./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/loop-zilu/benchmark05_conjunctive.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_e4963475-0f94-4093-9119-abf841fbb9b6/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_e4963475-0f94-4093-9119-abf841fbb9b6/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_e4963475-0f94-4093-9119-abf841fbb9b6/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_e4963475-0f94-4093-9119-abf841fbb9b6/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-zilu/benchmark05_conjunctive.i -s /tmp/vcloud-vcloud-master/worker/run_dir_e4963475-0f94-4093-9119-abf841fbb9b6/bin/utaipan/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_e4963475-0f94-4093-9119-abf841fbb9b6/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash dc958b9ca44e6df037a80498d8cbf6f2fc13bb26 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-22 13:05:32,459 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 13:05:32,461 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 13:05:32,526 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 13:05:32,527 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 13:05:32,532 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 13:05:32,534 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 13:05:32,541 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 13:05:32,544 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 13:05:32,549 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 13:05:32,550 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 13:05:32,552 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 13:05:32,553 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 13:05:32,556 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 13:05:32,558 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 13:05:32,560 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 13:05:32,561 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 13:05:32,565 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 13:05:32,568 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 13:05:32,579 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 13:05:32,581 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 13:05:32,582 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 13:05:32,584 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 13:05:32,585 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 13:05:32,593 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 13:05:32,594 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 13:05:32,594 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 13:05:32,596 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 13:05:32,597 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 13:05:32,598 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 13:05:32,598 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 13:05:32,599 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 13:05:32,601 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 13:05:32,602 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 13:05:32,603 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 13:05:32,603 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 13:05:32,604 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 13:05:32,604 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 13:05:32,604 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 13:05:32,605 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 13:05:32,607 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 13:05:32,609 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_e4963475-0f94-4093-9119-abf841fbb9b6/bin/utaipan/config/svcomp-Overflow-32bit-Taipan_Default.epf [2020-11-22 13:05:32,655 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 13:05:32,655 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 13:05:32,657 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 13:05:32,657 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 13:05:32,657 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 13:05:32,657 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 13:05:32,657 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 13:05:32,658 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 13:05:32,658 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 13:05:32,658 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 13:05:32,659 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 13:05:32,659 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 13:05:32,660 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 13:05:32,660 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 13:05:32,660 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 13:05:32,661 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 13:05:32,661 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 13:05:32,661 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-22 13:05:32,661 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 13:05:32,661 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 13:05:32,662 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 13:05:32,662 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 13:05:32,662 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 13:05:32,662 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 13:05:32,663 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-11-22 13:05:32,663 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 13:05:32,663 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 13:05:32,663 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 13:05:32,663 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 13:05:32,665 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 13:05:32,665 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 13:05:32,665 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 13:05:32,666 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 13:05:32,666 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 13:05:32,666 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 13:05:32,666 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 13:05:32,666 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 13:05:32,667 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 13:05:32,667 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 13:05:32,667 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 13:05:32,667 