./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_eefe6194-5fd9-4d2b-bb2f-914913448215/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_eefe6194-5fd9-4d2b-bb2f-914913448215/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_eefe6194-5fd9-4d2b-bb2f-914913448215/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_eefe6194-5fd9-4d2b-bb2f-914913448215/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-zilu/benchmark04_conjunctive.i -s /tmp/vcloud-vcloud-master/worker/run_dir_eefe6194-5fd9-4d2b-bb2f-914913448215/bin/utaipan/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_eefe6194-5fd9-4d2b-bb2f-914913448215/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 [2020-11-30 02:00:34,350 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 02:00:34,375 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 02:00:34,432 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 02:00:34,432 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 02:00:34,437 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 02:00:34,440 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 02:00:34,444 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 02:00:34,447 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 02:00:34,455 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 02:00:34,456 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 02:00:34,458 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 02:00:34,458 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 02:00:34,463 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 02:00:34,465 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 02:00:34,468 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 02:00:34,470 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 02:00:34,474 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 02:00:34,478 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 02:00:34,488 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 02:00:34,490 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 02:00:34,491 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 02:00:34,494 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 02:00:34,495 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 02:00:34,505 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 02:00:34,506 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 02:00:34,506 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 02:00:34,509 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 02:00:34,510 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 02:00:34,512 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 02:00:34,512 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 02:00:34,514 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 02:00:34,516 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 02:00:34,519 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 02:00:34,520 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 02:00:34,520 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 02:00:34,521 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 02:00:34,522 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 02:00:34,522 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 02:00:34,523 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 02:00:34,523 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 02:00:34,526 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_eefe6194-5fd9-4d2b-bb2f-914913448215/bin/utaipan/config/svcomp-Overflow-32bit-Taipan_Default.epf [2020-11-30 02:00:34,560 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 02:00:34,561 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 02:00:34,562 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-30 02:00:34,562 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-30 02:00:34,562 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-30 02:00:34,563 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-30 02:00:34,563 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-30 02:00:34,563 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-30 02:00:34,563 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-30 02:00:34,564 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-30 02:00:34,564 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-30 02:00:34,564 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-30 02:00:34,564 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-30 02:00:34,565 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-30 02:00:34,565 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-30 02:00:34,566 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 02:00:34,566 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 02:00:34,566 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-30 02:00:34,566 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 02:00:34,567 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 02:00:34,567 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 02:00:34,567 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 02:00:34,567 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 02:00:34,568 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 02:00:34,568 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-11-30 02:00:34,568 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 02:00:34,568 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 02:00:34,569 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 02:00:34,569 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 02:00:34,569 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 02:00:34,570 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 02:00:34,570 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 02:00:34,570 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 02:00:34,570 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 02:00:34,571 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 02:00:34,571 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 02:00:34,571 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-30 02:00:34,571 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 02:00:34,572 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 02:00:34,572 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 02:00:34,572 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 02:00:34,572 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_eefe6194-5fd9-4d2b-bb2f-914913448215/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_eefe6194-5fd9-4d2b-bb2f-914913448215/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6e3d50e5c95506905bfc503f1fcedc0356db6a24 [2020-11-30 02:00:34,842 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 02:00:34,879 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 02:00:34,883 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 02:00:34,885 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 02:00:34,885 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 02:00:34,886 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_eefe6194-5fd9-4d2b-bb2f-914913448215/bin/utaipan/../../sv-benchmarks/c/loop-zilu/benchmark04_conjunctive.i [2020-11-30 02:00:34,959 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_eefe6194-5fd9-4d2b-bb2f-914913448215/bin/utaipan/data/704d067d7/edce740f68b1470a830dbabd99a95343/FLAGe1e0f59d8 [2020-11-30 02:00:35,449 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 02:00:35,450 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_eefe6194-5fd9-4d2b-bb2f-914913448215/sv-benchmarks/c/loop-zilu/benchmark04_conjunctive.i [2020-11-30 02:00:35,465 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_eefe6194-5fd9-4d2b-bb2f-914913448215/bin/utaipan/data/704d067d7/edce740f68b1470a830dbabd99a95343/FLAGe1e0f59d8 [2020-11-30 02:00:35,812 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_eefe6194-5fd9-4d2b-bb2f-914913448215/bin/utaipan/data/704d067d7/edce740f68b1470a830dbabd99a95343 [2020-11-30 02:00:35,814 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 02:00:35,815 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 02:00:35,819 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 02:00:35,820 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 02:00:35,823 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 02:00:35,825 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:00:35" (1/1) ... [2020-11-30 02:00:35,827 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78f14abf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:00:35, skipping insertion in model container [2020-11-30 02:00:35,828 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:00:35" (1/1) ... [2020-11-30 02:00:35,835 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 02:00:35,849 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 02:00:36,043 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:00:36,059 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 02:00:36,076 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:00:36,092 INFO L208 MainTranslator]: Completed translation [2020-11-30 02:00:36,092 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:00:36 WrapperNode [2020-11-30 02:00:36,093 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 02:00:36,094 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 02:00:36,094 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 02:00:36,095 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 02:00:36,107 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:00:36" (1/1) ... [2020-11-30 02:00:36,119 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:00:36" (1/1) ... [2020-11-30 02:00:36,147 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 02:00:36,148 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 02:00:36,149 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 02:00:36,150 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 02:00:36,160 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:00:36" (1/1) ... [2020-11-30 02:00:36,160 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:00:36" (1/1) ... [2020-11-30 02:00:36,176 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:00:36" (1/1) ... [2020-11-30 02:00:36,176 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:00:36" (1/1) ... [2020-11-30 02:00:36,179 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:00:36" (1/1) ... [2020-11-30 02:00:36,190 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:00:36" (1/1) ... [2020-11-30 02:00:36,192 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:00:36" (1/1) ... [2020-11-30 02:00:36,195 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 02:00:36,199 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 02:00:36,199 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 02:00:36,199 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 02:00:36,200 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:00:36" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_eefe6194-5fd9-4d2b-bb2f-914913448215/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 [2020-11-30 02:00:36,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 02:00:36,265 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 02:00:36,266 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 02:00:36,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 02:00:36,644 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 02:00:36,644 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-30 02:00:36,646 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:00:36 BoogieIcfgContainer [2020-11-30 02:00:36,646 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 02:00:36,648 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 02:00:36,648 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 02:00:36,652 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 02:00:36,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 02:00:35" (1/3) ... [2020-11-30 02:00:36,653 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a46260 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:00:36, skipping insertion in model container [2020-11-30 02:00:36,653 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:00:36" (2/3) ... [2020-11-30 02:00:36,654 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a46260 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:00:36, skipping insertion in model container [2020-11-30 02:00:36,654 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:00:36" (3/3) ... [2020-11-30 02:00:36,655 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark04_conjunctive.i [2020-11-30 02:00:36,678 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 02:00:36,701 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-11-30 02:00:36,716 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-11-30 02:00:36,752 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 02:00:36,753 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 02:00:36,753 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 02:00:36,753 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 02:00:36,753 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 02:00:36,753 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 02:00:36,754 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 02:00:36,754 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 02:00:36,768 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2020-11-30 02:00:36,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-11-30 02:00:36,773 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:00:36,774 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-11-30 02:00:36,775 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]=== [2020-11-30 02:00:36,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:00:36,781 INFO L82 PathProgramCache]: Analyzing trace with hash 77109, now seen corresponding path program 1 times [2020-11-30 02:00:36,792 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:00:36,792 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192359948] [2020-11-30 02:00:36,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:00:36,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:00:36,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:00:36,945 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192359948] [2020-11-30 02:00:36,946 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:00:36,946 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-30 02:00:36,947 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122060941] [2020-11-30 02:00:36,952 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:00:36,952 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:00:36,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:00:36,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:00:36,968 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 3 states. [2020-11-30 02:00:37,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:00:37,009 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2020-11-30 02:00:37,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:00:37,010 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-11-30 