./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/loop-zilu/benchmark22_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_c6c8ef05-bc88-46cb-81bc-d895aeec18fe/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_c6c8ef05-bc88-46cb-81bc-d895aeec18fe/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_c6c8ef05-bc88-46cb-81bc-d895aeec18fe/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_c6c8ef05-bc88-46cb-81bc-d895aeec18fe/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-zilu/benchmark22_conjunctive.i -s /tmp/vcloud-vcloud-master/worker/run_dir_c6c8ef05-bc88-46cb-81bc-d895aeec18fe/bin/utaipan/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_c6c8ef05-bc88-46cb-81bc-d895aeec18fe/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 9b57d01e5f5efa477f018f1cacf9416655bf2c2d ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis No suitable file found in config dir /tmp/vcloud-vcloud-master/worker/run_dir_c6c8ef05-bc88-46cb-81bc-d895aeec18fe/bin/utaipan/config using search string *Overflow*32bit*_Bitvector*.epf No suitable settings file found using Overflow*32bit*_Bitvector ERROR: UNSUPPORTED PROPERTY Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@40ec52c0 --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 02:15:12,353 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 02:15:12,361 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 02:15:12,425 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 02:15:12,426 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 02:15:12,428 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 02:15:12,457 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 02:15:12,460 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 02:15:12,463 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 02:15:12,464 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 02:15:12,466 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 02:15:12,468 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 02:15:12,469 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 02:15:12,470 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 02:15:12,472 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 02:15:12,474 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 02:15:12,475 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 02:15:12,477 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 02:15:12,480 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 02:15:12,490 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 02:15:12,492 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 02:15:12,499 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 02:15:12,501 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 02:15:12,502 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 02:15:12,506 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 02:15:12,507 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 02:15:12,507 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 02:15:12,509 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 02:15:12,509 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 02:15:12,511 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 02:15:12,511 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 02:15:12,518 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 02:15:12,521 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 02:15:12,523 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 02:15:12,525 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 02:15:12,525 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 02:15:12,526 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 02:15:12,526 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 02:15:12,527 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 02:15:12,528 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 02:15:12,529 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 02:15:12,532 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_c6c8ef05-bc88-46cb-81bc-d895aeec18fe/bin/utaipan/config/svcomp-Overflow-32bit-Taipan_Default.epf [2020-11-30 02:15:12,587 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 02:15:12,587 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 02:15:12,589 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-30 02:15:12,589 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-30 02:15:12,590 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-30 02:15:12,590 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-30 02:15:12,591 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-30 02:15:12,591 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-30 02:15:12,591 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-30 02:15:12,591 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-30 02:15:12,593 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-30 02:15:12,593 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-30 02:15:12,594 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-30 02:15:12,594 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-30 02:15:12,594 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-30 02:15:12,596 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 02:15:12,597 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 02:15:12,597 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-30 02:15:12,597 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 02:15:12,598 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 02:15:12,598 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 02:15:12,598 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 02:15:12,599 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 02:15:12,599 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 02:15:12,600 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-11-30 02:15:12,600 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 02:15:12,600 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 02:15:12,601 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 02:15:12,601 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 02:15:12,601 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 02:15:12,602 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 02:15:12,602 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 02:15:12,603 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 02:15:12,603 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 02:15:12,603 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 02:15:12,604 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 02:15:12,604 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-30 02:15:12,604 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 02:15:12,605 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 02:15:12,605 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 02:15:12,605 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 02:15:12,606 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_c6c8ef05-bc88-46cb-81bc-d895aeec18fe/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_c6c8ef05-bc88-46cb-81bc-d895aeec18fe/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9b57d01e5f5efa477f018f1cacf9416655bf2c2d [2020-11-30 02:15:12,944 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 02:15:12,971 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 02:15:12,974 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 02:15:12,976 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 02:15:12,977 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 02:15:12,978 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_c6c8ef05-bc88-46cb-81bc-d895aeec18fe/bin/utaipan/../../sv-benchmarks/c/loop-zilu/benchmark22_conjunctive.i [2020-11-30 02:15:13,069 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c6c8ef05-bc88-46cb-81bc-d895aeec18fe/bin/utaipan/data/8c844e224/91bc4794251447aeb83eeef0ee10ab13/FLAG36c6c3b1e [2020-11-30 02:15:13,757 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 02:15:13,758 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_c6c8ef05-bc88-46cb-81bc-d895aeec18fe/sv-benchmarks/c/loop-zilu/benchmark22_conjunctive.i [2020-11-30 02:15:13,775 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c6c8ef05-bc88-46cb-81bc-d895aeec18fe/bin/utaipan/data/8c844e224/91bc4794251447aeb83eeef0ee10ab13/FLAG36c6c3b1e [2020-11-30 02:15:14,093 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_c6c8ef05-bc88-46cb-81bc-d895aeec18fe/bin/utaipan/data/8c844e224/91bc4794251447aeb83eeef0ee10ab13 [2020-11-30 02:15:14,097 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 02:15:14,098 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 02:15:14,102 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 02:15:14,102 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 02:15:14,106 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 02:15:14,108 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:15:14" (1/1) ... [2020-11-30 02:15:14,110 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bf58ebc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:15:14, skipping insertion in model container [2020-11-30 02:15:14,111 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:15:14" (1/1) ... [2020-11-30 02:15:14,120 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 02:15:14,138 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 02:15:14,392 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:15:14,406 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 02:15:14,428 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:15:14,447 INFO L208 MainTranslator]: Completed translation [2020-11-30 02:15:14,447 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:15:14 WrapperNode [2020-11-30 02:15:14,447 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 02:15:14,449 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 02:15:14,449 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 02:15:14,449 