,929 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 20:39:38,929 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_20feb1d0-31cf-428c-8352-7024c453a173/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf [2019-12-07 20:39:38,938 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 20:39:38,939 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 20:39:38,939 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 20:39:38,939 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 20:39:38,939 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 20:39:38,939 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 20:39:38,940 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-12-07 20:39:38,940 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 20:39:38,940 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 20:39:38,940 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-12-07 20:39:38,940 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-12-07 20:39:38,940 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 20:39:38,940 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-12-07 20:39:38,940 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-12-07 20:39:38,940 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-12-07 20:39:38,941 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 20:39:38,941 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-12-07 20:39:38,941 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 20:39:38,941 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 20:39:38,941 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 20:39:38,941 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 20:39:38,941 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 20:39:38,942 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-12-07 20:39:38,942 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 20:39:38,942 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 20:39:38,942 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 20:39:38,942 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 20:39:38,942 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 20:39:38,942 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 20:39:38,942 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 20:39:38,943 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 20:39:38,943 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 20:39:38,943 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 20:39:38,943 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-12-07 20:39:38,943 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 20:39:38,943 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 20:39:38,943 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 20:39:38,943 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 20:39:38,944 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_20feb1d0-31cf-428c-8352-7024c453a173/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 -> 6938b5c805400363799492c040263d9022406929 [2019-12-07 20:39:39,047 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 20:39:39,054 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 20:39:39,056 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 20:39:39,057 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 20:39:39,058 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 20:39:39,058 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_20feb1d0-31cf-428c-8352-7024c453a173/bin/utaipan/../../sv-benchmarks/c/termination-crafted-lit/genady.c [2019-12-07 20:39:39,095 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_20feb1d0-31cf-428c-8352-7024c453a173/bin/utaipan/data/97a424f9a/2dafbcd3eff54008aaf18160cbcff545/FLAGd61edc4db [2019-12-07 20:39:39,523 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 20:39:39,523 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_20feb1d0-31cf-428c-8352-7024c453a173/sv-benchmarks/c/termination-crafted-lit/genady.c [2019-12-07 20:39:39,527 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_20feb1d0-31cf-428c-8352-7024c453a173/bin/utaipan/data/97a424f9a/2dafbcd3eff54008aaf18160cbcff545/FLAGd61edc4db [2019-12-07 20:39:39,536 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_20feb1d0-31cf-428c-8352-7024c453a173/bin/utaipan/data/97a424f9a/2dafbcd3eff54008aaf18160cbcff545 [2019-12-07 20:39:39,537 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 20:39:39,538 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 20:39:39,539 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 20:39:39,539 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 20:39:39,541 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 20:39:39,542 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 08:39:39" (1/1) ... [2019-12-07 20:39:39,543 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34c8857b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:39:39, skipping insertion in model container [2019-12-07 20:39:39,543 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 08:39:39" (1/1) ... [2019-12-07 20:39:39,548 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 20:39:39,558 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 20:39:39,651 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 20:39:39,654 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 20:39:39,698 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 20:39:39,710 INFO L208 MainTranslator]: Completed translation [2019-12-07 20:39:39,711 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:39:39 WrapperNode [2019-12-07 20:39:39,711 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 20:39:39,711 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 20:39:39,712 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 20:39:39,712 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 20:39:39,719 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:39:39" (1/1) ... [2019-12-07 20:39:39,722 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:39:39" (1/1) ... [2019-12-07 20:39:39,734 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 20:39:39,734 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 20:39:39,734 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 20:39:39,734 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 20:39:39,742 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:39:39" (1/1) ... [2019-12-07 20:39:39,743 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:39:39" (1/1) ... [2019-12-07 20:39:39,743 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:39:39" (1/1) ... [2019-12-07 20:39:39,743 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:39:39" (1/1) ... [2019-12-07 20:39:39,744 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:39:39" (1/1) ... [2019-12-07 20:39:39,747 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:39:39" (1/1) ... [2019-12-07 20:39:39,748 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:39:39" (1/1) ... [2019-12-07 20:39:39,749 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 20:39:39,749 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 