./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-numeric/Binomial.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_7736d363-c414-4f6e-979d-d976bdb8ded9/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_7736d363-c414-4f6e-979d-d976bdb8ded9/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_7736d363-c414-4f6e-979d-d976bdb8ded9/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_7736d363-c414-4f6e-979d-d976bdb8ded9/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-numeric/Binomial.c -s /tmp/vcloud-vcloud-master/worker/run_dir_7736d363-c414-4f6e-979d-d976bdb8ded9/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_7736d363-c414-4f6e-979d-d976bdb8ded9/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 64bit --witnessprinter.graph.data.programhash 7271d13f0b7b365fd7ecc81e9b65f9e103181ef3 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis No suitable file found in config dir /tmp/vcloud-vcloud-master/worker/run_dir_7736d363-c414-4f6e-979d-d976bdb8ded9/bin/utaipan/config using search string *Overflow*64bit*_Bitvector*.epf No suitable settings file found using Overflow*64bit*_Bitvector ERROR: UNSUPPORTED PROPERTY Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-03 12:30:17,365 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-03 12:30:17,367 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-03 12:30:17,413 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-03 12:30:17,446 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-03 12:30:17,448 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-03 12:30:17,449 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-03 12:30:17,452 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-03 12:30:17,455 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-03 12:30:17,456 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-03 12:30:17,458 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-03 12:30:17,460 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-03 12:30:17,460 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-03 12:30:17,462 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-03 12:30:17,469 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-03 12:30:17,473 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-03 12:30:17,475 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-03 12:30:17,483 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-03 12:30:17,487 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-03 12:30:17,490 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-03 12:30:17,492 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-03 12:30:17,494 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-03 12:30:17,496 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-03 12:30:17,497 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-03 12:30:17,501 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-03 12:30:17,502 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-03 12:30:17,502 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-03 12:30:17,503 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-03 12:30:17,504 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-03 12:30:17,505 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-03 12:30:17,506 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-03 12:30:17,507 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-03 12:30:17,508 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-03 12:30:17,509 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-03 12:30:17,510 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-03 12:30:17,511 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-03 12:30:17,512 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-03 12:30:17,512 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-03 12:30:17,513 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-03 12:30:17,514 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-03 12:30:17,519 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-03 12:30:17,520 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_7736d363-c414-4f6e-979d-d976bdb8ded9/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf [2020-12-03 12:30:17,559 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-03 12:30:17,559 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-03 12:30:17,560 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-03 12:30:17,561 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-03 12:30:17,561 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-03 12:30:17,561 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-03 12:30:17,561 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-03 12:30:17,562 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-03 12:30:17,562 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-03 12:30:17,562 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-03 12:30:17,562 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-03 12:30:17,563 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-03 12:30:17,563 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-03 12:30:17,563 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-03 12:30:17,564 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-03 12:30:17,564 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-03 12:30:17,565 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-03 12:30:17,565 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-03 12:30:17,565 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-03 12:30:17,565 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-03 12:30:17,566 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-03 12:30:17,566 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-03 12:30:17,566 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-12-03 12:30:17,566 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-03 12:30:17,567 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-03 12:30:17,567 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-03 12:30:17,567 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-03 12:30:17,568 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-03 12:30:17,568 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-03 12:30:17,568 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-03 12:30:17,568 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-03 12:30:17,569 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-03 12:30:17,569 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-03 12:30:17,569 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-03 12:30:17,569 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-03 12:30:17,570 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-03 12:30:17,570 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-03 12:30:17,570 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_7736d363-c414-4f6e-979d-d976bdb8ded9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_7736d363-c414-4f6e-979d-d976bdb8ded9/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7271d13f0b7b365fd7ecc81e9b65f9e103181ef3 [2020-12-03 12:30:17,821 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-03 12:30:17,845 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-03 12:30:17,850 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-03 12:30:17,851 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-03 12:30:17,852 INFO L275 PluginConnector]: CDTParser initialized [2020-12-03 12:30:17,853 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_7736d363-c414-4f6e-979d-d976bdb8ded9/bin/utaipan/../../sv-benchmarks/c/termination-numeric/Binomial.c [2020-12-03 12:30:17,951 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7736d363-c414-4f6e-979d-d976bdb8ded9/bin/utaipan/data/3115c43af/2087836b6005424a8536c2202e645c4d/FLAGc8a299839 [2020-12-03 12:30:18,339 INFO L306 CDTParser]: Found 1 translation units. [2020-12-03 12:30:18,340 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_7736d363-c414-4f6e-979d-d976bdb8ded9/sv-benchmarks/c/termination-numeric/Binomial.c [2020-12-03 12:30:18,345 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7736d363-c414-4f6e-979d-d976bdb8ded9/bin/utaipan/data/3115c43af/2087836b6005424a8536c2202e645c4d/FLAGc8a299839 [2020-12-03 12:30:18,760 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_7736d363-c414-4f6e-979d-d976bdb8ded9/bin/utaipan/data/3115c43af/2087836b6005424a8536c2202e645c4d [2020-12-03 12:30:18,763 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-03 12:30:18,764 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-03 12:30:18,766 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-03 12:30:18,766 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-03 12:30:18,770 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-03 12:30:18,771 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 12:30:18" (1/1) ... [2020-12-03 12:30:18,773 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69b500e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:30:18, skipping insertion in model container [2020-12-03 12:30:18,773 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 12:30:18" (1/1) ... [2020-12-03 12:30:18,783 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-03 12:30:18,799 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-03 12:30:18,971 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-03 12:30:18,987 INFO L203 MainTranslator]: Completed pre-run [2020-12-03 12:30:19,003 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-03 