02:00:37,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:00:37,018 INFO L225 Difference]: With dead ends: 21 [2020-11-30 02:00:37,018 INFO L226 Difference]: Without dead ends: 14 [2020-11-30 02:00:37,021 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 [2020-11-30 02:00:37,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-11-30 02:00:37,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-11-30 02:00:37,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-11-30 02:00:37,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2020-11-30 02:00:37,063 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 3 [2020-11-30 02:00:37,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:00:37,063 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2020-11-30 02:00:37,064 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:00:37,064 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2020-11-30 02:00:37,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-30 02:00:37,065 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:00:37,065 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-30 02:00:37,065 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 02:00:37,067 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]=== [2020-11-30 02:00:37,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:00:37,071 INFO L82 PathProgramCache]: Analyzing trace with hash 2390424, now seen corresponding path program 1 times [2020-11-30 02:00:37,072 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:00:37,072 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488740699] [2020-11-30 02:00:37,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:00:37,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:00:37,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:00:37,121 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488740699] [2020-11-30 02:00:37,122 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:00:37,122 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 02:00:37,122 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700493352] [2020-11-30 02:00:37,123 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:00:37,123 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:00:37,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:00:37,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:00:37,125 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 3 states. [2020-11-30 02:00:37,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:00:37,145 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2020-11-30 02:00:37,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:00:37,147 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-11-30 02:00:37,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:00:37,147 INFO L225 Difference]: With dead ends: 14 [2020-11-30 02:00:37,147 INFO L226 Difference]: Without dead ends: 13 [2020-11-30 02:00:37,148 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 [2020-11-30 02:00:37,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-11-30 02:00:37,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-11-30 02:00:37,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-11-30 02:00:37,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2020-11-30 02:00:37,151 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 4 [2020-11-30 02:00:37,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:00:37,151 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2020-11-30 02:00:37,152 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:00:37,152 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2020-11-30 02:00:37,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-30 02:00:37,152 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:00:37,152 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-30 02:00:37,152 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 02:00:37,153 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]=== [2020-11-30 02:00:37,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:00:37,153 INFO L82 PathProgramCache]: Analyzing trace with hash -1997768230, now seen corresponding path program 1 times [2020-11-30 02:00:37,154 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:00:37,157 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895595896] [2020-11-30 02:00:37,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:00:37,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:00:37,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:00:37,217 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895595896] [2020-11-30 02:00:37,218 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:00:37,218 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 02:00:37,218 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944594504] [2020-11-30 02:00:37,218 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 02:00:37,219 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:00:37,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 02:00:37,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 02:00:37,220 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 4 states. [2020-11-30 02:00:37,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:00:37,270 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2020-11-30 02:00:37,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 02:00:37,271 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-11-30 02:00:37,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:00:37,272 INFO L225 Difference]: With dead ends: 20 [2020-11-30 02:00:37,272 INFO L226 Difference]: Without dead ends: 19 [2020-11-30 02:00:37,273 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 [2020-11-30 02:00:37,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-11-30 02:00:37,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 17. [2020-11-30 02:00:37,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-11-30 02:00:37,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2020-11-30 02:00:37,292 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 6 [2020-11-30 02:00:37,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:00:37,293 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2020-11-30 02:00:37,293 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 02:00:37,293 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2020-11-30 02:00:37,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-30 02:00:37,293 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:00:37,294 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:00:37,294 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-30 02:00:37,294 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]=== [2020-11-30 02:00:37,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:00:37,295 INFO L82 PathProgramCache]: Analyzing trace with hash -1801272932, now seen corresponding path program 1 times [2020-11-30 02:00:37,295 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:00:37,296 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167120493] [2020-11-30 02:00:37,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:00:37,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:00:37,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:00:37,340 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167120493] [2020-11-30 02:00:37,340 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:00:37,340 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 02:00:37,340 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183295579] [2020-11-30 02:00:37,340 