./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/loop-zilu/benchmark37_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_16a6e69e-eb76-4a76-91ab-a5777ce680a5/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_16a6e69e-eb76-4a76-91ab-a5777ce680a5/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_16a6e69e-eb76-4a76-91ab-a5777ce680a5/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_16a6e69e-eb76-4a76-91ab-a5777ce680a5/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-zilu/benchmark37_conjunctive.i -s /tmp/vcloud-vcloud-master/worker/run_dir_16a6e69e-eb76-4a76-91ab-a5777ce680a5/bin/utaipan/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_16a6e69e-eb76-4a76-91ab-a5777ce680a5/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 8a833a1b9e7471f6481f3d298fb7b827e4068305 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 01:52:23,357 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 01:52:23,359 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 01:52:23,417 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 01:52:23,418 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 01:52:23,423 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 01:52:23,425 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 01:52:23,432 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 01:52:23,435 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 01:52:23,443 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 01:52:23,443 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 01:52:23,444 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 01:52:23,445 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 01:52:23,446 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 01:52:23,447 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 01:52:23,449 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 01:52:23,449 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 01:52:23,450 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 01:52:23,452 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 01:52:23,455 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 01:52:23,456 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 01:52:23,458 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 01:52:23,459 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 01:52:23,460 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 01:52:23,463 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 01:52:23,464 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 01:52:23,464 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 01:52:23,465 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 01:52:23,466 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 01:52:23,467 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 01:52:23,467 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 01:52:23,468 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 01:52:23,469 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 01:52:23,470 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 01:52:23,474 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 01:52:23,474 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 01:52:23,475 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 01:52:23,479 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 01:52:23,479 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 01:52:23,480 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 01:52:23,481 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 01:52:23,482 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_16a6e69e-eb76-4a76-91ab-a5777ce680a5/bin/utaipan/config/svcomp-Overflow-32bit-Taipan_Default.epf [2020-11-30 01:52:23,512 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 01:52:23,512 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 01:52:23,513 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-30 01:52:23,513 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-30 01:52:23,513 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-30 01:52:23,513 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-30 01:52:23,514 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-30 01:52:23,514 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-30 01:52:23,514 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-30 01:52:23,514 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-30 01:52:23,515 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-30 01:52:23,515 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-30 01:52:23,515 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-30 01:52:23,515 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-30 01:52:23,515 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-30 01:52:23,516 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 01:52:23,516 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 01:52:23,517 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-30 01:52:23,517 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 01:52:23,517 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 01:52:23,517 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 01:52:23,517 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 01:52:23,518 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 01:52:23,518 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 01:52:23,518 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-11-30 01:52:23,518 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 01:52:23,518 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 01:52:23,519 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 01:52:23,519 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 01:52:23,519 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 01:52:23,519 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 01:52:23,519 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 01:52:23,520 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 01:52:23,520 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 01:52:23,520 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 01:52:23,520 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 01:52:23,520 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-30 01:52:23,521 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 01:52:23,521 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 01:52:23,521 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 01:52:23,521 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 01:52:23,521 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_16a6e69e-eb76-4a76-91ab-a5777ce680a5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_16a6e69e-eb76-4a76-91ab-a5777ce680a5/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8a833a1b9e7471f6481f3d298fb7b827e4068305 [2020-11-30 01:52:23,752 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 01:52:23,778 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 01:52:23,781 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 01:52:23,782 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 01:52:23,785 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 01:52:23,786 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_16a6e69e-eb76-4a76-91ab-a5777ce680a5/bin/utaipan/../../sv-benchmarks/c/loop-zilu/benchmark37_conjunctive.i [2020-11-30 01:52:23,873 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_16a6e69e-eb76-4a76-91ab-a5777ce680a5/bin/utaipan/data/91347bcd7/ea2f329847bc447ea2f8ec9dffed0e47/FLAG023392883 [2020-11-30 01:52:24,294 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 01:52:24,295 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_16a6e69e-eb76-4a76-91ab-a5777ce680a5/sv-benchmarks/c/loop-zilu/benchmark37_conjunctive.i [2020-11-30 01:52:24,301 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_16a6e69e-eb76-4a76-91ab-a5777ce680a5/bin/utaipan/data/91347bcd7/ea2f329847bc447ea2f8ec9dffed0e47/FLAG023392883 [2020-11-30 01:52:24,317 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_16a6e69e-eb76-4a76-91ab-a5777ce680a5/bin/utaipan/data/91347bcd7/ea2f329847bc447ea2f8ec9dffed0e47 [2020-11-30 01:52:24,322 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 01:52:24,326 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 01:52:24,328 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 01:52:24,329 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 01:52:24,332 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 01:52:24,333 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:52:24" (1/1) ... [2020-11-30 01:52:24,336 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e67ea6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:52:24, skipping insertion in model container [2020-11-30 01:52:24,337 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:52:24" (1/1) ... [2020-11-30 01:52:24,345 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 01:52:24,361 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 01:52:24,528 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:52:24,537 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 01:52:24,551 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:52:24,565 INFO L208 MainTranslator]: Completed translation [2020-11-30 01:52:24,566 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:52:24 WrapperNode [2020-11-30 01:52:24,566 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 01:52:24,567 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 01:52:24,567 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 01:52:24,567 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 01:52:24,575 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:52:24" (1/1) ... [2020-11-30 01:52:24,581 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:52:24" (1/1) ... [2020-11-30 01:52:24,598 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 01:52:24,599 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 01:52:24,599 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 01:52:24,599 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 01:52:24,607 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:52:24" (1/1) ... [2020-11-30 01:52:24,608 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:52:24" (1/1) ... [2020-11-30 01:52:24,609 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:52:24" (1/1) ... [2020-11-30 01:52:24,609 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:52:24" (1/1) ... [2020-11-30 01:52:24,612 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:52:24" (1/1) ... [2020-11-30 01:52:24,616 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:52:24" (1/1) ... [2020-11-30 01:52:24,617 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:52:24" (1/1) ... [2020-11-30 01:52:24,619 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 01:52:24,620 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 01:52:24,620 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 01:52:24,620 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 01:52:24,621 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:52:24" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_16a6e69e-eb76-4a76-91ab-a5777ce680a5/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 01:52:24,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 01:52:24,712 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 01:52:24,712 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 01:52:24,712 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 01:52:25,177 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 01:52:25,178 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-30 01:52:25,180 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:52:25 BoogieIcfgContainer [2020-11-30 01:52:25,180 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 01:52:25,182 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 01:52:25,182 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 01:52:25,185 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 01:52:25,187 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 01:52:24" (1/3) ... [2020-11-30 01:52:25,189 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35fe3436 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:52:25, skipping insertion in model container [2020-11-30 01:52:25,189 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:52:24" (2/3) ... [2020-11-30 01:52:25,189 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35fe3436 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:52:25, skipping insertion in model container [2020-11-30 01:52:25,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:52:25" (3/3) ... [2020-11-30 01:52:25,191 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark37_conjunctive.i [2020-11-30 01:52:25,203 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 01:52:25,208 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-11-30 01:52:25,220 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-30 01:52:25,264 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 01:52:25,265 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 01:52:25,266 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 01:52:25,266 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 01:52:25,266 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 01:52:25,267 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 01:52:25,267 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 01:52:25,267 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 01:52:25,286 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2020-11-30 