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 02:15:14,458 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:15:14" (1/1) ... [2020-11-30 02:15:14,466 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:15:14" (1/1) ... [2020-11-30 02:15:14,486 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 02:15:14,487 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 02:15:14,487 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 02:15:14,488 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 02:15:14,498 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:15:14" (1/1) ... [2020-11-30 02:15:14,498 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:15:14" (1/1) ... [2020-11-30 02:15:14,500 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:15:14" (1/1) ... [2020-11-30 02:15:14,500 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:15:14" (1/1) ... [2020-11-30 02:15:14,504 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:15:14" (1/1) ... [2020-11-30 02:15:14,509 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:15:14" (1/1) ... [2020-11-30 02:15:14,510 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:15:14" (1/1) ... [2020-11-30 02:15:14,512 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 02:15:14,514 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 02:15:14,514 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 02:15:14,514 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 02:15:14,516 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:15:14" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c6c8ef05-bc88-46cb-81bc-d895aeec18fe/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 02:15:14,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 02:15:14,602 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 02:15:14,603 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 02:15:14,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 02:15:15,009 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 02:15:15,010 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-30 02:15:15,012 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:15:15 BoogieIcfgContainer [2020-11-30 02:15:15,013 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 02:15:15,015 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 02:15:15,015 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 02:15:15,020 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 02:15:15,021 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 02:15:14" (1/3) ... [2020-11-30 02:15:15,022 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@137cd20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:15:15, skipping insertion in model container [2020-11-30 02:15:15,022 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:15:14" (2/3) ... [2020-11-30 02:15:15,023 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@137cd20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:15:15, skipping insertion in model container [2020-11-30 02:15:15,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:15:15" (3/3) ... [2020-11-30 02:15:15,025 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark22_conjunctive.i [2020-11-30 02:15:15,039 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 02:15:15,045 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-11-30 02:15:15,065 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-30 02:15:15,119 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 02:15:15,120 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 02:15:15,120 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 02:15:15,120 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 02:15:15,120 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 02:15:15,120 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 02:15:15,121 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 02:15:15,121 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 02:15:15,137 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2020-11-30 02:15:15,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-30 02:15:15,142 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:15:15,143 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-30 02:15:15,144 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 02:15:15,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:15:15,166 INFO L82 PathProgramCache]: Analyzing trace with hash 2271356, now seen corresponding path program 1 times [2020-11-30 02:15:15,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:15:15,178 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445704711] [2020-11-30 02:15:15,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:15:15,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:15:15,381 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 02:15:15,382 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445704711] [2020-11-30 02:15:15,383 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:15:15,383 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 02:15:15,384 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365085189] [2020-11-30 02:15:15,389 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:15:15,390 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:15:15,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:15:15,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:15:15,410 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 3 states. [2020-11-30 02:15:15,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:15:15,506 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2020-11-30 02:15:15,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:15:15,508 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-11-30 02:15:15,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:15:15,530 INFO L225 Difference]: With dead ends: 19 [2020-11-30 02:15:15,530 INFO L226 Difference]: Without dead ends: 14 [2020-11-30 02:15:15,533 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 02:15:15,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-11-30 02:15:15,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2020-11-30 02:15:15,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-11-30 02:15:15,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2020-11-30 02:15:15,584 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 4 [2020-11-30 02:15:15,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:15:15,585 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2020-11-30 02:15:15,585 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:15:15,585 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2020-11-30 02:15:15,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-30 02:15:15,587 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:15:15,587 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-30 02:15:15,588 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 02:15:15,589 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 02:15:15,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:15:15,596 INFO L82 PathProgramCache]: Analyzing trace with hash 70412086, now seen corresponding path program 1 times [2020-11-30 02:15:15,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:15:15,597 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791394364] [2020-11-30 02:15:15,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:15:15,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:15:15,691 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 02:15:15,692 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791394364] [2020-11-30 02:15:15,692 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:15:15,693 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 02:15:15,693 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597622515] [2020-11-30 02:15:15,695 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:15:15,695 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:15:15,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:15:15,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:15:15,697 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 3 states. [2020-11-30 02:15:15,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:15:15,737 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2020-11-30 02:15:15,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:15:15,739 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-11-30 02:15:15,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:15:15,740 INFO L225 Difference]: With dead ends: 15 [2020-11-30 02:15:15,740 INFO L226 Difference]: Without dead ends: 14 [2020-11-30 02:15:15,741 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 02:15:15,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-11-30 02:15:15,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-11-30 02:15:15,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-11-30 02:15:15,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2020-11-30 02:15:15,746 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 5 [2020-11-30 02:15:15,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:15:15,746 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2020-11-30 02:15:15,747 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:15:15,747 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2020-11-30 02:15:15,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-30 02:15:15,747 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:15:15,748 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-30 02:15:15,748 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 02:15:15,751 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 02:15:15,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:15:15,753 INFO L82 PathProgramCache]: Analyzing trace with hash -2112192578, now seen corresponding path program 1 times [2020-11-30 02:15:15,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:15:15,756 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302883626] [2020-11-30 