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 02:00:37,341 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:00:37,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 02:00:37,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 02:00:37,341 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 4 states. [2020-11-30 02:00:37,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:00:37,382 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2020-11-30 02:00:37,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 02:00:37,383 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-11-30 02:00:37,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:00:37,384 INFO L225 Difference]: With dead ends: 17 [2020-11-30 02:00:37,384 INFO L226 Difference]: Without dead ends: 16 [2020-11-30 02:00:37,384 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 [2020-11-30 02:00:37,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-11-30 02:00:37,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-11-30 02:00:37,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-11-30 02:00:37,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2020-11-30 02:00:37,388 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 7 [2020-11-30 02:00:37,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:00:37,389 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2020-11-30 02:00:37,389 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 02:00:37,389 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2020-11-30 02:00:37,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-30 02:00:37,389 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:00:37,389 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:00:37,390 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-30 02:00:37,390 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]=== [2020-11-30 02:00:37,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:00:37,391 INFO L82 PathProgramCache]: Analyzing trace with hash -4885988, now seen corresponding path program 1 times [2020-11-30 02:00:37,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:00:37,391 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900251600] [2020-11-30 02:00:37,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:00:37,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:00:37,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:00:37,459 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900251600] [2020-11-30 02:00:37,459 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:00:37,459 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 02:00:37,459 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508143735] [2020-11-30 02:00:37,460 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 02:00:37,460 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:00:37,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 02:00:37,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 02:00:37,461 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 4 states. [2020-11-30 02:00:37,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:00:37,491 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2020-11-30 02:00:37,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 02:00:37,491 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-11-30 02:00:37,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:00:37,492 INFO L225 Difference]: With dead ends: 16 [2020-11-30 02:00:37,492 INFO L226 Difference]: Without dead ends: 15 [2020-11-30 02:00:37,493 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 [2020-11-30 02:00:37,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-11-30 02:00:37,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-11-30 02:00:37,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-11-30 02:00:37,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2020-11-30 02:00:37,496 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 8 [2020-11-30 02:00:37,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:00:37,497 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2020-11-30 02:00:37,497 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 02:00:37,497 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2020-11-30 02:00:37,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-30 02:00:37,498 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:00:37,498 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:00:37,498 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-30 02:00:37,499 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]=== [2020-11-30 02:00:37,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:00:37,499 INFO L82 PathProgramCache]: Analyzing trace with hash -151465570, now seen corresponding path program 1 times [2020-11-30 02:00:37,499 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:00:37,500 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306157868] [2020-11-30 02:00:37,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:00:37,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:00:37,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:00:37,541 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306157868] [2020-11-30 02:00:37,541 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:00:37,542 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 02:00:37,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256366255] [2020-11-30 02:00:37,542 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 02:00:37,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:00:37,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 02:00:37,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 02:00:37,543 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 4 states. [2020-11-30 02:00:37,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:00:37,573 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2020-11-30 02:00:37,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 02:00:37,574 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-11-30 02:00:37,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:00:37,574 INFO L225 Difference]: With dead ends: 19 [2020-11-30 02:00:37,574 INFO L226 Difference]: Without dead ends: 18 [2020-11-30 02:00:37,575 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 [2020-11-30 02:00:37,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-11-30 02:00:37,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-11-30 02:00:37,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-11-30 02:00:37,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2020-11-30 02:00:37,578 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 9 [2020-11-30 02:00:37,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:00:37,579 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2020-11-30 02:00:37,579 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 02:00:37,579 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2020-11-30 02:00:37,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-30 02:00:37,579 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:00:37,579 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:00:37,580 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-30 02:00:37,580 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]=== [2020-11-30 02:00:37,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:00:37,580 INFO L82 PathProgramCache]: Analyzing trace with hash 1156517314, now seen corresponding path program 1 times [2020-11-30 02:00:37,581 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:00:37,581 