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 13:05:32,667 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-vcloud-master/worker/run_dir_e4963475-0f94-4093-9119-abf841fbb9b6/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_e4963475-0f94-4093-9119-abf841fbb9b6/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dc958b9ca44e6df037a80498d8cbf6f2fc13bb26 [2020-11-22 13:05:32,936 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 13:05:32,958 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 13:05:32,961 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 13:05:32,962 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 13:05:32,963 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 13:05:32,964 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_e4963475-0f94-4093-9119-abf841fbb9b6/bin/utaipan/../../sv-benchmarks/c/loop-zilu/benchmark05_conjunctive.i [2020-11-22 13:05:33,044 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e4963475-0f94-4093-9119-abf841fbb9b6/bin/utaipan/data/0d9c671f2/305189c74bb640c0883cfc1574412a9d/FLAG2aa73649b [2020-11-22 13:05:33,560 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 13:05:33,560 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_e4963475-0f94-4093-9119-abf841fbb9b6/sv-benchmarks/c/loop-zilu/benchmark05_conjunctive.i [2020-11-22 13:05:33,566 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e4963475-0f94-4093-9119-abf841fbb9b6/bin/utaipan/data/0d9c671f2/305189c74bb640c0883cfc1574412a9d/FLAG2aa73649b [2020-11-22 13:05:33,947 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_e4963475-0f94-4093-9119-abf841fbb9b6/bin/utaipan/data/0d9c671f2/305189c74bb640c0883cfc1574412a9d [2020-11-22 13:05:33,949 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 13:05:33,951 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 13:05:33,952 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 13:05:33,952 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 13:05:33,955 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 13:05:33,956 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:05:33" (1/1) ... [2020-11-22 13:05:33,958 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62f465f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:33, skipping insertion in model container [2020-11-22 13:05:33,958 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:05:33" (1/1) ... [2020-11-22 13:05:33,965 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 13:05:33,978 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 13:05:34,169 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:05:34,178 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 13:05:34,194 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:05:34,208 INFO L208 MainTranslator]: Completed translation [2020-11-22 13:05:34,208 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:34 WrapperNode [2020-11-22 13:05:34,209 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 13:05:34,210 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 13:05:34,210 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 13:05:34,210 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 13:05:34,218 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:34" (1/1) ... [2020-11-22 13:05:34,225 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:34" (1/1) ... [2020-11-22 13:05:34,242 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 13:05:34,243 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 13:05:34,243 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 13:05:34,243 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 13:05:34,249 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:34" (1/1) ... [2020-11-22 13:05:34,250 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:34" (1/1) ... [2020-11-22 13:05:34,251 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:34" (1/1) ... [2020-11-22 13:05:34,251 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:34" (1/1) ... [2020-11-22 13:05:34,254 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:34" (1/1) ... [2020-11-22 13:05:34,258 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:34" (1/1) ... [2020-11-22 13:05:34,259 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:34" (1/1) ... [2020-11-22 13:05:34,261 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 13:05:34,262 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 13:05:34,262 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 13:05:34,262 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 13:05:34,263 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:34" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e4963475-0f94-4093-9119-abf841fbb9b6/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 13:05:34,330 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-22 13:05:34,330 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 13:05:34,330 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 13:05:34,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 13:05:34,715 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 13:05:34,715 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-22 13:05:34,717 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:05:34 BoogieIcfgContainer [2020-11-22 13:05:34,717 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 13:05:34,719 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 13:05:34,719 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 13:05:34,729 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 13:05:34,730 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:05:33" (1/3) ... [2020-11-22 13:05:34,730 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42e377e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:05:34, skipping insertion in model container [2020-11-22 13:05:34,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:34" (2/3) ... [2020-11-22 13:05:34,731 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42e377e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:05:34, skipping insertion in model container [2020-11-22 13:05:34,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:05:34" (3/3) ... [2020-11-22 13:05:34,733 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark05_conjunctive.i [2020-11-22 13:05:34,743 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 13:05:34,748 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-11-22 13:05:34,760 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-22 