12:30:19,013 INFO L208 MainTranslator]: Completed translation [2020-12-03 12:30:19,014 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:30:19 WrapperNode [2020-12-03 12:30:19,014 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-03 12:30:19,015 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-03 12:30:19,016 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-03 12:30:19,016 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-03 12:30:19,022 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:30:19" (1/1) ... [2020-12-03 12:30:19,028 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:30:19" (1/1) ... [2020-12-03 12:30:19,055 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-03 12:30:19,056 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-03 12:30:19,057 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-03 12:30:19,057 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-03 12:30:19,065 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:30:19" (1/1) ... [2020-12-03 12:30:19,066 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:30:19" (1/1) ... [2020-12-03 12:30:19,068 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:30:19" (1/1) ... [2020-12-03 12:30:19,068 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:30:19" (1/1) ... [2020-12-03 12:30:19,072 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:30:19" (1/1) ... [2020-12-03 12:30:19,076 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:30:19" (1/1) ... [2020-12-03 12:30:19,078 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:30:19" (1/1) ... [2020-12-03 12:30:19,080 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-03 12:30:19,081 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-03 12:30:19,082 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-03 12:30:19,082 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-03 12:30:19,083 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:30:19" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7736d363-c414-4f6e-979d-d976bdb8ded9/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 [2020-12-03 12:30:19,167 INFO L130 BoogieDeclarations]: Found specification of procedure fact [2020-12-03 12:30:19,168 INFO L138 BoogieDeclarations]: Found implementation of procedure fact [2020-12-03 12:30:19,168 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-03 12:30:19,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-03 12:30:19,736 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-03 12:30:19,737 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2020-12-03 12:30:19,739 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 12:30:19 BoogieIcfgContainer [2020-12-03 12:30:19,739 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-03 12:30:19,741 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-03 12:30:19,742 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-03 12:30:19,746 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-03 12:30:19,746 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.12 12:30:18" (1/3) ... [2020-12-03 12:30:19,747 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74d070e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 12:30:19, skipping insertion in model container [2020-12-03 12:30:19,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:30:19" (2/3) ... [2020-12-03 12:30:19,748 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74d070e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 12:30:19, skipping insertion in model container [2020-12-03 12:30:19,748 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 12:30:19" (3/3) ... [2020-12-03 12:30:19,749 INFO L111 eAbstractionObserver]: Analyzing ICFG Binomial.c [2020-12-03 12:30:19,764 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-03 12:30:19,768 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 20 error locations. [2020-12-03 12:30:19,780 INFO L253 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2020-12-03 12:30:19,817 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-03 12:30:19,817 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-03 12:30:19,817 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-03 12:30:19,818 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-03 12:30:19,818 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-03 12:30:19,819 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-03 12:30:19,819 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-03 12:30:19,819 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-03 12:30:19,849 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states. [2020-12-03 12:30:19,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-03 12:30:19,853 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:30:19,854 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-03 12:30:19,855 INFO L429 AbstractCegarLoop]: === Iteration 1 === [factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-03 12:30:19,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:30:19,862 INFO L82 PathProgramCache]: Analyzing trace with hash 1395358707, now seen corresponding path program 1 times [2020-12-03 12:30:19,868 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:30:19,869 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074544089] [2020-12-03 12:30:19,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:30:19,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:30:20,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 12:30:20,015 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074544089] [2020-12-03 12:30:20,016 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:30:20,016 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-03 12:30:20,017 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446233241] [2020-12-03 12:30:20,021 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-03 12:30:20,021 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:30:20,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-03 12:30:20,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-03 12:30:20,037 INFO L87 Difference]: Start difference. First operand 67 states. Second operand 4 states. [2020-12-03 12:30:20,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:30:20,132 INFO L93 Difference]: Finished difference Result 134 states and 154 transitions. [2020-12-03 12:30:20,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-03 12:30:20,134 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-12-03 12:30:20,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:30:20,142 INFO L225 Difference]: With dead ends: 134 [2020-12-03 12:30:20,143 INFO L226 Difference]: Without dead ends: 66 [2020-12-03 12:30:20,147 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-03 12:30:20,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-12-03 12:30:20,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-12-03 12:30:20,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-12-03 12:30:20,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 75 transitions. [2020-12-03 12:30:20,195 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 75 transitions. Word has length 6 [2020-12-03 12:30:20,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:30:20,196 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 75 transitions. [2020-12-03 12:30:20,196 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-03 12:30:20,196 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 75 transitions. [2020-12-03 12:30:20,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-03 12:30:20,197 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:30:20,198 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 12:30:20,198 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-03 12:30:20,198 INFO L429 AbstractCegarLoop]: === Iteration 2 === [factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-03 12:30:20,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:30:20,200 INFO L82 PathProgramCache]: Analyzing trace with hash 154399188, now seen corresponding path program 1 times [2020-12-03 12:30:20,200 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:30:20,201 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250334334] [2020-12-03 12:30:20,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:30:20,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:30:20,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 12:30:20,237 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250334334] [2020-12-03 12:30:20,238 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:30:20,238 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-03 12:30:20,238 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168252815] [2020-12-03 12:30:20,240 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-03 12:30:20,240 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:30:20,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-03 12:30:20,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-03 12:30:20,242 INFO L87 Difference]: Start difference. First operand 66 states and 75 transitions. Second operand 4 states. [2020-12-03 12:30:20,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:30:20,350 INFO L93 Difference]: Finished difference Result 189 states and 216 transitions. [2020-12-03 12:30:20,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-03 12:30:20,351 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-12-03 