20:39:39,749 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 20:39:39,749 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 20:39:39,749 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:39:39" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_20feb1d0-31cf-428c-8352-7024c453a173/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 20:39:39,787 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 20:39:39,787 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 20:39:39,888 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 20:39:39,889 INFO L287 CfgBuilder]: Removed 5 assume(true) statements. [2019-12-07 20:39:39,889 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 08:39:39 BoogieIcfgContainer [2019-12-07 20:39:39,889 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 20:39:39,890 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 20:39:39,890 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 20:39:39,892 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 20:39:39,892 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 08:39:39" (1/3) ... [2019-12-07 20:39:39,893 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b7631d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 08:39:39, skipping insertion in model container [2019-12-07 20:39:39,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:39:39" (2/3) ... [2019-12-07 20:39:39,893 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b7631d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 08:39:39, skipping insertion in model container [2019-12-07 20:39:39,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 08:39:39" (3/3) ... [2019-12-07 20:39:39,894 INFO L109 eAbstractionObserver]: Analyzing ICFG genady.c [2019-12-07 20:39:39,901 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 20:39:39,905 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2019-12-07 20:39:39,912 INFO L249 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-12-07 20:39:39,927 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 20:39:39,927 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 20:39:39,927 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 20:39:39,927 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 20:39:39,927 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 20:39:39,927 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 20:39:39,927 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 20:39:39,927 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 20:39:39,937 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2019-12-07 20:39:39,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2019-12-07 20:39:39,940 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 20:39:39,940 INFO L410 BasicCegarLoop]: trace histogram [1, 1] [2019-12-07 20:39:39,941 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 20:39:39,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 20:39:39,945 INFO L82 PathProgramCache]: Analyzing trace with hash 998, now seen corresponding path program 1 times [2019-12-07 20:39:39,950 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 20:39:39,950 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960086628] [2019-12-07 20:39:39,951 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 20:39:40,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 20:39:40,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 20:39:40,035 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960086628] [2019-12-07 20:39:40,036 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 20:39:40,036 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-12-07 20:39:40,037 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87749585] [2019-12-07 20:39:40,040 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 20:39:40,040 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 20:39:40,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 20:39:40,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 20:39:40,050 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 3 states. [2019-12-07 20:39:40,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 20:39:40,083 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2019-12-07 20:39:40,083 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 20:39:40,084 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 2 [2019-12-07 20:39:40,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 20:39:40,090 INFO L225 Difference]: With dead ends: 18 [2019-12-07 20:39:40,090 INFO L226 Difference]: Without dead ends: 13 [2019-12-07 20:39:40,092 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 20:39:40,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-12-07 20:39:40,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2019-12-07 20:39:40,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-12-07 20:39:40,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2019-12-07 20:39:40,113 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 2 [2019-12-07 20:39:40,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 20:39:40,114 INFO L462 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2019-12-07 20:39:40,114 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 20:39:40,114 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2019-12-07 20:39:40,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-12-07 20:39:40,114 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 20:39:40,114 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-12-07 20:39:40,114 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 20:39:40,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 20:39:40,115 INFO L82 PathProgramCache]: Analyzing trace with hash 30977, now seen corresponding path program 1 times [2019-12-07 20:39:40,115 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 20:39:40,115 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226737262] [2019-12-07 20:39:40,115 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 20:39:40,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 20:39:40,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 20:39:40,126 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226737262] [2019-12-07 20:39:40,127 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 20:39:40,127 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-12-07 20:39:40,127 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281278200] [2019-12-07 20:39:40,128 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 20:39:40,128 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 20:39:40,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 20:39:40,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 20:39:40,128 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 3 states. [2019-12-07 20:39:40,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 20:39:40,154 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2019-12-07 20:39:40,155 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 20:39:40,155 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2019-12-07 