13:05:34,784 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 13:05:34,784 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 13:05:34,785 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 13:05:34,785 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 13:05:34,785 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 13:05:34,785 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 13:05:34,785 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 13:05:34,785 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 13:05:34,797 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2020-11-22 13:05:34,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-22 13:05:34,801 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:05:34,801 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-22 13:05:34,802 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-22 13:05:34,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:05:34,807 INFO L82 PathProgramCache]: Analyzing trace with hash 2450102, now seen corresponding path program 1 times [2020-11-22 13:05:34,816 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:05:34,817 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337640095] [2020-11-22 13:05:34,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:05:34,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:05:35,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:35,004 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337640095] [2020-11-22 13:05:35,005 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:05:35,005 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 13:05:35,006 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538199665] [2020-11-22 13:05:35,010 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-22 13:05:35,011 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:05:35,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-22 13:05:35,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-22 13:05:35,027 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 5 states. [2020-11-22 13:05:35,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:05:35,129 INFO L93 Difference]: Finished difference Result 17 states and 19 transitions. [2020-11-22 13:05:35,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-22 13:05:35,131 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 4 [2020-11-22 13:05:35,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:05:35,136 INFO L225 Difference]: With dead ends: 17 [2020-11-22 13:05:35,136 INFO L226 Difference]: Without dead ends: 12 [2020-11-22 13:05:35,139 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-22 13:05:35,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-11-22 13:05:35,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2020-11-22 13:05:35,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-11-22 13:05:35,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2020-11-22 13:05:35,164 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 4 [2020-11-22 13:05:35,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:05:35,164 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2020-11-22 13:05:35,164 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-22 13:05:35,164 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2020-11-22 13:05:35,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-22 13:05:35,165 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:05:35,165 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-22 13:05:35,165 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-22 13:05:35,165 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-22 13:05:35,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:05:35,166 INFO L82 PathProgramCache]: Analyzing trace with hash 75953212, now seen corresponding path program 1 times [2020-11-22 13:05:35,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:05:35,167 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377018918] [2020-11-22 13:05:35,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:05:35,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:05:35,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:35,240 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377018918] [2020-11-22 13:05:35,240 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:05:35,240 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 13:05:35,241 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754875971] [2020-11-22 13:05:35,242 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 13:05:35,242 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:05:35,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 13:05:35,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:05:35,244 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand 4 states. [2020-11-22 13:05:35,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:05:35,281 INFO L93 Difference]: Finished difference Result 11 states and 12 transitions. [2020-11-22 13:05:35,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 13:05:35,282 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2020-11-22 13:05:35,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:05:35,282 INFO L225 Difference]: With dead ends: 11 [2020-11-22 13:05:35,282 INFO L226 Difference]: Without dead ends: 10 [2020-11-22 13:05:35,283 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 [2020-11-22 13:05:35,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-11-22 13:05:35,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2020-11-22 13:05:35,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-11-22 13:05:35,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2020-11-22 13:05:35,286 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 5 [2020-11-22 13:05:35,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:05:35,286 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2020-11-22 13:05:35,286 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 13:05:35,286 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2020-11-22 13:05:35,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-22 13:05:35,287 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:05:35,287 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:05:35,287 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-22 13:05:35,287 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-22 13:05:35,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:05:35,288 INFO L82 