01:52:25,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-30 01:52:25,292 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:52:25,293 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-30 01:52:25,293 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 01:52:25,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:52:25,300 INFO L82 PathProgramCache]: Analyzing trace with hash 2271356, now seen corresponding path program 1 times [2020-11-30 01:52:25,310 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:52:25,311 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472474022] [2020-11-30 01:52:25,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:52:25,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:52:25,528 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 01:52:25,528 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472474022] [2020-11-30 01:52:25,529 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:52:25,529 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 01:52:25,530 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202697526] [2020-11-30 01:52:25,537 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 01:52:25,537 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:52:25,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 01:52:25,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 01:52:25,558 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 4 states. [2020-11-30 01:52:25,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:52:25,641 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2020-11-30 01:52:25,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 01:52:25,644 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2020-11-30 01:52:25,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:52:25,665 INFO L225 Difference]: With dead ends: 13 [2020-11-30 01:52:25,665 INFO L226 Difference]: Without dead ends: 10 [2020-11-30 01:52:25,668 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 01:52:25,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-11-30 01:52:25,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2020-11-30 01:52:25,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-11-30 01:52:25,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2020-11-30 01:52:25,711 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 4 [2020-11-30 01:52:25,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:52:25,711 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2020-11-30 01:52:25,711 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 01:52:25,712 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2020-11-30 01:52:25,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-30 01:52:25,712 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:52:25,712 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-30 01:52:25,713 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 01:52:25,713 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 01:52:25,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:52:25,714 INFO L82 PathProgramCache]: Analyzing trace with hash 70412086, now seen corresponding path program 1 times [2020-11-30 01:52:25,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:52:25,714 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778470136] [2020-11-30 01:52:25,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:52:25,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:52:25,756 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 01:52:25,756 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778470136] [2020-11-30 01:52:25,757 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:52:25,757 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 01:52:25,757 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187892442] [2020-11-30 01:52:25,758 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 01:52:25,759 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:52:25,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 01:52:25,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 01:52:25,760 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 3 states. [2020-11-30 01:52:25,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:52:25,776 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2020-11-30 01:52:25,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 01:52:25,777 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-11-30 01:52:25,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:52:25,778 INFO L225 Difference]: With dead ends: 10 [2020-11-30 01:52:25,778 INFO L226 Difference]: Without dead ends: 9 [2020-11-30 01:52:25,779 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 01:52:25,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2020-11-30 01:52:25,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2020-11-30 01:52:25,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-11-30 01:52:25,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2020-11-30 01:52:25,782 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2020-11-30 01:52:25,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:52:25,782 INFO L481 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2020-11-30 01:52:25,782 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 01:52:25,783 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2020-11-30 01:52:25,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-30 01:52:25,783 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:52:25,783 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-30 01:52:25,786 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 01:52:25,786 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 01:52:25,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:52:25,787 INFO L82 PathProgramCache]: Analyzing trace with hash -2112192578, now seen corresponding path program 1 times [2020-11-30 01:52:25,788 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:52:25,789 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971796348] [2020-11-30 01:52:25,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:52:25,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:52:25,855 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 01:52:25,855 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971796348] [2020-11-30 01:52:25,855 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:52:25,856 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 01:52:25,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511096486] [2020-11-30 01:52:25,856 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 01:52:25,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:52:25,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 01:52:25,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 01:52:25,858 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 