02:15:15,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:15:15,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:15:15,852 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 02:15:15,853 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302883626] [2020-11-30 02:15:15,853 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:15:15,854 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 02:15:15,854 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485766069] [2020-11-30 02:15:15,854 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 02:15:15,855 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:15:15,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 02:15:15,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 02:15:15,857 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 4 states. [2020-11-30 02:15:15,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:15:15,934 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2020-11-30 02:15:15,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 02:15:15,936 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-11-30 02:15:15,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:15:15,938 INFO L225 Difference]: With dead ends: 18 [2020-11-30 02:15:15,938 INFO L226 Difference]: Without dead ends: 17 [2020-11-30 02:15:15,939 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 02:15:15,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-11-30 02:15:15,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15. [2020-11-30 02:15:15,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-11-30 02:15:15,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2020-11-30 02:15:15,947 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 6 [2020-11-30 02:15:15,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:15:15,948 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2020-11-30 02:15:15,948 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 02:15:15,948 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2020-11-30 02:15:15,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-30 02:15:15,949 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:15:15,949 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:15:15,950 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-30 02:15:15,950 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 02:15:15,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:15:15,951 INFO L82 PathProgramCache]: Analyzing trace with hash -1053460424, now seen corresponding path program 1 times [2020-11-30 02:15:15,952 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:15:15,952 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743855792] [2020-11-30 02:15:15,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:15:15,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:15:16,041 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 02:15:16,042 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743855792] [2020-11-30 02:15:16,042 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:15:16,042 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 02:15:16,043 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125517651] [2020-11-30 02:15:16,043 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 02:15:16,044 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:15:16,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 02:15:16,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 02:15:16,045 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 4 states. [2020-11-30 02:15:16,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:15:16,103 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2020-11-30 02:15:16,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 02:15:16,104 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-11-30 02:15:16,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:15:16,105 INFO L225 Difference]: With dead ends: 15 [2020-11-30 02:15:16,105 INFO L226 Difference]: Without dead ends: 14 [2020-11-30 02:15:16,106 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 02:15:16,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-11-30 02:15:16,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-11-30 02:15:16,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-11-30 02:15:16,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2020-11-30 02:15:16,111 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 7 [2020-11-30 02:15:16,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:15:16,112 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2020-11-30 02:15:16,114 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 02:15:16,114 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2020-11-30 02:15:16,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-30 02:15:16,115 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:15:16,116 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:15:16,116 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-30 02:15:16,117 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 02:15:16,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:15:16,118 INFO L82 PathProgramCache]: Analyzing trace with hash 1236815866, now seen corresponding path program 1 times [2020-11-30 02:15:16,119 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:15:16,120 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249542798] [2020-11-30 02:15:16,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:15:16,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:15:16,256 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:15:16,256 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249542798] [2020-11-30 02:15:16,257 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1897494141] [2020-11-30 02:15:16,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c6c8ef05-bc88-46cb-81bc-d895aeec18fe/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 02:15:16,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:15:16,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-30 02:15:16,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:15:16,498 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:15:16,498 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:15:16,577 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:15:16,578 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [432356689] [2020-11-30 02:15:16,607 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2020-11-30 02:15:16,607 INFO L166 IcfgInterpreter]: Building call graph [2020-11-30 02:15:16,613 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-30 02:15:16,621 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-30 02:15:16,622 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-30 02:15:17,472 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-30 02:15:17,707 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 26 [2020-11-30 02:15:17,875 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 49 [2020-11-30 02:15:18,228 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 54 [2020-11-30 02:15:18,571 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 55 [2020-11-30 02:15:18,786 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 02:15:18,787 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-11-30 02:15:18,787 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2020-11-30 02:15:18,787 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244425505] [2020-11-30 02:15:18,787 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-30 02:15:18,787 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:15:18,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-30 02:15:18,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2020-11-30 02:15:18,789 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 11 states. [2020-11-30 02:15:18,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:15:18,929 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2020-11-30 02:15:18,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-30 02:15:18,930 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 9 [2020-11-30 02:15:18,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:15:18,931 INFO L225 Difference]: With dead ends: 25 [2020-11-30 02:15:18,931 INFO L226 Difference]: Without dead ends: 24 [2020-11-30 02:15:18,932 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2020-11-30 02:15:18,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-11-30 02:15:18,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2020-11-30 02:15:18,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-11-30 02:15:18,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2020-11-30 02:15:18,936 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 9 [2020-11-30 02:15:18,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:15:18,937 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2020-11-30 02:15:18,937 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-30 02:15:18,937 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2020-11-30 02:15:18,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-30 02:15:18,938 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:15:18,938 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2020-11-30 02:15:19,169 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 02:15:19,169 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 02:15:19,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:15:19,170 INFO L82 PathProgramCache]: Analyzing trace with hash -313413768, now seen corresponding path program 1 times [2020-11-30 02:15:19,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:15:19,170 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898409306] [2020-11-30 02:15:19,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:15:19,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:15:19,224 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:15:19,224 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898409306] [2020-11-30 