PathProgramCache]: Analyzing trace with hash -23405602, now seen corresponding path program 1 times [2020-11-22 13:05:35,288 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:05:35,289 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211302307] [2020-11-22 13:05:35,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:05:35,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:05:35,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:35,360 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211302307] [2020-11-22 13:05:35,360 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:05:35,360 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 13:05:35,360 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365190875] [2020-11-22 13:05:35,361 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-22 13:05:35,361 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:05:35,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-22 13:05:35,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-22 13:05:35,362 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand 5 states. [2020-11-22 13:05:35,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:05:35,441 INFO L93 Difference]: Finished difference Result 18 states and 20 transitions. [2020-11-22 13:05:35,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-22 13:05:35,442 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2020-11-22 13:05:35,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:05:35,443 INFO L225 Difference]: With dead ends: 18 [2020-11-22 13:05:35,443 INFO L226 Difference]: Without dead ends: 17 [2020-11-22 13:05:35,444 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-22 13:05:35,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-11-22 13:05:35,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15. [2020-11-22 13:05:35,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-11-22 13:05:35,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2020-11-22 13:05:35,448 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 7 [2020-11-22 13:05:35,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:05:35,448 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2020-11-22 13:05:35,448 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-22 13:05:35,448 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2020-11-22 13:05:35,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-22 13:05:35,449 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:05:35,449 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:05:35,449 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-22 13:05:35,449 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-22 13:05:35,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:05:35,450 INFO L82 PathProgramCache]: Analyzing trace with hash -725573605, now seen corresponding path program 1 times [2020-11-22 13:05:35,450 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:05:35,450 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619798303] [2020-11-22 13:05:35,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:05:35,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:05:35,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:35,526 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619798303] [2020-11-22 13:05:35,526 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:05:35,526 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 13:05:35,527 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944022699] [2020-11-22 13:05:35,527 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 13:05:35,527 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:05:35,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 13:05:35,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:05:35,528 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand 4 states. [2020-11-22 13:05:35,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:05:35,565 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2020-11-22 13:05:35,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 13:05:35,566 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-11-22 13:05:35,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:05:35,566 INFO L225 Difference]: With dead ends: 15 [2020-11-22 13:05:35,567 INFO L226 Difference]: Without dead ends: 14 [2020-11-22 13:05:35,567 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 [2020-11-22 13:05:35,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-11-22 13:05:35,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-11-22 13:05:35,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-11-22 13:05:35,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2020-11-22 13:05:35,571 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 8 [2020-11-22 13:05:35,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:05:35,571 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2020-11-22 13:05:35,571 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 13:05:35,571 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2020-11-22 13:05:35,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-22 13:05:35,572 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:05:35,572 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1] [2020-11-22 13:05:35,572 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-22 13:05:35,573 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-22 13:05:35,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:05:35,573 INFO L82 PathProgramCache]: Analyzing trace with hash 1532298775, now seen corresponding path program 1 times [2020-11-22 13:05:35,573 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:05:35,574 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028693017] [2020-11-22 13:05:35,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:05:35,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:05:35,698 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:35,699 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028693017] [2020-11-22 13:05:35,699 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1635669417] [2020-11-22 13:05:35,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e4963475-0f94-4093-9119-abf841fbb9b6/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 13:05:35,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:05:35,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-22 13:05:35,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:05:35,846 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:35,850 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:05:35,908 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:35,909 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1054605288] [2020-11-22 13:05:35,930 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2020-11-22 13:05:35,931 INFO L166 IcfgInterpreter]: Building call graph [2020-11-22 13:05:35,936 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-22 13:05:35,942 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-22 13:05:35,942 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-22 13:05:36,553 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-22 13:05:36,726 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 53 [2020-11-22 13:05:37,302 WARN L193 SmtUtils]: Spent 510.