./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/loop-zilu/benchmark04_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_995b453a-e3fb-49c2-9385-4cc519a02b5c/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_995b453a-e3fb-49c2-9385-4cc519a02b5c/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_995b453a-e3fb-49c2-9385-4cc519a02b5c/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_995b453a-e3fb-49c2-9385-4cc519a02b5c/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-zilu/benchmark04_conjunctive.i -s /tmp/vcloud-vcloud-master/worker/run_dir_995b453a-e3fb-49c2-9385-4cc519a02b5c/bin/utaipan/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_995b453a-e3fb-49c2-9385-4cc519a02b5c/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 6e3d50e5c95506905bfc503f1fcedc0356db6a24 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 12:56:44,512 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 12:56:44,514 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 12:56:44,553 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 12:56:44,553 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 12:56:44,577 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 12:56:44,580 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 12:56:44,582 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 12:56:44,584 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 12:56:44,585 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 12:56:44,586 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 12:56:44,588 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 12:56:44,591 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 12:56:44,599 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 12:56:44,601 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 12:56:44,606 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 12:56:44,608 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 12:56:44,611 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 12:56:44,618 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 12:56:44,621 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 12:56:44,622 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 12:56:44,624 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 12:56:44,625 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 12:56:44,626 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 12:56:44,635 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 12:56:44,638 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 12:56:44,638 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 12:56:44,639 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 12:56:44,641 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 12:56:44,642 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 12:56:44,643 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 12:56:44,644 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 12:56:44,645 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 12:56:44,646 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 12:56:44,648 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 12:56:44,649 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 12:56:44,649 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 12:56:44,650 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 12:56:44,650 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 12:56:44,651 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 12:56:44,651 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 12:56:44,654 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_995b453a-e3fb-49c2-9385-4cc519a02b5c/bin/utaipan/config/svcomp-Overflow-32bit-Taipan_Default.epf [2020-11-22 12:56:44,697 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 12:56:44,698 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 12:56:44,699 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 12:56:44,699 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 12:56:44,700 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 12:56:44,700 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 12:56:44,700 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 12:56:44,700 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 12:56:44,701 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 12:56:44,701 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 12:56:44,702 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 12:56:44,702 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 12:56:44,702 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 12:56:44,703 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 12:56:44,703 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 12:56:44,704 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 12:56:44,704 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 12:56:44,704 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-22 12:56:44,704 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 12:56:44,704 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 12:56:44,705 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 12:56:44,705 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 12:56:44,705 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 12:56:44,705 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 12:56:44,706 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-11-22 12:56:44,706 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 12:56:44,706 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 12:56:44,706 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 12:56:44,707 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 12:56:44,708 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 12:56:44,709 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 12:56:44,709 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 12:56:44,709 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 12:56:44,710 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 12:56:44,710 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 12:56:44,710 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 12:56:44,710 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 12:56:44,711 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 12:56:44,711 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 12:56:44,711 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 12:56:44,711 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 12:56:44,711 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_995b453a-e3fb-49c2-9385-4cc519a02b5c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_995b453a-e3fb-49c2-9385-4cc519a02b5c/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6e3d50e5c95506905bfc503f1fcedc0356db6a24 [2020-11-22 12:56:44,991 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 12:56:45,031 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 12:56:45,040 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 12:56:45,041 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 