4 states. [2020-11-30 01:52:25,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:52:25,900 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2020-11-30 01:52:25,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 01:52:25,901 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-11-30 01:52:25,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:52:25,901 INFO L225 Difference]: With dead ends: 9 [2020-11-30 01:52:25,901 INFO L226 Difference]: Without dead ends: 8 [2020-11-30 01:52:25,902 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 01:52:25,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2020-11-30 01:52:25,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2020-11-30 01:52:25,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-11-30 01:52:25,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2020-11-30 01:52:25,904 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2020-11-30 01:52:25,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:52:25,905 INFO L481 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2020-11-30 01:52:25,905 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 01:52:25,905 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2020-11-30 01:52:25,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-30 01:52:25,905 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:52:25,905 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:52:25,906 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-30 01:52:25,906 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 01:52:25,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:52:25,907 INFO L82 PathProgramCache]: Analyzing trace with hash -1053460424, now seen corresponding path program 1 times [2020-11-30 01:52:25,908 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:52:25,908 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570905095] [2020-11-30 01:52:25,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:52:25,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:52:25,969 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 01:52:25,969 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570905095] [2020-11-30 01:52:25,970 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:52:25,970 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 01:52:25,970 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365912492] [2020-11-30 01:52:25,970 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 01:52:25,971 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:52:25,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 01:52:25,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 01:52:25,972 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 5 states. [2020-11-30 01:52:26,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:52:26,109 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2020-11-30 01:52:26,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 01:52:26,120 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2020-11-30 01:52:26,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:52:26,121 INFO L225 Difference]: With dead ends: 14 [2020-11-30 01:52:26,121 INFO L226 Difference]: Without dead ends: 13 [2020-11-30 01:52:26,121 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-30 01:52:26,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-11-30 01:52:26,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-11-30 01:52:26,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-11-30 01:52:26,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2020-11-30 01:52:26,125 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 7 [2020-11-30 01:52:26,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:52:26,125 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2020-11-30 01:52:26,125 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 01:52:26,125 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2020-11-30 01:52:26,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-30 01:52:26,126 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:52:26,126 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1] [2020-11-30 01:52:26,126 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-30 01:52:26,126 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 01:52:26,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:52:26,127 INFO L82 PathProgramCache]: Analyzing trace with hash -542918662, now seen corresponding path program 1 times [2020-11-30 01:52:26,127 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:52:26,128 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033276837] [2020-11-30 01:52:26,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:52:26,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:52:26,262 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:52:26,262 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033276837] [2020-11-30 01:52:26,263 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [700390778] [2020-11-30 01:52:26,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_16a6e69e-eb76-4a76-91ab-a5777ce680a5/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 01:52:26,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:52:26,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-30 01:52:26,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:52:26,422 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-30 01:52:26,422 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:52:26,638 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:52:26,638 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1630511355] [2020-11-30 01:52:26,666 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2020-11-30 01:52:26,666 INFO L166 IcfgInterpreter]: Building call graph [2020-11-30 01:52:26,671 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-30 01:52:26,678 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-30 01:52:26,679 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-30 01:52:27,187 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-30 01:52:27,362 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 49 [2020-11-30 01:52:27,658 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 45 [2020-11-30 01:52:28,032 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 53 [2020-11-30 01:52:28,283 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 48 [2020-11-30 01:52:28,416 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2020-11-30 01:52:28,417 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 6, 7] total 18 [2020-11-30 01:52:28,417 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426929991] [2020-11-30 01:52:28,418 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 01:52:28,418 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:52:28,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 