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 54 [2020-11-22 13:05:37,720 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 55 [2020-11-22 13:05:38,230 WARN L193 SmtUtils]: Spent 376.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 52 [2020-11-22 13:05:38,455 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 51 [2020-11-22 13:05:38,586 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2020-11-22 13:05:38,586 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5, 5] total 14 [2020-11-22 13:05:38,587 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920762382] [2020-11-22 13:05:38,587 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-22 13:05:38,587 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:05:38,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-22 13:05:38,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2020-11-22 13:05:38,589 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand 7 states. [2020-11-22 13:05:38,902 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 51 [2020-11-22 13:05:39,063 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 52 [2020-11-22 13:05:39,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:05:39,090 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2020-11-22 13:05:39,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-22 13:05:39,090 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2020-11-22 13:05:39,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:05:39,091 INFO L225 Difference]: With dead ends: 20 [2020-11-22 13:05:39,091 INFO L226 Difference]: Without dead ends: 0 [2020-11-22 13:05:39,091 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 23 SyntacticMatches, 5 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2020-11-22 13:05:39,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-22 13:05:39,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-22 13:05:39,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-22 13:05:39,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-22 13:05:39,092 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2020-11-22 13:05:39,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:05:39,092 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-22 13:05:39,092 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-22 13:05:39,093 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-22 13:05:39,093 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-22 13:05:39,293 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 13:05:39,295 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-22 13:05:39,592 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 55 [2020-11-22 13:05:39,633 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2020-11-22 13:05:39,634 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-22 13:05:39,634 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 26) no Hoare annotation was computed. [2020-11-22 13:05:39,634 INFO L270 CegarLoopResult]: At program point L29(lines 19 30) the Hoare annotation is: (<= ULTIMATE.start_main_~n~0 2147483647) [2020-11-22 13:05:39,634 INFO L274 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-11-22 13:05:39,634 INFO L274 CegarLoopResult]: For program point L25-1(line 25) no Hoare annotation was computed. [2020-11-22 13:05:39,634 INFO L274 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed. [2020-11-22 13:05:39,635 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2020-11-22 13:05:39,635 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 26) no Hoare annotation was computed. [2020-11-22 13:05:39,635 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-22 13:05:39,635 INFO L274 CegarLoopResult]: For program point L26(line 26) no Hoare annotation was computed. [2020-11-22 13:05:39,635 INFO L274 CegarLoopResult]: For program point L26-1(line 26) no Hoare annotation was computed. [2020-11-22 13:05:39,635 INFO L274 CegarLoopResult]: For program point L26-2(line 26) no Hoare annotation was computed. [2020-11-22 13:05:39,636 INFO L270 CegarLoopResult]: At program point L26-4(lines 24 27) the Hoare annotation is: (and (<= 0 ULTIMATE.start_main_~x~0) (let ((.cse15 (select |#memory_int| |#t~string0.base|))) (let ((.cse0 (= |#t~string1.offset| 0)) (.cse1 (= (select |#length| |#t~string1.base|) 26)) (.cse2 (<= ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~y~0)) (.cse3 (= |#NULL.base| 0)) (.cse4 (= (select .cse15 |#t~string0.offset|) 48)) (.cse5 (= (select .cse15 (+ |#t~string0.offset| 1)) 0)) (.cse6 (= (select |#valid| 0) 0)) (.cse7 (= 2 (select |#length| |#t~string0.base|))) (.cse8 (< |#StackHeapBarrier| |#t~string0.base|)) (.cse9 (= (select |#valid| |#t~string0.base|) 1)) (.cse10 (< 0 |#StackHeapBarrier|)) (.cse11 (< |#StackHeapBarrier| |#t~string1.base|)) (.cse12 (= |#NULL.offset| 0)) (.cse13 (= (select |#valid| |#t~string1.base|) 1)) (.cse14 (= |#t~string0.offset| 0))) (or (and .cse0 .cse1 .cse2 (< ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~n~0) .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 (<= 1 ULTIMATE.start_main_~x~0) .cse7 (< ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~n~0 1)) (< ULTIMATE.start_main_~y~0 (+ ULTIMATE.start_main_~x~0 1)) .