./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted/Arrays03-ValueRestictsIndex-2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_6844a6ff-e9e7-4eaf-9bd8-74f5cbd184f7/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_6844a6ff-e9e7-4eaf-9bd8-74f5cbd184f7/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_6844a6ff-e9e7-4eaf-9bd8-74f5cbd184f7/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_6844a6ff-e9e7-4eaf-9bd8-74f5cbd184f7/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted/Arrays03-ValueRestictsIndex-2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_6844a6ff-e9e7-4eaf-9bd8-74f5cbd184f7/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_6844a6ff-e9e7-4eaf-9bd8-74f5cbd184f7/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 282a32bc5fb3d70423f87a450340f7a26ab0f093 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-6b5699a [2019-11-26 02:16:39,654 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 02:16:39,655 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 02:16:39,666 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 02:16:39,666 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 02:16:39,667 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 02:16:39,668 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 02:16:39,670 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 02:16:39,672 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 02:16:39,673 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 02:16:39,673 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 02:16:39,675 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 02:16:39,675 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 02:16:39,676 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 02:16:39,677 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 02:16:39,678 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 02:16:39,678 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 02:16:39,679 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 02:16:39,681 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 02:16:39,683 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 02:16:39,684 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 02:16:39,685 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 02:16:39,686 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 02:16:39,687 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 02:16:39,689 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 02:16:39,690 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 02:16:39,690 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 02:16:39,691 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 02:16:39,691 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 02:16:39,692 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 02:16:39,692 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 02:16:39,693 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 02:16:39,693 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 02:16:39,694 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 02:16:39,695 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 02:16:39,695 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 02:16:39,695 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 02:16:39,696 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 02:16:39,696 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 02:16:39,696 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 02:16:39,697 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 02:16:39,698 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_6844a6ff-e9e7-4eaf-9bd8-74f5cbd184f7/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf [2019-11-26 02:16:39,710 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 02:16:39,711 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 02:16:39,711 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 02:16:39,711 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 02:16:39,712 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 02:16:39,712 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 02:16:39,712 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-26 02:16:39,712 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 02:16:39,712 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 02:16:39,712 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-26 02:16:39,713 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-26 02:16:39,713 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 02:16:39,713 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-26 02:16:39,713 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-26 02:16:39,713 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-26 02:16:39,714 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 02:16:39,714 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-26 02:16:39,714 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-26 02:16:39,715 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 02:16:39,715 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-26 02:16:39,715 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 02:16:39,715 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-26 02:16:39,715 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-11-26 02:16:39,715 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-26 02:16:39,716 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-26 02:16:39,716 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 02:16:39,716 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 02:16:39,716 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 02:16:39,716 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:16:39,717 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 02:16:39,717 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 02:16:39,717 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-26 02:16:39,717 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-26 02:16:39,717 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-26 02:16:39,717 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-26 02:16:39,718 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 02:16:39,718 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_6844a6ff-e9e7-4eaf-9bd8-74f5cbd184f7/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 -> 282a32bc5fb3d70423f87a450340f7a26ab0f093 [2019-11-26 02:16:39,851 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 02:16:39,864 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 02:16:39,866 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 02:16:39,868 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 02:16:39,868 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 