20:39:40,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 20:39:40,155 INFO L225 Difference]: With dead ends: 21 [2019-12-07 20:39:40,155 INFO L226 Difference]: Without dead ends: 20 [2019-12-07 20:39:40,156 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 20:39:40,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-12-07 20:39:40,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 15. [2019-12-07 20:39:40,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-12-07 20:39:40,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2019-12-07 20:39:40,159 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 3 [2019-12-07 20:39:40,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 20:39:40,159 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2019-12-07 20:39:40,159 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 20:39:40,159 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2019-12-07 20:39:40,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-12-07 20:39:40,159 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 20:39:40,160 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-12-07 20:39:40,160 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 20:39:40,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 20:39:40,160 INFO L82 PathProgramCache]: Analyzing trace with hash 29770307, now seen corresponding path program 1 times [2019-12-07 20:39:40,160 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 20:39:40,160 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947095372] [2019-12-07 20:39:40,160 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 20:39:40,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 20:39:40,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 20:39:40,172 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947095372] [2019-12-07 20:39:40,172 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 20:39:40,172 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-12-07 20:39:40,172 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493231922] [2019-12-07 20:39:40,172 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 20:39:40,172 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 20:39:40,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 20:39:40,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 20:39:40,173 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 3 states. [2019-12-07 20:39:40,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 20:39:40,187 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2019-12-07 20:39:40,188 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 20:39:40,188 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2019-12-07 20:39:40,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 20:39:40,188 INFO L225 Difference]: With dead ends: 19 [2019-12-07 20:39:40,188 INFO L226 Difference]: Without dead ends: 18 [2019-12-07 20:39:40,189 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 20:39:40,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-12-07 20:39:40,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2019-12-07 20:39:40,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-12-07 20:39:40,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2019-12-07 20:39:40,192 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 5 [2019-12-07 20:39:40,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 20:39:40,192 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2019-12-07 20:39:40,192 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 20:39:40,192 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2019-12-07 20:39:40,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-12-07 20:39:40,192 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 20:39:40,192 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-12-07 20:39:40,193 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 20:39:40,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 20:39:40,193 INFO L82 PathProgramCache]: Analyzing trace with hash 922879565, now seen corresponding path program 1 times [2019-12-07 20:39:40,193 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 20:39:40,193 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170579785] [2019-12-07 20:39:40,193 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 20:39:40,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 20:39:40,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 20:39:40,205 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170579785] [2019-12-07 20:39:40,205 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 20:39:40,206 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-12-07 20:39:40,206 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073052709] [2019-12-07 20:39:40,206 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 20:39:40,206 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 20:39:40,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 20:39:40,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 20:39:40,207 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 3 states. [2019-12-07 20:39:40,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 20:39:40,217 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2019-12-07 20:39:40,217 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 20:39:40,217 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2019-12-07 20:39:40,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 20:39:40,218 INFO L225 Difference]: With dead ends: 17 [2019-12-07 20:39:40,218 INFO L226 Difference]: Without dead ends: 16 [2019-12-07 20:39:40,218 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 20:39:40,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-12-07 20:39:40,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-12-07 20:39:40,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-12-07 20:39:40,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2019-12-07 20:39:40,222 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 6 [2019-12-07 20:39:40,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 20:39:40,223 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2019-12-07 20:39:40,223 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 20:39:40,223 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2019-12-07 20:39:40,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-12-07 20:39:40,223 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 20:39:40,223 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-12-07 20:39:40,224 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 20:39:40,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 20:39:40,224 INFO L82 PathProgramCache]: Analyzing trace with hash -1455504507, now seen corresponding path program 1 times [2019-12-07 20:39:40,224 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 20:39:40,225 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640652322] [2019-12-07 20:39:40,225 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 20:39:40,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 20:39:40,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 