./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/bitvector/byte_add-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_9bd0f123-cac5-49dd-93e1-bf420db5422b/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_9bd0f123-cac5-49dd-93e1-bf420db5422b/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_9bd0f123-cac5-49dd-93e1-bf420db5422b/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_9bd0f123-cac5-49dd-93e1-bf420db5422b/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/byte_add-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_9bd0f123-cac5-49dd-93e1-bf420db5422b/bin/utaipan/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_9bd0f123-cac5-49dd-93e1-bf420db5422b/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 57155ec4d1c294d255486bcf60492b490ef9efa5 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis No suitable file found in config dir /tmp/vcloud-vcloud-master/worker/run_dir_9bd0f123-cac5-49dd-93e1-bf420db5422b/bin/utaipan/config using search string *Overflow*32bit*_Bitvector*.epf No suitable settings file found using Overflow*32bit*_Bitvector ERROR: UNSUPPORTED PROPERTY Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 01:43:10,265 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 01:43:10,268 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 01:43:10,339 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 01:43:10,340 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 01:43:10,346 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 01:43:10,350 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 01:43:10,360 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 01:43:10,363 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 01:43:10,364 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 01:43:10,366 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 01:43:10,367 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 01:43:10,368 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 01:43:10,370 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 01:43:10,372 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 01:43:10,374 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 01:43:10,375 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 01:43:10,376 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 01:43:10,379 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 01:43:10,382 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 01:43:10,388 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 01:43:10,390 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 01:43:10,393 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 01:43:10,394 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 01:43:10,403 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 01:43:10,407 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 01:43:10,408 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 01:43:10,409 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 01:43:10,412 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 01:43:10,413 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 01:43:10,414 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 01:43:10,416 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 01:43:10,418 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 01:43:10,419 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 01:43:10,421 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 01:43:10,421 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 01:43:10,422 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 01:43:10,423 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 01:43:10,423 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 01:43:10,425 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 01:43:10,426 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 01:43:10,433 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_9bd0f123-cac5-49dd-93e1-bf420db5422b/bin/utaipan/config/svcomp-Overflow-32bit-Taipan_Default.epf [2020-11-30 01:43:10,489 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 01:43:10,490 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 01:43:10,492 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-30 01:43:10,492 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-30 01:43:10,492 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-30 01:43:10,493 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-30 01:43:10,493 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-30 01:43:10,493 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-30 01:43:10,493 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-30 01:43:10,494 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-30 01:43:10,495 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-30 01:43:10,496 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-30 01:43:10,496 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-30 01:43:10,496 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-30 01:43:10,497 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-30 01:43:10,498 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 01:43:10,499 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 01:43:10,499 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-30 01:43:10,499 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 01:43:10,499 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 01:43:10,500 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 01:43:10,500 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 01:43:10,500 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 01:43:10,501 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 01:43:10,501 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-11-30 01:43:10,501 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 01:43:10,501 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 01:43:10,502 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 01:43:10,502 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 01:43:10,504 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 01:43:10,504 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 01:43:10,505 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 01:43:10,505 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 01:43:10,506 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 01:43:10,506 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 01:43:10,506 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 01:43:10,506 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-30 01:43:10,507 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 01:43:10,507 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 01:43:10,507 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 01:43:10,508 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 01:43:10,508 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_9bd0f123-cac5-49dd-93e1-bf420db5422b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_9bd0f123-cac5-49dd-93e1-bf420db5422b/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 57155ec4d1c294d255486bcf60492b490ef9efa5 [2020-11-30 01:43:10,856 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 01:43:10,883 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 01:43:10,887 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 01:43:10,888 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 01:43:10,889 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 01:43:10,891 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_9bd0f123-cac5-49dd-93e1-bf420db5422b/bin/utaipan/../../sv-benchmarks/c/bitvector/byte_add-2.i [2020-11-30 01:43:10,967 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9bd0f123-cac5-49dd-93e1-bf420db5422b/bin/utaipan/data/f9f7ea1c6/028b79d084cb41669356d1a6139fae20/FLAGda12b1fb1 [2020-11-30 01:43:11,590 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 01:43:11,591 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_9bd0f123-cac5-49dd-93e1-bf420db5422b/sv-benchmarks/c/bitvector/byte_add-2.i [2020-11-30 01:43:11,600 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9bd0f123-cac5-49dd-93e1-bf420db5422b/bin/utaipan/data/f9f7ea1c6/028b79d084cb41669356d1a6139fae20/FLAGda12b1fb1 [2020-11-30 01:43:11,893 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_9bd0f123-cac5-49dd-93e1-bf420db5422b/bin/utaipan/data/f9f7ea1c6/028b79d084cb41669356d1a6139fae20 [2020-11-30 01:43:11,896 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 01:43:11,898 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 01:43:11,900 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 01:43:11,901 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 01:43:11,905 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 01:43:11,906 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:43:11" (1/1) ... [2020-11-30 01:43:11,908 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e30a25a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:43:11, skipping insertion in model container [2020-11-30 01:43:11,908 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:43:11" (1/1) ... [2020-11-30 01:43:11,917 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 01:43:11,942 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 01:43:12,219 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:43:12,231 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 01:43:12,276 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:43:12,294 INFO L208 MainTranslator]: Completed translation [2020-11-30 01:43:12,294 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:43:12 WrapperNode [2020-11-30 01:43:12,295 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 01:43:12,296 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 01:43:12,296 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 01:43:12,297 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 01:43:12,307 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:43:12" (1/1) ... [2020-11-30 01:43:12,334 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:43:12" (1/1) ... [2020-11-30 01:43:12,367 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 01:43:12,368 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 01:43:12,368 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 01:43:12,369 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 01:43:12,379 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:43:12" (1/1) ... [2020-11-30 01:43:12,380 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:43:12" (1/1) ... [2020-11-30 01:43:12,383 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:43:12" (1/1) ... [2020-11-30 01:43:12,383 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:43:12" (1/1) ... [2020-11-30 01:43:12,390 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:43:12" (1/1) ... [2020-11-30 01:43:12,395 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:43:12" (1/1) ... [2020-11-30 01:43:12,398 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:43:12" (1/1) ... [2020-11-30 01:43:12,413 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 01:43:12,415 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 01:43:12,426 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 01:43:12,427 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 01:43:12,428 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:43:12" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9bd0f123-cac5-49dd-93e1-bf420db5422b/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 01:43:12,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 01:43:12,522 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 01:43:12,522 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 01:43:12,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 01:43:13,627 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 01:43:13,627 INFO L298 CfgBuilder]: Removed 12 assume(true) statements. [2020-11-30 01:43:13,630 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:43:13 BoogieIcfgContainer [2020-11-30 01:43:13,630 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 01:43:13,632 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 01:43:13,632 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 01:43:13,637 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 01:43:13,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 01:43:11" (1/3) ... [2020-11-30 01:43:13,638 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58e21c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:43:13, skipping insertion in model container [2020-11-30 01:43:13,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:43:12" (2/3) ... [2020-11-30 01:43:13,638 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58e21c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:43:13, skipping insertion in model container [2020-11-30 01:43:13,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:43:13" (3/3) ... [2020-11-30 01:43:13,641 INFO L111 eAbstractionObserver]: Analyzing ICFG byte_add-2.i [2020-11-30 01:43:13,654 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 01:43:13,659 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 38 error locations. [2020-11-30 01:43:13,673 INFO L253 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2020-11-30 01:43:13,719 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 01:43:13,719 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 01:43:13,719 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 01:43:13,719 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 01:43:13,720 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 01:43:13,720 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 01:43:13,720 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 01:43:13,720 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 01:43:13,747 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states. [2020-11-30 01:43:13,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-11-30 01:43:13,756 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:43:13,756 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-11-30 01:43:13,757 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr37ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 01:43:13,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:43:13,764 INFO L82 PathProgramCache]: Analyzing trace with hash 295188, now seen corresponding path program 1 times [2020-11-30 01:43:13,775 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:43:13,775 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117227660] [2020-11-30 01:43:13,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:43:13,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:43:13,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:43:13,985 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117227660] [2020-11-30 01:43:13,988 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:43:13,988 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-30 01:43:13,990 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476692998] [2020-11-30 01:43:13,994 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-30 01:43:13,995 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:43:14,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-30 01:43:14,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 01:43:14,018 INFO L87 Difference]: Start difference. First operand 99 states. Second operand 2 states. [2020-11-30 01:43:14,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:43:14,049 INFO L93 Difference]: Finished difference Result 99 states and 116 transitions. [2020-11-30 01:43:14,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 01:43:14,051 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 3 [2020-11-30 01:43:14,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:43:14,078 INFO L225 Difference]: With dead ends: 99 [2020-11-30 01:43:14,079 INFO L226 Difference]: Without dead ends: 60 [2020-11-30 01:43:14,082 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 01:43:14,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-11-30 01:43:14,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2020-11-30 01:43:14,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-11-30 01:43:14,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 77 transitions. [2020-11-30 01:43:14,137 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 77 transitions. Word has length 3 [2020-11-30 01:43:14,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:43:14,138 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 77 transitions. [2020-11-30 01:43:14,138 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-30 01:43:14,138 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 77 transitions. [2020-11-30 01:43:14,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-30 01:43:14,140 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:43:14,140 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:43:14,141 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 01:43:14,141 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr37ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 01:43:14,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:43:14,144 INFO L82 PathProgramCache]: Analyzing trace with hash -125523724, now seen corresponding path program 1 times [2020-11-30 01:43:14,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:43:14,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214385049] [2020-11-30 01:43:14,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:43:14,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:43:14,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:43:14,337 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214385049] [2020-11-30 01:43:14,337 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:43:14,337 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 01:43:14,338 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279118000] [2020-11-30 01:43:14,339 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 01:43:14,339 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:43:14,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 01:43:14,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 01:43:14,341 INFO L87 Difference]: Start difference. First operand 60 states and 77 transitions. Second operand 3 states. [2020-11-30 01:43:14,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:43:14,596 INFO L93 Difference]: Finished difference Result 120 states and 160 transitions. [2020-11-30 01:43:14,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 01:43:14,598 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-11-30 01:43:14,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:43:14,600 INFO L225 Difference]: With dead ends: 120 [2020-11-30 01:43:14,600 INFO L226 Difference]: Without dead ends: 81 [2020-11-30 01:43:14,601 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 01:43:14,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-11-30 01:43:14,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 76. [2020-11-30 01:43:14,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-11-30 01:43:14,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 96 transitions. [2020-11-30 01:43:14,620 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 96 transitions. Word has length 12 [2020-11-30 01:43:14,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:43:14,620 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 96 transitions. [2020-11-30 01:43:14,621 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 01:43:14,621 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 96 transitions. [2020-11-30 01:43:14,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-30 01:43:14,622 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:43:14,622 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:43:14,622 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 01:43:14,623 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr37ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 01:43:14,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:43:14,624 INFO L82 PathProgramCache]: Analyzing trace with hash 1894286807, now seen corresponding path program 1 times [2020-11-30 01:43:14,624 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:43:14,624 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163925904] [2020-11-30 01:43:14,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:43:14,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:43:14,745 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:43:14,745 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163925904] [2020-11-30 01:43:14,745 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1836700855] [2020-11-30 01:43:14,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9bd0f123-cac5-49dd-93e1-bf420db5422b/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:43:14,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:43:14,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-30 01:43:14,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:43:14,853 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:43:14,853 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:43:14,877 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:43:14,880 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [620331796] [2020-11-30 01:43:14,911 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2020-11-30 01:43:14,911 INFO L166 IcfgInterpreter]: Building call graph [2020-11-30 01:43:14,918 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-30 01:43:14,924 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-30 01:43:14,925 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-30 01:43:15,305 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-30 01:43:15,690 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 77 [2020-11-30 01:43:16,071 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 80 [2020-11-30 01:43:16,439 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 82 [2020-11-30 01:43:16,883 WARN L193 SmtUtils]: Spent 395.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 85 [2020-11-30 01:43:17,300 WARN L193 SmtUtils]: Spent 365.