./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector/soft_float_2a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5423519d-7aa6-4a1b-a223-f75ef5490f44/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5423519d-7aa6-4a1b-a223-f75ef5490f44/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5423519d-7aa6-4a1b-a223-f75ef5490f44/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5423519d-7aa6-4a1b-a223-f75ef5490f44/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/soft_float_2a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5423519d-7aa6-4a1b-a223-f75ef5490f44/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5423519d-7aa6-4a1b-a223-f75ef5490f44/bin/utaipan-UUZaoUuFF8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f330893f1140a32f6e6dacd6cc5115391759545d59ea17334f6f3b644ed5a51c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:32:41,401 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:32:41,403 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:32:41,442 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:32:41,443 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:32:41,444 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:32:41,446 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:32:41,448 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:32:41,450 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:32:41,452 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:32:41,453 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:32:41,454 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:32:41,455 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:32:41,456 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:32:41,458 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:32:41,459 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:32:41,460 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:32:41,461 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:32:41,464 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:32:41,466 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:32:41,468 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:32:41,469 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:32:41,471 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:32:41,473 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:32:41,477 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:32:41,486 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:32:41,487 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:32:41,488 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:32:41,489 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:32:41,490 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:32:41,492 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:32:41,493 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:32:41,495 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:32:41,496 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:32:41,498 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:32:41,499 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:32:41,500 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:32:41,500 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:32:41,500 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:32:41,502 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:32:41,502 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:32:41,503 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5423519d-7aa6-4a1b-a223-f75ef5490f44/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 01:32:41,551 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:32:41,551 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:32:41,552 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:32:41,552 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:32:41,552 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:32:41,552 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:32:41,553 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:32:41,553 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:32:41,553 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:32:41,553 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:32:41,553 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:32:41,554 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:32:41,554 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:32:41,554 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:32:41,554 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:32:41,555 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:32:41,556 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:32:41,556 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:32:41,556 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:32:41,556 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:32:41,562 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:32:41,564 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:32:41,564 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:32:41,565 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:32:41,565 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:32:41,565 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:32:41,571 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:32:41,572 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:32:41,572 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:32:41,572 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:32:41,573 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:32:41,573 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:32:41,573 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:32:41,574 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:32:41,574 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:32:41,574 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:32:41,574 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:32:41,575 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:32:41,575 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:32:41,575 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_worker_vcloud-master_on_vcloud-master/run_dir_5423519d-7aa6-4a1b-a223-f75ef5490f44/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5423519d-7aa6-4a1b-a223-f75ef5490f44/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f330893f1140a32f6e6dacd6cc5115391759545d59ea17334f6f3b644ed5a51c [2021-11-07 01:32:41,874 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:32:41,908 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:32:41,912 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:32:41,914 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:32:41,915 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:32:41,916 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5423519d-7aa6-4a1b-a223-f75ef5490f44/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/bitvector/soft_float_2a.c.cil.c [2021-11-07 01:32:42,008 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5423519d-7aa6-4a1b-a223-f75ef5490f44/bin/utaipan-UUZaoUuFF8/data/b9089dbc9/d531676723a346bf8e64eddba773865c/FLAG52b125cb1 [2021-11-07 01:32:42,475 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:32:42,475 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5423519d-7aa6-4a1b-a223-f75ef5490f44/sv-benchmarks/c/bitvector/soft_float_2a.c.cil.c [2021-11-07 01:32:42,484 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5423519d-7aa6-4a1b-a223-f75ef5490f44/bin/utaipan-UUZaoUuFF8/data/b9089dbc9/d531676723a346bf8e64eddba773865c/FLAG52b125cb1 [2021-11-07 01:32:42,853 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5423519d-7aa6-4a1b-a223-f75ef5490f44/bin/utaipan-UUZaoUuFF8/data/b9089dbc9/d531676723a346bf8e64eddba773865c [2021-11-07 01:32:42,856 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:32:42,858 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:32:42,860 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:32:42,860 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:32:42,863 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:32:42,864 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:32:42" (1/1) ... [2021-11-07 01:32:42,866 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fda1546 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:32:42, skipping insertion in model container [2021-11-07 01:32:42,866 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:32:42" (1/1) ... [2021-11-07 01:32:42,874 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:32:42,903 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:32:43,076 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5423519d-7aa6-4a1b-a223-f75ef5490f44/sv-benchmarks/c/bitvector/soft_float_2a.c.cil.c[728,741] [2021-11-07 01:32:43,123 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:32:43,135 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:32:43,146 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5423519d-7aa6-4a1b-a223-f75ef5490f44/sv-benchmarks/c/bitvector/soft_float_2a.c.cil.c[728,741] [2021-11-07 01:32:43,174 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:32:43,188 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:32:43,189 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:32:43 WrapperNode [2021-11-07 01:32:43,189 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:32:43,190 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:32:43,191 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:32:43,191 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:32:43,202 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:32:43" (1/1) ... [2021-11-07 01:32:43,227 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:32:43" (1/1) ... [2021-11-07 01:32:43,275 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:32:43,283 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:32:43,284 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:32:43,285 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:32:43,295 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:32:43" (1/1) ... [2021-11-07 01:32:43,295 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:32:43" (1/1) ... [2021-11-07 01:32:43,308 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:32:43" (1/1) ... [2021-11-07 01:32:43,312 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:32:43" (1/1) ... [2021-11-07 01:32:43,320 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:32:43" (1/1) ... [2021-11-07 01:32:43,339 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:32:43" (1/1) ... [2021-11-07 01:32:43,341 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:32:43" (1/1) ... [2021-11-07 01:32:43,344 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:32:43,345 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:32:43,345 