02:16:39,869 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_6844a6ff-e9e7-4eaf-9bd8-74f5cbd184f7/bin/utaipan/../../sv-benchmarks/c/termination-crafted/Arrays03-ValueRestictsIndex-2.c [2019-11-26 02:16:39,929 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6844a6ff-e9e7-4eaf-9bd8-74f5cbd184f7/bin/utaipan/data/f6b4ee17b/c2ec30ee9dc0449cb8f3bcec05cd6a38/FLAGc81727f03 [2019-11-26 02:16:40,316 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 02:16:40,316 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_6844a6ff-e9e7-4eaf-9bd8-74f5cbd184f7/sv-benchmarks/c/termination-crafted/Arrays03-ValueRestictsIndex-2.c [2019-11-26 02:16:40,321 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6844a6ff-e9e7-4eaf-9bd8-74f5cbd184f7/bin/utaipan/data/f6b4ee17b/c2ec30ee9dc0449cb8f3bcec05cd6a38/FLAGc81727f03 [2019-11-26 02:16:40,764 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_6844a6ff-e9e7-4eaf-9bd8-74f5cbd184f7/bin/utaipan/data/f6b4ee17b/c2ec30ee9dc0449cb8f3bcec05cd6a38 [2019-11-26 02:16:40,767 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 02:16:40,768 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 02:16:40,776 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 02:16:40,776 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 02:16:40,779 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 02:16:40,780 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:16:40" (1/1) ... [2019-11-26 02:16:40,782 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c9db42a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:16:40, skipping insertion in model container [2019-11-26 02:16:40,782 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:16:40" (1/1) ... [2019-11-26 02:16:40,789 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 02:16:40,804 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:16:40,977 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:16:40,981 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 02:16:41,064 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:16:41,081 INFO L205 MainTranslator]: Completed translation [2019-11-26 02:16:41,082 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:16:41 WrapperNode [2019-11-26 02:16:41,082 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 02:16:41,082 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 02:16:41,083 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 02:16:41,083 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 02:16:41,090 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:16:41" (1/1) ... [2019-11-26 02:16:41,097 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:16:41" (1/1) ... [2019-11-26 02:16:41,118 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 02:16:41,119 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 02:16:41,119 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 02:16:41,119 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 02:16:41,128 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:16:41" (1/1) ... [2019-11-26 02:16:41,128 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:16:41" (1/1) ... [2019-11-26 02:16:41,140 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:16:41" (1/1) ... [2019-11-26 02:16:41,141 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:16:41" (1/1) ... [2019-11-26 02:16:41,145 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:16:41" (1/1) ... [2019-11-26 02:16:41,149 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:16:41" (1/1) ... [2019-11-26 02:16:41,150 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:16:41" (1/1) ... [2019-11-26 02:16:41,153 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 02:16:41,161 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 02:16:41,162 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 02:16:41,162 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 02:16:41,163 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:16:41" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6844a6ff-e9e7-4eaf-9bd8-74f5cbd184f7/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:16:41,213 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-26 02:16:41,213 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 02:16:41,214 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 02:16:41,214 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-26 02:16:41,214 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-26 02:16:41,214 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-26 02:16:41,605 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 02:16:41,605 INFO L284 CfgBuilder]: Removed 6 assume(true) statements. [2019-11-26 02:16:41,606 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:16:41 BoogieIcfgContainer [2019-11-26 02:16:41,606 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 02:16:41,607 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 02:16:41,607 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 02:16:41,610 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 02:16:41,611 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 02:16:40" (1/3) ... [2019-11-26 02:16:41,612 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47b955a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:16:41, skipping insertion in model container [2019-11-26 02:16:41,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:16:41" (2/3) ... [2019-11-26 02:16:41,622 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47b955a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:16:41, skipping insertion in model container [2019-11-26 02:16:41,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:16:41" (3/3) ... [2019-11-26 02:16:41,624 INFO L109 eAbstractionObserver]: Analyzing ICFG Arrays03-ValueRestictsIndex-2.c [2019-11-26 02:16:41,633 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 02:16:41,643 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-11-26 02:16:41,655 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-11-26 02:16:41,679 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 02:16:41,679 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-26 02:16:41,679 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 02:16:41,680 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 02:16:41,680 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 02:16:41,680 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 02:16:41,680 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 02:16:41,680 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 02:16:41,697 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2019-11-26 02:16:41,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-11-26 02:16:41,702 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:16:41,703 