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 89 [2020-11-30 01:43:17,303 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2020-11-30 01:43:17,303 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4, 4, 4] total 12 [2020-11-30 01:43:17,304 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840721719] [2020-11-30 01:43:17,304 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-30 01:43:17,304 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:43:17,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-30 01:43:17,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-11-30 01:43:17,305 INFO L87 Difference]: Start difference. First operand 76 states and 96 transitions. Second operand 7 states. [2020-11-30 01:43:17,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:43:17,838 INFO L93 Difference]: Finished difference Result 245 states and 308 transitions. [2020-11-30 01:43:17,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-30 01:43:17,839 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-11-30 01:43:17,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:43:17,841 INFO L225 Difference]: With dead ends: 245 [2020-11-30 01:43:17,841 INFO L226 Difference]: Without dead ends: 198 [2020-11-30 01:43:17,842 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 37 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-11-30 01:43:17,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-11-30 01:43:17,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 88. [2020-11-30 01:43:17,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-11-30 01:43:17,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 109 transitions. [2020-11-30 01:43:17,858 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 109 transitions. Word has length 15 [2020-11-30 01:43:17,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:43:17,859 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 109 transitions. [2020-11-30 01:43:17,859 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-30 01:43:17,859 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 109 transitions. [2020-11-30 01:43:17,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-30 01:43:17,860 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:43:17,860 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:43:18,079 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-11-30 01:43:18,080 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr37ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 01:43:18,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:43:18,081 INFO L82 PathProgramCache]: Analyzing trace with hash -1423570021, now seen corresponding path program 1 times [2020-11-30 01:43:18,081 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:43:18,081 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799769725] [2020-11-30 01:43:18,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:43:18,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:43:18,183 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:43:18,184 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799769725] [2020-11-30 01:43:18,184 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [603128189] [2020-11-30 01:43:18,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9bd0f123-cac5-49dd-93e1-bf420db5422b/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:43:18,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:43:18,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-30 01:43:18,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:43:18,237 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:43:18,237 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:43:18,265 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:43:18,265 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1666937908] [2020-11-30 01:43:18,268 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2020-11-30 01:43:18,268 INFO L166 IcfgInterpreter]: Building call graph [2020-11-30 01:43:18,269 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-30 01:43:18,269 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-30 01:43:18,270 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-30 01:43:18,428 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-30 01:43:18,682 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 77 [2020-11-30 01:43:18,956 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 79 [2020-11-30 01:43:19,352 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 79 [2020-11-30 01:43:19,637 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 82 [2020-11-30 01:43:19,969 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 85 [2020-11-30 01:43:20,313 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 88 [2020-11-30 01:43:20,725 WARN L193 SmtUtils]: Spent 370.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 92 [2020-11-30 01:43:20,726 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2020-11-30 01:43:20,727 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4, 4, 4] total 14 [2020-11-30 01:43:20,727 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000570210] [2020-11-30 01:43:20,728 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-30 01:43:20,728 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:43:20,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-30 01:43:20,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2020-11-30 01:43:20,729 INFO L87 Difference]: Start difference. First operand 88 states and 109 transitions. Second operand 9 states. [2020-11-30 01:43:21,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:43:21,854 INFO L93 Difference]: Finished difference Result 321 states and 401 transitions. [2020-11-30 01:43:21,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-30 01:43:21,855 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 18 [2020-11-30 01:43:21,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:43:21,858 INFO L225 Difference]: With dead ends: 321 [2020-11-30 01:43:21,858 INFO L226 Difference]: Without dead ends: 274 [2020-11-30 01:43:21,859 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 44 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2020-11-30 01:43:21,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2020-11-30 01:43:21,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 88. [2020-11-30 01:43:21,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-11-30 01:43:21,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 109 transitions. [2020-11-30 01:43:21,886 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 109 transitions. Word has length 18 [2020-11-30 01:43:21,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:43:21,887 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 109 transitions. [2020-11-30 01:43:21,887 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-30 01:43:21,887 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 109 transitions. [2020-11-30 01:43:21,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-30 01:43:21,888 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:43:21,889 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:43:22,115 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:43:22,115 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr37ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 01:43:22,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:43:22,116 INFO L82 PathProgramCache]: Analyzing trace with hash -2138737962, now seen corresponding path program 1 times [2020-11-30 01:43:22,116 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:43:22,116 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017626461] [2020-11-30 01:43:22,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:43:22,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:43:22,250 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:43:22,251 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017626461] [2020-11-30 01:43:22,251 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1657983765] [2020-11-30 01:43:22,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9bd0f123-cac5-49dd-93e1-bf420db5422b/bin/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:43:22,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:43:22,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-30 01:43:22,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:43:22,350 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:43:22,350 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:43:22,374 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:43:22,375 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [178148176] [2020-11-30 01:43:22,378 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2020-11-30 01:43:22,378 INFO L166 IcfgInterpreter]: Building call graph [2020-11-30 01:43:22,379 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-30 01:43:22,379 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-30 01:43:22,379 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-30 01:43:22,626 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-30 01:43:22,900 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 77 [2020-11-30 01:43:23,136 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 80 [2020-11-30 01:43:23,412 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 82 [2020-11-30 01:43:23,751 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 84 [2020-11-30 01:43:24,037 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 85 [2020-11-30 01:43:24,404 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 88 [2020-11-30 01:43:24,774 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 92 [2020-11-30 01:43:24,775 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2020-11-30 01:43:24,776 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4, 4, 4] total 14 [2020-11-30 01:43:24,776 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308416205] [2020-11-30 01:43:24,776 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-30 01:43:24,777 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:43:24,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-30 01:43:24,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-11-30 01:43:24,778 INFO L87 Difference]: Start difference. First operand 88 states and 109 transitions. Second operand 9 states. [2020-11-30 01:43:25,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:43:25,703 INFO L93 Difference]: Finished difference Result 312 states and 387 transitions. [2020-11-30 01:43:25,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-30 01:43:25,705 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 18 [2020-11-30 01:43:25,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:43:25,707 INFO L225 Difference]: With dead ends: 312 [2020-11-30 01:43:25,707 INFO L226 Difference]: Without dead ends: 265 [2020-11-30 01:43:25,708 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 44 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-11-30 01:43:25,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2020-11-30 01:43:25,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 93. [2020-11-30 01:43:25,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-11-30 01:43:25,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 116 transitions. [2020-11-30 01:43:25,722 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 116 transitions. Word has length 18 [2020-11-30 01:43:25,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:43:25,723 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 116 transitions. [2020-11-30 01:43:25,723 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-30 01:43:25,723 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 116 transitions. [2020-11-30 01:43:25,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-30 01:43:25,727 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:43:25,728 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:43:25,947 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:43:25,947 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr37ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 01:43:25,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:43:25,948 INFO L82 PathProgramCache]: Analyzing trace with hash 1235076964, now seen corresponding path program 1 times [2020-11-30 01:43:25,948 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:43:25,948 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441092453] [2020-11-30 01:43:25,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:43:25,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:43:26,096 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:43:26,097 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441092453] [2020-11-30 01:43:26,097 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [752799308] [2020-11-30 01:43:26,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9bd0f123-cac5-49dd-93e1-bf420db5422b/bin/utaipan/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:43:26,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:43:26,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-30 01:43:26,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:43:26,162 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:43:26,162 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:43:26,181 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:43:26,182 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [281226164] [2020-11-30 01:43:26,185 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2020-11-30 01:43:26,185 INFO L166 IcfgInterpreter]: Building call graph [2020-11-30 01:43:26,186 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-30 01:43:26,186 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-30 01:43:26,186 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-30 01:43:26,397 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-30 01:43:26,617 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 77 [2020-11-30 01:43:26,972 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 79 [2020-11-30 01:43:27,324 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 79 [2020-11-30 01:43:27,589 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 81 [2020-11-30 01:43:27,840 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 80 [2020-11-30 01:43:28,891 WARN L193 SmtUtils]: Spent 998.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 83 [2020-11-30 01:43:29,350 WARN L193 SmtUtils]: Spent 376.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 86 [2020-11-30 01:43:32,021 WARN L193 SmtUtils]: Spent 2.59 s on a formula simplification. DAG size of input: 93 DAG size of output: 89 [2020-11-30 01:43:32,738 WARN L193 SmtUtils]: Spent 619.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 93 [2020-11-30 01:43:32,739 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2020-11-30 01:43:32,740 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [4, 4, 4] total 17 [2020-11-30 01:43:32,740 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349667973] [2020-11-30 01:43:32,740 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-30 01:43:32,740 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:43:32,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-30 01:43:32,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2020-11-30 01:43:32,741 INFO L87 Difference]: Start difference. First operand 93 states and 116 transitions. Second operand 11 states. [2020-11-30 01:43:34,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:43:34,153 INFO L93 Difference]: Finished difference Result 397 states and 494 transitions. [2020-11-30 01:43:34,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-30 01:43:34,159 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2020-11-30 01:43:34,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:43:34,162 INFO L225 Difference]: With dead ends: 397 [2020-11-30 01:43:34,162 INFO L226 Difference]: Without dead ends: 350 [2020-11-30 01:43:34,163 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 50 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2020-11-30 01:43:34,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2020-11-30 01:43:34,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 93. [2020-11-30 01:43:34,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-11-30 01:43:34,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 116 transitions. [2020-11-30 01:43:34,175 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 116 transitions. Word has length 21 [2020-11-30 01:43:34,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:43:34,177 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 116 transitions. [2020-11-30 01:43:34,177 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-30 01:43:34,177 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 116 transitions. [2020-11-30 01:43:34,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-30 01:43:34,178 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:43:34,179 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:43:34,387 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:43:34,387 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr37ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 01:43:34,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:43:34,388 INFO L82 PathProgramCache]: Analyzing trace with hash -34150766, now seen corresponding path program 1 times [2020-11-30 01:43:34,388 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:43:34,389 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402953302] [2020-11-30 01:43:34,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:43:34,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:43:34,462 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:43:34,462 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402953302] [2020-11-30 01:43:34,462 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2121338614] [2020-11-30 01:43:34,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9bd0f123-cac5-49dd-93e1-bf420db5422b/bin/utaipan/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:43:34,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:43:34,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-30 01:43:34,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:43:34,533 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:43:34,533 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:43:34,591 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:43:34,592 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [751252346] [2020-11-30 01:43:34,594 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2020-11-30 01:43:34,598 INFO L166 IcfgInterpreter]: Building call graph [2020-11-30 01:43:34,599 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-30 01:43:34,599 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-30 01:43:34,599 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-30 01:43:34,786 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-30 01:43:35,108 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 77 [2020-11-30 01:43:35,361 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 79 [2020-11-30 01:43:35,614 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 79 [2020-11-30 01:43:35,964 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 82 [2020-11-30 01:43:36,311 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 85 [2020-11-30 01:43:36,677 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 87 [2020-11-30 01:43:37,124 WARN L193 SmtUtils]: Spent 389.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 86 [2020-11-30 01:43:37,648 WARN L193 SmtUtils]: Spent 457.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 89 [2020-11-30 01:43:38,249 WARN L193 SmtUtils]: Spent 543.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 93 [2020-11-30 01:43:38,251 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2020-11-30 01:43:38,251 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [4, 4, 4] total 16 [2020-11-30 01:43:38,251 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015794636] [2020-11-30 01:43:38,252 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-30 01:43:38,252 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:43:38,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-30 01:43:38,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-11-30 01:43:38,253 INFO L87 Difference]: Start difference. First operand 93 states and 116 transitions. Second operand 11 states. [2020-11-30 01:43:39,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:43:39,390 INFO L93 Difference]: Finished difference Result 388 states and 480 transitions. [2020-11-30 01:43:39,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-30 01:43:39,391 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2020-11-30 01:43:39,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:43:39,394 INFO L225 Difference]: With dead ends: 388 [2020-11-30 01:43:39,394 INFO L226 Difference]: Without dead ends: 341 [2020-11-30 01:43:39,395 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-11-30 01:43:39,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2020-11-30 01:43:39,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 93. [2020-11-30 01:43:39,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-11-30 01:43:39,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 116 transitions. [2020-11-30 01:43:39,405 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 116 transitions. Word has length 21 [2020-11-30 01:43:39,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:43:39,406 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 116 transitions. [2020-11-30 01:43:39,406 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-30 01:43:39,406 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 116 transitions. [2020-11-30 01:43:39,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-30 01:43:39,408 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:43:39,408 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:43:39,615 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-11-30 01:43:39,615 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr37ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 01:43:39,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:43:39,616 INFO L82 PathProgramCache]: Analyzing trace with hash -2058889020, now seen corresponding path program 1 times [2020-11-30 01:43:39,616 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:43:39,616 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028282795] [2020-11-30 01:43:39,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:43:39,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:43:39,741 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-30 01:43:39,742 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028282795] [2020-11-30 01:43:39,742 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:43:39,742 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 01:43:39,742 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990916001] [2020-11-30 01:43:39,743 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 01:43:39,743 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:43:39,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 01:43:39,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 01:43:39,744 INFO L87 Difference]: Start difference. First operand 93 states and 116 transitions. Second operand 4 states. [2020-11-30 01:43:39,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:43:39,943 INFO L93 Difference]: Finished difference Result 218 states and 270 transitions. [2020-11-30 01:43:39,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 01:43:39,944 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2020-11-30 01:43:39,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:43:39,945 INFO L225 Difference]: With dead ends: 218 [2020-11-30 01:43:39,945 INFO L226 Difference]: Without dead ends: 171 [2020-11-30 01:43:39,946 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-30 01:43:39,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-11-30 01:43:39,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 106. [2020-11-30 01:43:39,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-11-30 01:43:39,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 132 transitions. [2020-11-30 01:43:39,955 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 132 transitions. Word has length 21 [2020-11-30 01:43:39,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:43:39,955 INFO L481 AbstractCegarLoop]: Abstraction has 106 states and 132 transitions. [2020-11-30 01:43:39,955 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 01:43:39,955 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 132 transitions. [2020-11-30 01:43:39,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-30 01:43:39,957 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:43:39,957 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:43:39,957 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-11-30 01:43:39,957 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr37ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 01:43:39,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:43:39,958 INFO L82 PathProgramCache]: Analyzing trace with hash 1110998152, now seen corresponding path program 1 times [2020-11-30 01:43:39,958 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:43:39,958 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064157912] [2020-11-30 01:43:39,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:43:39,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:43:40,055 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:43:40,056 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064157912] [2020-11-30 01:43:40,056 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1903780441] [2020-11-30 01:43:40,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9bd0f123-cac5-49dd-93e1-bf420db5422b/bin/utaipan/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:43:40,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:43:40,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-30 01:43:40,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:43:40,137 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:43:40,137 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:43:40,164 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:43:40,164 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [784705659] [2020-11-30 01:43:40,167 INFO L159 IcfgInterpreter]: Started Sifa with 23 locations of interest [2020-11-30 01:43:40,167 INFO L166 IcfgInterpreter]: Building call graph [2020-11-30 01:43:40,167 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-30 01:43:40,167 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-30 01:43:40,168 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-30 01:43:40,369 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-30 01:43:40,641 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 77 [2020-11-30 01:43:40,953 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 79 [2020-11-30 01:43:41,271 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 79 [2020-11-30 01:43:41,603 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 81 [2020-11-30 01:43:41,923 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 80 [2020-11-30 01:43:42,254 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 82 [2020-11-30 01:43:42,610 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 82 [2020-11-30 01:43:42,973 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 85 [2020-11-30 01:43:43,358 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 88 [2020-11-30 01:43:43,886 WARN L193 SmtUtils]: Spent 398.