12:30:20,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:30:20,354 INFO L225 Difference]: With dead ends: 189 [2020-12-03 12:30:20,354 INFO L226 Difference]: Without dead ends: 126 [2020-12-03 12:30:20,356 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-03 12:30:20,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-12-03 12:30:20,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 69. [2020-12-03 12:30:20,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-12-03 12:30:20,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 78 transitions. [2020-12-03 12:30:20,375 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 78 transitions. Word has length 10 [2020-12-03 12:30:20,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:30:20,375 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 78 transitions. [2020-12-03 12:30:20,376 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-03 12:30:20,376 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 78 transitions. [2020-12-03 12:30:20,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-03 12:30:20,376 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:30:20,377 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 12:30:20,377 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-03 12:30:20,377 INFO L429 AbstractCegarLoop]: === Iteration 3 === [factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-03 12:30:20,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:30:20,379 INFO L82 PathProgramCache]: Analyzing trace with hash 133902980, now seen corresponding path program 1 times [2020-12-03 12:30:20,379 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:30:20,379 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941306047] [2020-12-03 12:30:20,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:30:20,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:30:20,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 12:30:20,445 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941306047] [2020-12-03 12:30:20,446 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:30:20,446 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-03 12:30:20,446 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492586586] [2020-12-03 12:30:20,447 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-03 12:30:20,447 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:30:20,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-03 12:30:20,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-03 12:30:20,449 INFO L87 Difference]: Start difference. First operand 69 states and 78 transitions. Second operand 6 states. [2020-12-03 12:30:20,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:30:20,584 INFO L93 Difference]: Finished difference Result 199 states and 240 transitions. [2020-12-03 12:30:20,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-03 12:30:20,585 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-12-03 12:30:20,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:30:20,588 INFO L225 Difference]: With dead ends: 199 [2020-12-03 12:30:20,588 INFO L226 Difference]: Without dead ends: 136 [2020-12-03 12:30:20,590 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-12-03 12:30:20,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-12-03 12:30:20,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 102. [2020-12-03 12:30:20,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-12-03 12:30:20,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 132 transitions. [2020-12-03 12:30:20,614 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 132 transitions. Word has length 10 [2020-12-03 12:30:20,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:30:20,615 INFO L481 AbstractCegarLoop]: Abstraction has 102 states and 132 transitions. [2020-12-03 12:30:20,616 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-03 12:30:20,616 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 132 transitions. [2020-12-03 12:30:20,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-03 12:30:20,617 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:30:20,617 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 12:30:20,617 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-03 12:30:20,617 INFO L429 AbstractCegarLoop]: === Iteration 4 === [factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-03 12:30:20,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:30:20,618 INFO L82 PathProgramCache]: Analyzing trace with hash -2023579039, now seen corresponding path program 1 times [2020-12-03 12:30:20,618 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:30:20,619 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303215331] [2020-12-03 12:30:20,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:30:20,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:30:20,668 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 12:30:20,669 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303215331] [2020-12-03 12:30:20,669 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:30:20,669 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-03 12:30:20,670 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737465895] [2020-12-03 12:30:20,670 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-03 12:30:20,670 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:30:20,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-03 12:30:20,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-03 12:30:20,672 INFO L87 Difference]: Start difference. First operand 102 states and 132 transitions. Second operand 6 states. [2020-12-03 12:30:20,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:30:20,867 INFO L93 Difference]: Finished difference Result 272 states and 374 transitions. [2020-12-03 12:30:20,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-03 12:30:20,868 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-12-03 12:30:20,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:30:20,874 INFO L225 Difference]: With dead ends: 272 [2020-12-03 12:30:20,874 INFO L226 Difference]: Without dead ends: 176 [2020-12-03 12:30:20,880 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-12-03 12:30:20,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2020-12-03 12:30:20,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 116. [2020-12-03 12:30:20,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-12-03 12:30:20,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 152 transitions. [2020-12-03 12:30:20,922 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 152 transitions. Word has length 16 [2020-12-03 12:30:20,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:30:20,922 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 152 transitions. [2020-12-03 12:30:20,923 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-03 12:30:20,923 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 152 transitions. [2020-12-03 12:30:20,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-03 12:30:20,924 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:30:20,924 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 12:30:20,924 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-03 12:30:20,925 INFO L429 AbstractCegarLoop]: === Iteration 5 === [factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-03 12:30:20,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:30:20,927 INFO L82 PathProgramCache]: Analyzing trace with hash -282699610, now seen corresponding path program 1 times [2020-12-03 12:30:20,929 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:30:20,930 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030021431] [2020-12-03 12:30:20,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:30:20,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:30:21,027 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-03 12:30:21,028 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030021431] [2020-12-03 12:30:21,028 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:30:21,029 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-03 12:30:21,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821088364] [2020-12-03 12:30:21,030 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-03 12:30:21,030 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:30:21,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-03 12:30:21,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-03 12:30:21,032 INFO L87 Difference]: Start difference. First operand 116 states and 152 transitions. Second operand 5 states. [2020-12-03 12:30:21,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:30:21,180 INFO L93 Difference]: Finished difference Result 173 states and 199 transitions. [2020-12-03 12:30:21,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-03 12:30:21,182 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-12-03 12:30:21,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:30:21,184 INFO L225 Difference]: With dead ends: 173 [2020-12-03 12:30:21,184 INFO L226 Difference]: Without dead ends: 172 [2020-12-03 12:30:21,185 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-03 12:30:21,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-12-03 12:30:21,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 118. [2020-12-03 12:30:21,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-12-03 12:30:21,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 154 transitions. [2020-12-03 12:30:21,228 