12:56:45,042 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 12:56:45,043 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_995b453a-e3fb-49c2-9385-4cc519a02b5c/bin/utaipan/../../sv-benchmarks/c/loop-zilu/benchmark04_conjunctive.i [2020-11-22 12:56:45,124 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_995b453a-e3fb-49c2-9385-4cc519a02b5c/bin/utaipan/data/8144a5560/fec9aa95364343a7babb8e385f63126c/FLAG9d3c7bcd4 [2020-11-22 12:56:45,556 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 12:56:45,557 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_995b453a-e3fb-49c2-9385-4cc519a02b5c/sv-benchmarks/c/loop-zilu/benchmark04_conjunctive.i [2020-11-22 12:56:45,579 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_995b453a-e3fb-49c2-9385-4cc519a02b5c/bin/utaipan/data/8144a5560/fec9aa95364343a7babb8e385f63126c/FLAG9d3c7bcd4 [2020-11-22 12:56:45,958 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_995b453a-e3fb-49c2-9385-4cc519a02b5c/bin/utaipan/data/8144a5560/fec9aa95364343a7babb8e385f63126c [2020-11-22 12:56:45,960 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 12:56:45,962 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 12:56:45,963 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 12:56:45,963 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 12:56:45,967 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 12:56:45,967 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:56:45" (1/1) ... [2020-11-22 12:56:45,969 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e5831b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:45, skipping insertion in model container [2020-11-22 12:56:45,969 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:56:45" (1/1) ... [2020-11-22 12:56:45,976 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 12:56:45,990 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 12:56:46,191 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:56:46,206 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 12:56:46,226 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:56:46,244 INFO L208 MainTranslator]: Completed translation [2020-11-22 12:56:46,245 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:46 WrapperNode [2020-11-22 12:56:46,245 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 12:56:46,247 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 12:56:46,247 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 12:56:46,247 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 12:56:46,253 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:46" (1/1) ... [2020-11-22 12:56:46,259 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:46" (1/1) ... [2020-11-22 12:56:46,276 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 12:56:46,277 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 12:56:46,277 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 12:56:46,277 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 12:56:46,285 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:46" (1/1) ... [2020-11-22 12:56:46,285 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:46" (1/1) ... [2020-11-22 12:56:46,286 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:46" (1/1) ... [2020-11-22 12:56:46,287 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:46" (1/1) ... [2020-11-22 12:56:46,290 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:46" (1/1) ... [2020-11-22 12:56:46,293 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:46" (1/1) ... [2020-11-22 12:56:46,294 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:46" (1/1) ... [2020-11-22 12:56:46,296 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 12:56:46,296 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 12:56:46,297 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 12:56:46,297 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 12:56:46,298 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:46" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_995b453a-e3fb-49c2-9385-4cc519a02b5c/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 12:56:46,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-22 12:56:46,370 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 12:56:46,372 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 12:56:46,372 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 12:56:46,723 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 12:56:46,723 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-22 12:56:46,725 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:56:46 BoogieIcfgContainer [2020-11-22 12:56:46,726 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 12:56:46,727 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 12:56:46,727 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 12:56:46,730 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 12:56:46,730 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 12:56:45" (1/3) ... [2020-11-22 12:56:46,731 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@110be518 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:56:46, skipping insertion in model container [2020-11-22 12:56:46,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:46" (2/3) ... [2020-11-22 12:56:46,732 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@110be518 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:56:46, skipping insertion in model container [2020-11-22 12:56:46,732 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:56:46" (3/3) ... [2020-11-22 12:56:46,733 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark04_conjunctive.i [2020-11-22 12:56:46,744 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 12:56:46,747 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-11-22 12:56:46,762 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-11-22 12:56:46,806 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 12:56:46,806 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 12:56:46,807 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 12:56:46,807 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 12:56:46,807 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 12:56:46,807 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 12:56:46,807 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 12:56:46,807 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 12:56:46,827 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2020-11-22 12:56:46,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-11-22 12:56:46,839 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:56:46,840 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-11-22 12:56:46,841 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-22 12:56:46,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:56:46,847 INFO L82 PathProgramCache]: Analyzing trace with hash 77109, now seen corresponding path program 1 times [2020-11-22 12:56:46,856 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:56:46,857 