02:15:19,224 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [697305360] [2020-11-30 02:15:19,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c6c8ef05-bc88-46cb-81bc-d895aeec18fe/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2020-11-30 02:15:19,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:15:19,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-30 02:15:19,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 02:15:19,369 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:15:19,369 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:15:19,416 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:15:19,416 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2020-11-30 02:15:19,416 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 10 [2020-11-30 02:15:19,417 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531196771] [2020-11-30 02:15:19,417 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 02:15:19,417 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:15:19,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 02:15:19,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2020-11-30 02:15:19,418 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand 5 states. [2020-11-30 02:15:19,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:15:19,504 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2020-11-30 02:15:19,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 02:15:19,504 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-11-30 02:15:19,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:15:19,505 INFO L225 Difference]: With dead ends: 22 [2020-11-30 02:15:19,505 INFO L226 Difference]: Without dead ends: 21 [2020-11-30 02:15:19,506 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-11-30 02:15:19,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-11-30 02:15:19,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-11-30 02:15:19,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-11-30 02:15:19,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2020-11-30 02:15:19,511 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 10 [2020-11-30 02:15:19,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:15:19,511 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2020-11-30 02:15:19,511 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 02:15:19,512 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2020-11-30 02:15:19,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-30 02:15:19,516 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:15:19,516 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2020-11-30 02:15:19,736 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2020-11-30 02:15:19,736 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 02:15:19,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:15:19,737 INFO L82 PathProgramCache]: Analyzing trace with hash -1125892164, now seen corresponding path program 1 times [2020-11-30 02:15:19,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:15:19,737 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718755929] [2020-11-30 02:15:19,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:15:19,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:15:19,805 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 02:15:19,805 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718755929] [2020-11-30 02:15:19,806 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1618609999] [2020-11-30 02:15:19,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c6c8ef05-bc88-46cb-81bc-d895aeec18fe/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 02:15:19,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:15:19,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-30 02:15:19,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:15:19,879 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 02:15:19,882 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:15:19,993 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 02:15:19,994 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1147760386] [2020-11-30 02:15:19,997 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2020-11-30 02:15:19,997 INFO L166 IcfgInterpreter]: Building call graph [2020-11-30 02:15:19,997 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-30 02:15:19,998 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-30 02:15:19,998 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-30 02:15:20,459 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-30 02:15:20,587 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 25 [2020-11-30 02:15:20,750 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 49 [2020-11-30 02:15:21,053 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 54 [2020-11-30 02:15:21,366 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 55 [2020-11-30 02:15:21,581 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 02:15:21,582 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-11-30 02:15:21,582 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2020-11-30 02:15:21,582 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484224060] [2020-11-30 02:15:21,583 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-30 02:15:21,583 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:15:21,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-30 02:15:21,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2020-11-30 02:15:21,584 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand 10 states. [2020-11-30 02:15:21,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:15:21,754 INFO L93 Difference]: Finished difference Result 31 states and 33 transitions. [2020-11-30 02:15:21,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-30 02:15:21,755 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 11 [2020-11-30 02:15:21,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:15:21,756 INFO L225 Difference]: With dead ends: 31 [2020-11-30 02:15:21,756 INFO L226 Difference]: Without dead ends: 30 [2020-11-30 02:15:21,756 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-11-30 02:15:21,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-11-30 02:15:21,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2020-11-30 02:15:21,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-11-30 02:15:21,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2020-11-30 02:15:21,762 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 11 [2020-11-30 02:15:21,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:15:21,763 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2020-11-30 02:15:21,763 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-30 02:15:21,763 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2020-11-30 02:15:21,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-30 02:15:21,764 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:15:21,764 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 1, 1, 1] [2020-11-30 02:15:21,968 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2020-11-30 02:15:21,968 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 02:15:21,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:15:21,969 INFO L82 PathProgramCache]: Analyzing trace with hash 303466810, now seen corresponding path program 2 times [2020-11-30 02:15:21,969 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:15:21,969 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035847444] [2020-11-30 02:15:21,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:15:21,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:15:22,085 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:15:22,085 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035847444] [2020-11-30 02:15:22,085 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [227613367] [2020-11-30 02:15:22,085 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c6c8ef05-bc88-46cb-81bc-d895aeec18fe/bin/utaipan/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 02:15:22,146 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-11-30 02:15:22,147 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 02:15:22,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-30 02:15:22,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:15:22,345 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:15:22,345 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:15:22,567 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:15:22,567 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1986377136] [2020-11-30 02:15:22,569 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2020-11-30 02:15:22,570 INFO L166 IcfgInterpreter]: Building call graph [2020-11-30 02:15:22,570 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-30 02:15:22,570 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-30 02:15:22,570 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-30 02:15:23,000 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-30 02:15:23,169 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 25 [2020-11-30 02:15:23,338 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 49 [2020-11-30 02:15:23,584 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 28 [2020-11-30 02:15:23,808 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 30 [2020-11-30 02:15:24,081 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 02:15:24,081 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-11-30 02:15:24,081 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 22 [2020-11-30 02:15:24,081 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461290249] [2020-11-30 02:15:24,082 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-11-30 02:15:24,082 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:15:24,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-11-30 02:15:24,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=696, Unknown=0, NotChecked=0, Total=812 [2020-11-30 02:15:24,084 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand 23 states. [2020-11-30 02:15:24,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:15:24,651 INFO L93 Difference]: Finished difference Result 44 states and 47 transitions. [2020-11-30 02:15:24,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-11-30 02:15:24,651 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 19 [2020-11-30 02:15:24,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:15:24,653 INFO L225 Difference]: With dead ends: 44 [2020-11-30 02:15:24,653 INFO L226 Difference]: Without dead ends: 43 [2020-11-30 02:15:24,654 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 358 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=244, Invalid=1162, Unknown=0, NotChecked=0, Total=1406 [2020-11-30 02:15:24,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-11-30 02:15:24,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 41. [2020-11-30 02:15:24,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-11-30 02:15:24,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 43 transitions. [2020-11-30 02:15:24,669 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 43 transitions. Word has length 19 [2020-11-30 02:15:24,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:15:24,670 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 43 transitions. [2020-11-30 02:15:24,670 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-11-30 02:15:24,671 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 43 transitions. [2020-11-30 02:15:24,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-11-30 02:15:24,672 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:15:24,672 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 1, 1, 1] [2020-11-30 02:15:24,897 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 02:15:24,897 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 02:15:24,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:15:24,897 INFO L82 PathProgramCache]: Analyzing trace with hash 1140043070, now seen corresponding path program 2 times [2020-11-30 02:15:24,898 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:15:24,898 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568289280] [2020-11-30 02:15:24,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:15:24,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:15:25,034 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:15:25,035 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568289280] [2020-11-30 02:15:25,035 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [978102333] [2020-11-30 02:15:25,035 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c6c8ef05-bc88-46cb-81bc-d895aeec18fe/bin/utaipan/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 02:15:25,085 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2020-11-30 02:15:25,086 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 02:15:25,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-30 02:15:25,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:15:25,112 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:15:25,112 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:15:25,320 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:15:25,321 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [617466675] [2020-11-30 02:15:25,323 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2020-11-30 02:15:25,323 INFO L166 IcfgInterpreter]: Building call graph [2020-11-30 02:15:25,323 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-30 02:15:25,324 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-30 02:15:25,324 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-30 02:15:25,695 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-30 02:15:25,948 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 49 [2020-11-30 02:15:26,171 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 54 [2020-11-30 02:15:26,482 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 55 [2020-11-30 02:15:26,727 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 02:15:26,727 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-11-30 02:15:26,728 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 21 [2020-11-30 02:15:26,728 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206808160] [2020-11-30 02:15:26,728 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-11-30 02:15:26,729 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:15:26,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-11-30 02:15:26,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=608, Unknown=0, NotChecked=0, Total=756 [2020-11-30 02:15:26,730 INFO L87 Difference]: Start difference. First operand 41 states and 43 transitions. Second operand 22 states. [2020-11-30 02:15:27,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:15:27,056 INFO L93 Difference]: Finished difference Result 63 states and 68 transitions. [2020-11-30 02:15:27,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-11-30 02:15:27,056 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 26 [2020-11-30 02:15:27,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:15:27,058 INFO L225 Difference]: With dead ends: 63 [2020-11-30 02:15:27,058 INFO L226 Difference]: Without dead ends: 62 [2020-11-30 02:15:27,059 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=323, Invalid=1083, Unknown=0, NotChecked=0, Total=1406 [2020-11-30 02:15:27,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-11-30 02:15:27,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 58. [2020-11-30 02:15:27,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-11-30 02:15:27,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 61 transitions. [2020-11-30 02:15:27,068 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 61 transitions. Word has length 26 [2020-11-30 02:15:27,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:15:27,069 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 61 transitions. [2020-11-30 02:15:27,069 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-11-30 02:15:27,069 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 61 transitions. [2020-11-30 02:15:27,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-11-30 02:15:27,070 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:15:27,071 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 1, 1, 1] [2020-11-30 02:15:27,296 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable96 [2020-11-30 02:15:27,297 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 02:15:27,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:15:27,297 INFO L82 PathProgramCache]: Analyzing trace with hash -1003271238, now seen corresponding path program 3 times [2020-11-30 02:15:27,297 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:15:27,297 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261901350] [2020-11-30 02:15:27,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:15:27,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:15:27,595 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:15:27,596 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261901350] [2020-11-30 02:15:27,596 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [22364858] [2020-11-30 02:15:27,596 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c6c8ef05-bc88-46cb-81bc-d895aeec18fe/bin/utaipan/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 02:15:27,646 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-30 02:15:27,646 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 02:15:27,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 24 conjunts are in the unsatisfiable core [2020-11-30 02:15:27,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:15:28,257 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:15:28,257 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:15:54,670 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:15:54,670 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [145106489] [2020-11-30 02:15:54,673 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2020-11-30 02:15:54,673 INFO L166 IcfgInterpreter]: Building call graph [2020-11-30 02:15:54,674 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-30 02:15:54,674 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-30 02:15:54,674 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-30 02:15:54,991 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-30 02:15:55,267 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 26 [2020-11-30 02:15:55,525 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 49 [2020-11-30 02:15:55,956 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 54 [2020-11-30 02:15:56,375 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 55 [2020-11-30 02:15:56,597 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 02:15:56,597 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-11-30 02:15:56,597 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 46 [2020-11-30 02:15:56,598 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487261764] [2020-11-30 02:15:56,599 INFO L461 AbstractCegarLoop]: Interpolant automaton has 47 states [2020-11-30 02:15:56,599 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:15:56,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2020-11-30 02:15:56,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=348, Invalid=2394, Unknown=14, NotChecked=0, Total=2756 [2020-11-30 02:15:56,601 INFO L87 Difference]: Start difference. First operand 58 states and 61 transitions. Second operand 47 states. [2020-11-30 02:15:59,399 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (* c_ULTIMATE.start_main_~x~0 (- 1)))) (and (<= c_ULTIMATE.start_main_~y~0 (+ (div (+ .cse0 (* c_ULTIMATE.start_main_~y~0 (- 2)) 2147483639) 2) 1)) (forall ((aux_div_aux_mod_v_ULTIMATE.start_main_~x~0_65_41_197 Int) (aux_div_aux_div_v_ULTIMATE.start_main_~x~0_65_41_81 Int) (aux_mod_aux_div_v_ULTIMATE.start_main_~x~0_65_41_81 