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 154 transitions. Word has length 19 [2020-12-03 12:30:21,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:30:21,229 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 154 transitions. [2020-12-03 12:30:21,229 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-03 12:30:21,229 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 154 transitions. [2020-12-03 12:30:21,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-03 12:30:21,231 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:30:21,231 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 12:30:21,231 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-03 12:30:21,232 INFO L429 AbstractCegarLoop]: === Iteration 6 === [factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-03 12:30:21,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:30:21,233 INFO L82 PathProgramCache]: Analyzing trace with hash -173753234, now seen corresponding path program 1 times [2020-12-03 12:30:21,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:30:21,234 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969109463] [2020-12-03 12:30:21,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:30:21,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:30:21,303 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-03 12:30:21,303 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969109463] [2020-12-03 12:30:21,304 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:30:21,305 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-03 12:30:21,305 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561417854] [2020-12-03 12:30:21,306 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-03 12:30:21,307 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:30:21,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-03 12:30:21,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-03 12:30:21,309 INFO L87 Difference]: Start difference. First operand 118 states and 154 transitions. Second operand 5 states. [2020-12-03 12:30:21,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:30:21,453 INFO L93 Difference]: Finished difference Result 144 states and 168 transitions. [2020-12-03 12:30:21,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-03 12:30:21,453 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-12-03 12:30:21,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:30:21,455 INFO L225 Difference]: With dead ends: 144 [2020-12-03 12:30:21,455 INFO L226 Difference]: Without dead ends: 142 [2020-12-03 12:30:21,456 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-03 12:30:21,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-12-03 12:30:21,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 116. [2020-12-03 12:30:21,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-12-03 12:30:21,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 150 transitions. [2020-12-03 12:30:21,468 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 150 transitions. Word has length 20 [2020-12-03 12:30:21,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:30:21,469 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 150 transitions. [2020-12-03 12:30:21,469 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-03 12:30:21,469 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 150 transitions. [2020-12-03 12:30:21,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-03 12:30:21,470 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:30:21,470 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 12:30:21,470 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-03 12:30:21,471 INFO L429 AbstractCegarLoop]: === Iteration 7 === [factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-03 12:30:21,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:30:21,471 INFO L82 PathProgramCache]: Analyzing trace with hash -482951234, now seen corresponding path program 1 times [2020-12-03 12:30:21,471 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:30:21,472 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16842201] [2020-12-03 12:30:21,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:30:21,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:30:21,528 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-03 12:30:21,529 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16842201] [2020-12-03 12:30:21,529 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:30:21,529 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-03 12:30:21,529 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319621398] [2020-12-03 12:30:21,529 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-03 12:30:21,529 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:30:21,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-03 12:30:21,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-03 12:30:21,530 INFO L87 Difference]: Start difference. First operand 116 states and 150 transitions. Second operand 7 states. [2020-12-03 12:30:21,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:30:21,732 INFO L93 Difference]: Finished difference Result 278 states and 350 transitions. [2020-12-03 12:30:21,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-03 12:30:21,732 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2020-12-03 12:30:21,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:30:21,736 INFO L225 Difference]: With dead ends: 278 [2020-12-03 12:30:21,737 INFO L226 Difference]: Without dead ends: 173 [2020-12-03 12:30:21,738 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-12-03 12:30:21,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2020-12-03 12:30:21,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 122. [2020-12-03 12:30:21,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-12-03 12:30:21,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 156 transitions. [2020-12-03 12:30:21,758 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 156 transitions. Word has length 24 [2020-12-03 12:30:21,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:30:21,762 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 156 transitions. [2020-12-03 12:30:21,762 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-03 12:30:21,762 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 156 transitions. [2020-12-03 12:30:21,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-03 12:30:21,763 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:30:21,763 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 12:30:21,763 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-03 12:30:21,764 INFO L429 AbstractCegarLoop]: === Iteration 8 === [factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-03 12:30:21,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:30:21,764 INFO L82 PathProgramCache]: Analyzing trace with hash 539716203, now seen corresponding path program 1 times [2020-12-03 12:30:21,764 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:30:21,765 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997297187] [2020-12-03 12:30:21,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:30:21,798 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-03 12:30:21,799 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1263005434] [2020-12-03 12:30:21,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7736d363-c414-4f6e-979d-d976bdb8ded9/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 [2020-12-03 12:30:21,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:30:21,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-03 12:30:21,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-03 12:30:21,956 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-03 12:30:21,957 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-03 12:30:22,080 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997297187] [2020-12-03 12:30:22,081 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-03 12:30:22,081 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1263005434] [2020-12-03 12:30:22,081 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: cannot handle proper monomial [2020-12-03 12:30:22,081 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1107971072] [2020-12-03 12:30:22,114 INFO L159 IcfgInterpreter]: Started Sifa with 20 locations of interest [2020-12-03 12:30:22,114 INFO L166 IcfgInterpreter]: Building call graph [2020-12-03 12:30:22,120 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-03 12:30:22,125 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-03 12:30:22,126 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-03 12:30:22,672 INFO L197 IcfgInterpreter]: Interpreting procedure fact with input of size 6 for LOIs [2020-12-03 12:30:22,674 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-03 12:30:23,099 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 33 [2020-12-03 12:30:23,314 WARN L197 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 36 [2020-12-03 12:30:23,633 WARN L197 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 38 [2020-12-03 12:30:23,679 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:30:23,680 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-12-03 12:30:23,680 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270588220] [2020-12-03 12:30:23,681 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-03 12:30:23,681 