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14)))) (<= ULTIMATE.start_main_~n~0 2147483647)) [2020-11-22 13:05:39,646 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-22 13:05:39,655 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-22 13:05:39,656 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-22 13:05:39,656 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-22 13:05:39,656 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-22 13:05:39,657 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-22 13:05:39,657 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-22 13:05:39,657 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-22 13:05:39,657 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-22 13:05:39,657 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-22 13:05:39,658 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-22 13:05:39,658 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-22 13:05:39,658 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-22 13:05:39,658 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-22 13:05:39,658 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-22 13:05:39,659 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-22 13:05:39,659 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-22 13:05:39,659 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-22 13:05:39,675 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-22 13:05:39,676 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-22 13:05:39,676 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-22 13:05:39,677 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-22 13:05:39,677 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-22 13:05:39,677 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-22 13:05:39,678 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-22 13:05:39,678 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-22 13:05:39,679 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-22 13:05:39,679 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-22 13:05:39,679 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-22 13:05:39,679 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-22 13:05:39,679 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-22 13:05:39,680 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-22 13:05:39,680 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-22 13:05:39,680 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-22 13:05:39,680 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-22 13:05:39,681 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-22 13:05:39,692 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 01:05:39 BoogieIcfgContainer [2020-11-22 13:05:39,692 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 13:05:39,693 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 13:05:39,693 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 13:05:39,693 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 13:05:39,693 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:05:34" (3/4) ... [2020-11-22 13:05:39,696 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-22 13:05:39,706 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2020-11-22 13:05:39,706 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2020-11-22 13:05:39,706 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-22 13:05:39,706 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-22 13:05:39,759 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_e4963475-0f94-4093-9119-abf841fbb9b6/bin/utaipan/witness.graphml [2020-11-22 13:05:39,760 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 13:05:39,761 INFO L168 Benchmark]: Toolchain (without parser) took 5809.86 ms. Allocated memory was 83.9 MB in the beginning and 151.0 MB in the end (delta: 67.1 MB). Free memory was 59.0 MB in the beginning and 71.8 MB in the end (delta: -12.9 MB). Peak memory consumption was 53.5 MB. Max. memory is 16.1 GB. [2020-11-22 13:05:39,762 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 83.9 MB. Free memory was 41.2 MB in the beginning and 41.1 MB in the end (delta: 49.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:05:39,762 INFO L168 Benchmark]: CACSL2BoogieTranslator took 257.21 ms. Allocated memory was 83.9 MB in the beginning and 104.9 MB in the end (delta: 21.0 MB). Free memory was 58.7 MB in the beginning and 82.8 MB in the end (delta: -24.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-22 13:05:39,763 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.57 ms. Allocated memory is still 104.9 MB. Free memory was 82.8 MB in the beginning and 81.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:05:39,763 INFO L168 Benchmark]: Boogie Preprocessor took 18.09 ms. Allocated memory is still 104.9 MB. Free memory was 81.2 MB in the beginning and 80.4 MB in the end (delta: 767.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:05:39,764 INFO L168 Benchmark]: RCFGBuilder took 455.40 ms. Allocated memory is still 104.9 MB. Free memory was 80.4 MB in the beginning and 63.6 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-11-22 13:05:39,765 INFO L168 Benchmark]: TraceAbstraction took 4973.60 ms. Allocated memory was 104.9 MB in the beginning and 151.0 MB in the end (delta: 46.1 MB). Free memory was 62.8 MB in the beginning and 73.9 MB in the end (delta: -11.1 MB). Peak memory consumption was 38.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:05:39,765 INFO L168 Benchmark]: Witness Printer took 67.20 ms. Allocated memory is still 151.0 MB. Free memory was 73.9 MB in the beginning and 71.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:05:39,768 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 83.9 MB. Free memory was 41.2 MB in the beginning and 41.1 MB in the end (delta: 49.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 257.21 ms. Allocated memory was 83.9 MB in the beginning and 104.9 MB in the end (delta: 21.0 MB). Free memory was 58.7 MB in the beginning and 82.8 MB in the end (delta: -24.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 32.57 ms. Allocated memory is still 104.9 MB. Free memory was 82.8 MB in the beginning and 81.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 18.09 ms. Allocated memory is still 104.9 MB. Free memory was 81.2 MB in the beginning and 80.4 MB in the end (delta: 767.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 455.40 ms. Allocated memory is still 104.9 MB. Free memory was 80.4 MB in the beginning and 63.6 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4973.60 ms. Allocated memory was 104.9 MB in the beginning and 151.0 MB in the end (delta: 46.1 MB). Free memory was 62.8 MB in the beginning and 73.9 MB in the end (delta: -11.1 MB). Peak memory consumption was 38.1 MB. Max. memory is 16.1 GB. * Witness Printer took 67.20 ms. Allocated memory is still 151.0 MB. Free memory was 73.9 MB in the beginning and 71.