Int) (v_ULTIMATE.start_main_~y~0_53 Int)) (let ((.cse4 (* 2 v_ULTIMATE.start_main_~y~0_53)) (.cse2 (* 2 aux_div_aux_mod_v_ULTIMATE.start_main_~x~0_65_41_197)) (.cse3 (* 2 aux_mod_aux_div_v_ULTIMATE.start_main_~x~0_65_41_81)) (.cse1 (* 4 aux_div_aux_div_v_ULTIMATE.start_main_~x~0_65_41_81))) (or (< aux_mod_aux_div_v_ULTIMATE.start_main_~x~0_65_41_81 0) (< (+ |c_ULTIMATE.start_main_#t~post6| 1) v_ULTIMATE.start_main_~y~0_53) (< .cse1 (+ .cse2 .cse3 2147483639)) (<= (+ .cse2 c_ULTIMATE.start_main_~x~0 .cse4 6) 0) (< (+ c_ULTIMATE.start_main_~x~0 .cse1 .cse4) (+ .cse3 2147483635)) (< (+ aux_div_aux_div_v_ULTIMATE.start_main_~x~0_65_41_81 v_ULTIMATE.start_main_~y~0_53) (+ aux_div_aux_mod_v_ULTIMATE.start_main_~x~0_65_41_197 1073741820)) (<= (+ .cse2 .cse3 2147483642) .cse1) (<= 2 aux_mod_aux_div_v_ULTIMATE.start_main_~x~0_65_41_81)))) (<= (+ c_ULTIMATE.start_main_~x~0 c_ULTIMATE.start_main_~y~0) 2147483647) (forall ((aux_div_aux_mod_v_ULTIMATE.start_main_~x~0_65_41_197 Int) (aux_div_aux_div_v_ULTIMATE.start_main_~x~0_65_41_81 Int) (aux_mod_aux_div_v_ULTIMATE.start_main_~x~0_65_41_81 Int) (v_ULTIMATE.start_main_~y~0_53 Int)) (let ((.cse7 (* 2 aux_mod_aux_div_v_ULTIMATE.start_main_~x~0_65_41_81)) (.cse5 (* 4 aux_div_aux_div_v_ULTIMATE.start_main_~x~0_65_41_81)) (.cse6 (* 2 aux_div_aux_mod_v_ULTIMATE.start_main_~x~0_65_41_197)) (.cse8 (* 2 c_ULTIMATE.start_main_~y~0)) (.cse9 (* 2 v_ULTIMATE.start_main_~y~0_53))) (or (< aux_mod_aux_div_v_ULTIMATE.start_main_~x~0_65_41_81 0) (< .cse5 (+ .cse6 .cse7 2147483639)) (< (+ c_ULTIMATE.start_main_~x~0 .cse8 .cse5 .cse9) (+ .cse7 2147483634)) (< (+ c_ULTIMATE.start_main_~y~0 2) v_ULTIMATE.start_main_~y~0_53) (< (+ aux_div_aux_div_v_ULTIMATE.start_main_~x~0_65_41_81 v_ULTIMATE.start_main_~y~0_53) (+ aux_div_aux_mod_v_ULTIMATE.start_main_~x~0_65_41_197 1073741820)) (<= (+ .cse6 .cse7 2147483642) .cse5) (<= (+ .cse6 c_ULTIMATE.start_main_~x~0 .cse8 .cse9 7) 0) (<= 2 aux_mod_aux_div_v_ULTIMATE.start_main_~x~0_65_41_81)))) (forall ((aux_div_aux_mod_v_ULTIMATE.start_main_~x~0_65_41_197 Int) (aux_div_aux_div_v_ULTIMATE.start_main_~x~0_65_41_81 Int) (aux_mod_aux_div_v_ULTIMATE.start_main_~x~0_65_41_81 Int)) (let ((.cse11 (* 2 aux_div_aux_mod_v_ULTIMATE.start_main_~x~0_65_41_197)) (.cse12 (* 2 aux_mod_aux_div_v_ULTIMATE.start_main_~x~0_65_41_81)) (.cse10 (* 4 aux_div_aux_div_v_ULTIMATE.start_main_~x~0_65_41_81))) (or (< (+ c_ULTIMATE.start_main_~y~0 aux_div_aux_div_v_ULTIMATE.start_main_~x~0_65_41_81) (+ aux_div_aux_mod_v_ULTIMATE.start_main_~x~0_65_41_197 1073741821)) (< aux_mod_aux_div_v_ULTIMATE.start_main_~x~0_65_41_81 0) (< .cse10 (+ .cse11 .cse12 2147483639)) (<= (+ .cse11 c_ULTIMATE.start_main_~x~0 c_ULTIMATE.start_main_~y~0 5) 0) (< (+ c_ULTIMATE.start_main_~x~0 .cse10 c_ULTIMATE.start_main_~y~0) (+ .cse12 2147483636)) (<= (+ .cse11 .cse12 2147483642) .cse10) (<= 2 aux_mod_aux_div_v_ULTIMATE.start_main_~x~0_65_41_81)))) (<= (+ c_ULTIMATE.start_main_~x~0 (* 2 c_ULTIMATE.start_main_~y~0)) 2147483646) (forall ((aux_div_aux_mod_v_ULTIMATE.start_main_~x~0_65_41_197 Int) (aux_div_aux_div_v_ULTIMATE.start_main_~x~0_65_41_81 Int) (aux_mod_aux_div_v_ULTIMATE.start_main_~x~0_65_41_81 Int) (v_ULTIMATE.start_main_~y~0_53 Int)) (let ((.cse14 (* 2 v_ULTIMATE.start_main_~y~0_53)) (.cse16 (* 2 aux_div_aux_mod_v_ULTIMATE.start_main_~x~0_65_41_197)) (.cse15 (* 2 aux_mod_aux_div_v_ULTIMATE.start_main_~x~0_65_41_81)) (.cse13 (* 4 aux_div_aux_div_v_ULTIMATE.start_main_~x~0_65_41_81))) (or (< (+ c_ULTIMATE.start_main_~x~0 c_ULTIMATE.start_main_~y~0 .cse13 .cse14) (+ .cse15 2147483635)) (< aux_mod_aux_div_v_ULTIMATE.start_main_~x~0_65_41_81 0) (< .cse13 (+ .cse16 .cse15 2147483639)) (<= (+ .cse16 c_ULTIMATE.start_main_~x~0 c_ULTIMATE.start_main_~y~0 .cse14 6) 0) (< (+ c_ULTIMATE.start_main_~y~0 1) v_ULTIMATE.start_main_~y~0_53) (< (+ aux_div_aux_div_v_ULTIMATE.start_main_~x~0_65_41_81 v_ULTIMATE.start_main_~y~0_53) (+ aux_div_aux_mod_v_ULTIMATE.start_main_~x~0_65_41_197 1073741820)) (<= (+ .cse16 .cse15 2147483642) .cse13) (<= 2 aux_mod_aux_div_v_ULTIMATE.start_main_~x~0_65_41_81)))) (<= (+ c_ULTIMATE.start_main_~x~0 |c_ULTIMATE.start_main_#t~post6|) 2147483646) (forall ((aux_div_aux_mod_v_ULTIMATE.start_main_~x~0_65_41_197 Int) (aux_div_aux_div_v_ULTIMATE.start_main_~x~0_65_41_81 Int) (aux_mod_aux_div_v_ULTIMATE.start_main_~x~0_65_41_81 Int) (v_ULTIMATE.start_main_~y~0_53 Int)) (let ((.cse18 (* 2 v_ULTIMATE.start_main_~y~0_53)) (.cse20 (* 2 aux_div_aux_mod_v_ULTIMATE.start_main_~x~0_65_41_197)) (.cse19 (* 2 aux_mod_aux_div_v_ULTIMATE.start_main_~x~0_65_41_81)) (.cse17 (* 4 aux_div_aux_div_v_ULTIMATE.start_main_~x~0_65_41_81))) (or (< (+ |c_ULTIMATE.start_main_#t~post6| 2) v_ULTIMATE.start_main_~y~0_53) (< (+ c_ULTIMATE.start_main_~x~0 .cse17 |c_ULTIMATE.start_main_#t~post6| .cse18) (+ .cse19 2147483634)) (< aux_mod_aux_div_v_ULTIMATE.start_main_~x~0_65_41_81 0) (< .cse17 (+ .cse20 .cse19 2147483639)) (<= (+ .cse20 c_ULTIMATE.start_main_~x~0 |c_ULTIMATE.start_main_#t~post6| .cse18 7) 0) (< (+ aux_div_aux_div_v_ULTIMATE.start_main_~x~0_65_41_81 v_ULTIMATE.start_main_~y~0_53) (+ aux_div_aux_mod_v_ULTIMATE.start_main_~x~0_65_41_197 1073741820)) (<= (+ .cse20 .cse19 2147483642) .cse17) (<= 2 aux_mod_aux_div_v_ULTIMATE.start_main_~x~0_65_41_81)))) (<= |c_ULTIMATE.start_main_#t~post6| (div (+ .cse0 (* |c_ULTIMATE.start_main_#t~post6| (- 1)) 2147483641) 2)) (<= (+ |c_ULTIMATE.start_main_#t~post6| 1) (div (+ .cse0 2147483646) 2)) (< (+ (div (+ (* (div c_ULTIMATE.start_main_~x~0 (- 2)) (- 1)) (- 1073741818)) (- 2)) |c_ULTIMATE.start_main_#t~post6|) (+ (div (+ .cse0 (- 3)) 2) 1073741821)) (forall ((aux_div_aux_mod_v_ULTIMATE.start_main_~x~0_65_41_197 Int) (aux_div_aux_div_v_ULTIMATE.start_main_~x~0_65_41_81 Int) (aux_mod_aux_div_v_ULTIMATE.start_main_~x~0_65_41_81 Int)) (let ((.cse21 (* 2 aux_div_aux_mod_v_ULTIMATE.start_main_~x~0_65_41_197)) (.cse23 (* 2 aux_mod_aux_div_v_ULTIMATE.start_main_~x~0_65_41_81)) (.cse22 (* 4 aux_div_aux_div_v_ULTIMATE.start_main_~x~0_65_41_81))) (or (<= (+ .cse21 c_ULTIMATE.start_main_~x~0 |c_ULTIMATE.start_main_#t~post6| 6) 0) (< aux_mod_aux_div_v_ULTIMATE.start_main_~x~0_65_41_81 0) (< .cse22 (+ .cse21 .cse23 2147483639)) (< (+ c_ULTIMATE.start_main_~x~0 .cse22 |c_ULTIMATE.start_main_#t~post6|) (+ .cse23 2147483635)) (<= (+ .cse21 .cse23 2147483642) .cse22) (< (+ aux_div_aux_div_v_ULTIMATE.start_main_~x~0_65_41_81 |c_ULTIMATE.start_main_#t~post6|) (+ aux_div_aux_mod_v_ULTIMATE.start_main_~x~0_65_41_197 1073741820)) (<= 2 aux_mod_aux_div_v_ULTIMATE.start_main_~x~0_65_41_81)))) (forall ((aux_div_aux_mod_v_ULTIMATE.start_main_~x~0_65_41_197 Int) (aux_div_aux_div_v_ULTIMATE.start_main_~x~0_65_41_81 Int) (aux_mod_aux_div_v_ULTIMATE.start_main_~x~0_65_41_81 Int)) (let ((.cse25 (* 2 c_ULTIMATE.start_main_~y~0)) (.cse24 (* 2 aux_div_aux_mod_v_ULTIMATE.start_main_~x~0_65_41_197)) (.cse27 (* 2 aux_mod_aux_div_v_ULTIMATE.start_main_~x~0_65_41_81)) (.cse26 (* 4 aux_div_aux_div_v_ULTIMATE.start_main_~x~0_65_41_81))) (or (<= (+ .cse24 c_ULTIMATE.start_main_~x~0 .cse25 6) 0) (< aux_mod_aux_div_v_ULTIMATE.start_main_~x~0_65_41_81 0) (< .cse26 (+ .cse24 .cse27 2147483639)) (< (+ c_ULTIMATE.start_main_~y~0 aux_div_aux_div_v_ULTIMATE.start_main_~x~0_65_41_81) (+ aux_div_aux_mod_v_ULTIMATE.start_main_~x~0_65_41_197 1073741820)) (< (+ c_ULTIMATE.start_main_~x~0 .cse25 .cse26) (+ .cse27 2147483635)) (<= (+ .cse24 .cse27 2147483642) .cse26) (<= 2 aux_mod_aux_div_v_ULTIMATE.start_main_~x~0_65_41_81)))) (<= c_ULTIMATE.start_main_~y~0 (div (+ .cse0 (* c_ULTIMATE.start_main_~y~0 (- 1)) 2147483644) 2)))) is different from false [2020-11-30 02:17:30,757 WARN L193 SmtUtils]: Spent 40.82 s on a formula simplification. DAG size of input: 83 DAG size of output: 75 [2020-11-30 02:18:09,478 WARN L193 SmtUtils]: Spent 11.80 s on a formula simplification. DAG size of input: 78 DAG size of output: 49 [2020-11-30 02:18:21,153 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse4 (* c_ULTIMATE.start_main_~x~0 (- 1)))) (and (forall ((aux_div_aux_mod_v_ULTIMATE.start_main_~x~0_65_41_197 Int) (aux_div_aux_div_v_ULTIMATE.start_main_~x~0_65_41_81 Int) (aux_mod_aux_div_v_ULTIMATE.start_main_~x~0_65_41_81 Int) (v_ULTIMATE.start_main_~y~0_53 Int)) (let ((.cse3 (* 2 v_ULTIMATE.start_main_~y~0_53)) (.cse1 (* 2 aux_div_aux_mod_v_ULTIMATE.start_main_~x~0_65_41_197)) (.cse2 (* 2 aux_mod_aux_div_v_ULTIMATE.start_main_~x~0_65_41_81)) (.cse0 (* 4 aux_div_aux_div_v_ULTIMATE.start_main_~x~0_65_41_81))) (or (< aux_mod_aux_div_v_ULTIMATE.start_main_~x~0_65_41_81 0) (< (+ |c_ULTIMATE.start_main_#t~post6| 1) v_ULTIMATE.start_main_~y~0_53) (< .cse0 (+ .cse1 .cse2 2147483639)) (<= (+ .cse1 c_ULTIMATE.start_main_~x~0 .cse3 6) 0) (< (+ c_ULTIMATE.start_main_~x~0 .cse0 .cse3) (+ .cse2 2147483635)) (< (+ aux_div_aux_div_v_ULTIMATE.start_main_~x~0_65_41_81 v_ULTIMATE.start_main_~y~0_53) (+ aux_div_aux_mod_v_ULTIMATE.start_main_~x~0_65_41_197 1073741820)) (<= (+ .cse1 .cse2 2147483642) .cse0) (<= 2 aux_mod_aux_div_v_ULTIMATE.start_main_~x~0_65_41_81)))) (<= (+ c_ULTIMATE.start_main_~x~0 c_ULTIMATE.start_main_~y~0) 2147483647) (<= (+ c_ULTIMATE.start_main_~x~0 |c_ULTIMATE.start_main_#t~post6|) 2147483646) (<= |c_ULTIMATE.start_main_#t~post6| (div (+ .cse4 (* |c_ULTIMATE.start_main_#t~post6| (- 1)) 2147483641) 2)) (<= (+ |c_ULTIMATE.start_main_#t~post6| 1) (div (+ .cse4 2147483646) 2)) (< (+ (div (+ (* (div c_ULTIMATE.start_main_~x~0 (- 2)) (- 1)) (- 1073741818)) (- 2)) |c_ULTIMATE.start_main_#t~post6|) (+ (div (+ .cse4 (- 3)) 2) 1073741821)) (forall ((aux_div_aux_mod_v_ULTIMATE.start_main_~x~0_65_41_197 Int) (aux_div_aux_div_v_ULTIMATE.start_main_~x~0_65_41_81 Int) (aux_mod_aux_div_v_ULTIMATE.start_main_~x~0_65_41_81 Int)) (let ((.cse5 (* 2 aux_div_aux_mod_v_ULTIMATE.start_main_~x~0_65_41_197)) (.cse7 (* 2 aux_mod_aux_div_v_ULTIMATE.start_main_~x~0_65_41_81)) (.cse6 (* 4 aux_div_aux_div_v_ULTIMATE.start_main_~x~0_65_41_81))) (or (<= (+ .cse5 c_ULTIMATE.start_main_~x~0 |c_ULTIMATE.start_main_#t~post6| 