./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/loop-zilu/benchmark19_conjunctive.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5c92599-14c9-4ac7-9b11-75928b1cb8e4/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5c92599-14c9-4ac7-9b11-75928b1cb8e4/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5c92599-14c9-4ac7-9b11-75928b1cb8e4/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5c92599-14c9-4ac7-9b11-75928b1cb8e4/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-zilu/benchmark19_conjunctive.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5c92599-14c9-4ac7-9b11-75928b1cb8e4/bin/utaipan-WLngWcDbfI/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5c92599-14c9-4ac7-9b11-75928b1cb8e4/bin/utaipan-WLngWcDbfI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b3778a0dc06b06dbf04163d9b170743f1501fb85 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:28:03,806 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:28:03,809 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:28:03,861 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:28:03,861 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:28:03,867 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:28:03,869 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:28:03,874 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:28:03,877 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:28:03,885 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:28:03,886 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:28:03,888 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:28:03,888 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:28:03,892 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:28:03,893 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:28:03,895 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:28:03,897 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:28:03,900 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:28:03,903 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:28:03,911 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:28:03,914 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:28:03,915 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:28:03,919 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:28:03,921 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:28:03,929 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:28:03,930 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:28:03,930 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:28:03,933 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:28:03,934 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:28:03,935 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:28:03,936 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:28:03,937 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:28:03,939 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:28:03,940 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:28:03,941 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:28:03,942 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:28:03,942 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:28:03,943 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:28:03,943 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:28:03,944 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:28:03,945 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:28:03,947 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5c92599-14c9-4ac7-9b11-75928b1cb8e4/bin/utaipan-WLngWcDbfI/config/svcomp-Overflow-32bit-Taipan_Default.epf [2021-10-11 02:28:03,987 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:28:03,988 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:28:03,989 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:28:03,990 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:28:03,990 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:28:03,990 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:28:03,991 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:28:03,991 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:28:03,991 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:28:03,991 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:28:03,998 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:28:03,999 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:28:03,999 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:28:03,999 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:28:04,000 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:28:04,000 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:28:04,001 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:28:04,001 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-11 02:28:04,001 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:28:04,001 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:28:04,002 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:28:04,002 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:28:04,002 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:28:04,002 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:28:04,003 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-11 02:28:04,003 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:28:04,003 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:28:04,003 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:28:04,004 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:28:04,004 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:28:04,004 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:28:04,004 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:28:04,005 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:28:04,005 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:28:04,005 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:28:04,006 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:28:04,006 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:28:04,006 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:28:04,006 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:28:04,007 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:28:04,007 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5c92599-14c9-4ac7-9b11-75928b1cb8e4/bin/utaipan-WLngWcDbfI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5c92599-14c9-4ac7-9b11-75928b1cb8e4/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b3778a0dc06b06dbf04163d9b170743f1501fb85 [2021-10-11 02:28:04,297 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:28:04,332 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:28:04,337 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:28:04,338 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:28:04,339 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:28:04,340 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5c92599-14c9-4ac7-9b11-75928b1cb8e4/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/loop-zilu/benchmark19_conjunctive.i [2021-10-11 02:28:04,429 