./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/loop-zilu/benchmark34_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_c720907e-2c64-472f-b799-de2d9fc45eb0/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c720907e-2c64-472f-b799-de2d9fc45eb0/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_c720907e-2c64-472f-b799-de2d9fc45eb0/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c720907e-2c64-472f-b799-de2d9fc45eb0/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-zilu/benchmark34_conjunctive.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c720907e-2c64-472f-b799-de2d9fc45eb0/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_c720907e-2c64-472f-b799-de2d9fc45eb0/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 58313a706dc1d8f505ffe0e88ce66e9b5e9ea53a ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 02:28:51,439 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:28:51,441 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:28:51,510 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:28:51,511 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:28:51,518 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:28:51,520 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:28:51,522 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:28:51,524 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:28:51,525 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:28:51,527 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:28:51,528 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:28:51,529 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:28:51,530 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:28:51,531 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:28:51,533 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:28:51,534 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:28:51,535 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:28:51,537 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:28:51,539 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:28:51,541 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:28:51,546 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:28:51,547 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:28:51,552 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:28:51,556 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:28:51,560 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:28:51,561 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:28:51,562 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:28:51,564 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:28:51,565 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:28:51,566 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:28:51,567 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:28:51,568 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:28:51,570 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:28:51,572 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:28:51,572 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:28:51,573 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:28:51,573 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:28:51,574 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:28:51,575 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:28:51,575 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:28:51,578 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c720907e-2c64-472f-b799-de2d9fc45eb0/bin/utaipan-WLngWcDbfI/config/svcomp-Overflow-32bit-Taipan_Default.epf [2021-10-11 02:28:51,620 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:28:51,620 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:28:51,622 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:28:51,622 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:28:51,622 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:28:51,623 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:28:51,623 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:28:51,623 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:28:51,629 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:28:51,630 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:28:51,631 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:28:51,631 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:28:51,631 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:28:51,632 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:28:51,632 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:28:51,633 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:28:51,633 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:28:51,633 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-11 02:28:51,633 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:28:51,633 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:28:51,634 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:28:51,634 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:28:51,634 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:28:51,634 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:28:51,635 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-11 02:28:51,635 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:28:51,635 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:28:51,635 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:28:51,636 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:28:51,638 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:28:51,638 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:28:51,638 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:28:51,639 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:28:51,639 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:28:51,639 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:28:51,639 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:28:51,640 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:28:51,640 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:28:51,640 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:28:51,640 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:28:51,640 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_c720907e-2c64-472f-b799-de2d9fc45eb0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c720907e-2c64-472f-b799-de2d9fc45eb0/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 58313a706dc1d8f505ffe0e88ce66e9b5e9ea53a [2021-10-11 02:28:51,878 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:28:51,906 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:28:51,909 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:28:51,910 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:28:51,911 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:28:51,912 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c720907e-2c64-472f-b799-de2d9fc45eb0/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/loop-zilu/benchmark34_conjunctive.i [2021-10-11 02:28:51,993 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c720907e-2c64-472f-b799-de2d9fc45eb0/bin/utaipan-WLngWcDbfI/data/ff7d6218a/931c76693f134c4b9ce3e3fe1e0d944f/FLAGe18cd927f [2021-10-11 02:28:52,475 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:28:52,476 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c720907e-2c64-472f-b799-de2d9fc45eb0/sv-benchmarks/c/loop-zilu/benchmark34_conjunctive.i [2021-10-11 02:28:52,482 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c720907e-2c64-472f-b799-de2d9fc45eb0/bin/utaipan-WLngWcDbfI/data/ff7d6218a/931c76693f134c4b9ce3e3fe1e0d944f/FLAGe18cd927f [2021-10-11 02:28:52,837 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c720907e-2c64-472f-b799-de2d9fc45eb0/bin/utaipan-WLngWcDbfI/data/ff7d6218a/931c76693f134c4b9ce3e3fe1e0d944f [2021-10-11 02:28:52,839 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:28:52,841 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:28:52,843 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:28:52,844 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:28:52,847 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:28:52,848 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:28:52" (1/1) ... [2021-10-11 02:28:52,852 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c7a3f0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:52, skipping insertion in model container [2021-10-11 02:28:52,852 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:28:52" (1/1) ... [2021-10-11 02:28:52,859 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:28:52,872 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:28:53,046 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_c720907e-2c64-472f-b799-de2d9fc45eb0/sv-benchmarks/c/loop-zilu/benchmark34_conjunctive.i[873,886] [2021-10-11 02:28:53,054 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:28:53,062 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:28:53,074 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_c720907e-2c64-472f-b799-de2d9fc45eb0/sv-benchmarks/c/loop-zilu/benchmark34_conjunctive.i[873,886] [2021-10-11 02:28:53,077 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:28:53,091 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:28:53,091 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:53 WrapperNode [2021-10-11 02:28:53,091 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:28:53,092 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:28:53,093 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:28:53,093 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:28:53,099 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:53" (1/1) ... [2021-10-11 02:28:53,105 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:53" (1/1) ... [2021-10-11 02:28:53,123 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:28:53,123 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:28:53,123 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:28:53,124 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:28:53,133 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:53" (1/1) ... [2021-10-11 02:28:53,133 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:53" (1/1) ... [2021-10-11 02:28:53,134 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:53" (1/1) ... [2021-10-11 02:28:53,135 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:53" (1/1) ... [2021-10-11 02:28:53,138 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:53" (1/1) ... [2021-10-11 02:28:53,141 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:53" (1/1) ... [2021-10-11 02:28:53,142 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:53" (1/1) ... [2021-10-11 02:28:53,144 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:28:53,144 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:28:53,145 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:28:53,145 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:28:53,146 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:53" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c720907e-2c64-472f-b799-de2d9fc45eb0/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 02:28:53,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:28:53,225 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:28:53,225 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:28:53,225 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:28:53,468 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:28:53,468 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-11 02:28:53,470 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:28:53 BoogieIcfgContainer [2021-10-11 02:28:53,472 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:28:53,473 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:28:53,475 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:28:53,478 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:28:53,478 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:28:52" (1/3) ... [2021-10-11 02:28:53,480 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@159f54e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:28:53, skipping insertion in model container [2021-10-11 02:28:53,480 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:53" (2/3) ... [2021-10-11 02:28:53,481 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@159f54e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:28:53, skipping insertion in model container [2021-10-11 02:28:53,481 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:28:53" (3/3) ... [2021-10-11 02:28:53,482 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark34_conjunctive.i [2021-10-11 02:28:53,501 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:28:53,505 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2021-10-11 02:28:53,517 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-11 02:28:53,541 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:28:53,541 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:28:53,541 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:28:53,542 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:28:53,542 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:28:53,542 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:28:53,542 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:28:53,542 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:28:53,556 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2021-10-11 02:28:53,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-11 02:28:53,560 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:53,561 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-11 02:28:53,562 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 02:28:53,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:53,568 INFO L82 PathProgramCache]: Analyzing trace with hash 2092610, now