20:39:40,240 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640652322] [2019-12-07 20:39:40,240 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 20:39:40,240 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-12-07 20:39:40,241 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264328910] [2019-12-07 20:39:40,241 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 20:39:40,241 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 20:39:40,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 20:39:40,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 20:39:40,241 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 3 states. [2019-12-07 20:39:40,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 20:39:40,255 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2019-12-07 20:39:40,255 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 20:39:40,255 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2019-12-07 20:39:40,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 20:39:40,256 INFO L225 Difference]: With dead ends: 16 [2019-12-07 20:39:40,256 INFO L226 Difference]: Without dead ends: 15 [2019-12-07 20:39:40,256 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 20:39:40,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-12-07 20:39:40,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2019-12-07 20:39:40,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-12-07 20:39:40,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2019-12-07 20:39:40,258 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 7 [2019-12-07 20:39:40,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 20:39:40,258 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2019-12-07 20:39:40,259 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 20:39:40,259 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2019-12-07 20:39:40,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-07 20:39:40,259 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 20:39:40,259 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 20:39:40,259 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 20:39:40,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 20:39:40,259 INFO L82 PathProgramCache]: Analyzing trace with hash 2124000591, now seen corresponding path program 1 times [2019-12-07 20:39:40,260 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 20:39:40,260 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636429113] [2019-12-07 20:39:40,260 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 20:39:40,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 20:39:40,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 20:39:40,274 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636429113] [2019-12-07 20:39:40,274 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 20:39:40,274 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-12-07 20:39:40,274 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923999067] [2019-12-07 20:39:40,275 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 20:39:40,275 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 20:39:40,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 20:39:40,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 20:39:40,275 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 3 states. [2019-12-07 20:39:40,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 20:39:40,293 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2019-12-07 20:39:40,293 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 20:39:40,293 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-12-07 20:39:40,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 20:39:40,293 INFO L225 Difference]: With dead ends: 19 [2019-12-07 20:39:40,293 INFO L226 Difference]: Without dead ends: 18 [2019-12-07 20:39:40,294 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 20:39:40,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-12-07 20:39:40,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2019-12-07 20:39:40,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-12-07 20:39:40,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2019-12-07 20:39:40,296 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 8 [2019-12-07 20:39:40,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 20:39:40,296 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2019-12-07 20:39:40,296 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 20:39:40,297 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2019-12-07 20:39:40,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 20:39:40,297 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 20:39:40,297 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 20:39:40,297 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 20:39:40,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 20:39:40,297 INFO L82 PathProgramCache]: Analyzing trace with hash 1055103537, now seen corresponding path program 1 times [2019-12-07 20:39:40,297 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 20:39:40,298 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241698830] [2019-12-07 20:39:40,298 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 20:39:40,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 20:39:40,323 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 20:39:40,324 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241698830] [2019-12-07 20:39:40,324 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [704019096] [2019-12-07 20:39:40,324 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_20feb1d0-31cf-428c-8352-7024c453a173/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 20:39:40,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 20:39:40,350 INFO L264 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 20:39:40,353 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 20:39:40,398 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 20:39:40,399 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 20:39:40,431 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 20:39:40,432 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2097313014] [2019-12-07 20:39:40,446 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2019-12-07 20:39:40,447 INFO L166 IcfgInterpreter]: Building call graph [2019-12-07 20:39:40,450 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-12-07 20:39:40,455 INFO L176 IcfgInterpreter]: Starting interpretation [2019-12-07 20:39:40,455 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-12-07 20:39:40,574 INFO L180 IcfgInterpreter]: Interpretation finished [2019-12-07 20:39:40,714 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 20:39:40,714 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-12-07 20:39:40,714 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 4] total 11 [2019-12-07 20:39:40,714 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241483055] [2019-12-07 20:39:40,715 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-12-07 20:39:40,715 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 