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5c92599-14c9-4ac7-9b11-75928b1cb8e4/bin/utaipan-WLngWcDbfI/data/8a95ba714/9912a54ef6a64797821560216f4f9d6d/FLAGf40dad637 [2021-10-11 02:28:04,835 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:28:04,835 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5c92599-14c9-4ac7-9b11-75928b1cb8e4/sv-benchmarks/c/loop-zilu/benchmark19_conjunctive.i [2021-10-11 02:28:04,840 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5c92599-14c9-4ac7-9b11-75928b1cb8e4/bin/utaipan-WLngWcDbfI/data/8a95ba714/9912a54ef6a64797821560216f4f9d6d/FLAGf40dad637 [2021-10-11 02:28:05,252 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5c92599-14c9-4ac7-9b11-75928b1cb8e4/bin/utaipan-WLngWcDbfI/data/8a95ba714/9912a54ef6a64797821560216f4f9d6d [2021-10-11 02:28:05,254 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:28:05,256 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:28:05,259 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:28:05,260 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:28:05,263 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:28:05,264 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:28:05" (1/1) ... [2021-10-11 02:28:05,266 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bc58438 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:05, skipping insertion in model container [2021-10-11 02:28:05,266 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:28:05" (1/1) ... [2021-10-11 02:28:05,273 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:28:05,290 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:28:05,440 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5c92599-14c9-4ac7-9b11-75928b1cb8e4/sv-benchmarks/c/loop-zilu/benchmark19_conjunctive.i[873,886] [2021-10-11 02:28:05,452 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:28:05,460 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:28:05,472 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5c92599-14c9-4ac7-9b11-75928b1cb8e4/sv-benchmarks/c/loop-zilu/benchmark19_conjunctive.i[873,886] [2021-10-11 02:28:05,475 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:28:05,488 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:28:05,489 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:05 WrapperNode [2021-10-11 02:28:05,489 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:28:05,490 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:28:05,491 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:28:05,491 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:28:05,498 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:05" (1/1) ... [2021-10-11 02:28:05,504 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:05" (1/1) ... [2021-10-11 02:28:05,521 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:28:05,522 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:28:05,523 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:28:05,523 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:28:05,531 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:05" (1/1) ... [2021-10-11 02:28:05,531 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:05" (1/1) ... [2021-10-11 02:28:05,532 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:05" (1/1) ... [2021-10-11 02:28:05,533 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:05" (1/1) ... [2021-10-11 02:28:05,536 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:05" (1/1) ... [2021-10-11 02:28:05,539 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:05" (1/1) ... [2021-10-11 02:28:05,540 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:05" (1/1) ... [2021-10-11 02:28:05,542 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:28:05,543 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:28:05,543 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:28:05,543 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:28:05,544 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:05" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5c92599-14c9-4ac7-9b11-75928b1cb8e4/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:28:05,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:28:05,625 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:28:05,625 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:28:05,625 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:28:05,851 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:28:05,852 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-11 02:28:05,853 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:28:05 BoogieIcfgContainer [2021-10-11 02:28:05,854 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:28:05,855 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:28:05,855 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:28:05,858 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:28:05,859 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:28:05" (1/3) ... [2021-10-11 02:28:05,860 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39cf1f43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:28:05, skipping insertion in model container [2021-10-11 02:28:05,860 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:05" (2/3) ... [2021-10-11 02:28:05,860 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39cf1f43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:28:05, skipping insertion in model container [2021-10-11 02:28:05,860 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:28:05" (3/3) ... [2021-10-11 02:28:05,862 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark19_conjunctive.i [2021-10-11 02:28:05,875 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:28:05,878 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2021-10-11 02:28:05,888 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-11 02:28:05,910 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:28:05,910 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:28:05,910 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:28:05,910 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:28:05,910 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:28:05,911 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:28:05,911 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:28:05,911 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:28:05,924 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2021-10-11 02:28:05,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-11 02:28:05,929 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:05,929 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-11 02:28:05,930 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 02:28:05,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:05,935 INFO L82 PathProgramCache]: Analyzing trace with hash 2092610, now seen corresponding path program 1 times [2021-10-11 02:28:05,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:28:05,944 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545765342] [2021-10-11 