seen corresponding path program 1 times [2021-10-11 02:28:53,577 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:28:53,577 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576262362] [2021-10-11 02:28:53,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:28:53,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:53,788 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 02:28:53,789 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576262362] [2021-10-11 02:28:53,790 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:28:53,808 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:28:53,809 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188217926] [2021-10-11 02:28:53,814 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:28:53,814 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:28:53,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:28:53,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:28:53,845 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 4 states. [2021-10-11 02:28:53,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:53,899 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2021-10-11 02:28:53,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:28:53,901 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2021-10-11 02:28:53,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:53,909 INFO L225 Difference]: With dead ends: 20 [2021-10-11 02:28:53,909 INFO L226 Difference]: Without dead ends: 15 [2021-10-11 02:28:53,911 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 02:28:53,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-10-11 02:28:53,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 13. [2021-10-11 02:28:53,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-10-11 02:28:53,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2021-10-11 02:28:53,943 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 4 [2021-10-11 02:28:53,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:53,943 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2021-10-11 02:28:53,943 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:28:53,943 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2021-10-11 02:28:53,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-11 02:28:53,944 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:53,944 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-11 02:28:53,944 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:28:53,945 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 02:28:53,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:53,946 INFO L82 PathProgramCache]: Analyzing trace with hash 64870960, now seen corresponding path program 1 times [2021-10-11 02:28:53,946 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:28:53,946 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829843309] [2021-10-11 02:28:53,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:28:53,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:53,982 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 02:28:53,983 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829843309] [2021-10-11 02:28:53,983 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:28:53,983 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:28:53,984 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295939976] [2021-10-11 02:28:53,985 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:28:53,985 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:28:53,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:28:53,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:28:53,987 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 4 states. [2021-10-11 02:28:54,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:54,033 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2021-10-11 02:28:54,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:28:54,033 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2021-10-11 02:28:54,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:54,034 INFO L225 Difference]: With dead ends: 13 [2021-10-11 02:28:54,034 INFO L226 Difference]: Without dead ends: 12 [2021-10-11 02:28:54,041 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 02:28:54,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-10-11 02:28:54,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-10-11 02:28:54,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-10-11 02:28:54,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2021-10-11 02:28:54,045 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 5 [2021-10-11 02:28:54,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:54,046 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2021-10-11 02:28:54,046 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:28:54,046 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2021-10-11 02:28:54,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-11 02:28:54,049 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:54,049 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-11 02:28:54,050 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:28:54,050 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 02:28:54,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:54,051 INFO L82 PathProgramCache]: Analyzing trace with hash 2010999812, now seen corresponding path program 1 times [2021-10-11 02:28:54,051 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:28:54,064 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91218316] [2021-10-11 02:28:54,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:28:54,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:54,126 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 02:28:54,127 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91218316] [2021-10-11 02:28:54,128 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:28:54,129 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:28:54,129 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656388689] [2021-10-11 02:28:54,131 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:28:54,131 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:28:54,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:28:54,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:28:54,143 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 4 states. [2021-10-11 02:28:54,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:54,183 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2021-10-11 02:28:54,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:28:54,184 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2021-10-11 02:28:54,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:54,185 INFO L225 Difference]: With dead ends: 12 [2021-10-11 02:28:54,185 INFO L226 Difference]: Without dead ends: 11 [2021-10-11 02:28:54,186 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 