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:32:43,345 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:32:43,350 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:32:43" (1/1) ... [2021-11-07 01:32:43,367 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:32:43,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5423519d-7aa6-4a1b-a223-f75ef5490f44/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:32:43,403 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5423519d-7aa6-4a1b-a223-f75ef5490f44/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:32:43,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5423519d-7aa6-4a1b-a223-f75ef5490f44/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:32:43,458 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 01:32:43,459 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:32:43,461 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:32:43,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:32:44,162 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:32:44,167 INFO L299 CfgBuilder]: Removed 24 assume(true) statements. [2021-11-07 01:32:44,169 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:32:44 BoogieIcfgContainer [2021-11-07 01:32:44,169 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:32:44,171 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:32:44,171 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:32:44,175 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:32:44,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:32:42" (1/3) ... [2021-11-07 01:32:44,176 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71de9d7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:32:44, skipping insertion in model container [2021-11-07 01:32:44,177 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:32:43" (2/3) ... [2021-11-07 01:32:44,177 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71de9d7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:32:44, skipping insertion in model container [2021-11-07 01:32:44,177 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:32:44" (3/3) ... [2021-11-07 01:32:44,178 INFO L111 eAbstractionObserver]: Analyzing ICFG soft_float_2a.c.cil.c [2021-11-07 01:32:44,184 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:32:44,184 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-07 01:32:44,235 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:32:44,242 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 01:32:44,242 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-07 01:32:44,260 INFO L276 IsEmpty]: Start isEmpty. Operand has 55 states, 53 states have (on average 1.7735849056603774) internal successors, (94), 54 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:32:44,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-07 01:32:44,267 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:32:44,267 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:32:44,268 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:32:44,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:32:44,273 INFO L85 PathProgramCache]: Analyzing trace with hash 1888755228, now seen corresponding path program 1 times [2021-11-07 01:32:44,282 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:32:44,282 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52143147] [2021-11-07 01:32:44,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:32:44,284 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:32:44,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:32:44,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:32:44,521 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:32:44,521 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52143147] [2021-11-07 01:32:44,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52143147] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:32:44,522 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:32:44,523 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 01:32:44,525 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781466234] [2021-11-07 01:32:44,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:32:44,530 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:32:44,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:32:44,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:32:44,546 INFO L87 Difference]: Start difference. First operand has 55 states, 53 states have (on average 1.7735849056603774) internal successors, (94), 54 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:32:44,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:32:44,641 INFO L93 Difference]: Finished difference Result 101 states and 170 transitions. [2021-11-07 01:32:44,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:32:44,643 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-11-07 01:32:44,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:32:44,653 INFO L225 Difference]: With dead ends: 101 [2021-11-07 01:32:44,653 INFO L226 Difference]: Without dead ends: 53 [2021-11-07 01:32:44,656 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:32:44,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-11-07 01:32:44,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 50. [2021-11-07 01:32:44,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.530612244897959) internal successors, (75), 49 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:32:44,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 75 transitions. [2021-11-07 01:32:44,697 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 75 transitions. Word has length 14 [2021-11-07 01:32:44,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:32:44,697 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 75 transitions. [2021-11-07 01:32:44,698 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:32:44,698 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 75 transitions. [2021-11-07 01:32:44,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-07 01:32:44,699 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:32:44,699 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:32:44,700 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 01:32:44,700 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:32:44,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:32:44,701 INFO L85 PathProgramCache]: Analyzing trace with hash -1006311985, now seen corresponding path program 1 times [2021-11-07 01:32:44,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:32:44,702 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067462719] [2021-11-07 01:32:44,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:32:44,702 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:32:44,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:32:44,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:32:44,753 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:32:44,753 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067462719] [2021-11-07 01:32:44,753 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067462719] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:32:44,754 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:32:44,754 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 01:32:44,754 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198387304] [2021-11-07 01:32:44,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:32:44,756 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:32:44,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:32:44,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:32:44,757 INFO L87 Difference]: Start difference. First operand 50 states and 75 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:32:44,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:32:44,815 INFO L93 Difference]: Finished difference Result 99 states and 147 transitions. [2021-11-07 01:32:44,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:32:44,816 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-11-07 01:32:44,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:32:44,817 INFO L225 Difference]: With dead ends: 99 [2021-11-07 01:32:44,818 INFO L226 Difference]: Without dead ends: 59 [2021-11-07 01:32:44,819 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:32:44,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-11-07 01:32:44,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 57. [2021-11-07 01:32:44,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.4821428571428572) internal successors, (83), 56 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:32:44,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 83 transitions. [2021-11-07 01:32:44,828 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 83 transitions. Word has length 17 [2021-11-07 01:32:44,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:32:44,829 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 83 transitions. [2021-11-07 01:32:44,829 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:32:44,829 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 83 transitions. [2021-11-07 01:32:44,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-07 01:32:44,831 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:32:44,831 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:32:44,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 01:32:44,832 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:32:44,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:32:44,832 INFO L85 PathProgramCache]: Analyzing trace with hash -456939504, now seen corresponding path program 1 times [2021-11-07 01:32:44,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:32:44,833 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955180069] [2021-11-07 01:32:44,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:32:44,833 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:32:44,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:32:44,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:32:44,938 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:32:44,938 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955180069] [2021-11-07 01:32:44,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955180069] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:32:44,939 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:32:44,939 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 01:32:44,939 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192464788] [2021-11-07 01:32:44,940 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:32:44,940 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:32:44,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:32:44,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:32:44,941 INFO L87 Difference]: Start difference. First operand 57 states and 83 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:32:45,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:32:45,086 INFO L93 Difference]: Finished difference Result 105 states and 152 transitions. [2021-11-07 01:32:45,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:32:45,087 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-11-07 01:32:45,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:32:45,091 INFO L225 Difference]: With dead ends: 105 [2021-11-07 01:32:45,091 INFO L226 Difference]: Without dead ends: 56 [2021-11-07 01:32:45,092 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:32:45,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-11-07 01:32:45,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 52. [2021-11-07 01:32:45,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.4509803921568627) internal successors, (74), 51 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:32:45,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 74 transitions. [2021-11-07 01:32:45,106 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 74 transitions. Word has length 19 [2021-11-07 01:32:45,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:32:45,107 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 74 transitions. [2021-11-07 01:32:45,107 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:32:45,107 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 74 transitions. [2021-11-07 01:32:45,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-07 01:32:45,108 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:32:45,108 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:32:45,109 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 01:32:45,109 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:32:45,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:32:45,110 INFO L85 PathProgramCache]: Analyzing trace with hash -1701670322, now seen corresponding path program 1 times [2021-11-07 01:32:45,110 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:32:45,110 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361888493] [2021-11-07 01:32:45,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:32:45,111 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:32:45,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:32:45,192 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:32:45,193 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:32:45,193 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361888493] [2021-11-07 01:32:45,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361888493] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 01:32:45,193 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [585548785] [2021-11-07 01:32:45,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:32:45,194 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:32:45,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5423519d-7aa6-4a1b-a223-f75ef5490f44/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:32:45,203 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5423519d-7aa6-4a1b-a223-f75ef5490f44/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:32:45,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5423519d-7aa6-4a1b-a223-f75ef5490f44/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-07 01:32:45,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:32:45,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:32:45,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:32:45,420 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:32:45,421 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:32:45,506 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:32:45,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [585548785] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:32:45,507 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [143975105] [2021-11-07 01:32:45,532 INFO L159 IcfgInterpreter]: Started Sifa with 19 locations of interest [2021-11-07 01:32:45,533 INFO L166 IcfgInterpreter]: Building call graph [2021-11-07 01:32:45,538 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-07 01:32:45,544 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-07 01:32:45,545 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-07 01:32:45,605 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:32:45,613 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:32:45,614 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:32:45,615 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-07 01:32:45,616 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:32:45,617 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:32:45,618 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-07 01:32:45,624 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 147 [2021-11-07 01:32:45,658 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_9|], 21=[|v_#valid_10|]} [2021-11-07 01:32:45,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:32:45,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:32:45,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:32:45,692 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-11-07 01:32:45,693 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:32:45,695 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 01:32:45,697 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:32:45,697 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 01:32:45,698 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 01:32:45,701 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:32:45,756 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:32:45,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:32:45,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:32:45,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:32:45,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:32:45,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:32:45,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:32:45,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:32:45,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:32:45,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:32:45,801 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-11-07 01:32:45,804 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:32:45,808 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-07 01:32:45,809 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:32:45,810 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-07 01:32:45,811 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-07 01:32:45,811 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:32:45,834 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:32:45,843 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:32:45,848 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 119 [2021-11-07 01:32:45,854 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-07 01:32:45,854 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:119 [2021-11-07 01:32:45,873 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:32:45,893 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 122 [2021-11-07 01:32:45,922 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:32:45,941 INFO L185 QuantifierPusher]: treesize reduction 6, result has 95.8 percent of original size 137 [2021-11-07 01:32:45,971 INFO L180 QuantifierPusher]: treesize reduction 7, result has 95.8 percent of original size [2021-11-07 01:32:45,991 INFO L185 QuantifierPusher]: treesize reduction 7, result has 95.4 percent of original size 144 [2021-11-07 01:32:45,996 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:32:46,045 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:32:46,094 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:32:46,180 INFO L180 QuantifierPusher]: treesize reduction 11, result has 97.1 percent of original size [2021-11-07 01:32:46,216 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 375 [2021-11-07 01:32:46,225 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:32:46,299 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:32:46,301 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:32:46,305 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:32:46,307 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:32:46,309 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:32:46,340 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:32:46,356 INFO L180 QuantifierPusher]: treesize reduction 49, result has 61.7 percent of original size [2021-11-07 01:32:46,369 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-11-07 01:32:46,380 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:32:46,397 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:32:46,418 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:32:46,432 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:32:46,470 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:32:46,485 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:32:46,501 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:32:46,514 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:32:46,561 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:32:46,584 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:32:46,602 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:32:46,606 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:32:46,640 INFO L180 QuantifierPusher]: treesize reduction 3, result has 98.9 percent of original size [2021-11-07 01:32:46,647 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:32:46,650 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:32:46,658 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 177 [2021-11-07 01:32:46,659 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:32:46,663 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:32:46,678 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 160 [2021-11-07 01:32:46,679 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:32:46,683 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:32:46,691 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:32:46,694 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:32:46,700 INFO L185 QuantifierPusher]: treesize reduction 119, result has 24.2 percent of original size 38 [2021-11-07 01:32:46,705 INFO L185 QuantifierPusher]: treesize reduction 119, result has 24.2 percent of original size 38 [2021-11-07 01:32:46,715 INFO L185 QuantifierPusher]: treesize reduction 36, result has 63.3 percent of original size 62 [2021-11-07 01:32:46,723 INFO L180 QuantifierPusher]: treesize reduction 36, result has 70.5 percent of original size [2021-11-07 01:32:46,727 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-11-07 01:32:46,736 