02:28:05,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:28:06,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:06,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:28:06,097 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545765342] [2021-10-11 02:28:06,098 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:28:06,098 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:28:06,099 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679097745] [2021-10-11 02:28:06,102 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:28:06,103 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:28:06,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:28:06,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:28:06,118 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 4 states. [2021-10-11 02:28:06,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:06,207 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2021-10-11 02:28:06,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:28:06,209 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2021-10-11 02:28:06,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:06,229 INFO L225 Difference]: With dead ends: 13 [2021-10-11 02:28:06,230 INFO L226 Difference]: Without dead ends: 10 [2021-10-11 02:28:06,232 INFO L677 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 [2021-10-11 02:28:06,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2021-10-11 02:28:06,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2021-10-11 02:28:06,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-10-11 02:28:06,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2021-10-11 02:28:06,265 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 4 [2021-10-11 02:28:06,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:06,266 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2021-10-11 02:28:06,266 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:28:06,266 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2021-10-11 02:28:06,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-11 02:28:06,267 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:06,267 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-11 02:28:06,269 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:28:06,270 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 02:28:06,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:06,280 INFO L82 PathProgramCache]: Analyzing trace with hash 64870960, now seen corresponding path program 1 times [2021-10-11 02:28:06,280 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:28:06,281 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175237220] [2021-10-11 02:28:06,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:28:06,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:06,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:28:06,347 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175237220] [2021-10-11 02:28:06,347 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:28:06,348 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:28:06,348 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573257841] [2021-10-11 02:28:06,349 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:28:06,349 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:28:06,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:28:06,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:28:06,351 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 3 states. [2021-10-11 02:28:06,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:06,371 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2021-10-11 02:28:06,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:28:06,371 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2021-10-11 02:28:06,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:06,372 INFO L225 Difference]: With dead ends: 10 [2021-10-11 02:28:06,372 INFO L226 Difference]: Without dead ends: 9 [2021-10-11 02:28:06,373 INFO L677 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 [2021-10-11 02:28:06,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-10-11 02:28:06,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-10-11 02:28:06,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-10-11 02:28:06,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2021-10-11 02:28:06,376 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2021-10-11 02:28:06,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:06,376 INFO L481 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2021-10-11 02:28:06,376 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:28:06,376 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2021-10-11 02:28:06,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-11 02:28:06,377 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:06,377 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-11 02:28:06,377 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:28:06,377 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 02:28:06,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:06,378 INFO L82 PathProgramCache]: Analyzing trace with hash 2010999812, now seen corresponding path program 1 times [2021-10-11 02:28:06,378 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:28:06,379 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887860758] [2021-10-11 02:28:06,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:28:06,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:06,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:28:06,466 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887860758] [2021-10-11 02:28:06,466 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:28:06,466 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:28:06,467 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806283073] [2021-10-11 02:28:06,467 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:28:06,467 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:28:06,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:28:06,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:28:06,472 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 4 states. [2021-10-11 02:28:06,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:06,503 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2021-10-11 02:28:06,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:28:06,504 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2021-10-11 02:28:06,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:06,505 INFO L225 Difference]: With dead ends: 9 [2021-10-11 02:28:06,505 INFO L226 Difference]: Without dead ends: 8 [2021-10-11 02:28:06,505 INFO L677 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 [2021-10-11 02:28:06,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2021-10-11 02:28:06,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2021-10-11 02:28:06,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-10-11 02:28:06,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2021-10-11 02:28:06,508 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2021-10-11 