02:28:54,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-10-11 02:28:54,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-10-11 02:28:54,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-10-11 02:28:54,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2021-10-11 02:28:54,191 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 6 [2021-10-11 02:28:54,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:54,192 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2021-10-11 02:28:54,192 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:28:54,193 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2021-10-11 02:28:54,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-11 02:28:54,193 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:54,193 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:28:54,194 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 02:28:54,195 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 02:28:54,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:54,195 INFO L82 PathProgramCache]: Analyzing trace with hash -2083515214, now seen corresponding path program 1 times [2021-10-11 02:28:54,196 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:28:54,196 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966172480] [2021-10-11 02:28:54,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:28:54,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:54,269 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 02:28:54,270 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966172480] [2021-10-11 02:28:54,270 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:28:54,270 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:28:54,271 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062217194] [2021-10-11 02:28:54,271 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:28:54,271 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:28:54,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:28:54,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:28:54,272 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 4 states. [2021-10-11 02:28:54,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:54,296 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2021-10-11 02:28:54,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:28:54,297 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2021-10-11 02:28:54,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:54,297 INFO L225 Difference]: With dead ends: 15 [2021-10-11 02:28:54,297 INFO L226 Difference]: Without dead ends: 14 [2021-10-11 02:28:54,298 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 02:28:54,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-10-11 02:28:54,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-10-11 02:28:54,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-10-11 02:28:54,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2021-10-11 02:28:54,302 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 7 [2021-10-11 02:28:54,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:54,302 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2021-10-11 02:28:54,302 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:28:54,302 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2021-10-11 02:28:54,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-11 02:28:54,303 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:54,303 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:28:54,303 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-11 02:28:54,304 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 02:28:54,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:54,304 INFO L82 PathProgramCache]: Analyzing trace with hash -803359244, now seen corresponding path program 1 times [2021-10-11 02:28:54,304 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:28:54,305 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027127040] [2021-10-11 02:28:54,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:28:54,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:54,382 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:28:54,383 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027127040] [2021-10-11 02:28:54,383 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1551374055] [2021-10-11 02:28:54,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c720907e-2c64-472f-b799-de2d9fc45eb0/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 02:28:54,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:54,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-11 02:28:54,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:28:54,532 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:28:54,532 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:28:54,620 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:28:54,620 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2118304189] [2021-10-11 02:28:54,642 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-10-11 02:28:54,642 INFO L166 IcfgInterpreter]: Building call graph [2021-10-11 02:28:54,649 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-11 02:28:54,655 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-11 02:28:54,656 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-11 02:28:55,365 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-11 02:28:55,577 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 53 [2021-10-11 02:28:55,918 WARN L197 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 70 [2021-10-11 02:28:56,160 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:28:56,160 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-11 02:28:56,161 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2021-10-11 02:28:56,161 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839961638] [2021-10-11 02:28:56,161 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-10-11 02:28:56,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:28:56,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-11 02:28:56,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2021-10-11 02:28:56,163 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 10 states. [2021-10-11 02:28:56,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:56,253 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2021-10-11 02:28:56,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-11 02:28:56,254 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 9 [2021-10-11 02:28:56,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:56,254 INFO L225 Difference]: With dead ends: 30 [2021-10-11 02:28:56,254 INFO L226 Difference]: Without dead ends: 29 [2021-10-11 02:28:56,255 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380 [2021-10-11 02:28:56,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-10-11 02:28:56,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 26. [2021-10-11 