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:30:23,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-03 12:30:23,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2020-12-03 12:30:23,682 INFO L87 Difference]: Start difference. First operand 122 states and 156 transitions. Second operand 13 states. [2020-12-03 12:30:23,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:30:23,961 INFO L93 Difference]: Finished difference Result 160 states and 180 transitions. [2020-12-03 12:30:23,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-03 12:30:23,962 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 27 [2020-12-03 12:30:23,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:30:23,963 INFO L225 Difference]: With dead ends: 160 [2020-12-03 12:30:23,963 INFO L226 Difference]: Without dead ends: 156 [2020-12-03 12:30:23,964 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 33 SyntacticMatches, 7 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2020-12-03 12:30:23,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-12-03 12:30:23,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 135. [2020-12-03 12:30:23,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-12-03 12:30:23,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 167 transitions. [2020-12-03 12:30:23,978 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 167 transitions. Word has length 27 [2020-12-03 12:30:23,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:30:23,978 INFO L481 AbstractCegarLoop]: Abstraction has 135 states and 167 transitions. [2020-12-03 12:30:23,978 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-03 12:30:23,978 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 167 transitions. [2020-12-03 12:30:23,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-03 12:30:23,979 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:30:23,979 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 12:30:24,194 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2020-12-03 12:30:24,195 INFO L429 AbstractCegarLoop]: === Iteration 9 === [factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-03 12:30:24,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:30:24,195 INFO L82 PathProgramCache]: Analyzing trace with hash -534920370, now seen corresponding path program 1 times [2020-12-03 12:30:24,195 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:30:24,196 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121653786] [2020-12-03 12:30:24,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:30:24,204 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-03 12:30:24,204 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2057856715] [2020-12-03 12:30:24,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7736d363-c414-4f6e-979d-d976bdb8ded9/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2020-12-03 12:30:24,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:30:24,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 3 conjunts are in the unsatisfiable core Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-03 12:30:24,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-03 12:30:24,325 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-12-03 12:30:24,326 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-03 12:30:24,365 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-12-03 12:30:24,366 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121653786] [2020-12-03 12:30:24,366 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-03 12:30:24,366 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2057856715] [2020-12-03 12:30:24,367 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:30:24,367 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-12-03 12:30:24,367 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093923947] [2020-12-03 12:30:24,368 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-03 12:30:24,368 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:30:24,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-03 12:30:24,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-03 12:30:24,369 INFO L87 Difference]: Start difference. First operand 135 states and 167 transitions. Second operand 6 states. [2020-12-03 12:30:24,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:30:24,468 INFO L93 Difference]: Finished difference Result 245 states and 310 transitions. [2020-12-03 12:30:24,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-03 12:30:24,469 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 32 [2020-12-03 12:30:24,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:30:24,471 INFO L225 Difference]: With dead ends: 245 [2020-12-03 12:30:24,472 INFO L226 Difference]: Without dead ends: 244 [2020-12-03 12:30:24,472 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-12-03 12:30:24,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2020-12-03 12:30:24,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 215. [2020-12-03 12:30:24,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2020-12-03 12:30:24,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 297 transitions. [2020-12-03 12:30:24,497 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 297 transitions. Word has length 32 [2020-12-03 12:30:24,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:30:24,497 INFO L481 AbstractCegarLoop]: Abstraction has 215 states and 297 transitions. [2020-12-03 12:30:24,497 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-03 12:30:24,497 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 297 transitions. [2020-12-03 12:30:24,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-03 12:30:24,498 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:30:24,499 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 12:30:24,714 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-03 12:30:24,715 INFO L429 AbstractCegarLoop]: === Iteration 10 === [factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-03 12:30:24,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:30:24,715 INFO L82 PathProgramCache]: Analyzing trace with hash 597337838, now seen corresponding path program 1 times [2020-12-03 12:30:24,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:30:24,716 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968321826] [2020-12-03 12:30:24,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:30:24,730 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-03 12:30:24,731 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1703766118] [2020-12-03 12:30:24,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7736d363-c414-4f6e-979d-d976bdb8ded9/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 [2020-12-03 12:30:24,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:30:24,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-03 12:30:24,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-03 12:30:24,820 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-12-03 12:30:24,821 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-03 12:30:24,884 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-12-03 12:30:24,884 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968321826] [2020-12-03 12:30:24,885 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-03 12:30:24,885 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1703766118] [2020-12-03 12:30:24,885 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:30:24,885 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-12-03 12:30:24,885 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169024978] [2020-12-03 12:30:24,887 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-03 12:30:24,887 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:30:24,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-03 12:30:24,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-03 12:30:24,889 INFO L87 Difference]: Start difference. First operand 215 states and 297 transitions. Second operand 6 states. [2020-12-03 12:30:24,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:30:24,931 INFO L93 Difference]: Finished difference Result 215 states and 297 transitions. [2020-12-03 12:30:24,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-03 12:30:24,932 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2020-12-03 12:30:24,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:30:24,942 INFO L225 Difference]: With dead ends: 215 [2020-12-03 12:30:24,943 INFO L226 Difference]: Without dead ends: 214 [2020-12-03 12:30:24,943 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-03 12:30:24,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-12-03 12:30:24,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2020-12-03 12:30:24,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-12-03 12:30:24,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 293 transitions. [2020-12-03 12:30:24,972 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 293 transitions. Word has length 33 [2020-12-03 12:30:24,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:30:24,975 INFO L481 AbstractCegarLoop]: Abstraction has 214 states and 293 transitions. [2020-12-03 12:30:24,976 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-03 12:30:24,976 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 293 transitions. [2020-12-03 12:30:24,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-12-03 12:30:24,983 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:30:24,983 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 