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:32:46,742 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 171 [2021-11-07 01:32:46,758 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:32:46,766 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 255 [2021-11-07 01:32:46,774 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-07 01:32:49,571 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [143975105] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:32:49,572 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2021-11-07 01:32:49,572 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [4, 4, 4] total 21 [2021-11-07 01:32:49,573 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156064219] [2021-11-07 01:32:49,573 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-07 01:32:49,573 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:32:49,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-07 01:32:49,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2021-11-07 01:32:49,574 INFO L87 Difference]: Start difference. First operand 52 states and 74 transitions. Second operand has 16 states, 16 states have (on average 1.1875) internal successors, (19), 15 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:32:50,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:32:50,433 INFO L93 Difference]: Finished difference Result 132 states and 189 transitions. [2021-11-07 01:32:50,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-07 01:32:50,434 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.1875) internal successors, (19), 15 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-07 01:32:50,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:32:50,435 INFO L225 Difference]: With dead ends: 132 [2021-11-07 01:32:50,435 INFO L226 Difference]: Without dead ends: 77 [2021-11-07 01:32:50,436 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=89, Invalid=373, Unknown=0, NotChecked=0, Total=462 [2021-11-07 01:32:50,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-11-07 01:32:50,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 49. [2021-11-07 01:32:50,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.4375) internal successors, (69), 48 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:32:50,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 69 transitions. [2021-11-07 01:32:50,449 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 69 transitions. Word has length 20 [2021-11-07 01:32:50,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:32:50,451 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 69 transitions. [2021-11-07 01:32:50,453 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.1875) internal successors, (19), 15 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:32:50,453 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 69 transitions. [2021-11-07 01:32:50,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-07 01:32:50,457 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:32:50,458 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:32:50,499 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5423519d-7aa6-4a1b-a223-f75ef5490f44/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-07 01:32:50,681 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5423519d-7aa6-4a1b-a223-f75ef5490f44/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:32:50,682 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:32:50,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:32:50,682 INFO L85 PathProgramCache]: Analyzing trace with hash 1318596815, now seen corresponding path program 1 times [2021-11-07 01:32:50,683 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:32:50,683 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790510808] [2021-11-07 01:32:50,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:32:50,683 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:32:50,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:32:50,761 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:32:50,761 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:32:50,762 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790510808] [2021-11-07 01:32:50,762 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790510808] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 01:32:50,762 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [50769585] [2021-11-07 01:32:50,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:32:50,763 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:32:50,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5423519d-7aa6-4a1b-a223-f75ef5490f44/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:32:50,764 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5423519d-7aa6-4a1b-a223-f75ef5490f44/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:32:50,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5423519d-7aa6-4a1b-a223-f75ef5490f44/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-07 01:32:50,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:32:50,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-07 01:32:50,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:32:51,000 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:32:51,000 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:32:51,235 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:32:51,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [50769585] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:32:51,236 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-11-07 01:32:51,236 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [5] total 15 [2021-11-07 01:32:51,236 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736675656] [2021-11-07 01:32:51,236 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-07 01:32:51,237 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:32:51,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-07 01:32:51,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2021-11-07 01:32:51,238 INFO L87 Difference]: Start difference. First operand 49 states and 69 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:32:51,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:32:51,444 INFO L93 Difference]: Finished difference Result 71 states and 95 transitions. [2021-11-07 01:32:51,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-07 01:32:51,445 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-11-07 01:32:51,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:32:51,446 INFO L225 Difference]: With dead ends: 71 [2021-11-07 01:32:51,446 INFO L226 Difference]: Without dead ends: 63 [2021-11-07 01:32:51,446 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=106, Invalid=356, Unknown=0, NotChecked=0, Total=462 [2021-11-07 01:32:51,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-11-07 01:32:51,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 49. [2021-11-07 01:32:51,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.3958333333333333) internal successors, (67), 48 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:32:51,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 67 transitions. [2021-11-07 01:32:51,453 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 67 transitions. Word has length 22 [2021-11-07 01:32:51,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:32:51,456 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 67 transitions. [2021-11-07 01:32:51,457 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:32:51,457 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 67 transitions. [2021-11-07 01:32:51,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-07 01:32:51,461 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:32:51,465 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:32:51,506 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5423519d-7aa6-4a1b-a223-f75ef5490f44/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-07 01:32:51,679 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5423519d-7aa6-4a1b-a223-f75ef5490f44/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-11-07 01:32:51,679 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:32:51,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:32:51,680 INFO L85 PathProgramCache]: Analyzing trace with hash -2077597791, now seen corresponding path program 1 times [2021-11-07 01:32:51,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:32:51,680 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822106760] [2021-11-07 01:32:51,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:32:51,680 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:32:51,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:32:51,831 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:32:51,831 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:32:51,831 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822106760] [2021-11-07 01:32:51,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822106760] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 01:32:51,832 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [39986181] [2021-11-07 01:32:51,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:32:51,832 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:32:51,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5423519d-7aa6-4a1b-a223-f75ef5490f44/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:32:51,833 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5423519d-7aa6-4a1b-a223-f75ef5490f44/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:32:51,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5423519d-7aa6-4a1b-a223-f75ef5490f44/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-07 01:32:51,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:32:51,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-07 01:32:51,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:32:52,080 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:32:52,080 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:32:52,233 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:32:52,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [39986181] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:32:52,233 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-11-07 01:32:52,234 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 5] imperfect sequences [5] total 11 [2021-11-07 01:32:52,234 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179674636] [2021-11-07 01:32:52,234 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:32:52,234 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:32:52,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:32:52,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-11-07 01:32:52,236 INFO L87 Difference]: Start difference. First