6) 0) (< aux_mod_aux_div_v_ULTIMATE.start_main_~x~0_65_41_81 0) (< .cse6 (+ .cse5 .cse7 2147483639)) (< (+ c_ULTIMATE.start_main_~x~0 .cse6 |c_ULTIMATE.start_main_#t~post6|) (+ .cse7 2147483635)) (<= (+ .cse5 .cse7 2147483642) .cse6) (< (+ aux_div_aux_div_v_ULTIMATE.start_main_~x~0_65_41_81 |c_ULTIMATE.start_main_#t~post6|) (+ aux_div_aux_mod_v_ULTIMATE.start_main_~x~0_65_41_197 1073741820)) (<= 2 aux_mod_aux_div_v_ULTIMATE.start_main_~x~0_65_41_81)))) (<= (+ c_ULTIMATE.start_main_~x~0 (* 2 c_ULTIMATE.start_main_~y~0)) 2147483646) (forall ((aux_div_aux_mod_v_ULTIMATE.start_main_~x~0_65_41_197 Int) (aux_div_aux_div_v_ULTIMATE.start_main_~x~0_65_41_81 Int) (aux_mod_aux_div_v_ULTIMATE.start_main_~x~0_65_41_81 Int)) (let ((.cse9 (* 2 c_ULTIMATE.start_main_~y~0)) (.cse8 (* 2 aux_div_aux_mod_v_ULTIMATE.start_main_~x~0_65_41_197)) (.cse11 (* 2 aux_mod_aux_div_v_ULTIMATE.start_main_~x~0_65_41_81)) (.cse10 (* 4 aux_div_aux_div_v_ULTIMATE.start_main_~x~0_65_41_81))) (or (<= (+ .cse8 c_ULTIMATE.start_main_~x~0 .cse9 6) 0) (< aux_mod_aux_div_v_ULTIMATE.start_main_~x~0_65_41_81 0) (< .cse10 (+ .cse8 .cse11 2147483639)) (< (+ c_ULTIMATE.start_main_~y~0 aux_div_aux_div_v_ULTIMATE.start_main_~x~0_65_41_81) (+ aux_div_aux_mod_v_ULTIMATE.start_main_~x~0_65_41_197 1073741820)) (< (+ c_ULTIMATE.start_main_~x~0 .cse9 .cse10) (+ .cse11 2147483635)) (<= (+ .cse8 .cse11 2147483642) .cse10) (<= 2 aux_mod_aux_div_v_ULTIMATE.start_main_~x~0_65_41_81)))) (<= c_ULTIMATE.start_main_~y~0 (div (+ .cse4 (* c_ULTIMATE.start_main_~y~0 (- 1)) 2147483644) 2)))) is different from false [2020-11-30 02:19:29,623 WARN L193 SmtUtils]: Spent 11.74 s on a formula simplification. DAG size of input: 72 DAG size of output: 49 [2020-11-30 02:19:37,172 WARN L193 SmtUtils]: Spent 4.36 s on a formula simplification. DAG size of input: 66 DAG size of output: 46 [2020-11-30 02:19:59,469 WARN L193 SmtUtils]: Spent 4.48 s on a formula simplification. DAG size of input: 85 DAG size of output: 60 [2020-11-30 02:20:14,543 WARN L193 SmtUtils]: Spent 4.12 s on a formula simplification. DAG size of input: 54 DAG size of output: 45 [2020-11-30 02:20:18,567 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 31 [2020-11-30 02:20:19,046 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 39 [2020-11-30 02:20:37,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:20:37,867 INFO L93 Difference]: Finished difference Result 86 states and 93 transitions. [2020-11-30 02:20:37,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-11-30 02:20:37,872 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 39 [2020-11-30 02:20:37,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:20:37,873 INFO L225 Difference]: With dead ends: 86 [2020-11-30 02:20:37,873 INFO L226 Difference]: Without dead ends: 85 [2020-11-30 02:20:37,879 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1529 ImplicationChecksByTransitivity, 286.1s TimeCoverageRelationStatistics Valid=953, Invalid=4678, Unknown=77, NotChecked=298, Total=6006 [2020-11-30 02:20:37,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-11-30 02:20:37,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 81. [2020-11-30 02:20:37,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-11-30 02:20:37,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 85 transitions. [2020-11-30 02:20:37,895 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 85 transitions. Word has length 39 [2020-11-30 02:20:37,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:20:37,895 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 85 transitions. [2020-11-30 02:20:37,895 INFO L482 AbstractCegarLoop]: Interpolant automaton has 47 states. [2020-11-30 02:20:37,895 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 85 transitions. [2020-11-30 02:20:37,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-11-30 02:20:37,900 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:20:37,900 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 1, 1, 1] [2020-11-30 02:20:38,112 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 02:20:38,113 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 02:20:38,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:20:38,113 INFO L82 PathProgramCache]: Analyzing trace with hash 1121429886, now seen corresponding path program 3 times [2020-11-30 02:20:38,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:20:38,114 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575719110] [2020-11-30 02:20:38,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:20:38,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:20:39,062 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:20:39,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575719110] [2020-11-30 02:20:39,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1377515681] [2020-11-30 02:20:39,063 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c6c8ef05-bc88-46cb-81bc-d895aeec18fe/bin/utaipan/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 02:20:39,154 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-30 02:20:39,154 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 02:20:39,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 23 conjunts are in the unsatisfiable core [2020-11-30 02:20:39,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:20:39,192 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:20:39,194 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:20:41,273 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:20:41,273 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [657712381] [2020-11-30 02:20:41,276 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2020-11-30 02:20:41,276 INFO L166 IcfgInterpreter]: Building call graph [2020-11-30 02:20:41,276 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-30 02:20:41,276 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-30 02:20:41,277 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-30 02:20:41,753 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-30 02:20:42,040 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 25 [2020-11-30 02:20:42,583 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 49 [2020-11-30 02:20:43,441 WARN L193 SmtUtils]: Spent 651.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 54 [2020-11-30 02:20:44,313 WARN L193 SmtUtils]: Spent 642.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 55 [2020-11-30 02:20:44,561 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 24 [2020-11-30 02:20:44,827 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 26 [2020-11-30 02:20:44,830 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 02:20:44,830 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-11-30 02:20:44,830 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 45 [2020-11-30 02:20:44,830 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898378197] [2020-11-30 02:20:44,831 INFO L461 AbstractCegarLoop]: Interpolant automaton has 46 states [2020-11-30 02:20:44,831 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:20:44,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2020-11-30 02:20:44,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=568, Invalid=2084, Unknown=0, NotChecked=0, Total=2652 [2020-11-30 02:20:44,834 INFO L87 Difference]: Start difference. First operand 81 states and 85 transitions. Second operand 46 states. [2020-11-30 02:20:47,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:20:47,473 INFO L93 Difference]: Finished difference Result 127 states and 138 transitions. [2020-11-30 02:20:47,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-11-30 02:20:47,478 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 56 [2020-11-30 02:20:47,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:20:47,480 INFO L225 Difference]: With dead ends: 127 [2020-11-30 02:20:47,480 INFO L226 Difference]: Without dead ends: 126 [2020-11-30 02:20:47,482 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1279 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=1349, Invalid=4053, Unknown=0, NotChecked=0, Total=5402 [2020-11-30 02:20:47,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-11-30 02:20:47,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 118. [2020-11-30 02:20:47,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-11-30 02:20:47,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 125 transitions. [2020-11-30 02:20:47,502 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 125 transitions. Word has length 56 [2020-11-30 02:20:47,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:20:47,503 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 125 transitions. [2020-11-30 02:20:47,503 INFO L482 AbstractCegarLoop]: Interpolant automaton has 46 states. [2020-11-30 02:20:47,503 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 125 transitions. [2020-11-30 02:20:47,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-11-30 02:20:47,511 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:20:47,511 INFO L422 BasicCegarLoop]: trace histogram [16, 15, 15, 15, 15, 1, 1, 1] [2020-11-30 02:20:47,711 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 02:20:47,712 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 02:20:47,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:20:47,712 INFO L82 PathProgramCache]: Analyzing trace with hash -1650585414, now seen corresponding path program 4 times [2020-11-30 02:20:47,712 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:20:47,712 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497545766] [2020-11-30 02:20:47,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:20:47,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:20:49,908 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 0 proven. 