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 92 [2020-11-30 01:43:43,887 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2020-11-30 01:43:43,887 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [4, 4, 4] total 17 [2020-11-30 01:43:43,888 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143955787] [2020-11-30 01:43:43,888 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-30 01:43:43,888 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:43:43,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-30 01:43:43,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2020-11-30 01:43:43,889 INFO L87 Difference]: Start difference. First operand 106 states and 132 transitions. Second operand 12 states. [2020-11-30 01:43:45,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:43:45,333 INFO L93 Difference]: Finished difference Result 406 states and 501 transitions. [2020-11-30 01:43:45,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-30 01:43:45,334 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-11-30 01:43:45,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:43:45,336 INFO L225 Difference]: With dead ends: 406 [2020-11-30 01:43:45,337 INFO L226 Difference]: Without dead ends: 359 [2020-11-30 01:43:45,337 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 56 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2020-11-30 01:43:45,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2020-11-30 01:43:45,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 104. [2020-11-30 01:43:45,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-11-30 01:43:45,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 129 transitions. [2020-11-30 01:43:45,348 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 129 transitions. Word has length 23 [2020-11-30 01:43:45,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:43:45,349 INFO L481 AbstractCegarLoop]: Abstraction has 104 states and 129 transitions. [2020-11-30 01:43:45,349 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-30 01:43:45,349 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 129 transitions. [2020-11-30 01:43:45,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-30 01:43:45,351 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:43:45,351 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:43:45,567 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:43:45,567 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr37ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 01:43:45,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:43:45,568 INFO L82 PathProgramCache]: Analyzing trace with hash 226273833, now seen corresponding path program 1 times [2020-11-30 01:43:45,568 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:43:45,568 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599503761] [2020-11-30 01:43:45,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:43:45,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:43:45,662 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:43:45,663 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599503761] [2020-11-30 01:43:45,663 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [999570098] [2020-11-30 01:43:45,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9bd0f123-cac5-49dd-93e1-bf420db5422b/bin/utaipan/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:43:45,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:43:45,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-30 01:43:45,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:43:45,745 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:43:45,745 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:43:45,776 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:43:45,777 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1996104206] [2020-11-30 01:43:45,779 INFO L159 IcfgInterpreter]: Started Sifa with 24 locations of interest [2020-11-30 01:43:45,779 INFO L166 IcfgInterpreter]: Building call graph [2020-11-30 01:43:45,780 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-30 01:43:45,780 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-30 01:43:45,780 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-30 01:43:46,006 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-30 01:43:46,272 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 77 [2020-11-30 01:43:46,555 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 79 [2020-11-30 01:43:46,865 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 79 [2020-11-30 01:43:47,176 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 81 [2020-11-30 01:43:47,488 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 80 [2020-11-30 01:43:47,926 WARN L193 SmtUtils]: Spent 377.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 83 [2020-11-30 01:43:48,426 WARN L193 SmtUtils]: Spent 380.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 86 [2020-11-30 01:43:48,950 WARN L193 SmtUtils]: Spent 459.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 88 [2020-11-30 01:43:49,454 WARN L193 SmtUtils]: Spent 404.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 88 [2020-11-30 01:43:50,298 WARN L193 SmtUtils]: Spent 613.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 91 [2020-11-30 01:43:50,945 WARN L193 SmtUtils]: Spent 558.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 95 [2020-11-30 01:43:50,946 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2020-11-30 01:43:50,946 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [4, 4, 4] total 18 [2020-11-30 01:43:50,946 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888710503] [2020-11-30 01:43:50,946 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-30 01:43:50,947 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:43:50,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-30 01:43:50,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2020-11-30 01:43:50,947 INFO L87 Difference]: Start difference. First operand 104 states and 129 transitions. Second operand 13 states. [2020-11-30 01:43:52,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:43:52,562 INFO L93 Difference]: Finished difference Result 461 states and 567 transitions. [2020-11-30 01:43:52,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-30 01:43:52,563 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 24 [2020-11-30 01:43:52,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:43:52,566 INFO L225 Difference]: With dead ends: 461 [2020-11-30 01:43:52,566 INFO L226 Difference]: Without dead ends: 414 [2020-11-30 01:43:52,567 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 58 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2020-11-30 01:43:52,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2020-11-30 01:43:52,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 104. [2020-11-30 01:43:52,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-11-30 01:43:52,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 129 transitions. [2020-11-30 01:43:52,578 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 129 transitions. Word has length 24 [2020-11-30 01:43:52,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:43:52,579 INFO L481 AbstractCegarLoop]: Abstraction has 104 states and 129 transitions. [2020-11-30 01:43:52,579 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-30 01:43:52,579 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 129 transitions. [2020-11-30 01:43:52,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-30 01:43:52,580 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:43:52,581 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:43:52,795 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:43:52,795 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr37ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 01:43:52,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:43:52,796 INFO L82 PathProgramCache]: Analyzing trace with hash 2060647304, now seen corresponding path program 1 times [2020-11-30 01:43:52,796 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:43:52,796 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913514228] [2020-11-30 01:43:52,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:43:52,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:43:52,895 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:43:52,896 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913514228] [2020-11-30 01:43:52,896 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [99147060] [2020-11-30 01:43:52,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9bd0f123-cac5-49dd-93e1-bf420db5422b/bin/utaipan/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:43:52,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:43:52,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-30 01:43:52,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:43:52,978 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:43:52,978 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:43:53,009 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:43:53,009 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [739381315] [2020-11-30 01:43:53,012 INFO L159 IcfgInterpreter]: Started Sifa with 24 locations of interest [2020-11-30 01:43:53,012 INFO L166 IcfgInterpreter]: Building call graph [2020-11-30 01:43:53,012 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-30 01:43:53,012 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-30 01:43:53,013 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-30 01:43:53,231 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-30 01:43:53,458 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 77 [2020-11-30 01:43:53,718 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 79 [2020-11-30 01:43:53,962 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 79 [2020-11-30 01:43:54,328 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 82 [2020-11-30 01:43:54,707 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 85 [2020-11-30 01:43:55,109 WARN L193 SmtUtils]: Spent 351.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 87 [2020-11-30 01:43:55,567 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 86 [2020-11-30 01:43:55,970 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 88 [2020-11-30 01:43:56,371 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 88 [2020-11-30 01:43:57,196 WARN L193 SmtUtils]: Spent 705.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 91 [2020-11-30 01:43:58,058 WARN L193 SmtUtils]: Spent 750.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 95 [2020-11-30 01:43:58,059 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2020-11-30 01:43:58,059 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [4, 4, 4] total 18 [2020-11-30 01:43:58,059 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345089769] [2020-11-30 01:43:58,060 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-30 01:43:58,060 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:43:58,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-30 01:43:58,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2020-11-30 01:43:58,061 INFO L87 Difference]: Start difference. First operand 104 states and 129 transitions. Second operand 13 states. [2020-11-30 01:43:59,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:43:59,888 INFO L93 Difference]: Finished difference Result 445 states and 547 transitions. [2020-11-30 01:43:59,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-30 01:43:59,889 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 24 [2020-11-30 01:43:59,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:43:59,892 INFO L225 Difference]: With dead ends: 445 [2020-11-30 01:43:59,892 INFO L226 Difference]: Without dead ends: 398 [2020-11-30 01:43:59,892 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 58 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2020-11-30 01:43:59,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2020-11-30 01:43:59,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 112. [2020-11-30 01:43:59,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-11-30 01:43:59,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 140 transitions. [2020-11-30 01:43:59,903 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 140 transitions. Word has length 24 [2020-11-30 01:43:59,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:43:59,903 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 140 transitions. [2020-11-30 01:43:59,903 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-30 01:43:59,904 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 140 transitions. [2020-11-30 01:43:59,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-11-30 01:43:59,904 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:43:59,904 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-11-30 01:44:00,113 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-11-30 01:44:00,114 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr37ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 01:44:00,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:44:00,114 INFO L82 PathProgramCache]: Analyzing trace with hash 1761227397, now seen corresponding path program 1 times [2020-11-30 01:44:00,114 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:44:00,114 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738782566] [2020-11-30 01:44:00,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:44:00,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:44:00,222 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:44:00,223 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738782566] [2020-11-30 01:44:00,223 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1684862293] [2020-11-30 01:44:00,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9bd0f123-cac5-49dd-93e1-bf420db5422b/bin/utaipan/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:44:00,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:44:00,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-30 01:44:00,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:44:00,300 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:44:00,301 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:44:00,331 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:44:00,331 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1395077190] [2020-11-30 01:44:00,334 INFO L159 IcfgInterpreter]: Started Sifa with 26 locations of interest [2020-11-30 01:44:00,334 INFO L166 IcfgInterpreter]: Building call graph [2020-11-30 01:44:00,334 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-30 01:44:00,334 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-30 01:44:00,335 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-30 01:44:00,511 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-30 01:44:00,867 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 77 [2020-11-30 01:44:01,180 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 79 [2020-11-30 01:44:01,476 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 79 [2020-11-30 01:44:01,787 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 81 [2020-11-30 01:44:02,109 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 80 [2020-11-30 01:44:02,473 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 82 [2020-11-30 01:44:02,859 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 82 [2020-11-30 01:44:03,214 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 85 [2020-11-30 01:44:03,588 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 87 [2020-11-30 01:44:03,961 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 87 [2020-11-30 01:44:04,407 WARN L193 SmtUtils]: Spent 372.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 90 [2020-11-30 01:44:04,913 WARN L193 SmtUtils]: Spent 434.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 94 [2020-11-30 01:44:04,914 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2020-11-30 01:44:04,914 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [4, 4, 4] total 19 [2020-11-30 01:44:04,915 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311356669] [2020-11-30 01:44:04,915 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-11-30 01:44:04,915 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:44:04,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-11-30 01:44:04,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2020-11-30 01:44:04,916 INFO L87 Difference]: Start difference. First operand 112 states and 140 transitions. Second operand 14 states. [2020-11-30 01:44:08,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:44:08,956 INFO L93 Difference]: Finished difference Result 461 states and 567 transitions. [2020-11-30 01:44:08,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-11-30 01:44:08,958 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 26 [2020-11-30 01:44:08,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:44:08,960 INFO L225 Difference]: With dead ends: 461 [2020-11-30 01:44:08,960 INFO L226 Difference]: Without dead ends: 414 [2020-11-30 01:44:08,961 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 63 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2020-11-30 01:44:08,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2020-11-30 01:44:08,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 107. [2020-11-30 01:44:08,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-11-30 01:44:08,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 133 transitions. [2020-11-30 01:44:08,972 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 133 transitions. Word has length 26 [2020-11-30 01:44:08,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:44:08,972 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 133 transitions. [2020-11-30 01:44:08,972 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-11-30 01:44:08,972 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 133 transitions. [2020-11-30 01:44:08,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-11-30 01:44:08,973 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:44:08,973 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-11-30 01:44:09,183 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2020-11-30 01:44:09,183 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr37ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 01:44:09,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:44:09,184 INFO L82 PathProgramCache]: Analyzing trace with hash 241742860, now seen corresponding path program 1 times [2020-11-30 01:44:09,184 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:44:09,184 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944283073] [2020-11-30 01:44:09,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:44:09,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:44:09,337 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:44:09,337 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944283073] [2020-11-30 01:44:09,337 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [504856709] [2020-11-30 01:44:09,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9bd0f123-cac5-49dd-93e1-bf420db5422b/bin/utaipan/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:44:09,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:44:09,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-30 01:44:09,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:44:09,437 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:44:09,437 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:44:09,480 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:44:09,480 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2115882288] [2020-11-30 01:44:09,483 INFO L159 IcfgInterpreter]: Started Sifa with 26 locations of interest [2020-11-30 01:44:09,483 INFO L166 IcfgInterpreter]: Building call graph [2020-11-30 01:44:09,484 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-30 01:44:09,484 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-30 01:44:09,484 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-30 01:44:09,718 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-30 01:44:10,115 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 77 [2020-11-30 01:44:10,499 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 79 [2020-11-30 01:44:10,890 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 79 [2020-11-30 01:44:11,395 WARN L193 SmtUtils]: Spent 435.