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572514177] [2020-11-22 12:56:46,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:56:46,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:56:47,042 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 12:56:47,043 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572514177] [2020-11-22 12:56:47,044 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:56:47,044 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-22 12:56:47,045 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765373625] [2020-11-22 12:56:47,059 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:56:47,060 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:56:47,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:56:47,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:56:47,080 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 3 states. [2020-11-22 12:56:47,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:56:47,126 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2020-11-22 12:56:47,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:56:47,127 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-11-22 12:56:47,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:56:47,144 INFO L225 Difference]: With dead ends: 21 [2020-11-22 12:56:47,150 INFO L226 Difference]: Without dead ends: 14 [2020-11-22 12:56:47,152 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:56:47,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-11-22 12:56:47,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-11-22 12:56:47,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-11-22 12:56:47,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2020-11-22 12:56:47,188 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 3 [2020-11-22 12:56:47,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:56:47,188 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2020-11-22 12:56:47,188 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:56:47,189 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2020-11-22 12:56:47,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-22 12:56:47,189 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:56:47,189 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-22 12:56:47,190 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-22 12:56:47,191 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-22 12:56:47,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:56:47,194 INFO L82 PathProgramCache]: Analyzing trace with hash 2390424, now seen corresponding path program 1 times [2020-11-22 12:56:47,194 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:56:47,195 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761672507] [2020-11-22 12:56:47,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:56:47,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:56:47,252 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 12:56:47,252 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761672507] [2020-11-22 12:56:47,253 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:56:47,253 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 12:56:47,253 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56172252] [2020-11-22 12:56:47,254 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:56:47,254 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:56:47,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:56:47,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:56:47,255 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 3 states. [2020-11-22 12:56:47,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:56:47,276 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2020-11-22 12:56:47,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:56:47,277 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-11-22 12:56:47,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:56:47,278 INFO L225 Difference]: With dead ends: 14 [2020-11-22 12:56:47,278 INFO L226 Difference]: Without dead ends: 13 [2020-11-22 12:56:47,279 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:56:47,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-11-22 12:56:47,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-11-22 12:56:47,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-11-22 12:56:47,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2020-11-22 12:56:47,282 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 4 [2020-11-22 12:56:47,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:56:47,282 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2020-11-22 12:56:47,282 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:56:47,282 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2020-11-22 12:56:47,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-22 12:56:47,282 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:56:47,283 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-22 12:56:47,283 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-22 12:56:47,283 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-22 12:56:47,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:56:47,284 INFO L82 PathProgramCache]: Analyzing trace with hash -1997768230, now seen corresponding path program 1 times [2020-11-22 12:56:47,284 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:56:47,286 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106639135] [2020-11-22 12:56:47,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:56:47,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:56:47,352 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 12:56:47,352 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106639135] [2020-11-22 12:56:47,353 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:56:47,353 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 12:56:47,353 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620134825] [2020-11-22 12:56:47,353 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 12:56:47,354 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:56:47,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 12:56:47,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-22 12:56:47,355 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 4 states. [2020-11-22 12:56:47,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:56:47,408 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2020-11-22 12:56:47,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-22 12:56:47,410 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-11-22 12:56:47,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:56:47,410 INFO L225 Difference]: With dead ends: 20 [2020-11-22 12:56:47,411 INFO L226 Difference]: Without dead ends: 19 [2020-11-22 12:56:47,411 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 12:56:47,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-11-22 12:56:47,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 17. [2020-11-22 