02:28:56,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2021-10-11 02:28:56,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2021-10-11 02:28:56,259 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 9 [2021-10-11 02:28:56,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:56,260 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2021-10-11 02:28:56,260 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-10-11 02:28:56,260 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2021-10-11 02:28:56,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-11 02:28:56,260 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:56,260 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1] [2021-10-11 02:28:56,461 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:28:56,461 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 02:28:56,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:56,462 INFO L82 PathProgramCache]: Analyzing trace with hash -1317414976, now seen corresponding path program 1 times [2021-10-11 02:28:56,462 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:28:56,462 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223852357] [2021-10-11 02:28:56,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:28:56,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:56,502 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 02:28:56,502 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223852357] [2021-10-11 02:28:56,502 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [675942371] [2021-10-11 02:28:56,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c720907e-2c64-472f-b799-de2d9fc45eb0/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:28:56,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:56,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-11 02:28:56,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:28:56,609 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 02:28:56,610 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:28:56,753 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 02:28:56,753 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [174146089] [2021-10-11 02:28:56,755 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-10-11 02:28:56,756 INFO L166 IcfgInterpreter]: Building call graph [2021-10-11 02:28:56,756 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-11 02:28:56,756 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-11 02:28:56,756 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-11 02:28:57,076 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-11 02:28:57,283 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 53 [2021-10-11 02:28:57,610 WARN L197 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 70 [2021-10-11 02:28:57,911 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:28:57,912 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-11 02:28:57,912 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 15 [2021-10-11 02:28:57,912 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795604025] [2021-10-11 02:28:57,913 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-10-11 02:28:57,913 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:28:57,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-11 02:28:57,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=398, Unknown=0, NotChecked=0, Total=462 [2021-10-11 02:28:57,914 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand 16 states. [2021-10-11 02:28:58,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:58,212 INFO L93 Difference]: Finished difference Result 36 states and 39 transitions. [2021-10-11 02:28:58,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-11 02:28:58,213 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 12 [2021-10-11 02:28:58,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:58,214 INFO L225 Difference]: With dead ends: 36 [2021-10-11 02:28:58,214 INFO L226 Difference]: Without dead ends: 35 [2021-10-11 02:28:58,214 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 16 SyntacticMatches, 3 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=179, Invalid=813, Unknown=0, NotChecked=0, Total=992 [2021-10-11 02:28:58,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-10-11 02:28:58,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2021-10-11 02:28:58,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2021-10-11 02:28:58,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 35 transitions. [2021-10-11 02:28:58,219 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 35 transitions. Word has length 12 [2021-10-11 02:28:58,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:58,219 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 35 transitions. [2021-10-11 02:28:58,219 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2021-10-11 02:28:58,220 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 35 transitions. [2021-10-11 02:28:58,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-11 02:28:58,220 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:58,220 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 1, 1, 1] [2021-10-11 02:28:58,436 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:28:58,437 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 02:28:58,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:58,437 INFO L82 PathProgramCache]: Analyzing trace with hash 291495106, now seen corresponding path program 2 times [2021-10-11 02:28:58,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:28:58,437 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233471028] [2021-10-11 02:28:58,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:28:58,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:58,525 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:28:58,526 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233471028] [2021-10-11 02:28:58,526 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1638237906] [2021-10-11 02:28:58,526 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c720907e-2c64-472f-b799-de2d9fc45eb0/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:28:58,570 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-11 02:28:58,570 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-11 02:28:58,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-11 02:28:58,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:28:58,612 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-10-11 02:28:58,612 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:28:58,643 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-10-11 02:28:58,645 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1451993574] [2021-10-11 02:28:58,647 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-10-11 02:28:58,647 INFO L166 IcfgInterpreter]: Building call graph [2021-10-11 02:28:58,648 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-11 02:28:58,648 