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 82 [2020-11-30 01:44:11,901 WARN L193 SmtUtils]: Spent 433.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 85 [2020-11-30 01:44:12,435 WARN L193 SmtUtils]: Spent 458.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 87 [2020-11-30 01:44:12,968 WARN L193 SmtUtils]: Spent 444.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 86 [2020-11-30 01:44:13,546 WARN L193 SmtUtils]: Spent 484.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 88 [2020-11-30 01:44:14,181 WARN L193 SmtUtils]: Spent 528.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 88 [2020-11-30 01:44:14,842 WARN L193 SmtUtils]: Spent 548.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 90 [2020-11-30 01:44:15,489 WARN L193 SmtUtils]: Spent 513.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 90 [2020-11-30 01:44:16,177 WARN L193 SmtUtils]: Spent 563.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 94 [2020-11-30 01:44:16,178 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2020-11-30 01:44:16,178 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [4, 4, 4] total 20 [2020-11-30 01:44:16,179 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40171104] [2020-11-30 01:44:16,179 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-11-30 01:44:16,179 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:44:16,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-11-30 01:44:16,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2020-11-30 01:44:16,180 INFO L87 Difference]: Start difference. First operand 107 states and 133 transitions. Second operand 14 states. [2020-11-30 01:44:18,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:44:18,624 INFO L93 Difference]: Finished difference Result 439 states and 536 transitions. [2020-11-30 01:44:18,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-11-30 01:44:18,626 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 26 [2020-11-30 01:44:18,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:44:18,628 INFO L225 Difference]: With dead ends: 439 [2020-11-30 01:44:18,628 INFO L226 Difference]: Without dead ends: 392 [2020-11-30 01:44:18,629 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 62 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2020-11-30 01:44:18,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2020-11-30 01:44:18,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 109. [2020-11-30 01:44:18,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-11-30 01:44:18,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 135 transitions. [2020-11-30 01:44:18,641 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 135 transitions. Word has length 26 [2020-11-30 01:44:18,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:44:18,642 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 135 transitions. [2020-11-30 01:44:18,642 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-11-30 01:44:18,642 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 135 transitions. [2020-11-30 01:44:18,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-11-30 01:44:18,643 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:44:18,643 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-11-30 01:44:18,871 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:44:18,871 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr37ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 01:44:18,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:44:18,872 INFO L82 PathProgramCache]: Analyzing trace with hash -636027759, now seen corresponding path program 1 times [2020-11-30 01:44:18,872 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:44:18,872 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401306803] [2020-11-30 01:44:18,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:44:18,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:44:18,988 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:44:18,988 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401306803] [2020-11-30 01:44:18,988 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [542362891] [2020-11-30 01:44:18,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9bd0f123-cac5-49dd-93e1-bf420db5422b/bin/utaipan/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:44:19,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:44:19,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-30 01:44:19,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:44:19,054 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:44:19,054 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:44:19,080 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:44:19,080 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1181045102] [2020-11-30 01:44:19,082 INFO L159 IcfgInterpreter]: Started Sifa with 27 locations of interest [2020-11-30 01:44:19,082 INFO L166 IcfgInterpreter]: Building call graph [2020-11-30 01:44:19,082 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-30 01:44:19,083 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-30 01:44:19,083 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-30 01:44:19,500 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-30 01:44:19,907 WARN L193 SmtUtils]: Spent 367.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 77 [2020-11-30 01:44:20,289 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 79 [2020-11-30 01:44:20,685 WARN L193 SmtUtils]: Spent 354.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 79 [2020-11-30 01:44:21,148 WARN L193 SmtUtils]: Spent 403.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 81 [2020-11-30 01:44:21,609 WARN L193 SmtUtils]: Spent 397.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 80 [2020-11-30 01:44:22,364 WARN L193 SmtUtils]: Spent 652.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 83 [2020-11-30 01:44:22,999 WARN L193 SmtUtils]: Spent 567.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 86 [2020-11-30 01:44:23,582 WARN L193 SmtUtils]: Spent 504.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 88 [2020-11-30 01:44:24,195 WARN L193 SmtUtils]: Spent 518.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 88 [2020-11-30 01:44:24,993 WARN L193 SmtUtils]: Spent 656.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 90 [2020-11-30 01:44:25,675 WARN L193 SmtUtils]: Spent 546.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 89 [2020-11-30 01:44:26,807 WARN L193 SmtUtils]: Spent 1.00 s on a formula simplification. DAG size of input: 96 DAG size of output: 92 [2020-11-30 01:44:30,182 WARN L193 SmtUtils]: Spent 3.18 s on a formula simplification. DAG size of input: 100 DAG size of output: 96 [2020-11-30 01:44:30,183 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2020-11-30 01:44:30,183 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [4, 4, 4] total 20 [2020-11-30 01:44:30,183 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073971158] [2020-11-30 01:44:30,184 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-11-30 01:44:30,184 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:44:30,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-11-30 01:44:30,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2020-11-30 01:44:30,185 INFO L87 Difference]: Start difference. First operand 109 states and 135 transitions. Second operand 15 states. [2020-11-30 01:44:32,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:44:32,523 INFO L93 Difference]: Finished difference Result 505 states and 619 transitions. [2020-11-30 01:44:32,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-11-30 01:44:32,526 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 27 [2020-11-30 01:44:32,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:44:32,529 INFO L225 Difference]: With dead ends: 505 [2020-11-30 01:44:32,529 INFO L226 Difference]: Without dead ends: 458 [2020-11-30 01:44:32,530 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 65 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 10.7s TimeCoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2020-11-30 01:44:32,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2020-11-30 01:44:32,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 117. [2020-11-30 01:44:32,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-11-30 01:44:32,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 146 transitions. [2020-11-30 01:44:32,542 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 146 transitions. Word has length 27 [2020-11-30 01:44:32,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:44:32,544 INFO L481 AbstractCegarLoop]: Abstraction has 117 states and 146 transitions. [2020-11-30 01:44:32,544 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-11-30 01:44:32,544 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 146 transitions. [2020-11-30 01:44:32,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-11-30 01:44:32,546 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:44:32,546 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-11-30 01:44:32,759 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2020-11-30 01:44:32,760 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr37ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 01:44:32,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:44:32,760 INFO L82 PathProgramCache]: Analyzing trace with hash -1351203147, now seen corresponding path program 1 times [2020-11-30 01:44:32,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:44:32,760 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445413086] [2020-11-30 01:44:32,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:44:32,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:44:32,852 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:44:32,852 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445413086] [2020-11-30 01:44:32,853 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1805138336] [2020-11-30 01:44:32,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9bd0f123-cac5-49dd-93e1-bf420db5422b/bin/utaipan/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:44:32,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:44:32,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-30 01:44:32,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:44:32,951 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:44:32,951 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:44:32,984 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:44:32,984 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1245573442] [2020-11-30 01:44:32,987 INFO L159 IcfgInterpreter]: Started Sifa with 29 locations of interest [2020-11-30 01:44:32,987 INFO L166 IcfgInterpreter]: Building call graph [2020-11-30 01:44:32,988 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-30 01:44:32,988 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-30 01:44:32,988 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-30 01:44:33,242 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-30 01:44:33,579 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 77 [2020-11-30 01:44:33,939 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 79 [2020-11-30 01:44:34,316 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 79 [2020-11-30 01:44:34,730 WARN L193 SmtUtils]: Spent 366.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 81 [2020-11-30 01:44:35,108 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 80 [2020-11-30 01:44:35,592 WARN L193 SmtUtils]: Spent 422.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 82 [2020-11-30 01:44:36,040 WARN L193 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 82 [2020-11-30 01:44:36,510 WARN L193 SmtUtils]: Spent 398.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 85 [2020-11-30 01:44:37,062 WARN L193 SmtUtils]: Spent 465.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 87 [2020-11-30 01:44:37,572 WARN L193 SmtUtils]: Spent 414.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 87 [2020-11-30 01:44:38,099 WARN L193 SmtUtils]: Spent 423.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 89 [2020-11-30 01:44:38,677 WARN L193 SmtUtils]: Spent 456.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 88 [2020-11-30 01:44:39,469 WARN L193 SmtUtils]: Spent 624.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 91 [2020-11-30 01:44:40,787 WARN L193 SmtUtils]: Spent 1.18 s on a formula simplification. DAG size of input: 99 DAG size of output: 95 [2020-11-30 01:44:40,788 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2020-11-30 01:44:40,788 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [4, 4, 4] total 21 [2020-11-30 01:44:40,789 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675790873] [2020-11-30 01:44:40,789 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-11-30 01:44:40,789 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:44:40,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-11-30 01:44:40,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=354, Unknown=0, NotChecked=0, Total=420 [2020-11-30 01:44:40,790 INFO L87 Difference]: Start difference. First operand 117 states and 146 transitions. Second operand 16 states. [2020-11-30 01:44:43,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:44:43,538 INFO L93 Difference]: Finished difference Result 505 states and 619 transitions. [2020-11-30 01:44:43,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-11-30 01:44:43,540 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-11-30 01:44:43,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:44:43,542 INFO L225 Difference]: With dead ends: 505 [2020-11-30 01:44:43,542 INFO L226 Difference]: Without dead ends: 458 [2020-11-30 01:44:43,542 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 70 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=66, Invalid=354, Unknown=0, NotChecked=0, Total=420 [2020-11-30 01:44:43,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2020-11-30 01:44:43,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 109. [2020-11-30 01:44:43,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-11-30 01:44:43,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 135 transitions. [2020-11-30 01:44:43,554 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 135 transitions. Word has length 29 [2020-11-30 01:44:43,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:44:43,555 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 135 transitions. [2020-11-30 01:44:43,555 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-11-30 01:44:43,555 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 135 transitions. [2020-11-30 01:44:43,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-11-30 01:44:43,556 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:44:43,556 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-11-30 01:44:43,771 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2020-11-30 01:44:43,771 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr37ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 01:44:43,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:44:43,772 INFO L82 PathProgramCache]: Analyzing trace with hash -1397713195, now seen corresponding path program 1 times [2020-11-30 01:44:43,772 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:44:43,772 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844191282] [2020-11-30 01:44:43,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:44:43,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:44:43,917 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:44:43,917 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844191282] [2020-11-30 01:44:43,917 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [120274834] [2020-11-30 01:44:43,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9bd0f123-cac5-49dd-93e1-bf420db5422b/bin/utaipan/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:44:43,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:44:43,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-30 01:44:43,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:44:44,001 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:44:44,001 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:44:44,040 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:44:44,040 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [339928224] [2020-11-30 01:44:44,043 INFO L159 IcfgInterpreter]: Started Sifa with 29 locations of interest [2020-11-30 01:44:44,043 INFO L166 IcfgInterpreter]: Building call graph [2020-11-30 01:44:44,043 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-30 01:44:44,043 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-30 01:44:44,043 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-30 01:44:44,379 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-30 01:44:44,796 WARN L193 SmtUtils]: Spent 368.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 77 [2020-11-30 01:44:45,182 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 79 [2020-11-30 01:44:45,584 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 79 [2020-11-30 01:44:46,012 WARN L193 SmtUtils]: Spent 374.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 81 [2020-11-30 01:44:46,430 WARN L193 SmtUtils]: Spent 351.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 80 [2020-11-30 01:44:47,135 WARN L193 SmtUtils]: Spent 637.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 83 [2020-11-30 01:44:48,018 WARN L193 SmtUtils]: Spent 768.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 86 [2020-11-30 01:44:48,672 WARN L193 SmtUtils]: Spent 558.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 88 [2020-11-30 01:44:49,283 WARN L193 SmtUtils]: Spent 493.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 88 [2020-11-30 01:44:50,095 WARN L193 SmtUtils]: Spent 703.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 90 [2020-11-30 01:44:50,886 WARN L193 SmtUtils]: Spent 677.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 89 [2020-11-30 01:44:51,830 WARN L193 SmtUtils]: Spent 777.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 91 [2020-11-30 01:44:52,694 WARN L193 SmtUtils]: Spent 658.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 91 [2020-11-30 01:44:53,739 WARN L193 SmtUtils]: Spent 786.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 95 [2020-11-30 01:44:53,740 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2020-11-30 01:44:53,740 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [4, 4, 4] total 22 [2020-11-30 01:44:53,741 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595429268] [2020-11-30 01:44:53,741 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-11-30 01:44:53,741 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:44:53,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-11-30 01:44:53,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=382, Unknown=0, NotChecked=0, Total=462 [2020-11-30 01:44:53,742 INFO L87 Difference]: Start difference. First operand 109 states and 135 transitions. Second operand 16 states. [2020-11-30 01:44:56,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:44:56,413 INFO L93 Difference]: Finished difference Result 504 states and 615 transitions. [2020-11-30 01:44:56,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-11-30 01:44:56,414 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-11-30 01:44:56,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:44:56,416 INFO L225 Difference]: With dead ends: 504 [2020-11-30 01:44:56,417 INFO L226 Difference]: Without dead ends: 457 [2020-11-30 01:44:56,417 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 69 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=80, Invalid=382, Unknown=0, NotChecked=0, Total=462 [2020-11-30 01:44:56,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2020-11-30 01:44:56,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 109. [2020-11-30 01:44:56,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-11-30 01:44:56,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 135 transitions. [2020-11-30 01:44:56,429 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 135 transitions. Word has length 29 [2020-11-30 01:44:56,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:44:56,429 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 135 transitions. [2020-11-30 01:44:56,429 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-11-30 01:44:56,429 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 135 transitions. [2020-11-30 01:44:56,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-11-30 01:44:56,430 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:44:56,430 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-11-30 01:44:56,643 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2020-11-30 01:44:56,643 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr37ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 01:44:56,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:44:56,643 INFO L82 PathProgramCache]: Analyzing trace with hash 1458701035, now seen corresponding path program 1 times [2020-11-30 01:44:56,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:44:56,644 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437112250] [2020-11-30 01:44:56,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:44:56,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:44:56,727 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:44:56,727 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437112250] [2020-11-30 01:44:56,728 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [211666202] [2020-11-30 01:44:56,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9bd0f123-cac5-49dd-93e1-bf420db5422b/bin/utaipan/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:44:56,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:44:56,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-30 01:44:56,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:44:56,922 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:44:56,922 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:44:56,984 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:44:56,984 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-30 01:44:56,984 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [4] total 8 [2020-11-30 01:44:56,985 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950470899] [2020-11-30 01:44:56,985 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 01:44:56,993 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:44:56,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 01:44:56,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-11-30 01:44:56,994 INFO L87 Difference]: Start difference. First operand 109 states and 135 transitions. Second operand 6 states. [2020-11-30 01:44:57,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:44:57,633 