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 26]: 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: 26]: 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 [2020-11-22 13:05:39,793 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-22 13:05:39,799 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-22 13:05:39,799 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-22 13:05:39,800 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-22 13:05:39,800 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-22 13:05:39,800 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-22 13:05:39,800 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-22 13:05:39,801 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-22 13:05:39,801 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-22 13:05:39,801 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-22 13:05:39,801 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-22 13:05:39,801 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-22 13:05:39,802 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-22 13:05:39,802 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-22 13:05:39,802 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-22 13:05:39,802 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-22 13:05:39,802 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-22 13:05:39,803 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-22 13:05:39,804 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-22 13:05:39,805 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-22 13:05:39,805 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-22 13:05:39,805 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-22 13:05:39,807 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-22 13:05:39,807 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-22 13:05:39,807 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-22 13:05:39,807 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-22 13:05:39,808 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-22 13:05:39,808 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-22 13:05:39,808 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-22 13:05:39,808 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-22 13:05:39,809 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-22 13:05:39,809 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-22 13:05:39,809 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-22 13:05:39,809 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-22 13:05:39,810 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-22 13:05:39,810 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL Derived loop invariant: (0 <= x && (((((((((((((((("benchmark05_conjunctive.c" == 0 && unknown-#length-unknown["benchmark05_conjunctive.c"] == 26) && x <= y) && y < n) && #NULL == 0) && unknown-#memory_int-unknown["0"]["0"] == 48) && unknown-#memory_int-unknown["0"]["0" + 1] == 0) && \valid[0] == 0) && 2 == unknown-#length-unknown["0"]) && unknown-#StackHeapBarrier-unknown < "0") && \valid["0"] == 1) && 0 < unknown-#StackHeapBarrier-unknown) && unknown-#StackHeapBarrier-unknown < "benchmark05_conjunctive.c") && #NULL == 0) && \valid["benchmark05_conjunctive.c"] == 1) && "0" == 0) || ((((((((((((((((("benchmark05_conjunctive.c" == 0 && unknown-#length-unknown["benchmark05_conjunctive.c"] == 26) && x <= y) && #NULL == 0) && unknown-#memory_int-unknown["0"]["0"] == 48) && unknown-#memory_int-unknown["0"]["0" + 1] == 0) && \valid[0] == 0) && 1 <= x) && 2 == unknown-#length-unknown["0"]) && x < n + 1) && y < x + 1) && unknown-#StackHeapBarrier-unknown < "0") && \valid["0"] == 1) && 0 < unknown-#StackHeapBarrier-unknown) && unknown-#StackHeapBarrier-unknown < "benchmark05_conjunctive.c") && #NULL == 0) && \valid["benchmark05_conjunctive.c"] == 1) && "0" == 0))) && n <= 2147483647 - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: n <= 2147483647 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.5s, OverallIterations: 5, TraceHistogramMax: 2, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 24 SDtfs, 71 SDslu, 27 SDs, 0 SdLazy, 87 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 62 GetRequests, 24 SyntacticMatches, 5 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 2.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=3, 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, 3 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 6 NumberOfFragments, 159 HoareAnnotationTreeSize, 2 FomulaSimplifications, 165 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 262 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 50 NumberOfCodeBlocks, 50 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 56 ConstructedInterpolants, 0 QuantifiedInterpolants, 2172 SizeOfPredicates, 6 NumberOfNonLiveVariables, 59 ConjunctsInSsa, 7 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: OVERALL_TIME[ms]: 624, ICFG_INTERPRETER_ENTERED_PROCEDURES: 1, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 9, DAG_INTERPRETER_EARLY_EXITS: 0, TOOLS_POST_APPLICATIONS: 18, TOOLS_POST_TIME[ms]: 176, TOOLS_POST_CALL_APPLICATIONS: 0, TOOLS_POST_CALL_TIME[ms]: 0, TOOLS_POST_RETURN_APPLICATIONS: 0, TOOLS_POST_RETURN_TIME[ms]: 0, TOOLS_QUANTIFIERELIM_APPLICATIONS: 18, TOOLS_QUANTIFIERELIM_TIME[ms]: 167, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 131, FLUID_QUERY_TIME[ms]: 3, FLUID_QUERIES: 31, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 3, DOMAIN_JOIN_TIME[ms]: 363, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME[ms]: 0, DOMAIN_WIDEN_APPLICATIONS: 0, DOMAIN_WIDEN_TIME[ms]: 0, DOMAIN_ISSUBSETEQ_APPLICATIONS: 1, DOMAIN_ISSUBSETEQ_TIME[ms]: 9, DOMAIN_ISBOTTOM_APPLICATIONS: 9, DOMAIN_ISBOTTOM_TIME[ms]: 25, LOOP_SUMMARIZER_APPLICATIONS: 1, LOOP_SUMMARIZER_CACHE_MISSES: 1, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 24, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 24, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 1, CALL_SUMMARIZER_APPLICATIONS: 0, CALL_SUMMARIZER_CACHE_MISSES: 0, CALL_SUMMARIZER_OVERALL_TIME[ms]: 0, CALL_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 0, PROCEDURE_GRAPH_BUILDER_TIME[ms]: 2, PATH_EXPR_TIME[ms]: 3, REGEX_TO_DAG_TIME[ms]: 3, DAG_COMPRESSION_TIME[ms]: 9, DAG_COMPRESSION_PROCESSED_NODES: 103, DAG_COMPRESSION_RETAINED_NODES: 33, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...