20:39:40,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-12-07 20:39:40,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=253, Unknown=0, NotChecked=0, Total=342 [2019-12-07 20:39:40,716 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 13 states. [2019-12-07 20:39:40,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 20:39:40,817 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2019-12-07 20:39:40,818 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-12-07 20:39:40,818 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 10 [2019-12-07 20:39:40,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 20:39:40,818 INFO L225 Difference]: With dead ends: 30 [2019-12-07 20:39:40,818 INFO L226 Difference]: Without dead ends: 28 [2019-12-07 20:39:40,819 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=170, Invalid=430, Unknown=0, NotChecked=0, Total=600 [2019-12-07 20:39:40,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-12-07 20:39:40,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 24. [2019-12-07 20:39:40,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-12-07 20:39:40,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2019-12-07 20:39:40,822 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 10 [2019-12-07 20:39:40,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 20:39:40,822 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2019-12-07 20:39:40,822 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-12-07 20:39:40,822 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2019-12-07 20:39:40,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-12-07 20:39:40,822 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 20:39:40,822 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2019-12-07 20:39:41,023 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 20:39:41,024 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 20:39:41,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 20:39:41,024 INFO L82 PathProgramCache]: Analyzing trace with hash 342218611, now seen corresponding path program 1 times [2019-12-07 20:39:41,025 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 20:39:41,025 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457114658] [2019-12-07 20:39:41,025 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 20:39:41,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 20:39:41,055 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 20:39:41,055 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457114658] [2019-12-07 20:39:41,055 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1074615445] [2019-12-07 20:39:41,055 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_20feb1d0-31cf-428c-8352-7024c453a173/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 20:39:41,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 20:39:41,083 INFO L264 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 3 conjunts are in the unsatisfiable core [2019-12-07 20:39:41,084 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 20:39:41,086 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 20:39:41,087 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 20:39:41,098 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 20:39:41,099 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2143286047] [2019-12-07 20:39:41,100 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2019-12-07 20:39:41,100 INFO L166 IcfgInterpreter]: Building call graph [2019-12-07 20:39:41,100 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-12-07 20:39:41,100 INFO L176 IcfgInterpreter]: Starting interpretation [2019-12-07 20:39:41,100 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-12-07 20:39:41,154 INFO L180 IcfgInterpreter]: Interpretation finished [2019-12-07 20:39:41,262 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2019-12-07 20:39:41,263 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [2, 2, 2] total 9 [2019-12-07 20:39:41,263 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529771420] [2019-12-07 20:39:41,264 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-12-07 20:39:41,264 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 20:39:41,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-12-07 20:39:41,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2019-12-07 20:39:41,264 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand 7 states. [2019-12-07 20:39:41,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 20:39:41,310 INFO L93 Difference]: Finished difference Result 24 states and 25 transitions. [2019-12-07 20:39:41,310 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 20:39:41,310 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2019-12-07 20:39:41,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 20:39:41,310 INFO L225 Difference]: With dead ends: 24 [2019-12-07 20:39:41,310 INFO L226 Difference]: Without dead ends: 0 [2019-12-07 20:39:41,311 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2019-12-07 20:39:41,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-07 20:39:41,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-07 20:39:41,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-07 20:39:41,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-07 20:39:41,312 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2019-12-07 20:39:41,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 20:39:41,312 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 20:39:41,312 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-12-07 20:39:41,312 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-07 20:39:41,312 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-07 20:39:41,513 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 20:39:41,516 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-12-07 20:39:41,584 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 15) no Hoare annotation was computed. [2019-12-07 20:39:41,584 INFO L246 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-12-07 20:39:41,584 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 16) no Hoare annotation was computed. [2019-12-07 20:39:41,585 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2019-12-07 20:39:41,585 INFO L246 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2019-12-07 20:39:41,585 INFO L246 CegarLoopResult]: For program point L17-1(line 17) no Hoare annotation was computed. [2019-12-07 20:39:41,585 INFO L246 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2019-12-07 20:39:41,585 INFO L246 CegarLoopResult]: For program point L15-2(lines 15 18) no Hoare annotation was computed. [2019-12-07 20:39:41,585 INFO L242 CegarLoopResult]: At program point L15-4(lines 15 18) the Hoare annotation is: (and (<= ULTIMATE.start_main_~j~0 (+ ULTIMATE.start_main_~i~0 1)) (or (and (<= ULTIMATE.start_main_~i~0 9999) (<= 2 ULTIMATE.start_main_~j~0)) (and (<= 1 ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~j~0 1) (<= ULTIMATE.start_main_~i~0 10000) (<= 10000 ULTIMATE.start_main_~i~0)))) [2019-12-07 20:39:41,585 INFO L242 CegarLoopResult]: At program point L15-5(lines 15 18) the Hoare annotation is: (<= ULTIMATE.start_main_~i~0 (+ ULTIMATE.start_main_~j~0 9999)) [2019-12-07 20:39:41,586 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 15) no Hoare annotation was computed. [2019-12-07 20:39:41,586 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 16) no Hoare annotation was computed. [2019-12-07 20:39:41,586 INFO L246 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-12-07 20:39:41,586 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2019-12-07 20:39:41,586 INFO L246 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2019-12-07 20:39:41,586 INFO L246 CegarLoopResult]: For program point L16-1(line 16) no Hoare annotation was computed. [2019-12-07 20:39:41,603 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 08:39:41 BoogieIcfgContainer [2019-12-07 20:39:41,603 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 20:39:41,603 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 20:39:41,603 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 20:39:41,603 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 20:39:41,604 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 08:39:39" (3/4) ... [2019-12-07 20:39:41,607 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-12-07 20:39:41,616 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2019-12-07 20:39:41,616 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-12-07 20:39:41,617 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-12-07 20:39:41,653 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_20feb1d0-31cf-428c-8352-7024c453a173/bin/utaipan/witness.graphml [2019-12-07 20:39:41,654 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 20:39:41,655 INFO L168 Benchmark]: Toolchain (without parser) took 2116.47 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 92.3 MB). Free memory was 949.0 MB in the beginning and 856.4 MB in the end (delta: 92.6 MB). Peak memory consumption was 184.9 MB. Max. memory is 11.5 GB. [2019-12-07 20:39:41,656 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 964.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 20:39:41,656 INFO L168 Benchmark]: CACSL2BoogieTranslator took 172.26 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 92.3 MB). Free memory was 949.0 MB in the beginning and 1.1 GB in the end (delta: -138.0 MB). Peak memory consumption was 23.5 MB. Max. memory is 11.5 GB. [2019-12-07 20:39:41,657 INFO L168 Benchmark]: Boogie Procedure Inliner took 22.54 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 20:39:41,657 INFO L168 Benchmark]: Boogie Preprocessor took 14.41 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 20:39:41,657 INFO L168 Benchmark]: RCFGBuilder took 140.66 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. [2019-12-07 20:39:41,658 INFO L168 Benchmark]: TraceAbstraction took 1712.85 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 856.4 MB in the end (delta: 213.6 MB). Peak memory consumption was 213.6 MB. Max. memory is 11.5 GB. [2019-12-07 20:39:41,658 INFO L168 Benchmark]: Witness Printer took 50.46 ms. Allocated memory is still 1.1 GB. Free memory is still 856.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 20:39:41,660 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 964.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 172.26 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 92.3 MB). Free memory was 949.0 MB in the beginning and 1.1 GB in the end (delta: -138.0 MB). Peak memory consumption was 23.5 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 22.54 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 14.41 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 140.66 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1712.85 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 856.4 MB in the end (delta: 213.6 MB). Peak memory consumption was 213.6 MB. Max. memory is 11.5 GB. * Witness Printer took 50.46 ms. Allocated memory is still 1.1 GB. Free memory is still 856.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 16]: 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 - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 16]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 15]: 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 - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: i <= j + 9999 - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: j <= i + 1 && ((i <= 9999 && 2 <= j) || (((1 <= j && j <= 1) && i <= 10000) && 10000 <= i)) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 6 error locations. Result: SAFE, OverallTime: 1.5s, OverallIterations: 8, TraceHistogramMax: 2, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 32 SDtfs, 95 SDslu, 7 SDs, 0 SdLazy, 158 SolverSat, 37 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 80 GetRequests, 36 SyntacticMatches, 5 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=7, 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, 8 MinimizatonAttempts, 10 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 5 NumberOfFragments, 32 HoareAnnotationTreeSize, 2 FomulaSimplifications, 18 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 116 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 75 NumberOfCodeBlocks, 75 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 85 ConstructedInterpolants, 0 QuantifiedInterpolants, 2725 SizeOfPredicates, 1 NumberOfNonLiveVariables, 40 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 12 InterpolantComputations, 6 PerfectInterpolantSequences, 0/18 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: OVERALL_TIME[ms]: 55, ICFG_INTERPRETER_ENTERED_PROCEDURES: 1, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 8, DAG_INTERPRETER_EARLY_EXITS: 0, TOOLS_POST_APPLICATIONS: 30, TOOLS_POST_TIME[ms]: 10, TOOLS_POST_CALL_APPLICATIONS: 0, TOOLS_POST_CALL_TIME[ms]: 0, TOOLS_POST_RETURN_APPLICATIONS: 0, TOOLS_POST_RETURN_TIME[ms]: 0, TOOLS_QUANTIFIERELIM_APPLICATIONS: 30, TOOLS_QUANTIFIERELIM_TIME[ms]: 6, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 1, FLUID_QUERY_TIME[ms]: 1, FLUID_QUERIES: 47, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 1, DOMAIN_JOIN_TIME[ms]: 7, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME[ms]: 0, DOMAIN_WIDEN_APPLICATIONS: 2, DOMAIN_WIDEN_TIME[ms]: 23, DOMAIN_ISSUBSETEQ_APPLICATIONS: 3, DOMAIN_ISSUBSETEQ_TIME[ms]: 4, DOMAIN_ISBOTTOM_APPLICATIONS: 8, DOMAIN_ISBOTTOM_TIME[ms]: 4, LOOP_SUMMARIZER_APPLICATIONS: 1, LOOP_SUMMARIZER_CACHE_MISSES: 1, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 36, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 36, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 3, CALL_SUMMARIZER_APPLICATIONS: 0, CALL_SUMMARIZER_CACHE_MISSES: 0, CALL_SUMMARIZER_OVERALL_TIME[ms]: 0, CALL_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 0, PROCEDURE_GRAPH_BUILDER_TIME[ms]: 0, PATH_EXPR_TIME[ms]: 0, REGEX_TO_DAG_TIME[ms]: 0, DAG_COMPRESSION_TIME[ms]: 2, DAG_COMPRESSION_PROCESSED_NODES: 73, DAG_COMPRESSION_RETAINED_NODES: 31, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...