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-11 02:28:58,648 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-11 02:28:58,962 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-11 02:28:59,165 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 53 [2021-10-11 02:28:59,440 WARN L197 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 70 [2021-10-11 02:28:59,771 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:28:59,771 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-11 02:28:59,771 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 2, 2] total 13 [2021-10-11 02:28:59,772 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530884695] [2021-10-11 02:28:59,772 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-10-11 02:28:59,772 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:28:59,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-11 02:28:59,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2021-10-11 02:28:59,773 INFO L87 Difference]: Start difference. First operand 34 states and 35 transitions. Second operand 14 states. [2021-10-11 02:28:59,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:59,993 INFO L93 Difference]: Finished difference Result 34 states and 35 transitions. [2021-10-11 02:28:59,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-11 02:28:59,994 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 24 [2021-10-11 02:28:59,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:59,994 INFO L225 Difference]: With dead ends: 34 [2021-10-11 02:28:59,994 INFO L226 Difference]: Without dead ends: 33 [2021-10-11 02:28:59,995 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 58 SyntacticMatches, 5 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=196, Invalid=734, Unknown=0, NotChecked=0, Total=930 [2021-10-11 02:28:59,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-10-11 02:28:59,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2021-10-11 02:28:59,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2021-10-11 02:28:59,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2021-10-11 02:28:59,999 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 24 [2021-10-11 02:29:00,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:29:00,000 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2021-10-11 02:29:00,000 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-10-11 02:29:00,000 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2021-10-11 02:29:00,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-11 02:29:00,001 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:29:00,001 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 1, 1, 1] [2021-10-11 02:29:00,201 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2021-10-11 02:29:00,202 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 02:29:00,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:29:00,202 INFO L82 PathProgramCache]: Analyzing trace with hash -719108544, now seen corresponding path program 2 times [2021-10-11 02:29:00,202 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:29:00,202 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337188751] [2021-10-11 02:29:00,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:29:00,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:29:00,300 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-10-11 02:29:00,301 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337188751] [2021-10-11 02:29:00,301 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [85470606] [2021-10-11 02:29:00,301 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c720907e-2c64-472f-b799-de2d9fc45eb0/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:29:00,360 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-10-11 02:29:00,361 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-11 02:29:00,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-11 02:29:00,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:29:00,577 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:29:00,577 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:29:00,929 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:29:00,929 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1880294777] [2021-10-11 02:29:00,932 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-10-11 02:29:00,932 INFO L166 IcfgInterpreter]: Building call graph [2021-10-11 02:29:00,932 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-11 02:29:00,932 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-11 02:29:00,933 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-11 02:29:01,165 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-11 02:29:01,691 WARN L197 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 70 [2021-10-11 02:29:02,062 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:29:02,062 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-11 02:29:02,062 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 15, 15] total 32 [2021-10-11 02:29:02,063 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575641411] [2021-10-11 02:29:02,063 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-10-11 02:29:02,064 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:29:02,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-10-11 02:29:02,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=1280, Unknown=0, NotChecked=0, Total=1482 [2021-10-11 02:29:02,065 INFO L87 Difference]: Start difference. First operand 33 states and 33 transitions. Second operand 33 states. [2021-10-11 02:29:02,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:29:02,301 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2021-10-11 02:29:02,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-11 02:29:02,303 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 32 [2021-10-11 02:29:02,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:29:02,303 INFO L225 Difference]: With dead ends: 33 [2021-10-11 02:29:02,303 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:29:02,305 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 67 SyntacticMatches, 9 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 759 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=377, Invalid=1785, Unknown=0, NotChecked=0, Total=2162 [2021-10-11 02:29:02,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:29:02,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:29:02,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:29:02,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:29:02,305 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 32 [2021-10-11 02:29:02,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:29:02,305 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:29:02,306 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2021-10-11 02:29:02,306 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:29:02,306 