operand 49 states and 67 transitions. Second operand has 8 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:32:52,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:32:52,419 INFO L93 Difference]: Finished difference Result 76 states and 103 transitions. [2021-11-07 01:32:52,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 01:32:52,420 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-11-07 01:32:52,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:32:52,421 INFO L225 Difference]: With dead ends: 76 [2021-11-07 01:32:52,421 INFO L226 Difference]: Without dead ends: 47 [2021-11-07 01:32:52,422 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2021-11-07 01:32:52,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-11-07 01:32:52,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 45. [2021-11-07 01:32:52,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 44 states have (on average 1.3181818181818181) internal successors, (58), 44 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:32:52,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 58 transitions. [2021-11-07 01:32:52,428 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 58 transitions. Word has length 23 [2021-11-07 01:32:52,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:32:52,428 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 58 transitions. [2021-11-07 01:32:52,428 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:32:52,428 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 58 transitions. [2021-11-07 01:32:52,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-07 01:32:52,429 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:32:52,429 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-07 01:32:52,465 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5423519d-7aa6-4a1b-a223-f75ef5490f44/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-07 01:32:52,630 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5423519d-7aa6-4a1b-a223-f75ef5490f44/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:32:52,630 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:32:52,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:32:52,631 INFO L85 PathProgramCache]: Analyzing trace with hash 1372344536, now seen corresponding path program 1 times [2021-11-07 01:32:52,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:32:52,631 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120603254] [2021-11-07 01:32:52,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:32:52,631 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:32:52,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:32:52,663 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:32:52,663 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:32:52,664 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120603254] [2021-11-07 01:32:52,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120603254] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 01:32:52,664 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [836306156] [2021-11-07 01:32:52,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:32:52,664 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:32:52,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5423519d-7aa6-4a1b-a223-f75ef5490f44/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:32:52,665 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5423519d-7aa6-4a1b-a223-f75ef5490f44/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:32:52,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5423519d-7aa6-4a1b-a223-f75ef5490f44/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-07 01:32:52,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:32:52,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:32:52,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:32:52,842 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:32:52,842 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:32:52,932 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:32:52,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [836306156] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:32:52,933 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [770721761] [2021-11-07 01:32:52,936 INFO L159 IcfgInterpreter]: Started Sifa with 28 locations of interest [2021-11-07 01:32:52,936 INFO L166 IcfgInterpreter]: Building call graph [2021-11-07 01:32:52,937 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-07 01:32:52,937 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-07 01:32:52,937 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-07 01:32:52,953 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:32:52,955 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:32:52,955 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:32:52,956 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-07 01:32:52,956 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:32:52,957 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:32:52,957 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-07 01:32:52,963 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 147 [2021-11-07 01:32:52,967 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_10|], 21=[|v_#valid_11|]} [2021-11-07 01:32:52,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:32:52,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:32:52,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:32:52,981 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-11-07 01:32:52,983 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:32:52,984 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 01:32:52,984 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:32:52,985 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 01:32:52,985 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 01:32:52,986 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:32:52,990 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:32:52,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:32:52,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:32:52,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:32:52,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:32:53,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:32:53,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:32:53,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:32:53,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:32:53,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:32:53,015 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-11-07 01:32:53,016 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:32:53,018 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-07 01:32:53,019 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:32:53,020 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-07 01:32:53,020 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-07 01:32:53,020 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:32:53,035 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:32:53,037 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:32:53,039 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 119 [2021-11-07 01:32:53,040 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-07 01:32:53,040 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:119 [2021-11-07 01:32:53,048 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:32:53,054 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 122 [2021-11-07 01:32:53,062 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:32:53,067 INFO L185 QuantifierPusher]: treesize reduction 6, result has 95.8 percent of original size 137 [2021-11-07 01:32:53,071 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:32:53,085 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:32:53,100 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:32:53,137 INFO L180 QuantifierPusher]: treesize reduction 6, result has 98.3 percent of original size [2021-11-07 01:32:53,153 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 365 [2021-11-07 01:32:53,162 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:32:53,205 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:32:53,207 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:32:53,209 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:32:53,210 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:32:53,211 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:32:53,217 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:32:53,227 INFO L180 QuantifierPusher]: treesize reduction 49, result has 59.5 percent of original size [2021-11-07 01:32:53,230 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-11-07 01:32:53,241 INFO L180 QuantifierPusher]: treesize reduction 51, result has 60.2 percent of original size [2021-11-07 01:32:53,245 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-11-07 01:32:53,258 INFO L180 QuantifierPusher]: treesize reduction 8, result has 90.5 percent of original size [2021-11-07 01:32:53,261 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 72 [2021-11-07 01:32:53,264 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:32:53,268 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 72 [2021-11-07 01:32:53,280 INFO L180 QuantifierPusher]: treesize reduction 8, result has 91.5 percent of original size [2021-11-07 01:32:53,283 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-11-07 01:32:53,289 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:32:53,293 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 175 [2021-11-07 01:32:53,342 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:32:53,349 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 340 [2021-11-07 01:32:53,367 INFO L180 QuantifierPusher]: treesize reduction 49, result has 59.5 percent of original size [2021-11-07 01:32:53,369 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-11-07 01:32:53,370 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-07 01:33:00,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [770721761] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:33:00,401 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2021-11-07 01:33:00,401 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [4, 4, 4] total 27 [2021-11-07 01:33:00,402 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741272768] [2021-11-07 01:33:00,402 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-07 01:33:00,403 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:33:00,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-07 01:33:00,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=600, Unknown=0, NotChecked=0, Total=702 [2021-11-07 01:33:00,404 INFO L87 Difference]: Start difference. First operand 45 states and 58 transitions. Second