01:52:28,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2020-11-30 01:52:28,420 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 6 states. [2020-11-30 01:52:28,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:52:28,461 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2020-11-30 01:52:28,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 01:52:28,462 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-11-30 01:52:28,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:52:28,462 INFO L225 Difference]: With dead ends: 13 [2020-11-30 01:52:28,463 INFO L226 Difference]: Without dead ends: 0 [2020-11-30 01:52:28,463 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 17 SyntacticMatches, 6 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2020-11-30 01:52:28,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-30 01:52:28,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-30 01:52:28,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-30 01:52:28,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-30 01:52:28,464 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2020-11-30 01:52:28,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:52:28,464 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 01:52:28,464 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 01:52:28,464 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-30 01:52:28,465 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-30 01:52:28,681 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:52:28,682 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-30 01:52:28,806 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 45 [2020-11-30 01:52:28,810 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 24) no Hoare annotation was computed. [2020-11-30 01:52:28,811 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-30 01:52:28,811 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2020-11-30 01:52:28,811 INFO L274 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-11-30 01:52:28,811 INFO L274 CegarLoopResult]: For program point L25-1(line 25) no Hoare annotation was computed. [2020-11-30 01:52:28,812 INFO L270 CegarLoopResult]: At program point L23-2(lines 23 26) the Hoare annotation is: (let ((.cse0 (select |#memory_int| |#t~string0.base|))) (and (= |#t~string1.offset| 0) (= (select |#length| |#t~string1.base|) 26) (= |#NULL.base| 0) (= (select .cse0 |#t~string0.offset|) 48) (= (select .cse0 (+ |#t~string0.offset| 1)) 0) (= (select |#valid| 0) 0) (= 2 (select |#length| |#t~string0.base|)) (<= ULTIMATE.start_main_~y~0 2147483647) (< |#StackHeapBarrier| |#t~string0.base|) (= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~x~0) (<= 0 ULTIMATE.start_main_~x~0) (= (select |#valid| |#t~string0.base|) 1) (< 0 |#StackHeapBarrier|) (< |#StackHeapBarrier| |#t~string1.base|) (= |#NULL.offset| 0) (= (select |#valid| |#t~string1.base|) 1) (= |#t~string0.offset| 0))) [2020-11-30 01:52:28,812 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 24) no Hoare annotation was computed. [2020-11-30 01:52:28,812 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2020-11-30 01:52:28,812 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-30 01:52:28,812 INFO L270 CegarLoopResult]: At program point L28(lines 19 29) the Hoare annotation is: (<= ULTIMATE.start_main_~x~0 2147483647) [2020-11-30 01:52:28,812 INFO L274 CegarLoopResult]: For program point L24(line 24) no Hoare annotation was computed. [2020-11-30 01:52:28,812 INFO L274 CegarLoopResult]: For program point L24-1(line 24) no Hoare annotation was computed. [2020-11-30 01:52:28,812 INFO L274 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-11-30 01:52:28,823 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-30 01:52:28,824 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-30 01:52:28,824 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-30 01:52:28,824 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-30 01:52:28,824 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-30 01:52:28,825 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-30 01:52:28,825 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-30 01:52:28,825 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-30 01:52:28,825 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-30 01:52:28,832 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-30 01:52:28,832 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-30 01:52:28,832 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-30 01:52:28,832 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-30 01:52:28,833 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-30 01:52:28,833 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-30 01:52:28,833 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-30 01:52:28,833 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-30 01:52:28,834 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-30 01:52:28,838 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 01:52:28 BoogieIcfgContainer [2020-11-30 01:52:28,838 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 01:52:28,839 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 01:52:28,839 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 01:52:28,839 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 01:52:28,840 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:52:25" (3/4) ... [2020-11-30 01:52:28,843 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-30 01:52:28,852 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2020-11-30 01:52:28,852 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2020-11-30 01:52:28,852 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 01:52:28,853 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 01:52:28,914 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_16a6e69e-eb76-4a76-91ab-a5777ce680a5/bin/utaipan/witness.graphml [2020-11-30 01:52:28,915 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 01:52:28,916 INFO L168 Benchmark]: Toolchain (without parser) took 4589.69 ms. Allocated memory was 94.4 MB in the beginning and 136.3 MB in the end (delta: 41.9 MB). Free memory was 63.7 MB in the beginning and 92.0 MB in the end (delta: -28.3 MB). Peak memory consumption was 14.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:52:28,916 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 94.4 MB. Free memory was 51.3 MB in the beginning and 51.3 MB in the end (delta: 43.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:52:28,917 INFO L168 Benchmark]: CACSL2BoogieTranslator took 237.72 ms. Allocated memory is still 94.4 MB. Free memory was 63.5 MB in the beginning and 71.6 MB in the end (delta: -8.