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113975809] [2020-11-30 02:00:37,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:00:37,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:00:37,653 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:00:37,654 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113975809] [2020-11-30 02:00:37,654 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1905294255] [2020-11-30 02:00:37,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_eefe6194-5fd9-4d2b-bb2f-914913448215/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 [2020-11-30 02:00:37,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:00:37,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-30 02:00:37,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:00:37,750 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:00:37,751 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:00:37,827 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:00:37,828 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [46119324] [2020-11-30 02:00:37,848 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2020-11-30 02:00:37,849 INFO L166 IcfgInterpreter]: Building call graph [2020-11-30 02:00:37,853 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-30 02:00:37,859 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-30 02:00:37,860 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-30 02:00:38,432 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-30 02:00:38,602 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 53 [2020-11-30 02:00:39,037 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2020-11-30 02:00:39,037 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5, 5] total 13 [2020-11-30 02:00:39,038 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753049713] [2020-11-30 02:00:39,039 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 02:00:39,039 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:00:39,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 02:00:39,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2020-11-30 02:00:39,040 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 6 states. [2020-11-30 02:00:39,198 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 51 [2020-11-30 02:00:39,394 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 53 [2020-11-30 02:00:39,544 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 52 [2020-11-30 02:00:39,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:00:39,560 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2020-11-30 02:00:39,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 02:00:39,562 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-11-30 02:00:39,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:00:39,563 INFO L225 Difference]: With dead ends: 18 [2020-11-30 02:00:39,563 INFO L226 Difference]: Without dead ends: 17 [2020-11-30 02:00:39,564 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 [2020-11-30 02:00:39,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-11-30 02:00:39,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-11-30 02:00:39,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-11-30 02:00:39,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2020-11-30 02:00:39,566 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 13 [2020-11-30 02:00:39,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:00:39,566 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2020-11-30 02:00:39,566 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 02:00:39,567 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2020-11-30 02:00:39,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-30 02:00:39,567 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:00:39,567 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2020-11-30 02:00:39,778 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-11-30 02:00:39,778 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]=== [2020-11-30 02:00:39,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:00:39,779 INFO L82 PathProgramCache]: Analyzing trace with hash -420293450, now seen corresponding path program 1 times [2020-11-30 02:00:39,779 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:00:39,779 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586124583] [2020-11-30 02:00:39,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:00:39,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:00:39,843 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:00:39,844 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586124583] [2020-11-30 02:00:39,844 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1546301647] [2020-11-30 02:00:39,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_eefe6194-5fd9-4d2b-bb2f-914913448215/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 [2020-11-30 02:00:39,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:00:39,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-30 02:00:39,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:00:40,001 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:00:40,001 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:00:40,171 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:00:40,172 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [432533711] [2020-11-30 02:00:40,174 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2020-11-30 02:00:40,174 INFO L166 IcfgInterpreter]: Building call graph [2020-11-30 02:00:40,175 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-30 02:00:40,175 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-30 02:00:40,175 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-30 02:00:40,508 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-30 02:00:40,656 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 28 [2020-11-30 02:00:40,818 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 53 [2020-11-30 02:00:41,497 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 02:00:41,497 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-11-30 02:00:41,498 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 15 [2020-11-30 02:00:41,498 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073602290] [2020-11-30 02:00:41,498 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-11-30 02:00:41,499 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:00:41,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-11-30 02:00:41,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2020-11-30 02:00:41,500 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 16 states. [2020-11-30 02:00:41,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:00:41,914 INFO L93 Difference]: Finished difference Result 46 states and 49 transitions. [2020-11-30 02:00:41,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-11-30 02:00:41,915 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 16 [2020-11-30 02:00:41,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:00:41,916 INFO L225 Difference]: With dead ends: 46 [2020-11-30 02:00:41,916 INFO L226 Difference]: Without dead ends: 45 [2020-11-30 02:00:41,916 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 24 SyntacticMatches, 8 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=179, Invalid=751, Unknown=0, NotChecked=0, Total=930 [2020-11-30 02:00:41,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-11-30 02:00:41,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-11-30 02:00:41,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-11-30 