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-11-26 02:16:41,704 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-26 02:16:41,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:16:41,709 INFO L82 PathProgramCache]: Analyzing trace with hash 87402, now seen corresponding path program 1 times [2019-11-26 02:16:41,717 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:16:41,718 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285219946] [2019-11-26 02:16:41,719 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:16:41,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:16:41,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:16:41,905 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285219946] [2019-11-26 02:16:41,910 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:16:41,910 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-26 02:16:41,911 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043843914] [2019-11-26 02:16:41,914 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-26 02:16:41,914 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:16:41,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-26 02:16:41,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-26 02:16:41,925 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 4 states. [2019-11-26 02:16:42,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:16:42,000 INFO L93 Difference]: Finished difference Result 29 states and 35 transitions. [2019-11-26 02:16:42,000 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-26 02:16:42,002 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 3 [2019-11-26 02:16:42,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:16:42,009 INFO L225 Difference]: With dead ends: 29 [2019-11-26 02:16:42,009 INFO L226 Difference]: Without dead ends: 16 [2019-11-26 02:16:42,012 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-26 02:16:42,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-11-26 02:16:42,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-11-26 02:16:42,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-11-26 02:16:42,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2019-11-26 02:16:42,037 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 3 [2019-11-26 02:16:42,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:16:42,038 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2019-11-26 02:16:42,038 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-26 02:16:42,038 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2019-11-26 02:16:42,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-26 02:16:42,038 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:16:42,038 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2019-11-26 02:16:42,039 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-26 02:16:42,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:16:42,039 INFO L82 PathProgramCache]: Analyzing trace with hash -1691127274, now seen corresponding path program 1 times [2019-11-26 02:16:42,039 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:16:42,039 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179824975] [2019-11-26 02:16:42,039 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:16:42,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:16:42,070 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-26 02:16:42,070 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179824975] [2019-11-26 02:16:42,071 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:16:42,071 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-26 02:16:42,071 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344978432] [2019-11-26 02:16:42,072 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-26 02:16:42,072 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:16:42,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-26 02:16:42,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-26 02:16:42,072 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand 3 states. [2019-11-26 02:16:42,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:16:42,082 INFO L93 Difference]: Finished difference Result 16 states and 17 transitions. [2019-11-26 02:16:42,082 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-26 02:16:42,082 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2019-11-26 02:16:42,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:16:42,083 INFO L225 Difference]: With dead ends: 16 [2019-11-26 02:16:42,083 INFO L226 Difference]: Without dead ends: 15 [2019-11-26 02:16:42,084 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-26 02:16:42,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-11-26 02:16:42,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2019-11-26 02:16:42,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-11-26 02:16:42,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2019-11-26 02:16:42,087 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 6 [2019-11-26 02:16:42,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:16:42,087 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2019-11-26 02:16:42,088 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-26 02:16:42,088 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2019-11-26 02:16:42,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-26 02:16:42,088 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:16:42,088 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1] [2019-11-26 02:16:42,089 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-26 02:16:42,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:16:42,089 INFO L82 PathProgramCache]: Analyzing trace with hash -885337896, now seen corresponding path program 1 times [2019-11-26 02:16:42,089 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:16:42,089 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104590964] [2019-11-26 02:16:42,089 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:16:42,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:16:42,178 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:16:42,178 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104590964] [2019-11-26 02:16:42,178 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1046327220] [2019-11-26 02:16:42,182 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6844a6ff-e9e7-4eaf-9bd8-74f5cbd184f7/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 [2019-11-26 02:16:42,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:16:42,230 INFO L255 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-26 02:16:42,235 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:16:42,278 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:16:42,278 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:16:42,354 