operand has 22 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 21 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:33:02,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:33:02,151 INFO L93 Difference]: Finished difference Result 98 states and 122 transitions. [2021-11-07 01:33:02,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-07 01:33:02,152 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 21 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-11-07 01:33:02,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:33:02,152 INFO L225 Difference]: With dead ends: 98 [2021-11-07 01:33:02,152 INFO L226 Difference]: Without dead ends: 90 [2021-11-07 01:33:02,153 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 63 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=107, Invalid=649, Unknown=0, NotChecked=0, Total=756 [2021-11-07 01:33:02,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2021-11-07 01:33:02,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 63. [2021-11-07 01:33:02,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.2903225806451613) internal successors, (80), 62 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:33:02,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 80 transitions. [2021-11-07 01:33:02,165 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 80 transitions. Word has length 29 [2021-11-07 01:33:02,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:33:02,166 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 80 transitions. [2021-11-07 01:33:02,166 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 21 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:33:02,166 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 80 transitions. [2021-11-07 01:33:02,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-07 01:33:02,167 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:33:02,167 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-07 01:33:02,192 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5423519d-7aa6-4a1b-a223-f75ef5490f44/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-11-07 01:33:02,373 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5423519d-7aa6-4a1b-a223-f75ef5490f44/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:33:02,374 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:33:02,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:33:02,374 INFO L85 PathProgramCache]: Analyzing trace with hash -1174641252, now seen corresponding path program 1 times [2021-11-07 01:33:02,374 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:33:02,375 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449115773] [2021-11-07 01:33:02,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:33:02,375 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:33:02,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:33:02,420 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:33:02,420 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:33:02,420 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449115773] [2021-11-07 01:33:02,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449115773] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 01:33:02,421 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2031677618] [2021-11-07 01:33:02,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:33:02,421 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:33:02,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5423519d-7aa6-4a1b-a223-f75ef5490f44/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:33:02,432 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5423519d-7aa6-4a1b-a223-f75ef5490f44/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:33:02,449 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5423519d-7aa6-4a1b-a223-f75ef5490f44/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-07 01:33:02,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:33:02,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:33:02,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:33:02,623 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:33:02,623 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:33:02,714 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:33:02,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2031677618] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:33:02,714 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [313560948] [2021-11-07 01:33:02,719 INFO L159 IcfgInterpreter]: Started Sifa with 28 locations of interest [2021-11-07 01:33:02,719 INFO L166 IcfgInterpreter]: Building call graph [2021-11-07 01:33:02,719 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-07 01:33:02,719 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-07 01:33:02,720 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-07 01:33:02,735 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:33:02,736 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:33:02,737 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:33:02,738 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-07 01:33:02,738 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:33:02,738 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:33:02,739 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-07 01:33:02,741 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 147 [2021-11-07 01:33:02,745 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_11|], 21=[|v_#valid_12|]} [2021-11-07 01:33:02,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:33:02,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:33:02,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:33:02,759 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-11-07 01:33:02,759 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:33:02,760 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 01:33:02,763 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:33:02,766 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 01:33:02,766 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 01:33:02,767 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:33:02,771 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:33:02,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:33:02,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:33:02,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:33:02,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:33:02,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:33:02,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:33:02,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:33:02,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:33:02,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:33:02,793 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-11-07 01:33:02,793 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:33:02,796 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-07 01:33:02,797 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:33:02,797 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-07 01:33:02,797 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-07 01:33:02,798 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:33:02,803 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:33:02,804 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:33:02,806 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 119 [2021-11-07 01:33:02,807 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-07 01:33:02,807 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:119 [2021-11-07 01:33:02,815 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:33:02,819 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 122 [2021-11-07 01:33:02,828 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:33:02,831 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 143 [2021-11-07 01:33:02,835 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:33:02,853 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:33:02,867 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:33:02,896 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:33:02,909 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 376 [2021-11-07 01:33:02,919 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:33:02,968 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:33:02,970 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:33:02,971 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:33:02,972 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:33:02,974 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:33:02,979 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:33:02,987 INFO L180 QuantifierPusher]: treesize reduction 49, result has 59.5 percent of original size [2021-11-07 01:33:02,990 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-11-07 01:33:02,999 INFO L180 QuantifierPusher]: treesize reduction 51, result has 60.2 percent of original size [2021-11-07 01:33:03,003 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-11-07 01:33:03,012 INFO L180 QuantifierPusher]: treesize reduction 8, result has 90.5 percent of original size [2021-11-07 01:33:03,016 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 72 [2021-11-07 01:33:03,019 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:33:03,022 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 72 [2021-11-07 01:33:03,036 INFO L180 QuantifierPusher]: treesize reduction 10, result has 94.9 percent of original size [2021-11-07 01:33:03,042 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 178 [2021-11-07 01:33:03,071 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:33:03,078 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 343 [2021-11-07 01:33:03,087 INFO L180 QuantifierPusher]: treesize reduction 49, result has 59.5 percent of original size [2021-11-07 01:33:03,089 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-11-07 01:33:03,090 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-07 01:33:07,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [313560948] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:33:07,095 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2021-11-07 01:33:07,095 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [4, 4, 4] total 27 [2021-11-07 01:33:07,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139733043] [2021-11-07 01:33:07,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-07 01:33:07,096 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:33:07,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-07 01:33:07,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=560, Unknown=0, NotChecked=0, Total=702 [2021-11-07 01:33:07,098 INFO L87 Difference]: Start difference. First operand 63 states and 80 transitions. Second operand has 22 