12:30:25,198 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-03 12:30:25,199 INFO L429 AbstractCegarLoop]: === Iteration 11 === [factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-03 12:30:25,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:30:25,199 INFO L82 PathProgramCache]: Analyzing trace with hash -1483950380, now seen corresponding path program 1 times [2020-12-03 12:30:25,199 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:30:25,200 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522511590] [2020-12-03 12:30:25,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:30:25,211 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-03 12:30:25,214 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [380621500] [2020-12-03 12:30:25,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7736d363-c414-4f6e-979d-d976bdb8ded9/bin/utaipan/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2020-12-03 12:30:25,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-03 12:30:25,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-03 12:30:25,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-03 12:30:25,315 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-12-03 12:30:25,315 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-03 12:30:25,363 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-12-03 12:30:25,364 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522511590] [2020-12-03 12:30:25,364 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-03 12:30:25,368 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [380621500] [2020-12-03 12:30:25,368 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:30:25,369 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-12-03 12:30:25,369 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760881015] [2020-12-03 12:30:25,370 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-03 12:30:25,370 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:30:25,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-03 12:30:25,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-03 12:30:25,373 INFO L87 Difference]: Start difference. First operand 214 states and 293 transitions. Second operand 6 states. [2020-12-03 12:30:25,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:30:25,477 INFO L93 Difference]: Finished difference Result 330 states and 442 transitions. [2020-12-03 12:30:25,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-03 12:30:25,478 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 35 [2020-12-03 12:30:25,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:30:25,483 INFO L225 Difference]: With dead ends: 330 [2020-12-03 12:30:25,483 INFO L226 Difference]: Without dead ends: 329 [2020-12-03 12:30:25,483 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-12-03 12:30:25,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2020-12-03 12:30:25,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 304. [2020-12-03 12:30:25,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 304 states. [2020-12-03 12:30:25,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 438 transitions. [2020-12-03 12:30:25,518 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 438 transitions. Word has length 35 [2020-12-03 12:30:25,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:30:25,519 INFO L481 AbstractCegarLoop]: Abstraction has 304 states and 438 transitions. [2020-12-03 12:30:25,519 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-03 12:30:25,519 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 438 transitions. [2020-12-03 12:30:25,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-12-03 12:30:25,520 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:30:25,521 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 12:30:25,746 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-03 12:30:25,747 INFO L429 AbstractCegarLoop]: === Iteration 12 === [factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-03 12:30:25,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:30:25,747 INFO L82 PathProgramCache]: Analyzing trace with hash 1242178608, now seen corresponding path program 1 times [2020-12-03 12:30:25,747 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:30:25,747 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527404015] [2020-12-03 12:30:25,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:30:25,761 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-03 12:30:25,761 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1115401772] [2020-12-03 12:30:25,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7736d363-c414-4f6e-979d-d976bdb8ded9/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 [2020-12-03 12:30:25,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:30:25,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-03 12:30:25,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-03 12:30:25,862 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-12-03 12:30:25,862 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-03 12:30:25,914 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-12-03 12:30:25,915 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527404015] [2020-12-03 12:30:25,918 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-03 12:30:25,918 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1115401772] [2020-12-03 12:30:25,919 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:30:25,919 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-12-03 12:30:25,919 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974814151] [2020-12-03 12:30:25,920 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-03 12:30:25,920 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:30:25,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-03 12:30:25,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-03 12:30:25,922 INFO L87 Difference]: Start difference. First operand 304 states and 438 transitions. Second operand 6 states. [2020-12-03 12:30:25,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:30:25,972 INFO L93 Difference]: Finished difference Result 304 states and 438 transitions. [2020-12-03 12:30:25,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-03 12:30:25,973 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 36 [2020-12-03 12:30:25,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:30:25,990 INFO L225 Difference]: With dead ends: 304 [2020-12-03 12:30:25,990 INFO L226 Difference]: Without dead ends: 303 [2020-12-03 12:30:25,991 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-03 12:30:25,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2020-12-03 12:30:26,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 303. [2020-12-03 12:30:26,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 303 states. [2020-12-03 12:30:26,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 436 transitions. [2020-12-03 12:30:26,021 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 436 transitions. Word has length 36 [2020-12-03 12:30:26,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:30:26,022 INFO L481 AbstractCegarLoop]: Abstraction has 303 states and 436 transitions. [2020-12-03 12:30:26,022 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-03 12:30:26,022 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 436 transitions. [2020-12-03 12:30:26,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-12-03 12:30:26,023 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:30:26,023 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 12:30:26,238 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2020-12-03 12:30:26,239 INFO L429 AbstractCegarLoop]: === Iteration 13 === [factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-03 12:30:26,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:30:26,239 INFO L82 PathProgramCache]: Analyzing trace with hash -2100636619, now seen corresponding path program 1 times [2020-12-03 12:30:26,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:30:26,239 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22993549] [2020-12-03 12:30:26,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:30:26,246 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-03 12:30:26,247 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1551635999] [2020-12-03 12:30:26,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7736d363-c414-4f6e-979d-d976bdb8ded9/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 [2020-12-03 12:30:26,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:30:26,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-03 12:30:26,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-03 12:30:26,380 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-12-03 12:30:26,380 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-03 12:30:26,492 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-12-03 12:30:26,493 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22993549] [2020-12-03 12:30:26,493 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-03 12:30:26,493 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1551635999] [2020-12-03 12:30:26,494 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1305332836] [2020-12-03 12:30:26,498 INFO L159 IcfgInterpreter]: Started Sifa with 28 locations of interest [2020-12-03 12:30:26,498 INFO L166 IcfgInterpreter]: Building call graph [2020-12-03 12:30:26,498 