02:28:06,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:06,508 INFO L481 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2021-10-11 02:28:06,508 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:28:06,508 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2021-10-11 02:28:06,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-11 02:28:06,509 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:06,509 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:28:06,509 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 02:28:06,510 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 02:28:06,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:06,511 INFO L82 PathProgramCache]: Analyzing trace with hash -2083515214, now seen corresponding path program 1 times [2021-10-11 02:28:06,511 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:28:06,511 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040986078] [2021-10-11 02:28:06,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:28:06,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:06,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:28:06,604 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040986078] [2021-10-11 02:28:06,605 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:28:06,605 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:28:06,605 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842082536] [2021-10-11 02:28:06,606 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:28:06,607 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:28:06,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:28:06,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:28:06,609 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 4 states. [2021-10-11 02:28:06,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:06,651 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2021-10-11 02:28:06,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:28:06,652 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2021-10-11 02:28:06,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:06,652 INFO L225 Difference]: With dead ends: 14 [2021-10-11 02:28:06,653 INFO L226 Difference]: Without dead ends: 13 [2021-10-11 02:28:06,654 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:28:06,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-10-11 02:28:06,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-10-11 02:28:06,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-10-11 02:28:06,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2021-10-11 02:28:06,661 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 7 [2021-10-11 02:28:06,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:06,661 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2021-10-11 02:28:06,661 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:28:06,661 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2021-10-11 02:28:06,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-11 02:28:06,662 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:06,663 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1] [2021-10-11 02:28:06,664 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-11 02:28:06,664 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 02:28:06,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:06,666 INFO L82 PathProgramCache]: Analyzing trace with hash -1317414976, now seen corresponding path program 1 times [2021-10-11 02:28:06,666 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:28:06,669 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536620808] [2021-10-11 02:28:06,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:28:06,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:06,747 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:28:06,747 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536620808] [2021-10-11 02:28:06,748 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1406151483] [2021-10-11 02:28:06,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5c92599-14c9-4ac7-9b11-75928b1cb8e4/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:28:06,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:06,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-11 02:28:06,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:28:06,954 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-11 02:28:06,954 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:28:07,131 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:28:07,132 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [467878623] [2021-10-11 02:28:07,160 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-10-11 02:28:07,161 INFO L166 IcfgInterpreter]: Building call graph [2021-10-11 02:28:07,167 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-11 02:28:07,174 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-11 02:28:07,174 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-11 02:28:07,780 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-11 02:28:08,005 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 53 [2021-10-11 02:28:08,304 WARN L197 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 62 [2021-10-11 02:28:08,601 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:28:08,601 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-11 02:28:08,601 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 7] total 14 [2021-10-11 02:28:08,601 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350559727] [2021-10-11 02:28:08,602 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-10-11 02:28:08,602 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:28:08,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-11 02:28:08,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=323, Unknown=0, NotChecked=0, Total=380 [2021-10-11 02:28:08,604 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 15 states. [2021-10-11 02:28:08,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:08,718 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2021-10-11 02:28:08,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 02:28:08,719 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 12 [2021-10-11 02:28:08,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:08,719 INFO L225 Difference]: With dead ends: 13 [2021-10-11 02:28:08,719 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:28:08,720 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 16 SyntacticMatches, 5 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=103, Invalid=449, Unknown=0, NotChecked=0, Total=552 [2021-10-11 02:28:08,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:28:08,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:28:08,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:28:08,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:28:08,721 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2021-10-11 02:28:08,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:08,722 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:28:08,722 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2021-10-11 