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:16:42,354 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-26 02:16:42,354 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [4] total 10 [2019-11-26 02:16:42,355 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487610758] [2019-11-26 02:16:42,355 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-26 02:16:42,355 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:16:42,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-26 02:16:42,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2019-11-26 02:16:42,356 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 10 states. [2019-11-26 02:16:42,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:16:42,406 INFO L93 Difference]: Finished difference Result 15 states and 16 transitions. [2019-11-26 02:16:42,407 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-26 02:16:42,407 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 7 [2019-11-26 02:16:42,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:16:42,408 INFO L225 Difference]: With dead ends: 15 [2019-11-26 02:16:42,408 INFO L226 Difference]: Without dead ends: 14 [2019-11-26 02:16:42,408 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2019-11-26 02:16:42,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-11-26 02:16:42,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 12. [2019-11-26 02:16:42,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-11-26 02:16:42,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2019-11-26 02:16:42,411 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 7 [2019-11-26 02:16:42,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:16:42,412 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2019-11-26 02:16:42,412 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-26 02:16:42,412 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2019-11-26 02:16:42,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-26 02:16:42,413 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:16:42,413 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:16:42,613 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:16:42,614 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-26 02:16:42,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:16:42,614 INFO L82 PathProgramCache]: Analyzing trace with hash -402840199, now seen corresponding path program 1 times [2019-11-26 02:16:42,614 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:16:42,614 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324559718] [2019-11-26 02:16:42,615 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:16:42,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:16:42,668 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:16:42,668 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324559718] [2019-11-26 02:16:42,669 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [186307565] [2019-11-26 02:16:42,669 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6844a6ff-e9e7-4eaf-9bd8-74f5cbd184f7/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 [2019-11-26 02:16:42,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:16:42,711 INFO L255 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-26 02:16:42,712 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:16:42,733 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:16:42,734 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:16:42,766 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:16:42,766 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [841552650] [2019-11-26 02:16:42,789 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2019-11-26 02:16:42,789 INFO L166 IcfgInterpreter]: Building call graph [2019-11-26 02:16:42,794 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-26 02:16:42,800 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-26 02:16:42,800 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-26 02:16:43,371 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-26 02:16:43,542 WARN L192 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 38 [2019-11-26 02:16:44,011 WARN L192 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 47 [2019-11-26 02:16:44,162 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 38 [2019-11-26 02:16:44,334 WARN L192 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 36 [2019-11-26 02:16:44,336 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2019-11-26 02:16:44,336 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4, 4, 4] total 16 [2019-11-26 02:16:44,337 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948971681] [2019-11-26 02:16:44,337 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-26 02:16:44,338 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:16:44,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-26 02:16:44,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2019-11-26 02:16:44,339 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. Second operand 9 states. [2019-11-26 02:16:44,479 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 41 [2019-11-26 02:16:44,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:16:44,528 INFO L93 Difference]: Finished difference Result 12 states and 13 transitions. [2019-11-26 02:16:44,529 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-26 02:16:44,529 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 9 [2019-11-26 02:16:44,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:16:44,529 INFO L225 Difference]: With dead ends: 12 [2019-11-26 02:16:44,529 INFO L226 Difference]: Without dead ends: 0 [2019-11-26 02:16:44,530 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2019-11-26 02:16:44,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-26 02:16:44,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-26 02:16:44,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-26 02:16:44,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-26 02:16:44,531 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2019-11-26 02:16:44,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:16:44,531 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-26 02:16:44,532 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-26 02:16:44,532 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-26 02:16:44,532 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-26 02:16:44,732 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:16:44,737 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-26 02:16:44,895 WARN L192 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 37 [2019-11-26 02:16:44,950 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2019-11-26 02:16:44,950 INFO L444 ceAbstractionStarter]: For program point L23(line 23) no Hoare annotation was computed. [2019-11-26 02:16:44,950 INFO L444 ceAbstractionStarter]: For program point L23-1(line 23) no Hoare annotation was computed. [2019-11-26 02:16:44,950 INFO L447 ceAbstractionStarter]: At program point L19(lines 19 26) the Hoare annotation is: true [2019-11-26 02:16:44,950 INFO L444 ceAbstractionStarter]: For program point L15-3(line 15) no Hoare annotation was computed. [2019-11-26 02:16:44,950 INFO L444 ceAbstractionStarter]: For program point L15-4(line 15) no Hoare annotation was computed. [2019-11-26 02:16:44,951 INFO L440 ceAbstractionStarter]: At program point L15-5(lines 15 17) the Hoare annotation is: (and (<= 0 |#StackHeapBarrier|) (let ((.cse0 (= |ULTIMATE.start_main_~#a~0.offset| 0)) (.cse1 (= 0 |#NULL.base|)) (.cse2 (= |#NULL.offset| 0)) (.cse3 (<= ULTIMATE.start_main_~k~0 2147483647)) (.cse4 (<= 0 (+ ULTIMATE.start_main_~k~0 2147483648)))) (or (and .cse0 (< |#StackHeapBarrier| |ULTIMATE.start_main_~#a~0.base|) .cse1 (< 0 |#StackHeapBarrier|) (= 0 (select |#valid| 0)) (= ULTIMATE.start_main_~i~0 0) .cse2 .cse3 (= 1 (select |#valid| |ULTIMATE.start_main_~#a~0.base|)) .cse4 (= (select |#length| |ULTIMATE.start_main_~#a~0.base|) 4192)) (and (<= 1 ULTIMATE.start_main_~i~0) .cse0 .cse1 .cse2 (<= ULTIMATE.start_main_~i~0 2147483647) .cse3 .cse4))) (<= 0 |ULTIMATE.start_main_~#a~0.base|)) [2019-11-26 02:16:44,951 INFO L444 ceAbstractionStarter]: For program point L15-6(lines 11 28) no Hoare annotation was computed. [2019-11-26 02:16:44,951 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 15) no Hoare annotation was computed. [2019-11-26 02:16:44,951 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-26 02:16:44,951 INFO L444 ceAbstractionStarter]: For program point L20-2(lines 20 25) no Hoare annotation was computed. [2019-11-26 02:16:44,951 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 15) no Hoare annotation was computed. [2019-11-26 02:16:44,951 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-26 02:16:44,952 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2019-11-26 02:16:44,952 INFO L440 ceAbstractionStarter]: At program point L22-2(lines 22 24) the Hoare annotation is: (let ((.cse0 (select |#memory_int| |ULTIMATE.start_main_~#a~0.base|))) (and (<= 0 ULTIMATE.start_main_~k~0) (<= ULTIMATE.start_main_~x~0 2147483647) (= 0 |#NULL.base|) (<= 1048 ULTIMATE.start_main_~i~0) (< ULTIMATE.start_main_~k~0 1048) (= (select .cse0 |ULTIMATE.start_main_~#a~0.offset|) 23) (<= ULTIMATE.start_main_~i~0 2147483647) (= |ULTIMATE.start_main_~#a~0.offset| 0) (<= 0 |#StackHeapBarrier|) (= 42 (select .cse0 (+ |ULTIMATE.start_main_~#a~0.offset| (* ULTIMATE.start_main_~k~0 4)))) (<= 0 (+ ULTIMATE.start_main_~x~0 2147483648)) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#a~0.base|))) [2019-11-26 02:16:44,960 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2019-11-26 02:16:44,961 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2019-11-26 02:16:44,961 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2019-11-26 02:16:44,961 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2019-11-26 02:16:44,962 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2019-11-26 02:16:44,962 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2019-11-26 02:16:44,962 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2019-11-26 02:16:44,963 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2019-11-26 02:16:44,968 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2019-11-26 02:16:44,969 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2019-11-26 02:16:44,969 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2019-11-26 02:16:44,969 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2019-11-26 02:16:44,969 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2019-11-26 02:16:44,970 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2019-11-26 02:16:44,970 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2019-11-26 02:16:44,970 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2019-11-26 02:16:44,972 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2019-11-26 02:16:44,973 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-11-26 02:16:44,973 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2019-11-26 02:16:44,973 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-11-26 02:16:44,973 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2019-11-26 02:16:44,974 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2019-11-26 02:16:44,974 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-11-26 02:16:44,975 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2019-11-26 02:16:44,975 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-11-26 02:16:44,975 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2019-11-26 02:16:44,978 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 02:16:44 BoogieIcfgContainer [2019-11-26 02:16:44,978 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-26 02:16:44,979 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-26 02:16:44,979 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-26 02:16:44,979 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-26 02:16:44,980 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:16:41" (3/4) ... [2019-11-26 02:16:44,983 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-26 02:16:44,991 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2019-11-26 02:16:44,991 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2019-11-26 02:16:44,992 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-11-26 02:16:45,055 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_6844a6ff-e9e7-4eaf-9bd8-74f5cbd184f7/bin/utaipan/witness.graphml [2019-11-26 02:16:45,056 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-26 02:16:45,057 INFO L168 Benchmark]: Toolchain (without parser) took 4289.00 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 191.9 MB). Free memory was 950.1 MB in the beginning and 1.2 GB in the end (delta: -200.3 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:16:45,057 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:16:45,058 INFO L168 Benchmark]: CACSL2BoogieTranslator took 306.03 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 115.9 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -160.1 MB). Peak memory consumption was 23.5 MB. Max. memory is 11.5 GB. [2019-11-26 02:16:45,060 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.40 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: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. [2019-11-26 02:16:45,060 INFO L168 Benchmark]: Boogie Preprocessor took 42.10 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. [2019-11-26 02:16:45,061 