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-03 12:30:26,499 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-03 12:30:26,499 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-03 12:30:27,433 INFO L197 IcfgInterpreter]: Interpreting procedure fact with input of size 6 for LOIs [2020-12-03 12:30:27,436 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-03 12:30:27,693 WARN L197 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 35 [2020-12-03 12:30:27,889 WARN L197 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 42 [2020-12-03 12:30:28,064 WARN L197 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 29 [2020-12-03 12:30:28,348 WARN L197 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 34 [2020-12-03 12:30:28,560 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 36 [2020-12-03 12:30:28,871 WARN L197 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 38 [2020-12-03 12:30:29,433 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 33 [2020-12-03 12:30:29,676 WARN L197 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 30 [2020-12-03 12:30:29,712 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2020-12-03 12:30:29,712 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [7, 7] total 29 [2020-12-03 12:30:29,712 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905656754] [2020-12-03 12:30:29,713 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-12-03 12:30:29,713 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:30:29,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-12-03 12:30:29,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=683, Unknown=0, NotChecked=0, Total=870 [2020-12-03 12:30:29,714 INFO L87 Difference]: Start difference. First operand 303 states and 436 transitions. Second operand 18 states. [2020-12-03 12:30:30,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:30:30,225 INFO L93 Difference]: Finished difference Result 637 states and 925 transitions. [2020-12-03 12:30:30,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-12-03 12:30:30,225 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 39 [2020-12-03 12:30:30,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:30:30,228 INFO L225 Difference]: With dead ends: 637 [2020-12-03 12:30:30,229 INFO L226 Difference]: Without dead ends: 373 [2020-12-03 12:30:30,231 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 77 SyntacticMatches, 10 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 363 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=187, Invalid=683, Unknown=0, NotChecked=0, Total=870 [2020-12-03 12:30:30,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2020-12-03 12:30:30,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 331. [2020-12-03 12:30:30,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 331 states. [2020-12-03 12:30:30,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 464 transitions. [2020-12-03 12:30:30,267 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 464 transitions. Word has length 39 [2020-12-03 12:30:30,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:30:30,268 INFO L481 AbstractCegarLoop]: Abstraction has 331 states and 464 transitions. [2020-12-03 12:30:30,268 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-12-03 12:30:30,268 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 464 transitions. [2020-12-03 12:30:30,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-12-03 12:30:30,270 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:30:30,270 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 12:30:30,486 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-03 12:30:30,487 INFO L429 AbstractCegarLoop]: === Iteration 14 === [factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-03 12:30:30,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:30:30,487 INFO L82 PathProgramCache]: Analyzing trace with hash 1273784600, now seen corresponding path program 1 times [2020-12-03 12:30:30,487 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:30:30,487 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378870430] [2020-12-03 12:30:30,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:30:30,498 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-03 12:30:30,501 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1837651015] [2020-12-03 12:30:30,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7736d363-c414-4f6e-979d-d976bdb8ded9/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 [2020-12-03 12:30:30,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:30:30,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-03 12:30:30,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-03 12:30:30,682 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-12-03 12:30:30,682 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-03 12:30:30,781 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-12-03 12:30:30,781 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378870430] [2020-12-03 12:30:30,781 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-03 12:30:30,782 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1837651015] [2020-12-03 12:30:30,782 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [54197184] [2020-12-03 12:30:30,786 INFO L159 IcfgInterpreter]: Started Sifa with 30 locations of interest [2020-12-03 12:30:30,787 INFO L166 IcfgInterpreter]: Building call graph [2020-12-03 12:30:30,788 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-03 12:30:30,788 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-03 12:30:30,788 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-03 12:30:31,434 FATAL L? ?]: Ignoring exception! java.util.ConcurrentModificationException at java.base/java.util.HashMap.computeIfAbsent(HashMap.java:1134) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarize(FixpointLoopSummarizer.java:94) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretLoop(DagInterpreter.java:177) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:168) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) 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:138) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:345) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:198) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:150) 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) [2020-12-03 12:30:31,436 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-03 12:30:31,437 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2020-12-03 12:30:31,437 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553434857] [2020-12-03 12:30:31,438 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-03 12:30:31,438 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:30:31,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-03 12:30:31,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-12-03 12:30:31,440 INFO L87 Difference]: Start difference. First operand 331 states and 464 transitions. Second operand 13 states. [2020-12-03 12:30:31,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:30:31,843 INFO L93 Difference]: Finished difference Result 694 states and 955 transitions. [2020-12-03 12:30:31,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-12-03 12:30:31,843 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 43 [2020-12-03 12:30:31,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:30:31,847 INFO L225 Difference]: With dead ends: 694 [2020-12-03 12:30:31,847 INFO L226 Difference]: Without dead ends: 479 [2020-12-03 12:30:31,849 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=130, Invalid=422, Unknown=0, NotChecked=0, Total=552 [2020-12-03 12:30:31,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2020-12-03 12:30:31,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 356. [2020-12-03 12:30:31,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 356 states. [2020-12-03 12:30:31,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 492 transitions. [2020-12-03 12:30:31,880 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 492 transitions. Word has length 43 [2020-12-03 12:30:31,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:30:31,880 INFO L481 AbstractCegarLoop]: Abstraction has 356 states and 492 transitions. [2020-12-03 12:30:31,880 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-03 12:30:31,880 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 492 transitions. [2020-12-03 12:30:31,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-12-03 12:30:31,881 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:30:31,881 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 12:30:32,097 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable112 [2020-12-03 12:30:32,098 INFO L429 AbstractCegarLoop]: === Iteration 15 === [factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-03 12:30:32,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:30:32,098 INFO L82 PathProgramCache]: Analyzing trace with hash -1685891300, now seen corresponding path program 1 times [2020-12-03 12:30:32,098 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:30:32,098 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173109115] [2020-12-03 12:30:32,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:30:32,104 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-03 12:30:32,105 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [168388156] [2020-12-03 