INFO L93 Difference]: Finished difference Result 214 states and 295 transitions. [2020-11-30 01:44:57,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 01:44:57,635 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30 [2020-11-30 01:44:57,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:44:57,636 INFO L225 Difference]: With dead ends: 214 [2020-11-30 01:44:57,636 INFO L226 Difference]: Without dead ends: 175 [2020-11-30 01:44:57,637 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=39, Unknown=0, NotChecked=0, Total=72 [2020-11-30 01:44:57,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-11-30 01:44:57,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 160. [2020-11-30 01:44:57,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-11-30 01:44:57,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 209 transitions. [2020-11-30 01:44:57,656 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 209 transitions. Word has length 30 [2020-11-30 01:44:57,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:44:57,657 INFO L481 AbstractCegarLoop]: Abstraction has 160 states and 209 transitions. [2020-11-30 01:44:57,657 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 01:44:57,657 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 209 transitions. [2020-11-30 01:44:57,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-11-30 01:44:57,658 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:44:57,658 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, 1, 1, 1] [2020-11-30 01:44:57,887 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:44:57,887 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr37ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 01:44:57,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:44:57,887 INFO L82 PathProgramCache]: Analyzing trace with hash 1252437152, now seen corresponding path program 1 times [2020-11-30 01:44:57,888 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:44:57,888 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458809044] [2020-11-30 01:44:57,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:44:57,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:44:58,066 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-11-30 01:44:58,066 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458809044] [2020-11-30 01:44:58,066 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:44:58,066 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 01:44:58,066 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328907001] [2020-11-30 01:44:58,067 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 01:44:58,067 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:44:58,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 01:44:58,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-30 01:44:58,067 INFO L87 Difference]: Start difference. First operand 160 states and 209 transitions. Second operand 5 states. [2020-11-30 01:44:58,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:44:58,488 INFO L93 Difference]: Finished difference Result 201 states and 257 transitions. [2020-11-30 01:44:58,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 01:44:58,490 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 39 [2020-11-30 01:44:58,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:44:58,491 INFO L225 Difference]: With dead ends: 201 [2020-11-30 01:44:58,491 INFO L226 Difference]: Without dead ends: 173 [2020-11-30 01:44:58,491 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-11-30 01:44:58,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2020-11-30 01:44:58,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 148. [2020-11-30 01:44:58,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-11-30 01:44:58,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 192 transitions. [2020-11-30 01:44:58,507 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 192 transitions. Word has length 39 [2020-11-30 01:44:58,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:44:58,507 INFO L481 AbstractCegarLoop]: Abstraction has 148 states and 192 transitions. [2020-11-30 01:44:58,507 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 01:44:58,507 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 192 transitions. [2020-11-30 01:44:58,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-11-30 01:44:58,508 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:44:58,508 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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] [2020-11-30 01:44:58,508 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-11-30 01:44:58,508 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr37ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 01:44:58,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:44:58,509 INFO L82 PathProgramCache]: Analyzing trace with hash 1243145505, now seen corresponding path program 1 times [2020-11-30 01:44:58,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:44:58,509 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465028324] [2020-11-30 01:44:58,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:44:58,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:44:58,702 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 35 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-30 01:44:58,702 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465028324] [2020-11-30 01:44:58,703 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1665442606] [2020-11-30 01:44:58,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9bd0f123-cac5-49dd-93e1-bf420db5422b/bin/utaipan/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:44:58,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:44:58,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 29 conjunts are in the unsatisfiable core [2020-11-30 01:44:58,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:44:59,521 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2020-11-30 01:45:02,461 WARN L193 SmtUtils]: Spent 393.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2020-11-30 01:45:03,089 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 21 [2020-11-30 01:45:03,541 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 7 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:45:03,541 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:45:04,321 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 29 [2020-11-30 01:45:05,211 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 34 [2020-11-30 01:45:05,730 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 32 [2020-11-30 01:45:10,240 WARN L193 SmtUtils]: Spent 4.29 s on a formula simplification. DAG size of input: 43 DAG size of output: 33 [2020-11-30 01:45:14,706 WARN L193 SmtUtils]: Spent 2.25 s on a formula simplification. DAG size of input: 35 DAG size of output: 34 [2020-11-30 01:45:15,430 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 18 [2020-11-30 01:45:15,759 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 7 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:45:15,759 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1781243085] [2020-11-30 01:45:15,763 INFO L159 IcfgInterpreter]: Started Sifa with 30 locations of interest [2020-11-30 01:45:15,763 INFO L166 IcfgInterpreter]: Building call graph [2020-11-30 01:45:15,764 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-30 01:45:15,764 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-30 01:45:15,764 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-30 01:45:16,668 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-30 01:45:17,188 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 49 [2020-11-30 01:45:17,791 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 77 [2020-11-30 01:45:18,450 WARN L193 SmtUtils]: Spent 368.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 80 [2020-11-30 01:45:19,058 WARN L193 SmtUtils]: Spent 385.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 82 [2020-11-30 01:45:19,734 WARN L193 SmtUtils]: Spent 459.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 84 [2020-11-30 01:45:20,395 WARN L193 SmtUtils]: Spent 444.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 85 [2020-11-30 01:45:21,083 WARN L193 SmtUtils]: Spent 446.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 87 [2020-11-30 01:45:21,753 WARN L193 SmtUtils]: Spent 419.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 86 [2020-11-30 01:45:24,886 WARN L193 SmtUtils]: Spent 2.79 s on a formula simplification. DAG size of input: 93 DAG size of output: 89 [2020-11-30 01:45:25,462 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 34 [2020-11-30 01:45:25,870 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 38 [2020-11-30 01:45:26,198 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 37 [2020-11-30 01:45:26,593 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 42 [2020-11-30 01:45:27,689 WARN L193 SmtUtils]: Spent 425.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 48 [2020-11-30 01:45:28,338 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 39 [2020-11-30 01:45:28,786 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2020-11-30 01:45:29,312 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 43 [2020-11-30 01:45:30,734 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 01:45:30,734 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-11-30 01:45:30,734 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 15, 16] total 36 [2020-11-30 01:45:30,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160434520] [2020-11-30 01:45:30,735 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-11-30 01:45:30,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:45:30,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-11-30 01:45:30,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=360, Invalid=2501, Unknown=1, NotChecked=0, Total=2862 [2020-11-30 01:45:30,736 INFO L87 Difference]: Start difference. First operand 148 states and 192 transitions. Second operand 36 states. [2020-11-30 01:45:31,650 WARN L193 SmtUtils]: Spent 648.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 55 [2020-11-30 01:45:32,455 WARN L193 SmtUtils]: Spent 550.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 52 [2020-11-30 01:45:33,209 WARN L193 SmtUtils]: Spent 514.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 39 [2020-11-30 01:45:36,914 WARN L193 SmtUtils]: Spent 2.65 s on a formula simplification. DAG size of input: 67 DAG size of output: 46 [2020-11-30 01:45:38,005 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 43 [2020-11-30 01:45:41,284 WARN L193 SmtUtils]: Spent 2.47 s on a formula simplification. DAG size of input: 63 DAG size of output: 42 [2020-11-30 01:45:43,165 WARN L193 SmtUtils]: Spent 400.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 44 [2020-11-30 01:45:44,357 WARN L193 SmtUtils]: Spent 415.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 33 [2020-11-30 01:45:45,501 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 27 [2020-11-30 01:45:48,221 WARN L193 SmtUtils]: Spent 2.37 s on a formula simplification. DAG size of input: 61 DAG size of output: 29 [2020-11-30 01:45:49,290 WARN L193 SmtUtils]: Spent 583.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 56 [2020-11-30 01:45:50,114 WARN L193 SmtUtils]: Spent 365.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 29 [2020-11-30 01:45:52,597 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 30 [2020-11-30 01:45:55,353 WARN L193 SmtUtils]: Spent 2.43 s on a formula simplification. DAG size of input: 64 DAG size of output: 38 [2020-11-30 01:45:56,040 WARN L193 SmtUtils]: Spent 370.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 36 [2020-11-30 01:45:56,750 WARN L193 SmtUtils]: Spent 432.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 37 [2020-11-30 01:45:57,738 WARN L193 SmtUtils]: Spent 435.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 39 [2020-11-30 01:45:58,165 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 33 [2020-11-30 01:45:59,037 WARN L193 SmtUtils]: Spent 527.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 44 [2020-11-30 01:45:59,835 WARN L193 SmtUtils]: Spent 439.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 36 [2020-11-30 01:46:02,377 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 40 [2020-11-30 01:46:03,169 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 38 [2020-11-30 01:46:03,572 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 27 [2020-11-30 01:46:03,955 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 45 [2020-11-30 01:46:04,933 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 47 [2020-11-30 01:46:05,454 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 34 [2020-11-30 01:46:06,121 WARN L193 SmtUtils]: Spent 412.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 35 [2020-11-30 01:46:06,630 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 31 [2020-11-30 01:46:07,640 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 45 [2020-11-30 01:46:08,200 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 33 [2020-11-30 01:46:08,893 WARN L193 SmtUtils]: Spent 403.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 42 [2020-11-30 01:46:09,494 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 38 [2020-11-30 01:46:10,063 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 31 [2020-11-30 01:46:10,557 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 35 [2020-11-30 01:46:13,302 WARN L193 SmtUtils]: Spent 431.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 50 [2020-11-30 01:46:14,743 WARN L193 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 86 DAG size of output: 53 [2020-11-30 01:46:17,973 WARN L193 SmtUtils]: Spent 2.76 s on a formula simplification. DAG size of input: 70 DAG size of output: 54 [2020-11-30 01:46:18,515 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 29 [2020-11-30 01:46:19,142 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 39 [2020-11-30 01:46:19,792 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 36 [2020-11-30 01:46:22,367 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 29 [2020-11-30 01:46:23,819 WARN L193 SmtUtils]: Spent 730.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 62 [2020-11-30 01:46:28,509 WARN L193 SmtUtils]: Spent 4.37 s on a formula simplification. DAG size of input: 53 DAG size of output: 36 [2020-11-30 01:46:29,777 WARN L193 SmtUtils]: Spent 498.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 55 [2020-11-30 01:46:30,196 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 43 [2020-11-30 01:46:31,057 WARN L193 SmtUtils]: Spent 477.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 35 [2020-11-30 01:46:31,482 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 37 [2020-11-30 01:46:32,283 WARN L193 SmtUtils]: Spent 505.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 45 [2020-11-30 01:46:33,358 WARN L193 SmtUtils]: Spent 847.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 47 [2020-11-30 01:46:35,731 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 26 [2020-11-30 01:46:40,696 WARN L193 SmtUtils]: Spent 4.64 s on a formula simplification. DAG size of input: 62 DAG size of output: 36 [2020-11-30 01:46:41,166 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 45 [2020-11-30 01:46:41,908 WARN L193 SmtUtils]: Spent 476.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 43 [2020-11-30 01:46:42,471 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 38 [2020-11-30 01:46:43,090 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 31 [2020-11-30 01:46:47,990 WARN L193 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 44 [2020-11-30 01:46:48,361 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 34 [2020-11-30 01:46:48,961 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 30 [2020-11-30 01:46:49,880 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 30 [2020-11-30 01:46:50,696 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 22 [2020-11-30 01:46:51,448 WARN L193 SmtUtils]: Spent 489.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 45 [2020-11-30 01:46:51,865 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 23 [2020-11-30 01:46:52,465 WARN L193 SmtUtils]: Spent 384.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 37 [2020-11-30 01:46:53,296 WARN L193 SmtUtils]: Spent 538.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 56 [2020-11-30 01:46:54,027 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 27 [2020-11-30 01:46:54,433 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 32 [2020-11-30 01:46:54,746 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 35 [2020-11-30 01:46:55,125 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 31 [2020-11-30 01:46:55,542 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 27 [2020-11-30 01:46:56,046 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 25 [2020-11-30 01:46:57,040 WARN L193 SmtUtils]: Spent 417.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 43 [2020-11-30 01:46:57,716 WARN L193 SmtUtils]: Spent 395.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 34 [2020-11-30 01:46:58,200 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 37 [2020-11-30 01:47:01,690 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 22 [2020-11-30 01:47:07,136 WARN L193 SmtUtils]: Spent 2.55 s on a formula simplification. DAG size of input: 70 DAG size of output: 35 [2020-11-30 01:47:07,839 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 49 [2020-11-30 01:47:08,684 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 19 [2020-11-30 01:47:09,692 WARN L193 SmtUtils]: Spent 371.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 44 [2020-11-30 01:47:10,396 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-11-30 01:47:11,606 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 26 [2020-11-30 01:47:12,104 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 39 [2020-11-30 01:47:13,371 WARN L193 SmtUtils]: Spent 365.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 43 [2020-11-30 01:47:14,624 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 30 [2020-11-30 01:47:17,498 WARN L193 SmtUtils]: Spent 2.58 s on a formula simplification. DAG size of input: 57 DAG size of output: 38 [2020-11-30 01:47:18,109 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 27 [2020-11-30 01:47:18,788 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 37 [2020-11-30 01:47:19,436 WARN L193 SmtUtils]: Spent 431.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 41 [2020-11-30 01:47:22,935 WARN L193 SmtUtils]: Spent 411.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 37 [2020-11-30 01:47:23,666 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 39 [2020-11-30 01:47:24,779 WARN L193 SmtUtils]: Spent 502.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 43 [2020-11-30 01:47:26,266 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 40 [2020-11-30 01:47:27,629 WARN L193 SmtUtils]: Spent 627.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 47 [2020-11-30 01:47:28,457 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 36 [2020-11-30 01:47:29,269 WARN L193 SmtUtils]: Spent 399.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 38 [2020-11-30 01:47:29,931 WARN L193 SmtUtils]: Spent 394.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 32 [2020-11-30 01:47:30,845 WARN L193 SmtUtils]: Spent 463.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 39 [2020-11-30 01:47:33,535 WARN L193 SmtUtils]: Spent 2.43 s on a formula simplification. DAG size of input: 56 DAG size of output: 30 [2020-11-30 01:47:34,321 WARN L193 SmtUtils]: Spent 380.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 37 [2020-11-30 01:47:36,951 WARN L193 SmtUtils]: Spent 2.42 s on a formula simplification. DAG size of input: 55 DAG size of output: 36 [2020-11-30 01:47:37,284 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 21 [2020-11-30 01:47:37,751 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 24 [2020-11-30 01:47:38,149 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 28 [2020-11-30 01:47:38,633 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 29 [2020-11-30 01:47:41,584 WARN L193 SmtUtils]: Spent 2.69 s on a formula simplification. DAG size of input: 63 DAG size of output: 50 [2020-11-30 01:47:42,052 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 23 [2020-11-30 01:47:42,742 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 30 [2020-11-30 01:47:43,182 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 36 [2020-11-30 01:47:46,261 WARN L193 SmtUtils]: Spent 2.85 s on a formula simplification. DAG size of input: 71 DAG size of output: 58 [2020-11-30 01:47:46,693 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 30 [2020-11-30 01:47:48,581 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 29 [2020-11-30 01:47:48,952 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 29 [2020-11-30 01:47:51,280 WARN L193 SmtUtils]: Spent 2.22 s on a formula simplification. DAG size of input: 46 DAG size of output: 31 [2020-11-30 01:47:51,992 WARN L193 SmtUtils]: Spent 434.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 40 [2020-11-30 01:47:55,523 WARN L193 SmtUtils]: Spent 558.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 37 [2020-11-30 01:47:56,694 WARN L193 SmtUtils]: Spent 388.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 38 [2020-11-30 01:47:59,937 WARN L193 SmtUtils]: Spent 404.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 51 [2020-11-30 01:48:00,595 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 32 [2020-11-30 01:48:01,484 WARN L193 SmtUtils]: Spent 414.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 52 [2020-11-30 01:48:02,701 WARN L193 SmtUtils]: Spent 510.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 38 [2020-11-30 01:48:04,014 WARN L193 SmtUtils]: Spent 385.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 42 [2020-11-30 01:48:04,741 WARN L193 SmtUtils]: Spent 480.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 36 [2020-11-30 01:48:05,614 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 24 [2020-11-30 01:48:06,410 WARN L193 SmtUtils]: Spent 461.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 43 [2020-11-30 01:48:07,128 WARN L193 SmtUtils]: Spent 438.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 34 [2020-11-30 01:48:08,418 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 41 [2020-11-30 01:48:08,979 WARN L193 SmtUtils]: Spent 364.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 40 [2020-11-30 01:48:11,404 WARN L193 SmtUtils]: Spent 2.22 s on a formula simplification. DAG size of input: 46 DAG size of output: 25 [2020-11-30 01:48:11,856 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 28 [2020-11-30 01:48:12,592 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 32 [2020-11-30 01:48:13,098 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 33 [2020-11-30 01:48:13,982 WARN L193 SmtUtils]: Spent 654.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 53 [2020-11-30 01:48:14,350 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 27 [2020-11-30 01:48:15,486 WARN L193 SmtUtils]: Spent 862.