12:56:47,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-11-22 12:56:47,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2020-11-22 12:56:47,415 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 6 [2020-11-22 12:56:47,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:56:47,416 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2020-11-22 12:56:47,416 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 12:56:47,416 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2020-11-22 12:56:47,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-22 12:56:47,416 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:56:47,417 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:56:47,417 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-22 12:56:47,417 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-22 12:56:47,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:56:47,418 INFO L82 PathProgramCache]: Analyzing trace with hash -1801272932, now seen corresponding path program 1 times [2020-11-22 12:56:47,418 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:56:47,418 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049029382] [2020-11-22 12:56:47,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:56:47,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:56:47,486 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 12:56:47,486 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049029382] [2020-11-22 12:56:47,486 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:56:47,486 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 12:56:47,486 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42808198] [2020-11-22 12:56:47,486 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 12:56:47,487 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:56:47,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 12:56:47,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-22 12:56:47,487 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 4 states. [2020-11-22 12:56:47,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:56:47,517 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2020-11-22 12:56:47,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 12:56:47,518 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-11-22 12:56:47,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:56:47,518 INFO L225 Difference]: With dead ends: 17 [2020-11-22 12:56:47,519 INFO L226 Difference]: Without dead ends: 16 [2020-11-22 12:56:47,519 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 12:56:47,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-11-22 12:56:47,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-11-22 12:56:47,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-11-22 12:56:47,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2020-11-22 12:56:47,523 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 7 [2020-11-22 12:56:47,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:56:47,523 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2020-11-22 12:56:47,523 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 12:56:47,523 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2020-11-22 12:56:47,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-22 12:56:47,524 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:56:47,524 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:56:47,524 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-22 12:56:47,524 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-22 12:56:47,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:56:47,525 INFO L82 PathProgramCache]: Analyzing trace with hash -4885988, now seen corresponding path program 1 times [2020-11-22 12:56:47,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:56:47,525 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959889105] [2020-11-22 12:56:47,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:56:47,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:56:47,588 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 12:56:47,588 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959889105] [2020-11-22 12:56:47,588 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:56:47,589 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 12:56:47,589 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209959298] [2020-11-22 12:56:47,589 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 12:56:47,589 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:56:47,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 12:56:47,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-22 12:56:47,590 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 4 states. [2020-11-22 12:56:47,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:56:47,624 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2020-11-22 12:56:47,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 12:56:47,625 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-11-22 12:56:47,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:56:47,625 INFO L225 Difference]: With dead ends: 16 [2020-11-22 12:56:47,625 INFO L226 Difference]: Without dead ends: 15 [2020-11-22 12:56:47,626 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 12:56:47,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-11-22 12:56:47,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-11-22 12:56:47,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-11-22 12:56:47,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2020-11-22 12:56:47,629 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 8 [2020-11-22 12:56:47,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:56:47,630 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2020-11-22 12:56:47,630 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 12:56:47,630 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2020-11-22 12:56:47,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-22 12:56:47,630 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:56:47,630 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:56:47,630 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-22 12:56:47,631 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-22 12:56:47,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:56:47,631 INFO L82 PathProgramCache]: Analyzing trace with hash -151465570, now seen corresponding path program 1 times [2020-11-22 12:56:47,631 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:56:47,632 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689918513] [2020-11-22 12:56:47,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:56:47,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:56:47,712 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 12:56:47,712 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689918513] [2020-11-22 12:56:47,712 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:56:47,712 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 12:56:47,713 