555 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:20:49,908 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497545766] [2020-11-30 02:20:49,908 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1869119843] [2020-11-30 02:20:49,909 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c6c8ef05-bc88-46cb-81bc-d895aeec18fe/bin/utaipan/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 02:20:49,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:20:49,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 48 conjunts are in the unsatisfiable core [2020-11-30 02:20:49,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:20:56,013 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 0 proven. 555 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:20:56,014 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:27:37,472 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 52 [2020-11-30 02:30:07,320 WARN L195 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2020-11-30 02:30:07,320 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") [2020-11-30 02:30:07,320 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [671191625] [2020-11-30 02:30:07,322 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2020-11-30 02:30:07,322 INFO L166 IcfgInterpreter]: Building call graph [2020-11-30 02:30:07,323 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-30 02:30:07,323 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-30 02:30:07,323 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-30 02:30:07,328 FATAL L? ?]: Ignoring exception! de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) Connection to SMT solver broken at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:123) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.push(Scriptor.java:130) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.push(DiffWrapperScript.java:90) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.push(WrapperScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.push(HistoryRecordingScript.java:107) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:48) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.checkSatTerm(SmtUtils.java:229) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.isFalse(SymbolicTools.java:218) at de.uni_freiburg.informatik.ultimate.lib.sifa.domain.RelationCheckUtil.isEqBottom_SolverAlphaSolver(RelationCheckUtil.java:56) at de.uni_freiburg.informatik.ultimate.lib.sifa.domain.ExplicitValueDomain.isEqBottom(ExplicitValueDomain.java:73) at de.uni_freiburg.informatik.ultimate.lib.sifa.domain.CompoundDomain.isEqBottom(CompoundDomain.java:84) at de.uni_freiburg.informatik.ultimate.lib.sifa.domain.StatsWrapperDomain.isEqBottom(StatsWrapperDomain.java:69) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.earlyExitAfterStep(DagInterpreter.java:139) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:125) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:289) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:189) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:179) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:511) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:341) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:182) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:134) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: java.io.IOException: Stream closed at java.base/java.lang.ProcessBuilder$NullOutputStream.write(ProcessBuilder.java:442) at java.base/java.io.OutputStream.write(OutputStream.java:157) at java.base/java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:81) at java.base/java.io.BufferedOutputStream.flush(BufferedOutputStream.java:142) at java.base/sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:318) at java.base/sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:153) at java.base/java.io.OutputStreamWriter.flush(OutputStreamWriter.java:254) at java.base/java.io.BufferedWriter.flush(BufferedWriter.java:257) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:120) ... 42 more [2020-11-30 02:30:07,337 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-30 02:30:07,337 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-11-30 02:30:07,338 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890866211] [2020-11-30 02:30:07,338 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-11-30 02:30:07,338 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:30:07,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-11-30 02:30:07,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1161, Invalid=7459, Unknown=122, NotChecked=0, Total=8742 [2020-11-30 02:30:07,345 INFO L87 Difference]: Start difference. First operand 118 states and 125 transitions. Second operand 33 states. [2020-11-30 02:30:07,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 02:30:07,549 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175,9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 02:30:07,549 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@40ec52c0 at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:81) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.assertCodeBlock(IncrementalHoareTripleChecker.java:356) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.prepareAssertionStackAndAddTransition(IncrementalHoareTripleChecker.java:204) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.checkInternal(IncrementalHoareTripleChecker.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ProtectiveHoareTripleChecker.checkInternal(ProtectiveHoareTripleChecker.java:61) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.EfficientHoareTripleChecker.checkInternal(EfficientHoareTripleChecker.java:63) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.checkInternal(CachingHoareTripleChecker.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton$InternalSuccessorComputationHelper.computeSuccWithSolver(AbstractInterpolantAutomaton.java:357) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.addOtherSuccessors(DeterministicInterpolantAutomaton.java:197) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:77) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:233) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.internalSuccessors(TotalizeNwa.java:213) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.internalSuccessors(ComplementDeterministicNwa.java:121) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:216) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:208) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addInternalsAndSuccessors(NestedWordAutomatonReachableStates.java:1064) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:966) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:187) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:743) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:674) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:473) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:341) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:182) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:134) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2020-11-30 02:30:07,552 INFO L168 Benchmark]: Toolchain (without parser) took 893453.06 ms. Allocated memory was 90.2 MB in the beginning and 262.1 MB in the end (delta: 172.0 MB). Free memory was 59.8 MB in the beginning and 184.1 MB in the end (delta: -124.3 MB). Peak memory consumption was 47.6 MB. Max. memory is 16.1 GB. [2020-11-30 02:30:07,552 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 90.2 MB. Free memory was 49.7 MB in the beginning and 49.7 MB in the end (delta: 35.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:30:07,552 INFO L168 Benchmark]: CACSL2BoogieTranslator took 346.22 ms. Allocated memory is still 90.2 MB. Free memory was 59.6 MB in the beginning and 67.9 MB in the end (delta: -8.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 02:30:07,553 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.77 ms. Allocated memory is still 90.2 MB. Free memory was 67.9 MB in the beginning and 66.5 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:30:07,553 INFO L168 Benchmark]: Boogie Preprocessor took 25.36 ms. Allocated memory is still 90.2 MB. Free memory was 66.5 MB in the beginning and 65.5 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 02:30:07,554 INFO L168 Benchmark]: RCFGBuilder took 499.28 ms. Allocated memory is still 90.2 MB. Free memory was 65.5 MB in the beginning and 49.3 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-11-30 02:30:07,554 INFO L168 Benchmark]: TraceAbstraction took 892535.89 ms. Allocated memory was 90.2 MB in the beginning and 262.1 MB in the end (delta: 172.0 MB). Free memory was 49.0 MB in the beginning and 184.1 MB in the end (delta: -135.1 MB). Peak memory consumption was 38.1 MB. Max. memory is 16.1 GB. [2020-11-30 02:30:07,556 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 90.2 MB. Free memory was 49.7 MB in the beginning and 49.7 MB in the end (delta: 35.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 346.22 ms. Allocated memory is still 90.2 MB. Free memory was 59.6 MB in the beginning and 67.9 MB in the end (delta: -8.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 37.77 ms. Allocated memory is still 90.2 MB. Free memory was 67.9 MB in the beginning and 66.5 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 25.36 ms. Allocated memory is still 90.2 MB. Free memory was 66.5 MB in the beginning and 65.5 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 499.28 ms. Allocated memory is still 90.2 MB. Free memory was 65.5 MB in the beginning and 49.3 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 892535.89 ms. Allocated memory was 90.2 MB in the beginning and 262.1 MB in the end (delta: 172.0 MB). Free memory was 49.0 MB in the beginning and 184.1 MB in the end (delta: -135.1 MB). Peak memory consumption was 38.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@40ec52c0 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@40ec52c0: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:81) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...