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 21 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:33:08,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:33:08,115 INFO L93 Difference]: Finished difference Result 91 states and 112 transitions. [2021-11-07 01:33:08,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-07 01:33:08,116 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 21 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-11-07 01:33:08,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:33:08,117 INFO L225 Difference]: With dead ends: 91 [2021-11-07 01:33:08,117 INFO L226 Difference]: Without dead ends: 83 [2021-11-07 01:33:08,119 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 63 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 281 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=147, Invalid=609, Unknown=0, NotChecked=0, Total=756 [2021-11-07 01:33:08,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-11-07 01:33:08,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 64. [2021-11-07 01:33:08,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 1.3015873015873016) internal successors, (82), 63 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:33:08,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 82 transitions. [2021-11-07 01:33:08,129 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 82 transitions. Word has length 29 [2021-11-07 01:33:08,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:33:08,129 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 82 transitions. [2021-11-07 01:33:08,130 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 21 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:33:08,130 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 82 transitions. [2021-11-07 01:33:08,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-07 01:33:08,131 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:33:08,131 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-07 01:33:08,173 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5423519d-7aa6-4a1b-a223-f75ef5490f44/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-07 01:33:08,357 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5423519d-7aa6-4a1b-a223-f75ef5490f44/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2021-11-07 01:33:08,358 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:33:08,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:33:08,358 INFO L85 PathProgramCache]: Analyzing trace with hash 1390592668, now seen corresponding path program 1 times [2021-11-07 01:33:08,358 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:33:08,358 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68614856] [2021-11-07 01:33:08,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:33:08,359 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:33:08,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:33:08,402 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:33:08,402 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:33:08,404 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68614856] [2021-11-07 01:33:08,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68614856] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 01:33:08,405 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [264810580] [2021-11-07 01:33:08,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:33:08,405 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:33:08,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5423519d-7aa6-4a1b-a223-f75ef5490f44/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:33:08,422 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5423519d-7aa6-4a1b-a223-f75ef5490f44/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:33:08,437 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5423519d-7aa6-4a1b-a223-f75ef5490f44/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-07 01:33:08,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:33:08,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:33:08,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:33:08,617 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:33:08,617 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:33:08,692 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:33:08,692 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [264810580] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:33:08,692 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1698965708] [2021-11-07 01:33:08,695 INFO L159 IcfgInterpreter]: Started Sifa with 28 locations of interest [2021-11-07 01:33:08,695 INFO L166 IcfgInterpreter]: Building call graph [2021-11-07 01:33:08,695 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-07 01:33:08,696 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-07 01:33:08,696 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-07 01:33:08,704 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:33:08,705 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:33:08,706 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:33:08,707 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-07 01:33:08,707 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:33:08,707 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:33:08,708 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-07 01:33:08,709 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 147 [2021-11-07 01:33:08,712 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_12|], 21=[|v_#valid_13|]} [2021-11-07 01:33:08,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:33:08,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:33:08,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:33:08,723 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-11-07 01:33:08,724 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:33:08,724 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 01:33:08,725 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:33:08,725 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 01:33:08,726 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 01:33:08,726 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:33:08,730 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:33:08,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:33:08,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:33:08,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:33:08,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:33:08,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:33:08,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:33:08,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:33:08,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:33:08,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:33:08,748 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-11-07 01:33:08,752 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:33:08,754 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-07 01:33:08,755 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:33:08,755 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-07 01:33:08,755 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-07 01:33:08,756 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:33:08,759 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:33:08,761 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:33:08,763 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 119 [2021-11-07 01:33:08,763 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-07 01:33:08,764 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:119 [2021-11-07 01:33:08,772 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:33:08,776 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 122 [2021-11-07 01:33:08,784 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:33:08,787 INFO L185 QuantifierPusher]: treesize reduction 6, result has 95.8 percent of original size 137 [2021-11-07 01:33:08,791 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:33:08,816 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:33:08,841 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:33:08,902 INFO L180 QuantifierPusher]: treesize reduction 6, result has 98.3 percent of original size [2021-11-07 01:33:08,911 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 365 [2021-11-07 01:33:08,918 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:33:08,956 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:33:08,957 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:33:08,958 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:33:08,959 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:33:08,960 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:33:08,965 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:33:08,991 INFO L180 QuantifierPusher]: treesize reduction 49, result has 59.5 percent of original size [2021-11-07 01:33:08,993 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-11-07 01:33:09,002 INFO L180 QuantifierPusher]: treesize reduction 51, result has 60.2 percent of original size [2021-11-07 01:33:09,005 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-11-07 01:33:09,016 INFO L180 QuantifierPusher]: treesize reduction 12, result has 88.1 percent of original size [2021-11-07 01:33:09,019 INFO L185 QuantifierPusher]: treesize reduction 5, result has 93.2 percent of original size 68 [2021-11-07 01:33:09,029 INFO L180 QuantifierPusher]: treesize reduction 13, result has 86.3 percent of original size [2021-11-07 01:33:09,032 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 78 [2021-11-07 01:33:09,037 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:33:09,041 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 171 [2021-11-07 01:33:09,063 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:33:09,069 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 336 [2021-11-07 01:33:09,077 INFO L180 QuantifierPusher]: treesize reduction 49, result has 59.5 percent of original size [2021-11-07 01:33:09,080 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-11-07 01:33:09,081 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-07 01:33:11,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1698965708] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:33:11,829 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2021-11-07 01:33:11,829 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [4, 4, 4] total 27 [2021-11-07 01:33:11,830 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896917041] [2021-11-07 01:33:11,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-07 01:33:11,830 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:33:11,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-07 