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783222426] [2020-11-22 12:56:47,713 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 12:56:47,713 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:56:47,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 12:56:47,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-22 12:56:47,714 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 4 states. [2020-11-22 12:56:47,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:56:47,747 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2020-11-22 12:56:47,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 12:56:47,747 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-11-22 12:56:47,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:56:47,748 INFO L225 Difference]: With dead ends: 19 [2020-11-22 12:56:47,748 INFO L226 Difference]: Without dead ends: 18 [2020-11-22 12:56:47,748 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 12:56:47,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-11-22 12:56:47,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-11-22 12:56:47,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-11-22 12:56:47,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2020-11-22 12:56:47,752 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 9 [2020-11-22 12:56:47,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:56:47,753 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2020-11-22 12:56:47,753 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 12:56:47,753 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2020-11-22 12:56:47,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-22 12:56:47,753 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:56:47,754 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:56:47,754 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-22 12:56:47,754 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-22 12:56:47,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:56:47,755 INFO L82 PathProgramCache]: Analyzing trace with hash 1156517314, now seen corresponding path program 1 times [2020-11-22 12:56:47,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:56:47,755 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487430981] [2020-11-22 12:56:47,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:56:47,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:56:47,819 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:56:47,819 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487430981] [2020-11-22 12:56:47,819 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1053676410] [2020-11-22 12:56:47,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_995b453a-e3fb-49c2-9385-4cc519a02b5c/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 12:56:47,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:56:47,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-22 12:56:47,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:56:47,948 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:56:47,954 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:56:48,027 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:56:48,027 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [892923639] [2020-11-22 12:56:48,046 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2020-11-22 12:56:48,047 INFO L166 IcfgInterpreter]: Building call graph [2020-11-22 12:56:48,051 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-22 12:56:48,056 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-22 12:56:48,057 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-22 12:56:48,619 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-22 12:56:48,758 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 53 [2020-11-22 12:56:49,181 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2020-11-22 12:56:49,181 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5, 5] total 13 [2020-11-22 12:56:49,182 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16879607] [2020-11-22 12:56:49,182 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-22 12:56:49,183 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:56:49,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-22 12:56:49,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2020-11-22 12:56:49,184 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 6 states. [2020-11-22 12:56:49,357 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 51 [2020-11-22 12:56:49,524 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 53 [2020-11-22 12:56:49,702 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 52 [2020-11-22 12:56:49,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:56:49,717 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2020-11-22 12:56:49,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-22 12:56:49,718 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-11-22 12:56:49,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:56:49,719 INFO L225 Difference]: With dead ends: 18 [2020-11-22 12:56:49,719 INFO L226 Difference]: Without dead ends: 17 [2020-11-22 12:56:49,720 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 23 SyntacticMatches, 7 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2020-11-22 12:56:49,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-11-22 12:56:49,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-11-22 12:56:49,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-11-22 12:56:49,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2020-11-22 12:56:49,723 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 13 [2020-11-22 12:56:49,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:56:49,723 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2020-11-22 12:56:49,723 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-22 12:56:49,723 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2020-11-22 12:56:49,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-22 12:56:49,724 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:56:49,724 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2020-11-22 12:56:49,925 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-11-22 12:56:49,925 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-22 12:56:49,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:56:49,926 INFO L82 PathProgramCache]: Analyzing trace with hash -420293450, now seen corresponding path program 1 times [2020-11-22 12:56:49,926 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:56:49,926 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977217251] [2020-11-22 12:56:49,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:56:49,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:56:49,989 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:56:49,989 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977217251] [2020-11-22 12:56:49,989 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [22276987] [2020-11-22 