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 01:52:28,918 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.60 ms. Allocated memory is still 94.4 MB. Free memory was 71.6 MB in the beginning and 70.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:52:28,918 INFO L168 Benchmark]: Boogie Preprocessor took 19.81 ms. Allocated memory is still 94.4 MB. Free memory was 70.0 MB in the beginning and 69.3 MB in the end (delta: 760.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:52:28,918 INFO L168 Benchmark]: RCFGBuilder took 560.35 ms. Allocated memory is still 94.4 MB. Free memory was 69.3 MB in the beginning and 52.9 MB in the end (delta: 16.4 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-11-30 01:52:28,919 INFO L168 Benchmark]: TraceAbstraction took 3656.95 ms. Allocated memory was 94.4 MB in the beginning and 136.3 MB in the end (delta: 41.9 MB). Free memory was 52.5 MB in the beginning and 94.1 MB in the end (delta: -41.6 MB). Peak memory consumption was 2.5 MB. Max. memory is 16.1 GB. [2020-11-30 01:52:28,919 INFO L168 Benchmark]: Witness Printer took 75.73 ms. Allocated memory is still 136.3 MB. Free memory was 94.1 MB in the beginning and 92.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:52:28,922 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 94.4 MB. Free memory was 51.3 MB in the beginning and 51.3 MB in the end (delta: 43.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 237.72 ms. Allocated memory is still 94.4 MB. Free memory was 63.5 MB in the beginning and 71.6 MB in the end (delta: -8.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 31.60 ms. Allocated memory is still 94.4 MB. Free memory was 71.6 MB in the beginning and 70.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 19.81 ms. Allocated memory is still 94.4 MB. Free memory was 70.0 MB in the beginning and 69.3 MB in the end (delta: 760.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 560.35 ms. Allocated memory is still 94.4 MB. Free memory was 69.3 MB in the beginning and 52.9 MB in the end (delta: 16.4 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3656.95 ms. Allocated memory was 94.4 MB in the beginning and 136.3 MB in the end (delta: 41.9 MB). Free memory was 52.5 MB in the beginning and 94.1 MB in the end (delta: -41.6 MB). Peak memory consumption was 2.5 MB. Max. memory is 16.1 GB. * Witness Printer took 75.73 ms. Allocated memory is still 136.3 MB. Free memory was 94.1 MB in the beginning and 92.0 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: 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 4 specifications checked. All of them hold - InvariantResult [Line: 23]: Loop Invariant [2020-11-30 01:52:28,935 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-30 01:52:28,936 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-30 01:52:28,936 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-30 01:52:28,936 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-30 01:52:28,936 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-30 01:52:28,937 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-30 01:52:28,938 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-30 01:52:28,938 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-30 01:52:28,939 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-30 01:52:28,946 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-30 01:52:28,946 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-30 01:52:28,946 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-30 01:52:28,947 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-30 01:52:28,947 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-30 01:52:28,947 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-30 01:52:28,947 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-30 01:52:28,947 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-30 01:52:28,947 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL Derived loop invariant: ((((((((((((((("benchmark37_conjunctive.c" == 0 && unknown-#length-unknown["benchmark37_conjunctive.c"] == 26) && #NULL == 0) && unknown-#memory_int-unknown["0"]["0"] == 48) && unknown-#memory_int-unknown["0"]["0" + 1] == 0) && \valid[0] == 0) && 2 == unknown-#length-unknown["0"]) && y <= 2147483647) && unknown-#StackHeapBarrier-unknown < "0") && y == x) && 0 <= x) && \valid["0"] == 1) && 0 < unknown-#StackHeapBarrier-unknown) && unknown-#StackHeapBarrier-unknown < "benchmark37_conjunctive.c") && #NULL == 0) && \valid["benchmark37_conjunctive.c"] == 1) && "0" == 0 - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: x <= 2147483647 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.4s, OverallIterations: 5, TraceHistogramMax: 2, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 21 SDtfs, 26 SDslu, 20 SDs, 0 SdLazy, 59 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 54 GetRequests, 19 SyntacticMatches, 6 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 3 NumberOfFragments, 75 HoareAnnotationTreeSize, 2 FomulaSimplifications, 79 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 3 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 46 NumberOfCodeBlocks, 46 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 51 ConstructedInterpolants, 0 QuantifiedInterpolants, 1781 SizeOfPredicates, 6 NumberOfNonLiveVariables, 56 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 7 InterpolantComputations, 4 PerfectInterpolantSequences, 1/15 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: OVERALL_TIME[ms]: 522, ICFG_INTERPRETER_ENTERED_PROCEDURES: 1, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 8, DAG_INTERPRETER_EARLY_EXITS: 0, TOOLS_POST_APPLICATIONS: 15, TOOLS_POST_TIME[ms]: 139, 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: 15, TOOLS_QUANTIFIERELIM_TIME[ms]: 132, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 123, FLUID_QUERY_TIME[ms]: 5, FLUID_QUERIES: 27, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 3, DOMAIN_JOIN_TIME[ms]: 304, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME[ms]: 0, DOMAIN_WIDEN_APPLICATIONS: 0, DOMAIN_WIDEN_TIME[ms]: 0, DOMAIN_ISSUBSETEQ_APPLICATIONS: 1, DOMAIN_ISSUBSETEQ_TIME[ms]: 3, DOMAIN_ISBOTTOM_APPLICATIONS: 8, DOMAIN_ISBOTTOM_TIME[ms]: 22, LOOP_SUMMARIZER_APPLICATIONS: 1, LOOP_SUMMARIZER_CACHE_MISSES: 1, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 14, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 14, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 1, CALL_SUMMARIZER_APPLICATIONS: 0, CALL_SUMMARIZER_CACHE_MISSES: 0, CALL_SUMMARIZER_OVERALL_TIME[ms]: 0, CALL_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 0, PROCEDURE_GRAPH_BUILDER_TIME[ms]: 2, PATH_EXPR_TIME[ms]: 4, REGEX_TO_DAG_TIME[ms]: 3, DAG_COMPRESSION_TIME[ms]: 9, DAG_COMPRESSION_PROCESSED_NODES: 80, DAG_COMPRESSION_RETAINED_NODES: 29, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...