02:00:41,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 45 transitions. [2020-11-30 02:00:41,924 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 45 transitions. Word has length 16 [2020-11-30 02:00:41,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:00:41,924 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 45 transitions. [2020-11-30 02:00:41,925 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-11-30 02:00:41,925 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 45 transitions. [2020-11-30 02:00:41,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-11-30 02:00:41,926 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:00:41,926 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 1, 1, 1] [2020-11-30 02:00:42,154 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2020-11-30 02:00:42,154 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]=== [2020-11-30 02:00:42,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:00:42,155 INFO L82 PathProgramCache]: Analyzing trace with hash -37049674, now seen corresponding path program 2 times [2020-11-30 02:00:42,155 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:00:42,155 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513132846] [2020-11-30 02:00:42,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:00:42,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:00:42,335 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-11-30 02:00:42,341 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513132846] [2020-11-30 02:00:42,341 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [740747307] [2020-11-30 02:00:42,341 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_eefe6194-5fd9-4d2b-bb2f-914913448215/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 [2020-11-30 02:00:42,400 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2020-11-30 02:00:42,400 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 02:00:42,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 14 conjunts are in the unsatisfiable core [2020-11-30 02:00:42,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:00:42,589 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:00:42,590 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:00:42,950 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:00:42,951 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2109925188] [2020-11-30 02:00:42,953 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2020-11-30 02:00:42,953 INFO L166 IcfgInterpreter]: Building call graph [2020-11-30 02:00:42,954 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-30 02:00:42,954 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-30 02:00:42,954 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-30 02:00:43,207 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-30 02:00:43,350 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 28 [2020-11-30 02:00:43,530 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 53 [2020-11-30 02:00:43,836 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 29 [2020-11-30 02:00:44,758 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 02:00:44,758 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-11-30 02:00:44,758 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 13, 13] total 28 [2020-11-30 02:00:44,758 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734407563] [2020-11-30 02:00:44,759 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-11-30 02:00:44,759 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:00:44,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-11-30 02:00:44,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=921, Unknown=0, NotChecked=0, Total=1122 [2020-11-30 02:00:44,760 INFO L87 Difference]: Start difference. First operand 45 states and 45 transitions. Second operand 29 states. [2020-11-30 02:00:44,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:00:44,897 INFO L93 Difference]: Finished difference Result 45 states and 45 transitions. [2020-11-30 02:00:44,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 02:00:44,898 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 44 [2020-11-30 02:00:44,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:00:44,898 INFO L225 Difference]: With dead ends: 45 [2020-11-30 02:00:44,898 INFO L226 Difference]: Without dead ends: 0 [2020-11-30 02:00:44,899 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 92 SyntacticMatches, 25 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1135 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=279, Invalid=1127, Unknown=0, NotChecked=0, Total=1406 [2020-11-30 02:00:44,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-30 02:00:44,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-30 02:00:44,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-30 02:00:44,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-30 02:00:44,900 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 44 [2020-11-30 02:00:44,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:00:44,900 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 02:00:44,900 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-11-30 02:00:44,900 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-30 02:00:44,900 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-30 02:00:45,100 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 02:00:45,103 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-30 02:00:45,337 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 51 [2020-11-30 02:00:45,339 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 24) no Hoare annotation was computed. [2020-11-30 02:00:45,339 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-30 02:00:45,339 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2020-11-30 02:00:45,340 INFO L270 CegarLoopResult]: At program point L29(lines 19 30) the Hoare annotation is: (<= ULTIMATE.start_main_~n~0 2147483647) [2020-11-30 02:00:45,340 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 26) no Hoare annotation was computed. [2020-11-30 02:00:45,340 INFO L274 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-11-30 02:00:45,340 INFO L274 CegarLoopResult]: For program point L25-1(line 25) no Hoare annotation was computed. [2020-11-30 02:00:45,340 INFO L274 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed. [2020-11-30 02:00:45,340 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 24) no Hoare annotation was computed. [2020-11-30 02:00:45,340 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2020-11-30 02:00:45,340 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-30 02:00:45,340 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 26) no Hoare annotation was computed. [2020-11-30 02:00:45,340 INFO L274 CegarLoopResult]: For program point L26(line 26) no Hoare annotation was computed. [2020-11-30 02:00:45,340 INFO L274 CegarLoopResult]: For program point L26-1(line 26) no Hoare annotation was computed. [2020-11-30 02:00:45,340 INFO L274 CegarLoopResult]: For program point L24-1(line 24) no Hoare annotation was computed. [2020-11-30 02:00:45,340 INFO L274 CegarLoopResult]: For program point L24-2(lines 24 27) no Hoare annotation was computed. [2020-11-30 02:00:45,341 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))) [2020-11-30 02:00:45,341 INFO L274 CegarLoopResult]: For program point L24-5(lines 24 27) no Hoare annotation was computed. [2020-11-30 02:00:45,354 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-30 02:00:45,355 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-30 02:00:45,355 