12:56:49,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_995b453a-e3fb-49c2-9385-4cc519a02b5c/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 12:56:50,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:56:50,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-22 12:56:50,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:56:50,124 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:56:50,127 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:56:50,323 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:56:50,323 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [432656479] [2020-11-22 12:56:50,325 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2020-11-22 12:56:50,325 INFO L166 IcfgInterpreter]: Building call graph [2020-11-22 12:56:50,326 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-22 12:56:50,326 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-22 12:56:50,326 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-22 12:56:50,642 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-22 12:56:50,784 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 28 [2020-11-22 12:56:50,971 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 53 [2020-11-22 12:56:51,288 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 29 [2020-11-22 12:56:51,666 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-22 12:56:51,667 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-11-22 12:56:51,667 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 15 [2020-11-22 12:56:51,667 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54972401] [2020-11-22 12:56:51,667 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-11-22 12:56:51,668 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:56:51,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-11-22 12:56:51,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2020-11-22 12:56:51,669 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 16 states. [2020-11-22 12:56:52,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:56:52,046 INFO L93 Difference]: Finished difference Result 46 states and 49 transitions. [2020-11-22 12:56:52,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-11-22 12:56:52,046 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 16 [2020-11-22 12:56:52,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:56:52,047 INFO L225 Difference]: With dead ends: 46 [2020-11-22 12:56:52,047 INFO L226 Difference]: Without dead ends: 45 [2020-11-22 12:56:52,048 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 24 SyntacticMatches, 8 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=179, Invalid=751, Unknown=0, NotChecked=0, Total=930 [2020-11-22 12:56:52,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-11-22 12:56:52,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-11-22 12:56:52,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-11-22 12:56:52,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 45 transitions. [2020-11-22 12:56:52,055 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 45 transitions. Word has length 16 [2020-11-22 12:56:52,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:56:52,055 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 45 transitions. [2020-11-22 12:56:52,055 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-11-22 12:56:52,055 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 45 transitions. [2020-11-22 12:56:52,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-11-22 12:56:52,057 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:56:52,057 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 1, 1, 1] [2020-11-22 12:56:52,272 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2020-11-22 12:56:52,273 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-22 12:56:52,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:56:52,273 INFO L82 PathProgramCache]: Analyzing trace with hash -37049674, now seen corresponding path program 2 times [2020-11-22 12:56:52,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:56:52,274 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229322824] [2020-11-22 12:56:52,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:56:52,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:56:52,452 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-11-22 12:56:52,453 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229322824] [2020-11-22 12:56:52,453 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [772694028] [2020-11-22 12:56:52,454 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_995b453a-e3fb-49c2-9385-4cc519a02b5c/bin/utaipan/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 [2020-11-22 12:56:52,533 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2020-11-22 12:56:52,533 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-22 12:56:52,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 14 conjunts are in the unsatisfiable core [2020-11-22 12:56:52,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:56:52,786 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:56:52,786 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:56:53,150 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:56:53,151 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2024579128] [2020-11-22 12:56:53,155 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2020-11-22 12:56:53,156 INFO L166 IcfgInterpreter]: Building call graph [2020-11-22 12:56:53,156 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-22 12:56:53,156 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-22 12:56:53,156 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-22 12:56:53,443 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-22 12:56:54,728 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-22 12:56:54,729 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-11-22 12:56:54,729 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 13, 13] total 28 [2020-11-22 12:56:54,729 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294403427] [2020-11-22 12:56:54,729 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-11-22 12:56:54,730 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:56:54,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-11-22 12:56:54,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=921, Unknown=0, NotChecked=0, Total=1122 [2020-11-22 12:56:54,731 INFO L87 Difference]: Start difference. First operand 45 states and 45 transitions. Second operand 29 states. [2020-11-22 12:56:54,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:56:54,882 INFO L93 Difference]: Finished difference Result 45 states and 45 transitions. [2020-11-22 12:56:54,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-22 12:56:54,883 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 44 [2020-11-22 12:56:54,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:56:54,883 INFO L225 Difference]: With dead ends: 45 [2020-11-22 12:56:54,883 INFO L226 Difference]: Without dead ends: 0 [2020-11-22 12:56:54,885 