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 61 [2020-11-30 01:48:15,894 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 34 [2020-11-30 01:48:16,857 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 20 [2020-11-30 01:48:17,668 WARN L193 SmtUtils]: Spent 431.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 33 [2020-11-30 01:48:18,050 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 33 [2020-11-30 01:48:18,420 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 35 [2020-11-30 01:48:21,457 WARN L193 SmtUtils]: Spent 2.74 s on a formula simplification. DAG size of input: 72 DAG size of output: 44 [2020-11-30 01:48:22,044 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2020-11-30 01:48:23,040 WARN L193 SmtUtils]: Spent 404.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 42 [2020-11-30 01:48:24,105 WARN L193 SmtUtils]: Spent 443.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 54 [2020-11-30 01:48:24,719 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 28 [2020-11-30 01:48:25,434 WARN L193 SmtUtils]: Spent 447.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 55 [2020-11-30 01:48:26,306 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 22 [2020-11-30 01:48:27,304 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 28 [2020-11-30 01:48:27,699 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 39 [2020-11-30 01:48:28,839 WARN L193 SmtUtils]: Spent 685.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 49 [2020-11-30 01:48:31,964 WARN L193 SmtUtils]: Spent 2.44 s on a formula simplification. DAG size of input: 59 DAG size of output: 32 [2020-11-30 01:48:33,012 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-11-30 01:48:33,397 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 27 [2020-11-30 01:48:34,255 WARN L193 SmtUtils]: Spent 425.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 29 [2020-11-30 01:48:34,688 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 34 [2020-11-30 01:48:35,260 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 24 [2020-11-30 01:48:35,776 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2020-11-30 01:48:36,650 WARN L193 SmtUtils]: Spent 380.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 33 [2020-11-30 01:48:37,082 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 30 [2020-11-30 01:48:37,403 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2020-11-30 01:48:38,318 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 25 [2020-11-30 01:48:39,154 WARN L193 SmtUtils]: Spent 436.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 64 [2020-11-30 01:48:40,077 WARN L193 SmtUtils]: Spent 426.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 47 [2020-11-30 01:48:40,728 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 31 [2020-11-30 01:48:41,303 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 32 [2020-11-30 01:48:41,801 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 32 [2020-11-30 01:48:42,743 WARN L193 SmtUtils]: Spent 644.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 52 [2020-11-30 01:48:43,546 WARN L193 SmtUtils]: Spent 373.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 55 [2020-11-30 01:48:44,259 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 33 [2020-11-30 01:48:44,745 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 26 [2020-11-30 01:48:45,561 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 36 [2020-11-30 01:48:46,117 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 29 [2020-11-30 01:48:47,239 WARN L193 SmtUtils]: Spent 507.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 41 [2020-11-30 01:48:47,606 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2020-11-30 01:48:50,772 WARN L193 SmtUtils]: Spent 2.67 s on a formula simplification. DAG size of input: 63 DAG size of output: 52 [2020-11-30 01:48:51,832 WARN L193 SmtUtils]: Spent 458.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 36 [2020-11-30 01:48:52,816 WARN L193 SmtUtils]: Spent 474.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 39 [2020-11-30 01:48:55,851 WARN L193 SmtUtils]: Spent 2.52 s on a formula simplification. DAG size of input: 62 DAG size of output: 36 [2020-11-30 01:48:58,549 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 45 [2020-11-30 01:48:59,835 WARN L193 SmtUtils]: Spent 399.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 36 [2020-11-30 01:49:00,265 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 31 [2020-11-30 01:49:00,788 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 38 [2020-11-30 01:49:01,673 WARN L193 SmtUtils]: Spent 519.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 45 [2020-11-30 01:49:02,268 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2020-11-30 01:49:02,657 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 34 [2020-11-30 01:49:05,893 WARN L193 SmtUtils]: Spent 2.57 s on a formula simplification. DAG size of input: 68 DAG size of output: 33 [2020-11-30 01:49:06,626 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 51 [2020-11-30 01:49:07,316 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 42 [2020-11-30 01:49:07,694 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-11-30 01:49:08,572 WARN L193 SmtUtils]: Spent 378.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 51 [2020-11-30 01:49:11,727 WARN L193 SmtUtils]: Spent 573.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 56 [2020-11-30 01:49:12,774 WARN L193 SmtUtils]: Spent 670.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 59 [2020-11-30 01:49:17,610 WARN L193 SmtUtils]: Spent 4.49 s on a formula simplification. DAG size of input: 58 DAG size of output: 37 [2020-11-30 01:49:18,443 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 49 [2020-11-30 01:49:19,315 WARN L193 SmtUtils]: Spent 603.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 44 [2020-11-30 01:49:20,033 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 55 [2020-11-30 01:49:20,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:49:20,035 INFO L93 Difference]: Finished difference Result 1163 states and 1557 transitions. [2020-11-30 01:49:20,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 283 states. [2020-11-30 01:49:20,036 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 48 [2020-11-30 01:49:20,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:49:20,042 INFO L225 Difference]: With dead ends: 1163 [2020-11-30 01:49:20,042 INFO L226 Difference]: Without dead ends: 1046 [2020-11-30 01:49:20,069 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 489 GetRequests, 149 SyntacticMatches, 12 SemanticMatches, 328 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44509 ImplicationChecksByTransitivity, 218.4s TimeCoverageRelationStatistics Valid=13480, Invalid=95084, Unknown=6, NotChecked=0, Total=108570 [2020-11-30 01:49:20,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1046 states. [2020-11-30 01:49:20,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1046 to 381. [2020-11-30 01:49:20,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 381 states. [2020-11-30 01:49:20,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 510 transitions. [2020-11-30 01:49:20,143 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 510 transitions. Word has length 48 [2020-11-30 01:49:20,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:49:20,143 INFO L481 AbstractCegarLoop]: Abstraction has 381 states and 510 transitions. [2020-11-30 01:49:20,143 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-11-30 01:49:20,143 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 510 transitions. [2020-11-30 01:49:20,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-11-30 01:49:20,145 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:49:20,145 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 2, 2, 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, 1, 1, 1, 1] [2020-11-30 01:49:20,361 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2020-11-30 01:49:20,362 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr37ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 01:49:20,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:49:20,362 INFO L82 PathProgramCache]: Analyzing trace with hash -1408498827, now seen corresponding path program 1 times [2020-11-30 01:49:20,362 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:49:20,362 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805958829] [2020-11-30 01:49:20,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:49:20,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:49:20,516 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 28 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-11-30 01:49:20,516 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805958829] [2020-11-30 01:49:20,516 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1512818128] [2020-11-30 01:49:20,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9bd0f123-cac5-49dd-93e1-bf420db5422b/bin/utaipan/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:49:20,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:49:20,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-30 01:49:20,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:49:20,687 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 28 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-11-30 01:49:20,687 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:49:21,060 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 31 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-30 01:49:21,061 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1613801145] [2020-11-30 01:49:21,064 INFO L159 IcfgInterpreter]: Started Sifa with 38 locations of interest [2020-11-30 01:49:21,064 INFO L166 IcfgInterpreter]: Building call graph [2020-11-30 01:49:21,065 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-30 01:49:21,067 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-30 01:49:21,067 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-30 01:49:22,035 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-30 01:49:22,497 WARN L193 SmtUtils]: Spent 401.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 49 [2020-11-30 01:49:23,101 WARN L193 SmtUtils]: Spent 540.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 77 [2020-11-30 01:49:23,786 WARN L193 SmtUtils]: Spent 605.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 80 [2020-11-30 01:49:24,591 WARN L193 SmtUtils]: Spent 696.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 82 [2020-11-30 01:49:25,379 WARN L193 SmtUtils]: Spent 678.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 84 [2020-11-30 01:49:26,240 WARN L193 SmtUtils]: Spent 724.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 85 [2020-11-30 01:49:27,082 WARN L193 SmtUtils]: Spent 712.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 87 [2020-11-30 01:49:27,939 WARN L193 SmtUtils]: Spent 722.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 86 [2020-11-30 01:49:29,136 WARN L193 SmtUtils]: Spent 953.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 89 [2020-11-30 01:49:29,348 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2020-11-30 01:49:29,688 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 34 [2020-11-30 01:49:30,157 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 38 [2020-11-30 01:49:30,576 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 37 [2020-11-30 01:49:31,060 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 42 [2020-11-30 01:49:32,232 WARN L193 SmtUtils]: Spent 661.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 48 [2020-11-30 01:49:33,153 WARN L193 SmtUtils]: Spent 715.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 39 [2020-11-30 01:49:33,548 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2020-11-30 01:49:34,492 WARN L193 SmtUtils]: Spent 401.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 43 [2020-11-30 01:49:35,441 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 01:49:35,441 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-11-30 01:49:35,441 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 5] total 8 [2020-11-30 01:49:35,442 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043706168] [2020-11-30 01:49:35,442 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-30 01:49:35,442 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:49:35,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-30 01:49:35,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=537, Unknown=0, NotChecked=0, Total=650 [2020-11-30 01:49:35,443 INFO L87 Difference]: Start difference. First operand 381 states and 510 transitions. Second operand 8 states. [2020-11-30 01:49:37,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:49:37,766 INFO L93 Difference]: Finished difference Result 1214 states and 1679 transitions. [2020-11-30 01:49:37,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-11-30 01:49:37,771 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 60 [2020-11-30 01:49:37,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:49:37,776 INFO L225 Difference]: With dead ends: 1214 [2020-11-30 01:49:37,777 INFO L226 Difference]: Without dead ends: 840 [2020-11-30 01:49:37,778 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 153 SyntacticMatches, 12 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 519 ImplicationChecksByTransitivity, 14.5s TimeCoverageRelationStatistics Valid=200, Invalid=990, Unknown=0, NotChecked=0, Total=1190 [2020-11-30 01:49:37,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 840 states. [2020-11-30 01:49:37,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 840 to 523. [2020-11-30 01:49:37,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 523 states. [2020-11-30 01:49:37,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 523 states to 523 states and 682 transitions. [2020-11-30 01:49:37,881 INFO L78 Accepts]: Start accepts. Automaton has 523 states and 682 transitions. Word has length 60 [2020-11-30 01:49:37,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:49:37,882 INFO L481 AbstractCegarLoop]: Abstraction has 523 states and 682 transitions. [2020-11-30 01:49:37,882 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-30 01:49:37,882 INFO L276 IsEmpty]: Start isEmpty. Operand 523 states and 682 transitions. [2020-11-30 01:49:37,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-11-30 01:49:37,884 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:49:37,884 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 2, 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] [2020-11-30 01:49:38,099 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:49:38,099 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr37ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 01:49:38,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:49:38,100 INFO L82 PathProgramCache]: Analyzing trace with hash 1584112789, now seen corresponding path program 1 times [2020-11-30 01:49:38,100 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:49:38,100 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156528518] [2020-11-30 01:49:38,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:49:38,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:49:38,379 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 16 [2020-11-30 01:49:38,526 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-11-30 01:49:38,526 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156528518] [2020-11-30 01:49:38,526 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:49:38,527 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-30 01:49:38,527 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689722540] [2020-11-30 01:49:38,527 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 01:49:38,528 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:49:38,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 01:49:38,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-30 01:49:38,528 INFO L87 Difference]: Start difference. First operand 523 states and 682 transitions. Second operand 5 states. [2020-11-30 01:49:39,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:49:39,436 INFO L93 Difference]: Finished difference Result 1229 states and 1581 transitions. [2020-11-30 01:49:39,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-30 01:49:39,442 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2020-11-30 01:49:39,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:49:39,446 INFO L225 Difference]: With dead ends: 1229 [2020-11-30 01:49:39,447 INFO L226 Difference]: Without dead ends: 762 [2020-11-30 01:49:39,448 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-30 01:49:39,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 762 states. [2020-11-30 01:49:39,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 762 to 579. [2020-11-30 01:49:39,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 579 states. [2020-11-30 01:49:39,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 739 transitions. [2020-11-30 01:49:39,576 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 739 transitions. Word has length 60 [2020-11-30 01:49:39,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:49:39,576 INFO L481 AbstractCegarLoop]: Abstraction has 579 states and 739 transitions. [2020-11-30 01:49:39,576 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 01:49:39,576 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 739 transitions. [2020-11-30 01:49:39,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-11-30 01:49:39,578 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:49:39,578 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 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, 1, 1, 1] [2020-11-30 01:49:39,579 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2020-11-30 01:49:39,579 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr37ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 01:49:39,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:49:39,580 INFO L82 PathProgramCache]: Analyzing trace with hash 1635345351, now seen corresponding path program 1 times [2020-11-30 01:49:39,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:49:39,580 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297234600] [2020-11-30 01:49:39,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:49:39,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:49:40,002 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2020-11-30 01:49:40,002 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297234600] [2020-11-30 01:49:40,002 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:49:40,003 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-30 01:49:40,003 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585838065] [2020-11-30 01:49:40,003 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 01:49:40,003 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:49:40,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 01:49:40,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-30 01:49:40,004 INFO L87 Difference]: Start difference. First operand 579 states and 739 transitions. Second operand 6 states. [2020-11-30 01:49:42,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:49:42,115 INFO L93 Difference]: Finished difference Result 2298 states and 2916 transitions. [2020-11-30 01:49:42,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-30 01:49:42,121 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 66 [2020-11-30 01:49:42,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:49:42,131 INFO L225 Difference]: With dead ends: 2298 [2020-11-30 01:49:42,131 INFO L226 Difference]: Without dead ends: 2209 [2020-11-30 01:49:42,132 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-11-30 01:49:42,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2209 states. [2020-11-30 01:49:42,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2209 to 579. [2020-11-30 01:49:42,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 579 states. [2020-11-30 01:49:42,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 739 transitions. [2020-11-30 01:49:42,271 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 739 transitions. Word has length 66 [2020-11-30 01:49:42,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:49:42,272 INFO L481 AbstractCegarLoop]: Abstraction has 579 states and 739 transitions. [2020-11-30 01:49:42,272 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 01:49:42,272 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 739 transitions. [2020-11-30 01:49:42,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-11-30 01:49:42,274 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:49:42,274 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1] [2020-11-30 01:49:42,274 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2020-11-30 01:49:42,275 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr37ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 01:49:42,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:49:42,275 INFO L82 PathProgramCache]: Analyzing trace with hash -1109163050, now seen corresponding path program 1 times [2020-11-30 01:49:42,276 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:49:42,276 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227016527] [2020-11-30 01:49:42,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:49:42,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:49:42,539 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 15 [2020-11-30 01:49:42,599 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 38 proven. 3 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-11-30 01:49:42,599 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227016527] [2020-11-30 01:49:42,600 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [491196227] [2020-11-30 01:49:42,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9bd0f123-cac5-49dd-93e1-bf420db5422b/bin/utaipan/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:49:42,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:49:42,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-30 01:49:42,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:49:42,850 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-11-30 01:49:42,850 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:49:43,437 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 39 proven. 15 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-11-30 01:49:43,437 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1276329331] [2020-11-30 01:49:43,446 INFO L159 IcfgInterpreter]: Started Sifa with 36 locations of interest [2020-11-30 01:49:43,446 INFO L166 IcfgInterpreter]: Building call graph [2020-11-30 01:49:43,448 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-30 01:49:43,449 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-30 01:49:43,449 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-30 01:49:45,618 WARN L193 SmtUtils]: Spent 617.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 66 [2020-11-30 01:49:46,174 WARN L193 SmtUtils]: Spent 553.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 56 [2020-11-30 01:49:46,367 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-30 01:49:47,048 WARN L193 SmtUtils]: Spent 588.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 77 [2020-11-30 01:49:47,857 WARN L193 SmtUtils]: Spent 647.