INFO L168 Benchmark]: RCFGBuilder took 445.04 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: 30.2 MB). Peak memory consumption was 30.2 MB. Max. memory is 11.5 GB. [2019-11-26 02:16:45,061 INFO L168 Benchmark]: TraceAbstraction took 3371.36 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 76.0 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -76.5 MB). Peak memory consumption was 306.0 MB. Max. memory is 11.5 GB. [2019-11-26 02:16:45,062 INFO L168 Benchmark]: Witness Printer took 76.94 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2019-11-26 02:16:45,065 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 306.03 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 115.9 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -160.1 MB). Peak memory consumption was 23.5 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 36.40 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: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 42.10 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 445.04 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: 30.2 MB). Peak memory consumption was 30.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3371.36 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 76.0 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -76.5 MB). Peak memory consumption was 306.0 MB. Max. memory is 11.5 GB. * Witness Printer took 76.94 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 23]: 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: 23]: 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 4 specifications checked. All of them hold - InvariantResult [Line: 15]: Loop Invariant [2019-11-26 02:16:45,084 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2019-11-26 02:16:45,085 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2019-11-26 02:16:45,085 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2019-11-26 02:16:45,085 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2019-11-26 02:16:45,085 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2019-11-26 02:16:45,086 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2019-11-26 02:16:45,086 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2019-11-26 02:16:45,086 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2019-11-26 02:16:45,093 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2019-11-26 02:16:45,093 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2019-11-26 02:16:45,094 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2019-11-26 02:16:45,094 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2019-11-26 02:16:45,094 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2019-11-26 02:16:45,094 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2019-11-26 02:16:45,094 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2019-11-26 02:16:45,095 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL Derived loop invariant: (0 <= unknown-#StackHeapBarrier-unknown && (((((((((((a == 0 && unknown-#StackHeapBarrier-unknown < a) && 0 == #NULL) && 0 < unknown-#StackHeapBarrier-unknown) && 0 == \valid[0]) && i == 0) && #NULL == 0) && k <= 2147483647) && 1 == \valid[a]) && 0 <= k + 2147483648) && unknown-#length-unknown[a] == 4192) || ((((((1 <= i && a == 0) && 0 == #NULL) && #NULL == 0) && i <= 2147483647) && k <= 2147483647) && 0 <= k + 2147483648))) && 0 <= a - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 22]: Loop Invariant [2019-11-26 02:16:45,096 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2019-11-26 02:16:45,096 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-11-26 02:16:45,096 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2019-11-26 02:16:45,096 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-11-26 02:16:45,097 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2019-11-26 02:16:45,099 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2019-11-26 02:16:45,099 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-11-26 02:16:45,099 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2019-11-26 02:16:45,099 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-11-26 02:16:45,100 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL Derived loop invariant: (((((((((((0 <= k && x <= 2147483647) && 0 == #NULL) && 1048 <= i) && k < 1048) && unknown-#memory_int-unknown[a][a] == 23) && i <= 2147483647) && a == 0) && 0 <= unknown-#StackHeapBarrier-unknown) && 42 == unknown-#memory_int-unknown[a][a + k * 4]) && 0 <= x + 2147483648) && #NULL == 0) && 0 <= a - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 4 error locations. Result: SAFE, OverallTime: 3.2s, OverallIterations: 4, TraceHistogramMax: 2, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, HoareTripleCheckerStatistics: 34 SDtfs, 42 SDslu, 55 SDs, 0 SdLazy, 71 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 53 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=1, 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, 4 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 6 NumberOfFragments, 129 HoareAnnotationTreeSize, 3 FomulaSimplifications, 3 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 84 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 41 NumberOfCodeBlocks, 41 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 49 ConstructedInterpolants, 0 QuantifiedInterpolants, 827 SizeOfPredicates, 4 NumberOfNonLiveVariables, 80 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 8 InterpolantComputations, 4 PerfectInterpolantSequences, 8/14 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: OVERALL_TIME[ms]: 583, ICFG_INTERPRETER_ENTERED_PROCEDURES: 1, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 9, DAG_INTERPRETER_EARLY_EXITS: 0, TOOLS_POST_APPLICATIONS: 18, TOOLS_POST_TIME[ms]: 298, 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: 18, TOOLS_QUANTIFIERELIM_TIME[ms]: 290, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 119, FLUID_QUERY_TIME[ms]: 3, FLUID_QUERIES: 35, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 2, DOMAIN_JOIN_TIME[ms]: 52, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME[ms]: 0, DOMAIN_WIDEN_APPLICATIONS: 2, DOMAIN_WIDEN_TIME[ms]: 157, DOMAIN_ISSUBSETEQ_APPLICATIONS: 3, DOMAIN_ISSUBSETEQ_TIME[ms]: 10, DOMAIN_ISBOTTOM_APPLICATIONS: 9, DOMAIN_ISBOTTOM_TIME[ms]: 19, LOOP_SUMMARIZER_APPLICATIONS: 1, LOOP_SUMMARIZER_CACHE_MISSES: 1, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 363, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 362, 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]: 2, PATH_EXPR_TIME[ms]: 3, REGEX_TO_DAG_TIME[ms]: 3, DAG_COMPRESSION_TIME[ms]: 9, DAG_COMPRESSION_PROCESSED_NODES: 88, DAG_COMPRESSION_RETAINED_NODES: 27, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...