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:29:02,520 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:29:02,522 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-11 02:29:02,562 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2021-10-11 02:29:02,562 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-11 02:29:02,562 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2021-10-11 02:29:02,562 INFO L262 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2021-10-11 02:29:02,562 INFO L262 CegarLoopResult]: For program point L25-1(line 25) no Hoare annotation was computed. [2021-10-11 02:29:02,562 INFO L262 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed. [2021-10-11 02:29:02,562 INFO L262 CegarLoopResult]: For program point L25-2(line 25) no Hoare annotation was computed. [2021-10-11 02:29:02,562 INFO L262 CegarLoopResult]: For program point L25-3(line 25) no Hoare annotation was computed. [2021-10-11 02:29:02,562 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2021-10-11 02:29:02,562 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2021-10-11 02:29:02,563 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-11 02:29:02,563 INFO L265 CegarLoopResult]: At program point L28(lines 19 29) the Hoare annotation is: true [2021-10-11 02:29:02,563 INFO L258 CegarLoopResult]: At program point L24-2(lines 24 26) the Hoare annotation is: (and (<= 0 ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~n~0 (+ ULTIMATE.start_main_~k~0 ULTIMATE.start_main_~j~0)) (<= ULTIMATE.start_main_~n~0 2147483647) (<= ULTIMATE.start_main_~k~0 2147483647) (<= 0 ULTIMATE.start_main_~k~0)) [2021-10-11 02:29:02,575 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:29:02 BoogieIcfgContainer [2021-10-11 02:29:02,576 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:29:02,576 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:29:02,576 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:29:02,576 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:29:02,576 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:28:53" (3/4) ... [2021-10-11 02:29:02,579 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:29:02,587 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2021-10-11 02:29:02,588 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-10-11 02:29:02,588 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:29:02,588 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:29:02,621 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c720907e-2c64-472f-b799-de2d9fc45eb0/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:29:02,621 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:29:02,622 INFO L168 Benchmark]: Toolchain (without parser) took 9780.83 ms. Allocated memory was 104.9 MB in the beginning and 157.3 MB in the end (delta: 52.4 MB). Free memory was 71.4 MB in the beginning and 113.6 MB in the end (delta: -42.3 MB). Peak memory consumption was 10.0 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:02,622 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 75.5 MB. Free memory was 37.5 MB in the beginning and 37.4 MB in the end (delta: 34.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:29:02,623 INFO L168 Benchmark]: CACSL2BoogieTranslator took 248.67 ms. Allocated memory is still 104.9 MB. Free memory was 71.2 MB in the beginning and 79.8 MB in the end (delta: -8.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:02,623 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.27 ms. Allocated memory is still 104.9 MB. Free memory was 79.8 MB in the beginning and 78.6 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:02,624 INFO L168 Benchmark]: Boogie Preprocessor took 20.35 ms. Allocated memory is still 104.9 MB. Free memory was 78.6 MB in the beginning and 77.6 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:29:02,624 INFO L168 Benchmark]: RCFGBuilder took 327.52 ms. Allocated memory is still 104.9 MB. Free memory was 77.6 MB in the beginning and 61.9 MB in the end (delta: 15.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:02,625 INFO L168 Benchmark]: TraceAbstraction took 9102.26 ms. Allocated memory was 104.9 MB in the beginning and 157.3 MB in the end (delta: 52.4 MB). Free memory was 61.4 MB in the beginning and 116.8 MB in the end (delta: -55.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:29:02,625 INFO L168 Benchmark]: Witness Printer took 45.20 ms. Allocated memory is still 157.3 MB. Free memory was 116.8 MB in the beginning and 113.6 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:02,627 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 75.5 MB. Free memory was 37.5 MB in the beginning and 37.4 MB in the end (delta: 34.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 248.67 ms. Allocated memory is still 104.9 MB. Free memory was 71.2 MB in the beginning and 79.8 MB in the end (delta: -8.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 30.27 ms. Allocated memory is still 104.9 MB. Free memory was 79.8 MB in the beginning and 78.6 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 20.35 ms. Allocated memory is still 104.9 MB. Free memory was 78.6 MB in the beginning and 77.6 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 327.52 ms. Allocated memory is still 104.9 MB. Free memory was 77.6 MB in the beginning and 61.9 MB in the end (delta: 15.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 9102.26 ms. Allocated memory was 104.9 MB in the beginning and 157.3 MB in the end (delta: 52.4 MB). Free memory was 61.4 MB in the beginning and 116.8 MB in the end (delta: -55.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 45.20 ms. Allocated memory is still 157.3 MB. Free memory was 116.8 MB in the beginning and 113.6 MB in the end (delta: 3.2 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: (((0 <= j && n <= k + j) && n <= 2147483647) && k <= 2147483647) && 0 <= k - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 8.9s, OverallIterations: 8, TraceHistogramMax: 6, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 43 SDtfs, 128 SDslu, 101 SDs, 0 SdLazy, 265 SolverSat, 57 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 311 GetRequests, 159 SyntacticMatches, 18 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1196 ImplicationChecksByTransitivity, 4.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 6 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 8 NumberOfFragments, 19 HoareAnnotationTreeSize, 2 FomulaSimplifications, 105 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 44 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 176 NumberOfCodeBlocks, 156 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 237 ConstructedInterpolants, 0 QuantifiedInterpolants, 22555 SizeOfPredicates, 25 NumberOfNonLiveVariables, 276 ConjunctsInSsa, 35 ConjunctsInUnsatCore, 16 InterpolantComputations, 4 PerfectInterpolantSequences, 123/360 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...