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 80 [2020-11-30 01:49:48,642 WARN L193 SmtUtils]: Spent 691.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 82 [2020-11-30 01:49:49,533 WARN L193 SmtUtils]: Spent 762.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 85 [2020-11-30 01:49:50,889 WARN L193 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 200 DAG size of output: 196 [2020-11-30 01:49:51,212 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 33 [2020-11-30 01:49:51,861 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-11-30 01:49:52,376 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 36 [2020-11-30 01:49:53,004 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 41 [2020-11-30 01:49:54,167 WARN L193 SmtUtils]: Spent 653.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 47 [2020-11-30 01:49:55,460 WARN L193 SmtUtils]: Spent 501.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 42 [2020-11-30 01:49:59,541 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2020-11-30 01:49:59,541 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [4, 4, 6] total 24 [2020-11-30 01:49:59,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924278285] [2020-11-30 01:49:59,542 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-11-30 01:49:59,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:49:59,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-11-30 01:49:59,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=443, Unknown=0, NotChecked=0, Total=600 [2020-11-30 01:49:59,543 INFO L87 Difference]: Start difference. First operand 579 states and 739 transitions. Second operand 14 states. [2020-11-30 01:50:02,687 WARN L193 SmtUtils]: Spent 1.84 s on a formula simplification. DAG size of input: 197 DAG size of output: 197 [2020-11-30 01:50:03,915 WARN L193 SmtUtils]: Spent 989.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 96 [2020-11-30 01:50:05,265 WARN L193 SmtUtils]: Spent 933.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 95 [2020-11-30 01:50:06,589 WARN L193 SmtUtils]: Spent 963.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 98 [2020-11-30 01:50:07,995 WARN L193 SmtUtils]: Spent 931.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 98 [2020-11-30 01:50:10,012 WARN L193 SmtUtils]: Spent 1.53 s on a formula simplification. DAG size of input: 169 DAG size of output: 163 [2020-11-30 01:50:14,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:50:14,313 INFO L93 Difference]: Finished difference Result 2187 states and 2790 transitions. [2020-11-30 01:50:14,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-30 01:50:14,321 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 66 [2020-11-30 01:50:14,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:50:14,329 INFO L225 Difference]: With dead ends: 2187 [2020-11-30 01:50:14,329 INFO L226 Difference]: Without dead ends: 1666 [2020-11-30 01:50:14,331 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 157 SyntacticMatches, 21 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 454 ImplicationChecksByTransitivity, 22.4s TimeCoverageRelationStatistics Valid=255, Invalid=675, Unknown=0, NotChecked=0, Total=930 [2020-11-30 01:50:14,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1666 states. [2020-11-30 01:50:14,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1666 to 607. [2020-11-30 01:50:14,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 607 states. [2020-11-30 01:50:14,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 767 transitions. [2020-11-30 01:50:14,461 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 767 transitions. Word has length 66 [2020-11-30 01:50:14,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:50:14,461 INFO L481 AbstractCegarLoop]: Abstraction has 607 states and 767 transitions. [2020-11-30 01:50:14,461 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-11-30 01:50:14,462 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 767 transitions. [2020-11-30 01:50:14,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-11-30 01:50:14,464 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:50:14,464 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 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, 1, 1, 1, 1, 1] [2020-11-30 01:50:14,679 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:50:14,679 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr37ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 01:50:14,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:50:14,680 INFO L82 PathProgramCache]: Analyzing trace with hash 610775235, now seen corresponding path program 1 times [2020-11-30 01:50:14,680 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:50:14,680 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857119462] [2020-11-30 01:50:14,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:50:14,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:50:15,075 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 14 [2020-11-30 01:50:15,234 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2020-11-30 01:50:15,235 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857119462] [2020-11-30 01:50:15,235 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:50:15,235 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-30 01:50:15,236 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122985422] [2020-11-30 01:50:15,237 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-30 01:50:15,238 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:50:15,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-30 01:50:15,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-30 01:50:15,239 INFO L87 Difference]: Start difference. First operand 607 states and 767 transitions. Second operand 7 states. [2020-11-30 01:50:18,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:50:18,385 INFO L93 Difference]: Finished difference Result 2340 states and 2958 transitions. [2020-11-30 01:50:18,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-30 01:50:18,392 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 68 [2020-11-30 01:50:18,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:50:18,402 INFO L225 Difference]: With dead ends: 2340 [2020-11-30 01:50:18,403 INFO L226 Difference]: Without dead ends: 2251 [2020-11-30 01:50:18,403 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-11-30 01:50:18,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2251 states. [2020-11-30 01:50:18,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2251 to 596. [2020-11-30 01:50:18,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 596 states. [2020-11-30 01:50:18,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 596 states to 596 states and 754 transitions. [2020-11-30 01:50:18,512 INFO L78 Accepts]: Start accepts. Automaton has 596 states and 754 transitions. Word has length 68 [2020-11-30 01:50:18,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:50:18,513 INFO L481 AbstractCegarLoop]: Abstraction has 596 states and 754 transitions. [2020-11-30 01:50:18,513 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-30 01:50:18,513 INFO L276 IsEmpty]: Start isEmpty. Operand 596 states and 754 transitions. [2020-11-30 01:50:18,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-11-30 01:50:18,515 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:50:18,515 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:50:18,515 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable212 [2020-11-30 01:50:18,515 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr37ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 01:50:18,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:50:18,516 INFO L82 PathProgramCache]: Analyzing trace with hash -1366290542, now seen corresponding path program 1 times [2020-11-30 01:50:18,516 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:50:18,516 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373260190] [2020-11-30 01:50:18,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:50:18,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:50:18,905 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 37 proven. 5 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-11-30 01:50:18,905 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373260190] [2020-11-30 01:50:18,906 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [821529878] [2020-11-30 01:50:18,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9bd0f123-cac5-49dd-93e1-bf420db5422b/bin/utaipan/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:50:19,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:50:19,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-30 01:50:19,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:50:19,717 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-11-30 01:50:19,718 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:50:20,878 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 50 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-11-30 01:50:20,878 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1297322392] [2020-11-30 01:50:20,880 INFO L159 IcfgInterpreter]: Started Sifa with 39 locations of interest [2020-11-30 01:50:20,881 INFO L166 IcfgInterpreter]: Building call graph [2020-11-30 01:50:20,881 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-30 01:50:20,881 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-30 01:50:20,882 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-30 01:50:22,735 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-30 01:50:23,359 WARN L193 SmtUtils]: Spent 519.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 48 [2020-11-30 01:50:24,151 WARN L193 SmtUtils]: Spent 662.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 77 [2020-11-30 01:50:24,974 WARN L193 SmtUtils]: Spent 697.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 79 [2020-11-30 01:50:25,820 WARN L193 SmtUtils]: Spent 674.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 79 [2020-11-30 01:50:26,873 WARN L193 SmtUtils]: Spent 918.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 82 [2020-11-30 01:50:28,191 WARN L193 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 89 DAG size of output: 85 [2020-11-30 01:50:29,177 WARN L193 SmtUtils]: Spent 787.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 88 [2020-11-30 01:50:29,466 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2020-11-30 01:50:29,958 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 34 [2020-11-30 01:50:30,613 WARN L193 SmtUtils]: Spent 456.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 38 [2020-11-30 01:50:31,366 WARN L193 SmtUtils]: Spent 494.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 37 [2020-11-30 01:50:32,088 WARN L193 SmtUtils]: Spent 467.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 42 [2020-11-30 01:50:33,463 WARN L193 SmtUtils]: Spent 666.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2020-11-30 01:50:34,428 WARN L193 SmtUtils]: Spent 728.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 56 [2020-11-30 01:50:35,562 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 32 [2020-11-30 01:50:36,395 WARN L193 SmtUtils]: Spent 573.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-11-30 01:50:37,389 WARN L193 SmtUtils]: Spent 770.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2020-11-30 01:50:37,936 WARN L193 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2020-11-30 01:50:38,507 WARN L193 SmtUtils]: Spent 383.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 36 [2020-11-30 01:50:39,147 WARN L193 SmtUtils]: Spent 395.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 37 [2020-11-30 01:50:39,720 WARN L193 SmtUtils]: Spent 368.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 35 [2020-11-30 01:50:40,412 WARN L193 SmtUtils]: Spent 449.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 43 [2020-11-30 01:50:41,661 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 01:50:41,661 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-11-30 01:50:41,661 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 8] total 16 [2020-11-30 01:50:41,661 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380404302] [2020-11-30 01:50:41,662 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-11-30 01:50:41,662 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:50:41,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-11-30 01:50:41,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=363, Invalid=1119, Unknown=0, NotChecked=0, Total=1482 [2020-11-30 01:50:41,663 INFO L87 Difference]: Start difference. First operand 596 states and 754 transitions. Second operand 17 states. [2020-11-30 01:50:42,370 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 24 [2020-11-30 01:50:42,874 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 21 [2020-11-30 01:50:43,192 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-11-30 01:50:44,793 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-11-30 01:50:49,691 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 25 [2020-11-30 01:50:52,414 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-11-30 01:50:54,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:50:54,042 INFO L93 Difference]: Finished difference Result 5013 states and 6404 transitions. [2020-11-30 01:50:54,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-11-30 01:50:54,048 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 69 [2020-11-30 01:50:54,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:50:54,068 INFO L225 Difference]: With dead ends: 5013 [2020-11-30 01:50:54,068 INFO L226 Difference]: Without dead ends: 4394 [2020-11-30 01:50:54,070 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 163 SyntacticMatches, 12 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2099 ImplicationChecksByTransitivity, 25.9s TimeCoverageRelationStatistics Valid=887, Invalid=4369, Unknown=0, NotChecked=0, Total=5256 [2020-11-30 01:50:54,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4394 states. [2020-11-30 01:50:54,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4394 to 1738. [2020-11-30 01:50:54,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1738 states. [2020-11-30 01:50:54,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1738 states to 1738 states and 2237 transitions. [2020-11-30 01:50:54,431 INFO L78 Accepts]: Start accepts. Automaton has 1738 states and 2237 transitions. Word has length 69 [2020-11-30 01:50:54,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:50:54,431 INFO L481 AbstractCegarLoop]: Abstraction has 1738 states and 2237 transitions. [2020-11-30 01:50:54,431 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-11-30 01:50:54,432 INFO L276 IsEmpty]: Start isEmpty. Operand 1738 states and 2237 transitions. [2020-11-30 01:50:54,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-11-30 01:50:54,435 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:50:54,435 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:50:54,651 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable213 [2020-11-30 01:50:54,651 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr37ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 01:50:54,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:50:54,651 INFO L82 PathProgramCache]: Analyzing trace with hash 645929539, now seen corresponding path program 1 times [2020-11-30 01:50:54,652 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:50:54,652 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312385344] [2020-11-30 01:50:54,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:50:54,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:50:55,024 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 39 proven. 7 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-11-30 01:50:55,025 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312385344] [2020-11-30 01:50:55,025 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [415174921] [2020-11-30 01:50:55,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9bd0f123-cac5-49dd-93e1-bf420db5422b/bin/utaipan/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:50:55,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:50:55,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-30 01:50:55,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:50:55,403 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-11-30 01:50:55,403 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:50:56,398 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 49 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-11-30 01:50:56,398 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2020-11-30 01:50:56,399 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7, 8] total 17 [2020-11-30 01:50:56,399 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618851679] [2020-11-30 01:50:56,399 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 01:50:56,399 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:50:56,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 01:50:56,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2020-11-30 01:50:56,400 INFO L87 Difference]: Start difference. First operand 1738 states and 2237 transitions. Second operand 6 states. [2020-11-30 01:50:57,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:50:57,735 INFO L93 Difference]: Finished difference Result 3826 states and 4903 transitions. [2020-11-30 01:50:57,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 01:50:57,741 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 69 [2020-11-30 01:50:57,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:50:57,756 INFO L225 Difference]: With dead ends: 3826 [2020-11-30 01:50:57,757 INFO L226 Difference]: Without dead ends: 3552 [2020-11-30 01:50:57,758 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 127 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2020-11-30 01:50:57,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3552 states. [2020-11-30 01:50:58,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3552 to 2085. [2020-11-30 01:50:58,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2085 states. [2020-11-30 01:50:58,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2085 states to 2085 states and 2673 transitions. [2020-11-30 01:50:58,120 INFO L78 Accepts]: Start accepts. Automaton has 2085 states and 2673 transitions. Word has length 69 [2020-11-30 01:50:58,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:50:58,121 INFO L481 AbstractCegarLoop]: Abstraction has 2085 states and 2673 transitions. [2020-11-30 01:50:58,121 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 01:50:58,121 INFO L276 IsEmpty]: Start isEmpty. Operand 2085 states and 2673 transitions. [2020-11-30 01:50:58,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-11-30 01:50:58,125 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:50:58,125 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:50:58,351 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable379,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:50:58,351 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr37ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 01:50:58,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:50:58,352 INFO L82 PathProgramCache]: Analyzing trace with hash -1221269771, now seen corresponding path program 1 times [2020-11-30 01:50:58,352 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:50:58,352 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769641026] [2020-11-30 01:50:58,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:50:58,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:50:58,638 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 39 proven. 7 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-11-30 01:50:58,638 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769641026] [2020-11-30 01:50:58,638 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1974957018] [2020-11-30 01:50:58,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9bd0f123-cac5-49dd-93e1-bf420db5422b/bin/utaipan/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:50:58,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:50:58,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 20 conjunts are in the unsatisfiable core [2020-11-30 01:50:58,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:50:59,433 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-11-30 01:51:00,497 WARN L193 SmtUtils]: Spent 459.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2020-11-30 01:51:01,226 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 30 proven. 24 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-11-30 01:51:01,227 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:51:01,921 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 23 [2020-11-30 01:51:20,653 WARN L193 SmtUtils]: Spent 12.42 s on a formula simplification that was a NOOP. DAG size: 28 [2020-11-30 01:51:22,728 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (mod c_ULTIMATE.start_mp_add_~a3~0 256)) (.cse1 (mod c_ULTIMATE.start_mp_add_~partial_sum~0 65536))) (or (<= (div (+ (* .cse0 16777216) (* .cse1 16777216) (- 2147483648)) 4294967296) (div (+ .cse0 .cse1 (- 256)) 256)) (< 254 (mod (+ .cse0 .cse1) 65536)))) is different from true [2020-11-30 01:51:24,790 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 (mod c_ULTIMATE.start_mp_add_~a3~0 256)) (.cse0 (mod c_ULTIMATE.start_mp_add_~carry~0 65536))) (or (<= (div (+ (* .cse0 16777216) (* .cse1 16777216) (- 2147483648)) 4294967296) (div (+ .cse0 .cse1 (- 256)) 256)) (< 254 (mod (+ .cse1 .cse0) 65536)))) is different from true [2020-11-30 01:51:44,298 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 12 trivial. 