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-30 02:00:45,355 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-30 02:00:45,356 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-30 02:00:45,356 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-30 02:00:45,356 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-30 02:00:45,356 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-30 02:00:45,356 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-30 02:00:45,358 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-30 02:00:45,359 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-30 02:00:45,359 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-30 02:00:45,359 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-30 02:00:45,359 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-30 02:00:45,359 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-30 02:00:45,360 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-30 02:00:45,360 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-30 02:00:45,360 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-30 02:00:45,362 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 02:00:45 BoogieIcfgContainer [2020-11-30 02:00:45,363 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 02:00:45,363 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 02:00:45,363 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 02:00:45,363 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 02:00:45,364 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:00:36" (3/4) ... [2020-11-30 02:00:45,367 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-30 02:00:45,376 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2020-11-30 02:00:45,376 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-30 02:00:45,376 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 02:00:45,376 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 02:00:45,419 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_eefe6194-5fd9-4d2b-bb2f-914913448215/bin/utaipan/witness.graphml [2020-11-30 02:00:45,419 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 02:00:45,420 INFO L168 Benchmark]: Toolchain (without parser) took 9604.71 ms. Allocated memory was 79.7 MB in the beginning and 172.0 MB in the end (delta: 92.3 MB). Free memory was 50.1 MB in the beginning and 74.5 MB in the end (delta: -24.5 MB). Peak memory consumption was 67.2 MB. Max. memory is 16.1 GB. [2020-11-30 02:00:45,424 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 79.7 MB. Free memory is still 42.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:00:45,424 INFO L168 Benchmark]: CACSL2BoogieTranslator took 274.40 ms. Allocated memory is still 79.7 MB. Free memory was 49.9 MB in the beginning and 58.1 MB in the end (delta: -8.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 02:00:45,425 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.05 ms. Allocated memory is still 79.7 MB. Free memory was 58.1 MB in the beginning and 56.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 02:00:45,425 INFO L168 Benchmark]: Boogie Preprocessor took 47.29 ms. Allocated memory is still 79.7 MB. Free memory was 56.5 MB in the beginning and 55.7 MB in the end (delta: 857.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:00:45,426 INFO L168 Benchmark]: RCFGBuilder took 447.97 ms. Allocated memory is still 79.7 MB. Free memory was 55.4 MB in the beginning and 39.7 MB in the end (delta: 15.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-11-30 02:00:45,426 INFO L168 Benchmark]: TraceAbstraction took 8714.59 ms. Allocated memory was 79.7 MB in the beginning and 172.0 MB in the end (delta: 92.3 MB). Free memory was 39.2 MB in the beginning and 76.6 MB in the end (delta: -37.4 MB). Peak memory consumption was 55.7 MB. Max. memory is 16.1 GB. [2020-11-30 02:00:45,427 INFO L168 Benchmark]: Witness Printer took 56.20 ms. Allocated memory is still 172.0 MB. Free memory was 76.6 MB in the beginning and 74.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 02:00:45,429 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 79.7 MB. Free memory is still 42.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 274.40 ms. Allocated memory is still 79.7 MB. Free memory was 49.9 MB in the beginning and 58.1 MB in the end (delta: -8.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 53.05 ms. Allocated memory is still 79.7 MB. Free memory was 58.1 MB in the beginning and 56.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 47.29 ms. Allocated memory is still 79.7 MB. Free memory was 56.5 MB in the beginning and 55.7 MB in the end (delta: 857.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 447.97 ms. Allocated memory is still 79.7 MB. Free memory was 55.4 MB in the beginning and 39.7 MB in the end (delta: 15.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 8714.59 ms. Allocated memory was 79.7 MB in the beginning and 172.0 MB in the end (delta: 92.3 MB). Free memory was 39.2 MB in the beginning and 76.6 MB in the end (delta: -37.4 MB). Peak memory consumption was 55.7 MB. Max. memory is 16.1 GB. * Witness Printer took 56.20 ms. Allocated memory is still 172.0 MB. Free memory was 76.6 MB in the beginning and 74.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL * 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 [2020-11-30 02:00:45,444 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-30 02:00:45,450 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-30 02:00:45,450 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-30 02:00:45,450 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-30 02:00:45,451 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-30 02:00:45,451 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-30 02:00:45,451 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-30 02:00:45,451 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-30 02:00:45,451 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-30 02:00:45,454 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-30 02:00:45,455 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-30 02:00:45,457 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-30 02:00:45,458 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-30 02:00:45,458 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-30 02:00:45,458 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-30 02:00:45,458 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-30 02:00:45,458 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-30 02:00:45,458 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: 8.3s, 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, 4.8s 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, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.3s 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]: 584, 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]: 219, 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]: 193, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 146, FLUID_QUERY_TIME[ms]: 5, 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]: 282, DOMAIN_ISSUBSETEQ_APPLICATIONS: 5, DOMAIN_ISSUBSETEQ_TIME[ms]: 16, DOMAIN_ISBOTTOM_APPLICATIONS: 8, DOMAIN_ISBOTTOM_TIME[ms]: 16, LOOP_SUMMARIZER_APPLICATIONS: 1, LOOP_SUMMARIZER_CACHE_MISSES: 1, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 374, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 374, 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]: 3, REGEX_TO_DAG_TIME[ms]: 3, 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...