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 92 SyntacticMatches, 25 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1135 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=279, Invalid=1127, Unknown=0, NotChecked=0, Total=1406 [2020-11-22 12:56:54,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-22 12:56:54,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-22 12:56:54,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-22 12:56:54,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-22 12:56:54,885 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 44 [2020-11-22 12:56:54,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:56:54,885 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-22 12:56:54,885 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-11-22 12:56:54,886 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-22 12:56:54,886 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-22 12:56:55,092 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 12:56:55,094 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-22 12:56:55,305 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 51 [2020-11-22 12:56:55,306 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 24) no Hoare annotation was computed. [2020-11-22 12:56:55,306 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-22 12:56:55,306 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2020-11-22 12:56:55,307 INFO L270 CegarLoopResult]: At program point L29(lines 19 30) the Hoare annotation is: (<= ULTIMATE.start_main_~n~0 2147483647) [2020-11-22 12:56:55,307 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 26) no Hoare annotation was computed. [2020-11-22 12:56:55,307 INFO L274 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-11-22 12:56:55,307 INFO L274 CegarLoopResult]: For program point L25-1(line 25) no Hoare annotation was computed. [2020-11-22 12:56:55,307 INFO L274 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed. [2020-11-22 12:56:55,307 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 24) no Hoare annotation was computed. [2020-11-22 12:56:55,307 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2020-11-22 12:56:55,307 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-22 12:56:55,307 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 26) no Hoare annotation was computed. [2020-11-22 12:56:55,307 INFO L274 CegarLoopResult]: For program point L26(line 26) no Hoare annotation was computed. [2020-11-22 12:56:55,307 INFO L274 CegarLoopResult]: For program point L26-1(line 26) no Hoare annotation was computed. [2020-11-22 12:56:55,307 INFO L274 CegarLoopResult]: For program point L24-1(line 24) no Hoare annotation was computed. [2020-11-22 12:56:55,307 INFO L274 CegarLoopResult]: For program point L24-2(lines 24 27) no Hoare annotation was computed. [2020-11-22 12:56:55,308 INFO L270 CegarLoopResult]: At program point L24-4(lines 24 27) the Hoare annotation is: (let ((.cse0 (select |#memory_int| |#t~string0.base|))) (and (= |#t~string1.offset| 0) (= (select |#length| |#t~string1.base|) 26) (<= 0 ULTIMATE.start_main_~j~0) (= |#NULL.base| 0) (= (select .cse0 |#t~string0.offset|) 48) (<= ULTIMATE.start_main_~n~0 (+ ULTIMATE.start_main_~k~0 ULTIMATE.start_main_~j~0)) (<= ULTIMATE.start_main_~n~0 2147483647) (= (select .cse0 (+ |#t~string0.offset| 1)) 0) (= (select |#valid| 0) 0) (= 2 (select |#length| |#t~string0.base|)) (<= 1 ULTIMATE.start_main_~n~0) (< |#StackHeapBarrier| |#t~string0.base|) (= (select |#valid| |#t~string0.base|) 1) (< 0 |#StackHeapBarrier|) (< |#StackHeapBarrier| |#t~string1.base|) (= |#NULL.offset| 0) (<= ULTIMATE.start_main_~k~0 2147483647) (<= 0 ULTIMATE.start_main_~k~0) (= (select |#valid| |#t~string1.base|) 1) (<= ULTIMATE.start_main_~j~0 2147483647) (= |#t~string0.offset| 0))) [2020-11-22 12:56:55,308 INFO L274 CegarLoopResult]: For program point L24-5(lines 24 27) no Hoare annotation was computed. [2020-11-22 12:56:55,318 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-22 12:56:55,319 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-22 12:56:55,320 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-22 12:56:55,320 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-22 12:56:55,320 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-22 12:56:55,320 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-22 12:56:55,321 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-22 12:56:55,321 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-22 12:56:55,321 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-22 12:56:55,323 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-22 12:56:55,324 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-22 12:56:55,324 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-22 12:56:55,327 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-22 12:56:55,327 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-22 12:56:55,327 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-22 12:56:55,327 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-22 12:56:55,327 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-22 12:56:55,327 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-22 12:56:55,330 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 12:56:55 BoogieIcfgContainer [2020-11-22 12:56:55,330 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 12:56:55,331 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 12:56:55,331 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 12:56:55,331 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 12:56:55,331 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:56:46" (3/4) ... [2020-11-22 12:56:55,334 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-22 12:56:55,341 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2020-11-22 12:56:55,341 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-22 12:56:55,341 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-22 12:56:55,342 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-22 12:56:55,388 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_995b453a-e3fb-49c2-9385-4cc519a02b5c/bin/utaipan/witness.graphml [2020-11-22 12:56:55,388 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 12:56:55,390 INFO L168 Benchmark]: Toolchain (without parser) took 9427.49 ms. Allocated memory was 86.0 MB in the beginning and 182.5 MB in the end (delta: 96.5 MB). Free memory was 51.8 MB in the beginning and 140.0 MB in the end (delta: -88.2 MB). Peak memory consumption was 8.9 MB. Max. memory is 16.1 GB. [2020-11-22 12:56:55,390 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 86.0 MB. Free memory is still 67.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:56:55,390 INFO L168 Benchmark]: CACSL2BoogieTranslator took 282.41 ms. Allocated memory is still 86.0 MB. Free memory was 51.6 MB in the beginning and 63.6 MB in the end (delta: -11.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-22 12:56:55,391 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.50 ms. Allocated memory is still 86.0 MB. Free memory was 63.6 MB in the beginning and 62.