12:30:32,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7736d363-c414-4f6e-979d-d976bdb8ded9/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 [2020-12-03 12:30:32,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:30:32,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-03 12:30:32,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-03 12:30:32,251 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-12-03 12:30:32,251 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-03 12:30:32,296 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173109115] [2020-12-03 12:30:32,297 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-03 12:30:32,297 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [168388156] [2020-12-03 12:30:32,297 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: cannot handle proper monomial [2020-12-03 12:30:32,297 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [159145156] [2020-12-03 12:30:32,301 INFO L159 IcfgInterpreter]: Started Sifa with 32 locations of interest [2020-12-03 12:30:32,302 INFO L166 IcfgInterpreter]: Building call graph [2020-12-03 12:30:32,302 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) 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:138) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:345) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:198) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:150) 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) [2020-12-03 12:30:32,303 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:30:32,304 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-12-03 12:30:32,304 ERROR L205 FreeRefinementEngine]: Strategy SIFA_TAIPAN failed to provide any proof altough trace is infeasible [2020-12-03 12:30:32,304 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-03 12:30:32,534 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable158 [2020-12-03 12:30:32,559 WARN L254 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-12-03 12:30:32,559 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.12 12:30:32 BoogieIcfgContainer [2020-12-03 12:30:32,559 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-03 12:30:32,560 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-03 12:30:32,560 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-03 12:30:32,560 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-03 12:30:32,560 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 12:30:19" (3/4) ... [2020-12-03 12:30:32,563 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-03 12:30:32,563 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-03 12:30:32,563 INFO L168 Benchmark]: Toolchain (without parser) took 13798.74 ms. Allocated memory was 88.1 MB in the beginning and 243.3 MB in the end (delta: 155.2 MB). Free memory was 56.5 MB in the beginning and 179.9 MB in the end (delta: -123.4 MB). Peak memory consumption was 32.1 MB. Max. memory is 16.1 GB. [2020-12-03 12:30:32,564 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 88.1 MB. Free memory was 45.3 MB in the beginning and 45.3 MB in the end (delta: 31.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-03 12:30:32,564 INFO L168 Benchmark]: CACSL2BoogieTranslator took 248.59 ms. Allocated memory was 88.1 MB in the beginning and 115.3 MB in the end (delta: 27.3 MB). Free memory was 56.3 MB in the beginning and 93.6 MB in the end (delta: -37.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-03 12:30:32,564 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.21 ms. Allocated memory is still 115.3 MB. Free memory was 93.6 MB in the beginning and 92.2 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-03 12:30:32,565 INFO L168 Benchmark]: Boogie Preprocessor took 24.42 ms. Allocated memory is still 115.3 MB. Free memory was 92.2 MB in the beginning and 91.0 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-03 12:30:32,565 INFO L168 Benchmark]: RCFGBuilder took 658.16 ms. Allocated memory is still 115.3 MB. Free memory was 91.0 MB in the beginning and 69.4 MB in the end (delta: 21.6 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2020-12-03 12:30:32,565 INFO L168 Benchmark]: TraceAbstraction took 12817.82 ms. Allocated memory was 115.3 MB in the beginning and 243.3 MB in the end (delta: 127.9 MB). Free memory was 68.5 MB in the beginning and 179.9 MB in the end (delta: -111.4 MB). Peak memory consumption was 18.2 MB. Max. memory is 16.1 GB. [2020-12-03 12:30:32,566 INFO L168 Benchmark]: Witness Printer took 3.11 ms. Allocated memory is still 243.3 MB. Free memory is still 179.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-03 12:30:32,569 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 88.1 MB. Free memory was 45.3 MB in the beginning and 45.3 MB in the end (delta: 31.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 248.59 ms. Allocated memory was 88.1 MB in the beginning and 115.3 MB in the end (delta: 27.3 MB). Free memory was 56.3 MB in the beginning and 93.6 MB in the end (delta: -37.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 40.21 ms. Allocated memory is still 115.3 MB. Free memory was 93.6 MB in the beginning and 92.2 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 24.42 ms. Allocated memory is still 115.3 MB. Free memory was 92.2 MB in the beginning and 91.0 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 658.16 ms. Allocated memory is still 115.3 MB. Free memory was 91.0 MB in the beginning and 69.4 MB in the end (delta: 21.6 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 12817.82 ms. Allocated memory was 115.3 MB in the beginning and 243.3 MB in the end (delta: 127.9 MB). Free memory was 68.5 MB in the beginning and 179.9 MB in the end (delta: -111.4 MB). Peak memory consumption was 18.2 MB. Max. memory is 16.1 GB. * Witness Printer took 3.11 ms. Allocated memory is still 243.3 MB. Free memory is still 179.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 26]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L34] int x = __VERIFIER_nondet_int(); [L35] COND FALSE !(x < 0) [L37] int y = __VERIFIER_nondet_int(); [L38] COND FALSE !(y < 0) [L40] int z = __VERIFIER_nondet_int(); [L41] int n = 0; [L41] COND TRUE n <= x [L42] int k = 0; [L42] COND TRUE k <= x [L43] COND TRUE k <= n [L30] CALL, EXPR fact(n) [L25] COND TRUE n <= 0 [L25] return 1; [L30] RET, EXPR fact(n) [L30] CALL, EXPR fact(k) [L25] COND TRUE n <= 0 [L25] return 1; [L30] RET, EXPR fact(k) [L30] EXPR n - k [L30] CALL, EXPR fact(n - k) [L25] COND TRUE n <= 0 [L25] return 1; [L30] RET, EXPR fact(n - k) [L30] EXPR fact(k) * fact(n - k) [L30] EXPR fact(n) / (fact(k) * fact(n - k)) [L30] return fact(n) / (fact(k) * fact(n - k)); [L42] k++ [L42] COND TRUE k <= x [L43] COND FALSE !(k <= n) [L30] CALL fact(n) [L25] COND FALSE !(n <= 0) [L26] EXPR n - 1 [L26] CALL, EXPR fact(n - 1) [L25] COND TRUE n <= 0 [L25] return 1; [L26] RET, EXPR fact(n - 1) [L26] n * fact(n - 1) - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 67 locations, 20 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 12.7s, OverallIterations: 15, TraceHistogramMax: 5, AutomataDifference: 2.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1053 SDtfs, 1704 SDslu, 3270 SDs, 0 SdLazy, 1264 SolverSat, 302 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 588 GetRequests, 440 SyntacticMatches, 17 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 576 ImplicationChecksByTransitivity, 3.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=356occurred in iteration=14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 14 MinimizatonAttempts, 522 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 323 NumberOfCodeBlocks, 323 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 522 ConstructedInterpolants, 0 QuantifiedInterpolants, 41802 SizeOfPredicates, 14 NumberOfNonLiveVariables, 584 ConjunctsInSsa, 28 ConjunctsInUnsatCore, 19 InterpolantComputations, 15 PerfectInterpolantSequences, 197/204 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: OVERALL_TIME[ms]: 1501, ICFG_INTERPRETER_ENTERED_PROCEDURES: 4, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 55, DAG_INTERPRETER_EARLY_EXITS: 1, TOOLS_POST_APPLICATIONS: 60, TOOLS_POST_TIME[ms]: 198, TOOLS_POST_CALL_APPLICATIONS: 25, TOOLS_POST_CALL_TIME[ms]: 316, TOOLS_POST_RETURN_APPLICATIONS: 18, TOOLS_POST_RETURN_TIME[ms]: 121, TOOLS_QUANTIFIERELIM_APPLICATIONS: 103, TOOLS_QUANTIFIERELIM_TIME[ms]: 586, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 45, FLUID_QUERY_TIME[ms]: 7, FLUID_QUERIES: 143, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 24, DOMAIN_JOIN_TIME[ms]: 667, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME[ms]: 0, DOMAIN_WIDEN_APPLICATIONS: 0, DOMAIN_WIDEN_TIME[ms]: 0, DOMAIN_ISSUBSETEQ_APPLICATIONS: 1, DOMAIN_ISSUBSETEQ_TIME[ms]: 0, DOMAIN_ISBOTTOM_APPLICATIONS: 55, DOMAIN_ISBOTTOM_TIME[ms]: 61, LOOP_SUMMARIZER_APPLICATIONS: 1, LOOP_SUMMARIZER_CACHE_MISSES: 1, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 123, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 122, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 1, CALL_SUMMARIZER_APPLICATIONS: 18, CALL_SUMMARIZER_CACHE_MISSES: 2, CALL_SUMMARIZER_OVERALL_TIME[ms]: 8, CALL_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 8, PROCEDURE_GRAPH_BUILDER_TIME[ms]: 5, PATH_EXPR_TIME[ms]: 10, REGEX_TO_DAG_TIME[ms]: 6, DAG_COMPRESSION_TIME[ms]: 51, DAG_COMPRESSION_PROCESSED_NODES: 900, DAG_COMPRESSION_RETAINED_NODES: 152, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...