02:28:08,722 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:28:08,722 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:28:08,928 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:28:08,930 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-11 02:28:08,962 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2021-10-11 02:28:08,962 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-11 02:28:08,962 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2021-10-11 02:28:08,962 INFO L262 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2021-10-11 02:28:08,963 INFO L262 CegarLoopResult]: For program point L25-1(line 25) no Hoare annotation was computed. [2021-10-11 02:28:08,963 INFO L262 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed. [2021-10-11 02:28:08,963 INFO L262 CegarLoopResult]: For program point L25-2(line 25) no Hoare annotation was computed. [2021-10-11 02:28:08,963 INFO L262 CegarLoopResult]: For program point L25-3(line 25) no Hoare annotation was computed. [2021-10-11 02:28:08,963 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2021-10-11 02:28:08,964 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2021-10-11 02:28:08,964 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-11 02:28:08,964 INFO L258 CegarLoopResult]: At program point L28(lines 19 29) the Hoare annotation is: (<= ULTIMATE.start_main_~j~0 2147483647) [2021-10-11 02:28:08,965 INFO L258 CegarLoopResult]: At program point L24-2(lines 24 26) the Hoare annotation is: (and (<= ULTIMATE.start_main_~j~0 ULTIMATE.start_main_~k~0) (<= ULTIMATE.start_main_~k~0 2147483647) (<= 0 ULTIMATE.start_main_~k~0)) [2021-10-11 02:28:08,989 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:28:08 BoogieIcfgContainer [2021-10-11 02:28:08,989 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:28:08,990 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:28:08,990 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:28:08,990 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:28:08,990 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:28:05" (3/4) ... [2021-10-11 02:28:08,994 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:28:09,005 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2021-10-11 02:28:09,005 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-10-11 02:28:09,005 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:28:09,005 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:28:09,053 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5c92599-14c9-4ac7-9b11-75928b1cb8e4/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:28:09,057 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:28:09,058 INFO L168 Benchmark]: Toolchain (without parser) took 3801.29 ms. Allocated memory was 96.5 MB in the beginning and 123.7 MB in the end (delta: 27.3 MB). Free memory was 61.2 MB in the beginning and 52.2 MB in the end (delta: 9.0 MB). Peak memory consumption was 35.8 MB. Max. memory is 16.1 GB. [2021-10-11 02:28:09,061 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 96.5 MB. Free memory was 67.3 MB in the beginning and 67.2 MB in the end (delta: 27.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:28:09,062 INFO L168 Benchmark]: CACSL2BoogieTranslator took 230.81 ms. Allocated memory is still 96.5 MB. Free memory was 61.0 MB in the beginning and 71.1 MB in the end (delta: -10.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:28:09,063 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.25 ms. Allocated memory is still 96.5 MB. Free memory was 71.1 MB in the beginning and 69.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:28:09,063 INFO L168 Benchmark]: Boogie Preprocessor took 19.70 ms. Allocated memory is still 96.5 MB. Free memory was 69.7 MB in the beginning and 68.8 MB in the end (delta: 910.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:28:09,065 INFO L168 Benchmark]: RCFGBuilder took 311.08 ms. Allocated memory is still 96.5 MB. Free memory was 68.8 MB in the beginning and 53.0 MB in the end (delta: 15.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-11 02:28:09,066 INFO L168 Benchmark]: TraceAbstraction took 3133.88 ms. Allocated memory was 96.5 MB in the beginning and 123.7 MB in the end (delta: 27.3 MB). Free memory was 52.6 MB in the beginning and 55.3 MB in the end (delta: -2.8 MB). Peak memory consumption was 26.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:28:09,066 INFO L168 Benchmark]: Witness Printer took 67.18 ms. Allocated memory is still 123.7 MB. Free memory was 55.3 MB in the beginning and 52.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:28:09,068 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 96.5 MB. Free memory was 67.3 MB in the beginning and 67.2 MB in the end (delta: 27.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 230.81 ms. Allocated memory is still 96.5 MB. Free memory was 61.0 MB in the beginning and 71.1 MB in the end (delta: -10.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 31.25 ms. Allocated memory is still 96.5 MB. Free memory was 71.1 MB in the beginning and 69.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 19.70 ms. Allocated memory is still 96.5 MB. Free memory was 69.7 MB in the beginning and 68.8 MB in the end (delta: 910.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 311.08 ms. Allocated memory is still 96.5 MB. Free memory was 68.8 MB in the beginning and 53.0 MB in the end (delta: 15.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3133.88 ms. Allocated memory was 96.5 MB in the beginning and 123.7 MB in the end (delta: 27.3 MB). Free memory was 52.6 MB in the beginning and 55.3 MB in the end (delta: -2.8 MB). Peak memory consumption was 26.1 MB. Max. memory is 16.1 GB. * Witness Printer took 67.18 ms. Allocated memory is still 123.7 MB. Free memory was 55.3 MB in the beginning and 52.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: 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: 24]: Loop Invariant Derived loop invariant: (j <= k && k <= 2147483647) && 0 <= k - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: j <= 2147483647 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.0s, OverallIterations: 5, TraceHistogramMax: 2, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 23 SDtfs, 28 SDslu, 20 SDs, 0 SdLazy, 57 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 55 GetRequests, 18 SyntacticMatches, 5 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=0, 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, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 3 NumberOfFragments, 13 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 17 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 46 NumberOfCodeBlocks, 46 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 51 ConstructedInterpolants, 0 QuantifiedInterpolants, 1781 SizeOfPredicates, 8 NumberOfNonLiveVariables, 62 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 7 InterpolantComputations, 4 PerfectInterpolantSequences, 1/15 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...