25 not checked. [2020-11-30 01:51:44,299 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1637815340] [2020-11-30 01:51:44,300 INFO L159 IcfgInterpreter]: Started Sifa with 42 locations of interest [2020-11-30 01:51:44,300 INFO L166 IcfgInterpreter]: Building call graph [2020-11-30 01:51:44,301 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-30 01:51:44,301 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-30 01:51:44,301 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-30 01:51:45,719 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:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:341) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:182) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:134) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2020-11-30 01:51:45,721 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-11-30 01:51:45,721 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 9] total 21 [2020-11-30 01:51:45,721 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508989555] [2020-11-30 01:51:45,722 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-11-30 01:51:45,722 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:51:45,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-11-30 01:51:45,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=284, Unknown=4, NotChecked=70, Total=420 [2020-11-30 01:51:45,723 INFO L87 Difference]: Start difference. First operand 2085 states and 2673 transitions. Second operand 21 states. [2020-11-30 01:51:54,924 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 19 [2020-11-30 01:51:58,658 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 17 [2020-11-30 01:51:59,088 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 24 [2020-11-30 01:52:01,716 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 26 [2020-11-30 01:52:07,413 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 15 [2020-11-30 01:52:07,687 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 17 [2020-11-30 01:52:19,271 WARN L193 SmtUtils]: Spent 1.31 s on a formula simplification. DAG size of input: 95 DAG size of output: 78 [2020-11-30 01:52:21,813 WARN L193 SmtUtils]: Spent 2.28 s on a formula simplification. DAG size of input: 91 DAG size of output: 74 [2020-11-30 01:52:35,906 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 19 [2020-11-30 01:52:59,189 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 17 [2020-11-30 01:52:59,673 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 19 [2020-11-30 01:53:05,666 WARN L193 SmtUtils]: Spent 3.12 s on a formula simplification that was a NOOP. DAG size: 84 [2020-11-30 01:53:09,301 WARN L193 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2020-11-30 01:53:14,236 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 24 [2020-11-30 01:53:23,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:53:23,706 INFO L93 Difference]: Finished difference Result 8107 states and 10294 transitions. [2020-11-30 01:53:23,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-11-30 01:53:23,712 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 72 [2020-11-30 01:53:23,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:53:23,726 INFO L225 Difference]: With dead ends: 8107 [2020-11-30 01:53:23,726 INFO L226 Difference]: Without dead ends: 4212 [2020-11-30 01:53:23,731 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 127 SyntacticMatches, 16 SemanticMatches, 51 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 757 ImplicationChecksByTransitivity, 76.5s TimeCoverageRelationStatistics Valid=548, Invalid=1998, Unknown=12, NotChecked=198, Total=2756 [2020-11-30 01:53:23,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4212 states. [2020-11-30 01:53:24,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4212 to 2310. [2020-11-30 01:53:24,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2310 states. [2020-11-30 01:53:24,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2310 states to 2310 states and 2959 transitions. [2020-11-30 01:53:24,074 INFO L78 Accepts]: Start accepts. Automaton has 2310 states and 2959 transitions. Word has length 72 [2020-11-30 01:53:24,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:53:24,074 INFO L481 AbstractCegarLoop]: Abstraction has 2310 states and 2959 transitions. [2020-11-30 01:53:24,074 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-11-30 01:53:24,074 INFO L276 IsEmpty]: Start isEmpty. Operand 2310 states and 2959 transitions. [2020-11-30 01:53:24,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-11-30 01:53:24,078 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:53:24,078 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:53:24,291 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable380 [2020-11-30 01:53:24,291 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr37ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 01:53:24,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:53:24,291 INFO L82 PathProgramCache]: Analyzing trace with hash -1295705707, now seen corresponding path program 1 times [2020-11-30 01:53:24,291 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:53:24,291 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625951206] [2020-11-30 01:53:24,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:53:24,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:53:24,802 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 39 proven. 7 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-11-30 01:53:24,803 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625951206] [2020-11-30 01:53:24,803 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1559279852] [2020-11-30 01:53:24,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9bd0f123-cac5-49dd-93e1-bf420db5422b/bin/utaipan/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:53:24,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:53:24,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-30 01:53:24,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:53:25,252 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-11-30 01:53:25,252 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:53:26,154 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 40 proven. 15 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-11-30 01:53:26,154 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2020-11-30 01:53:26,154 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8, 8] total 19 [2020-11-30 01:53:26,154 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950979882] [2020-11-30 01:53:26,155 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-30 01:53:26,155 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:53:26,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-30 01:53:26,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2020-11-30 01:53:26,155 INFO L87 Difference]: Start difference. First operand 2310 states and 2959 transitions. Second operand 7 states. [2020-11-30 01:53:27,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:53:27,267 INFO L93 Difference]: Finished difference Result 3909 states and 4979 transitions. [2020-11-30 01:53:27,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-30 01:53:27,284 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 72 [2020-11-30 01:53:27,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:53:27,300 INFO L225 Difference]: With dead ends: 3909 [2020-11-30 01:53:27,300 INFO L226 Difference]: Without dead ends: 3251 [2020-11-30 01:53:27,301 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 133 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2020-11-30 01:53:27,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3251 states. [2020-11-30 01:53:27,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3251 to 2386. [2020-11-30 01:53:27,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2386 states. [2020-11-30 01:53:27,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2386 states to 2386 states and 3049 transitions. [2020-11-30 01:53:27,603 INFO L78 Accepts]: Start accepts. Automaton has 2386 states and 3049 transitions. Word has length 72 [2020-11-30 01:53:27,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:53:27,603 INFO L481 AbstractCegarLoop]: Abstraction has 2386 states and 3049 transitions. [2020-11-30 01:53:27,603 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-30 01:53:27,603 INFO L276 IsEmpty]: Start isEmpty. Operand 2386 states and 3049 transitions. [2020-11-30 01:53:27,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-11-30 01:53:27,606 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:53:27,606 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 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, 1, 1, 1] [2020-11-30 01:53:27,819 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable518 [2020-11-30 01:53:27,819 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr37ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 01:53:27,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:53:27,819 INFO L82 PathProgramCache]: Analyzing trace with hash -1413058456, now seen corresponding path program 1 times [2020-11-30 01:53:27,820 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:53:27,820 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867075608] [2020-11-30 01:53:27,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:53:27,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:53:28,143 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 40 proven. 24 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-30 01:53:28,143 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867075608] [2020-11-30 01:53:28,143 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2628156] [2020-11-30 01:53:28,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9bd0f123-cac5-49dd-93e1-bf420db5422b/bin/utaipan/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:53:28,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:53:28,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-30 01:53:28,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:53:28,389 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-11-30 01:53:28,389 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:53:28,961 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 28 proven. 16 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-11-30 01:53:28,961 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2020-11-30 01:53:28,962 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8, 6] total 15 [2020-11-30 01:53:28,962 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167501408] [2020-11-30 01:53:28,962 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 01:53:28,962 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:53:28,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 01:53:28,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-11-30 01:53:28,963 INFO L87 Difference]: Start difference. First operand 2386 states and 3049 transitions. Second operand 5 states. [2020-11-30 01:53:29,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:53:29,695 INFO L93 Difference]: Finished difference Result 2927 states and 3713 transitions. [2020-11-30 01:53:29,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 01:53:29,701 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 72 [2020-11-30 01:53:29,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:53:29,707 INFO L225 Difference]: With dead ends: 2927 [2020-11-30 01:53:29,708 INFO L226 Difference]: Without dead ends: 2574 [2020-11-30 01:53:29,709 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-11-30 01:53:29,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2574 states. [2020-11-30 01:53:30,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2574 to 2546. [2020-11-30 01:53:30,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2546 states. [2020-11-30 01:53:30,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2546 states to 2546 states and 3256 transitions. [2020-11-30 01:53:30,012 INFO L78 Accepts]: Start accepts. Automaton has 2546 states and 3256 transitions. Word has length 72 [2020-11-30 01:53:30,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:53:30,013 INFO L481 AbstractCegarLoop]: Abstraction has 2546 states and 3256 transitions. [2020-11-30 01:53:30,013 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 01:53:30,013 INFO L276 IsEmpty]: Start isEmpty. Operand 2546 states and 3256 transitions. [2020-11-30 01:53:30,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-11-30 01:53:30,016 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:53:30,017 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:53:30,231 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable519,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:53:30,231 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr37ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 01:53:30,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:53:30,231 INFO L82 PathProgramCache]: Analyzing trace with hash -951154299, now seen corresponding path program 1 times [2020-11-30 01:53:30,232 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:53:30,232 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147709056] [2020-11-30 01:53:30,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:53:30,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:53:30,297 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:53:30,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:53:30,351 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:53:30,389 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-30 01:53:30,390 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 01:53:30,390 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable520 [2020-11-30 01:53:30,493 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 01:53:30 BoogieIcfgContainer [2020-11-30 01:53:30,493 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 01:53:30,494 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 01:53:30,494 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 01:53:30,494 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 01:53:30,495 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:43:13" (3/4) ... [2020-11-30 01:53:30,498 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-30 01:53:30,498 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 01:53:30,499 INFO L168 Benchmark]: Toolchain (without parser) took 618600.58 ms. Allocated memory was 98.6 MB in the beginning and 281.0 MB in the end (delta: 182.5 MB). Free memory was 71.6 MB in the beginning and 68.0 MB in the end (delta: 3.6 MB). Peak memory consumption was 187.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:53:30,499 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 98.6 MB. Free memory is still 55.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:53:30,499 INFO L168 Benchmark]: CACSL2BoogieTranslator took 394.76 ms. Allocated memory is still 98.6 MB. Free memory was 71.6 MB in the beginning and 74.2 MB in the end (delta: -2.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-30 01:53:30,499 INFO L168 Benchmark]: Boogie Procedure Inliner took 71.28 ms. Allocated memory is still 98.6 MB. Free memory was 74.2 MB in the beginning and 72.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:53:30,499 INFO L168 Benchmark]: Boogie Preprocessor took 45.55 ms. Allocated memory is still 98.6 MB. Free memory was 72.2 MB in the beginning and 70.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:53:30,501 INFO L168 Benchmark]: RCFGBuilder took 1215.55 ms. Allocated memory was 98.6 MB in the beginning and 127.9 MB in the end (delta: 29.4 MB). Free memory was 70.7 MB in the beginning and 89.7 MB in the end (delta: -19.1 MB). Peak memory consumption was 29.5 MB. Max. memory is 16.1 GB. [2020-11-30 01:53:30,501 INFO L168 Benchmark]: TraceAbstraction took 616861.25 ms. Allocated memory was 127.9 MB in the beginning and 281.0 MB in the end (delta: 153.1 MB). Free memory was 89.7 MB in the beginning and 68.0 MB in the end (delta: 21.7 MB). Peak memory consumption was 178.0 MB. Max. memory is 16.1 GB. [2020-11-30 01:53:30,501 INFO L168 Benchmark]: Witness Printer took 4.35 ms. Allocated memory is still 281.0 MB. Free memory is still 68.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:53:30,502 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 98.6 MB. Free memory is still 55.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 394.76 ms. Allocated memory is still 98.6 MB. Free memory was 71.6 MB in the beginning and 74.2 MB in the end (delta: -2.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 71.28 ms. Allocated memory is still 98.6 MB. Free memory was 74.2 MB in the beginning and 72.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 45.55 ms. Allocated memory is still 98.6 MB. Free memory was 72.2 MB in the beginning and 70.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1215.55 ms. Allocated memory was 98.6 MB in the beginning and 127.9 MB in the end (delta: 29.4 MB). Free memory was 70.7 MB in the beginning and 89.7 MB in the end (delta: -19.1 MB). Peak memory consumption was 29.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 616861.25 ms. Allocated memory was 127.9 MB in the beginning and 281.0 MB in the end (delta: 153.1 MB). Free memory was 89.7 MB in the beginning and 68.0 MB in the end (delta: 21.7 MB). Peak memory consumption was 178.0 MB. Max. memory is 16.1 GB. * Witness Printer took 4.35 ms. Allocated memory is still 281.0 MB. Free memory is still 68.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 108]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of bitwiseAnd at line 88. Possible FailurePath: [L116] unsigned int a, b, r; [L118] a = __VERIFIER_nondet_uint() [L119] b = __VERIFIER_nondet_uint() [L34] unsigned char a0, a1, a2, a3; [L35] unsigned char b0, b1, b2, b3; [L36] unsigned char r0, r1, r2, r3; [L37] unsigned short carry; [L38] unsigned short partial_sum; [L39] unsigned int r; [L40] unsigned char i; [L41] unsigned char na, nb; [L42] a0 = a [L43] a1 = a >> 8 [L44] a2 = a >> 16U [L45] a3 = a >> 24U [L46] b0 = b [L47] b1 = b >> 8U [L48] b2 = b >> 16U [L49] b3 = b >> 24U [L50] na = (unsigned char)4 [L51] COND TRUE a3 == (unsigned char)0 [L52] EXPR na - 1 [L52] na = na - 1 [L53] COND TRUE a2 == (unsigned char)0 [L54] EXPR na - 1 [L54] na = na - 1 [L55] COND TRUE a1 == (unsigned char)0 [L56] EXPR na - 1 [L56] na = na - 1 [L60] nb = (unsigned char)4 [L61] COND FALSE !(b3 == (unsigned char)0) [L70] carry = (unsigned short)0 [L71] i = (unsigned char)0 [L72] COND TRUE (i < na) || (i < nb) || (carry != (unsigned short)0) [L73] partial_sum = carry [L74] carry = (unsigned short)0 [L75] COND TRUE i < na [L76] COND TRUE i == (unsigned char)0 [L76] EXPR partial_sum + a0 [L76] partial_sum = partial_sum + a0 [L77] COND FALSE !(i == (unsigned char)1) [L78] COND FALSE !(i == (unsigned char)2) [L79] COND FALSE !(i == (unsigned char)3) [L81] COND TRUE i < nb [L82] COND TRUE i == (unsigned char)0 [L82] EXPR partial_sum + b0 [L82] partial_sum = partial_sum + b0 [L83] COND FALSE !(i == (unsigned char)1) [L84] COND FALSE !(i == (unsigned char)2) [L85] COND FALSE !(i == (unsigned char)3) [L87] COND TRUE partial_sum > ((unsigned char)254) [L88] partial_sum = partial_sum & ((unsigned char)255) [L89] carry = (unsigned short)1 [L91] COND TRUE i == (unsigned char)0 [L91] r0 = (unsigned char)partial_sum [L92] COND FALSE !(i == (unsigned char)1) [L93] COND FALSE !(i == (unsigned char)2) [L94] COND FALSE !(i == (unsigned char)3) [L96] EXPR i + (unsigned char)1 [L96] i = i + (unsigned char)1 [L72] COND TRUE (i < na) || (i < nb) || (carry != (unsigned short)0) [L73] partial_sum = carry [L74] carry = (unsigned short)0 [L75] COND FALSE !(i < na) [L81] COND TRUE i < nb [L82] COND FALSE !(i == (unsigned char)0) [L83] COND TRUE i == (unsigned char)1 [L83] EXPR partial_sum + b1 [L83] partial_sum = partial_sum + b1 [L84] COND FALSE !(i == (unsigned char)2) [L85] COND FALSE !(i == (unsigned char)3) [L87] COND TRUE partial_sum > ((unsigned char)254) [L88] partial_sum = partial_sum & ((unsigned char)255) [L89] carry = (unsigned short)1 [L91] COND FALSE !(i == (unsigned char)0) [L92] COND TRUE i == (unsigned char)1 [L92] r1 = (unsigned char)partial_sum [L93] COND FALSE !(i == (unsigned char)2) [L94] COND FALSE !(i == (unsigned char)3) [L96] EXPR i + (unsigned char)1 [L96] i = i + (unsigned char)1 [L72] COND TRUE (i < na) || (i < nb) || (carry != (unsigned short)0) [L73] partial_sum = carry [L74] carry = (unsigned short)0 [L75] COND FALSE !(i < na) [L81] COND TRUE i < nb [L82] COND FALSE !(i == (unsigned char)0) [L83] COND FALSE !(i == (unsigned char)1) [L84] COND TRUE i == (unsigned char)2 [L84] EXPR partial_sum + b2 [L84] partial_sum = partial_sum + b2 [L85] COND FALSE !(i == (unsigned char)3) [L87] COND FALSE !(partial_sum > ((unsigned char)254)) [L91] COND FALSE !(i == (unsigned char)0) [L92] COND FALSE !(i == (unsigned char)1) [L93] COND TRUE i == (unsigned char)2 [L93] r2 = (unsigned char)partial_sum [L94] COND FALSE !(i == (unsigned char)3) [L96] EXPR i + (unsigned char)1 [L96] i = i + (unsigned char)1 [L72] COND TRUE (i < na) || (i < nb) || (carry != (unsigned short)0) [L73] partial_sum = carry [L74] carry = (unsigned short)0 [L75] COND FALSE !(i < na) [L81] COND TRUE i < nb [L82] COND FALSE !(i == (unsigned char)0) [L83] COND FALSE !(i == (unsigned char)1) [L84] COND FALSE !(i == (unsigned char)2) [L85] COND TRUE i == (unsigned char)3 [L85] EXPR partial_sum + b3 [L85] partial_sum = partial_sum + b3 [L87] COND FALSE !(partial_sum > ((unsigned char)254)) [L91] COND FALSE !(i == (unsigned char)0) [L92] COND FALSE !(i == (unsigned char)1) [L93] COND FALSE !(i == (unsigned char)2) [L94] COND TRUE i == (unsigned char)3 [L94] r3 = (unsigned char)partial_sum [L96] EXPR i + (unsigned char)1 [L96] i = i + (unsigned char)1 [L72] COND FALSE !((i < na) || (i < nb) || (carry != (unsigned short)0)) [L99] COND FALSE !(i < (unsigned char)4) [L108] r1 << 8U [L108] r2 << 16U [L108] r3 << 24U - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 99 locations, 38 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 616.6s, OverallIterations: 30, TraceHistogramMax: 4, AutomataDifference: 392.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 4154 SDtfs, 12560 SDslu, 15778 SDs, 0 SdLazy, 14986 SolverSat, 1296 SolverUnsat, 34 SolverUnknown, 0 SolverNotchecked, 119.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2848 GetRequests, 1945 SyntacticMatches, 108 SemanticMatches, 795 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 49409 ImplicationChecksByTransitivity, 433.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2546occurred in iteration=29, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.6s AutomataMinimizationTime, 29 MinimizatonAttempts, 15989 StatesRemovedByMinimization, 28 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.4s SatisfiabilityAnalysisTime, 75.0s InterpolantComputationTime, 2061 NumberOfCodeBlocks, 2061 NumberOfCodeBlocksAsserted, 52 NumberOfCheckSat, 2773 ConstructedInterpolants, 77 QuantifiedInterpolants, 2228039 SizeOfPredicates, 70 NumberOfNonLiveVariables, 2645 ConjunctsInSsa, 172 ConjunctsInUnsatCore, 73 InterpolantComputations, 12 PerfectInterpolantSequences, 1335/1652 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]: 6202, ICFG_INTERPRETER_ENTERED_PROCEDURES: 14, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 243, DAG_INTERPRETER_EARLY_EXITS: 24, TOOLS_POST_APPLICATIONS: 310, TOOLS_POST_TIME[ms]: 3449, TOOLS_POST_CALL_APPLICATIONS: 0, TOOLS_POST_CALL_TIME[ms]: 0, TOOLS_POST_RETURN_APPLICATIONS: 0, TOOLS_POST_RETURN_TIME[ms]: 0, TOOLS_QUANTIFIERELIM_APPLICATIONS: 310, TOOLS_QUANTIFIERELIM_TIME[ms]: 3362, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 1252, FLUID_QUERY_TIME[ms]: 28, FLUID_QUERIES: 577, FLUID_YES_ANSWERS: 2, DOMAIN_JOIN_APPLICATIONS: 8, DOMAIN_JOIN_TIME[ms]: 327, DOMAIN_ALPHA_APPLICATIONS: 2, DOMAIN_ALPHA_TIME[ms]: 65, DOMAIN_WIDEN_APPLICATIONS: 1, DOMAIN_WIDEN_TIME[ms]: 45, DOMAIN_ISSUBSETEQ_APPLICATIONS: 15, DOMAIN_ISSUBSETEQ_TIME[ms]: 101, DOMAIN_ISBOTTOM_APPLICATIONS: 243, DOMAIN_ISBOTTOM_TIME[ms]: 1907, LOOP_SUMMARIZER_APPLICATIONS: 14, LOOP_SUMMARIZER_CACHE_MISSES: 14, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 1278, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 1277, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 15, CALL_SUMMARIZER_APPLICATIONS: 0, CALL_SUMMARIZER_CACHE_MISSES: 0, CALL_SUMMARIZER_OVERALL_TIME[ms]: 0, CALL_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 0, PROCEDURE_GRAPH_BUILDER_TIME[ms]: 7, PATH_EXPR_TIME[ms]: 14, REGEX_TO_DAG_TIME[ms]: 9, DAG_COMPRESSION_TIME[ms]: 139, DAG_COMPRESSION_PROCESSED_NODES: 5750, DAG_COMPRESSION_RETAINED_NODES: 819, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...