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 12:56:55,391 INFO L168 Benchmark]: Boogie Preprocessor took 18.82 ms. Allocated memory is still 86.0 MB. Free memory was 62.2 MB in the beginning and 61.0 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:56:55,392 INFO L168 Benchmark]: RCFGBuilder took 429.20 ms. Allocated memory is still 86.0 MB. Free memory was 61.0 MB in the beginning and 44.8 MB in the end (delta: 16.2 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-11-22 12:56:55,392 INFO L168 Benchmark]: TraceAbstraction took 8603.13 ms. Allocated memory was 86.0 MB in the beginning and 182.5 MB in the end (delta: 96.5 MB). Free memory was 44.5 MB in the beginning and 143.2 MB in the end (delta: -98.6 MB). Peak memory consumption was 85.4 MB. Max. memory is 16.1 GB. [2020-11-22 12:56:55,393 INFO L168 Benchmark]: Witness Printer took 57.98 ms. Allocated memory is still 182.5 MB. Free memory was 143.2 MB in the beginning and 140.0 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-22 12:56:55,395 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 86.0 MB. Free memory is still 67.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 282.41 ms. Allocated memory is still 86.0 MB. Free memory was 51.6 MB in the beginning and 63.6 MB in the end (delta: -11.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 29.50 ms. Allocated memory is still 86.0 MB. Free memory was 63.6 MB in the beginning and 62.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 18.82 ms. Allocated memory is still 86.0 MB. Free memory was 62.2 MB in the beginning and 61.0 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 429.20 ms. Allocated memory is still 86.0 MB. Free memory was 61.0 MB in the beginning and 44.8 MB in the end (delta: 16.2 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 8603.13 ms. Allocated memory was 86.0 MB in the beginning and 182.5 MB in the end (delta: 96.5 MB). Free memory was 44.5 MB in the beginning and 143.2 MB in the end (delta: -98.6 MB). Peak memory consumption was 85.4 MB. Max. memory is 16.1 GB. * Witness Printer took 57.98 ms. Allocated memory is still 182.5 MB. Free memory was 143.2 MB in the beginning and 140.0 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.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 * 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: 26]: 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: 24]: 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: 24]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: n <= 2147483647 - InvariantResult [Line: 24]: Loop Invariant [2020-11-22 12:56:55,406 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-22 12:56:55,407 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-22 12:56:55,407 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-22 12:56:55,407 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-22 12:56:55,408 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-22 12:56:55,408 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-22 12:56:55,408 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-22 12:56:55,408 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-22 12:56:55,408 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-22 12:56:55,410 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-22 12:56:55,410 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-22 12:56:55,410 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-22 12:56:55,410 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-22 12:56:55,411 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-22 12:56:55,411 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-22 12:56:55,411 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-22 12:56:55,411 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-22 12:56:55,411 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL Derived loop invariant: ((((((((((((((((((("benchmark04_conjunctive.c" == 0 && unknown-#length-unknown["benchmark04_conjunctive.c"] == 26) && 0 <= j) && #NULL == 0) && unknown-#memory_int-unknown["0"]["0"] == 48) && n <= k + j) && n <= 2147483647) && unknown-#memory_int-unknown["0"]["0" + 1] == 0) && \valid[0] == 0) && 2 == unknown-#length-unknown["0"]) && 1 <= n) && unknown-#StackHeapBarrier-unknown < "0") && \valid["0"] == 1) && 0 < unknown-#StackHeapBarrier-unknown) && unknown-#StackHeapBarrier-unknown < "benchmark04_conjunctive.c") && #NULL == 0) && k <= 2147483647) && 0 <= k) && \valid["benchmark04_conjunctive.c"] == 1) && j <= 2147483647) && "0" == 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 18 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 8.2s, OverallIterations: 9, TraceHistogramMax: 6, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 59 SDtfs, 115 SDslu, 61 SDs, 0 SdLazy, 217 SolverSat, 37 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 277 GetRequests, 143 SyntacticMatches, 40 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1443 ImplicationChecksByTransitivity, 4.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45occurred in iteration=8, 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, 9 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 7 NumberOfFragments, 89 HoareAnnotationTreeSize, 2 FomulaSimplifications, 319 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 103 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 183 NumberOfCodeBlocks, 183 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 241 ConstructedInterpolants, 0 QuantifiedInterpolants, 32217 SizeOfPredicates, 20 NumberOfNonLiveVariables, 242 ConjunctsInSsa, 28 ConjunctsInUnsatCore, 15 InterpolantComputations, 6 PerfectInterpolantSequences, 85/348 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]: 573, ICFG_INTERPRETER_ENTERED_PROCEDURES: 1, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 8, DAG_INTERPRETER_EARLY_EXITS: 0, TOOLS_POST_APPLICATIONS: 44, TOOLS_POST_TIME[ms]: 197, 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: 44, TOOLS_QUANTIFIERELIM_TIME[ms]: 176, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 135, FLUID_QUERY_TIME[ms]: 6, FLUID_QUERIES: 66, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 0, DOMAIN_JOIN_TIME[ms]: 0, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME[ms]: 0, DOMAIN_WIDEN_APPLICATIONS: 4, DOMAIN_WIDEN_TIME[ms]: 292, DOMAIN_ISSUBSETEQ_APPLICATIONS: 5, DOMAIN_ISSUBSETEQ_TIME[ms]: 24, DOMAIN_ISBOTTOM_APPLICATIONS: 8, DOMAIN_ISBOTTOM_TIME[ms]: 14, LOOP_SUMMARIZER_APPLICATIONS: 1, LOOP_SUMMARIZER_CACHE_MISSES: 1, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 382, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 382, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 5, 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]: 2, REGEX_TO_DAG_TIME[ms]: 2, DAG_COMPRESSION_TIME[ms]: 8, DAG_COMPRESSION_PROCESSED_NODES: 74, DAG_COMPRESSION_RETAINED_NODES: 32, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...