01:33:11,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=592, Unknown=0, NotChecked=0, Total=702 [2021-11-07 01:33:11,832 INFO L87 Difference]: Start difference. First operand 64 states and 82 transitions. Second operand has 22 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 21 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:33:12,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:33:12,695 INFO L93 Difference]: Finished difference Result 107 states and 135 transitions. [2021-11-07 01:33:12,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-07 01:33:12,695 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 21 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-11-07 01:33:12,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:33:12,696 INFO L225 Difference]: With dead ends: 107 [2021-11-07 01:33:12,696 INFO L226 Difference]: Without dead ends: 88 [2021-11-07 01:33:12,697 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 63 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 302 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=115, Invalid=641, Unknown=0, NotChecked=0, Total=756 [2021-11-07 01:33:12,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-11-07 01:33:12,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 70. [2021-11-07 01:33:12,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 69 states have (on average 1.3043478260869565) internal successors, (90), 69 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:33:12,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 90 transitions. [2021-11-07 01:33:12,720 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 90 transitions. Word has length 29 [2021-11-07 01:33:12,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:33:12,720 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 90 transitions. [2021-11-07 01:33:12,720 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 21 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:33:12,720 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 90 transitions. [2021-11-07 01:33:12,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-07 01:33:12,721 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:33:12,721 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-07 01:33:12,744 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5423519d-7aa6-4a1b-a223-f75ef5490f44/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-07 01:33:12,944 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5423519d-7aa6-4a1b-a223-f75ef5490f44/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:33:12,944 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:33:12,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:33:12,944 INFO L85 PathProgramCache]: Analyzing trace with hash -1156393120, now seen corresponding path program 1 times [2021-11-07 01:33:12,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:33:12,945 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587796284] [2021-11-07 01:33:12,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:33:12,945 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:33:12,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:33:12,997 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:33:12,997 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:33:12,998 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587796284] [2021-11-07 01:33:12,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587796284] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 01:33:12,998 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1198438885] [2021-11-07 01:33:12,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:33:12,998 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:33:12,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5423519d-7aa6-4a1b-a223-f75ef5490f44/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:33:13,006 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5423519d-7aa6-4a1b-a223-f75ef5490f44/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:33:13,045 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5423519d-7aa6-4a1b-a223-f75ef5490f44/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-07 01:33:13,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:33:13,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:33:13,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:33:13,249 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:33:13,249 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:33:13,320 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:33:13,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1198438885] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:33:13,320 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1730782646] [2021-11-07 01:33:13,328 INFO L159 IcfgInterpreter]: Started Sifa with 28 locations of interest [2021-11-07 01:33:13,328 INFO L166 IcfgInterpreter]: Building call graph [2021-11-07 01:33:13,329 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-07 01:33:13,329 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-07 01:33:13,329 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-07 01:33:13,342 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:33:13,344 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:33:13,345 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:33:13,345 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-07 01:33:13,346 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:33:13,346 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:33:13,346 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-07 01:33:13,348 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 147 [2021-11-07 01:33:13,355 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_13|], 21=[|v_#valid_14|]} [2021-11-07 01:33:13,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:33:13,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:33:13,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:33:13,367 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-11-07 01:33:13,368 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:33:13,368 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 01:33:13,369 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:33:13,369 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 01:33:13,370 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 01:33:13,370 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:33:13,374 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:33:13,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:33:13,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:33:13,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:33:13,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:33:13,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:33:13,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:33:13,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:33:13,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:33:13,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:33:13,395 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-11-07 01:33:13,395 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:33:13,398 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-07 01:33:13,398 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:33:13,399 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-07 01:33:13,399 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-07 01:33:13,399 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:33:13,404 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:33:13,405 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:33:13,407 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 119 [2021-11-07 01:33:13,408 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-07 01:33:13,408 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:119 [2021-11-07 01:33:13,419 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:33:13,423 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 122 [2021-11-07 01:33:13,433 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:33:13,437 INFO L185 QuantifierPusher]: treesize reduction 6, result has 95.8 percent of original size 137 [2021-11-07 01:33:13,441 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:33:13,457 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:33:13,470 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:33:13,501 INFO L180 QuantifierPusher]: treesize reduction 6, result has 98.3 percent of original size [2021-11-07 01:33:13,510 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 372 [2021-11-07 01:33:13,522 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:33:13,561 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:33:13,562 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:33:13,563 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:33:13,564 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:33:13,565 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:33:13,570 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:33:13,577 INFO L180 QuantifierPusher]: treesize reduction 49, result has 59.5 percent of original size [2021-11-07 01:33:13,584 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-11-07 01:33:13,592 INFO L180 QuantifierPusher]: treesize reduction 51, result has 60.2 percent of original size [2021-11-07 01:33:13,597 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-11-07 01:33:13,616 INFO L180 QuantifierPusher]: treesize reduction 12, result has 88.1 percent of original size [2021-11-07 01:33:13,618 INFO L185 QuantifierPusher]: treesize reduction 5, result has 93.2 percent of original size 68 [2021-11-07 01:33:13,631 INFO L180 QuantifierPusher]: treesize reduction 15, result has 92.3 percent of original size [2021-11-07 01:33:13,635 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 174 [2021-11-07 01:33:13,659 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:33:13,666 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 339 [2021-11-07 01:33:13,675 INFO L180 QuantifierPusher]: treesize reduction 49, result has 59.5 percent of original size [2021-11-07 01:33:13,678 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-11-07 01:33:13,679 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-07 01:33:16,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1730782646] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:33:16,780 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2021-11-07 01:33:16,781 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [4, 4, 4] total 27 [2021-11-07 01:33:16,781 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065605792] [2021-11-07 01:33:16,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-07 01:33:16,782 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:33:16,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-07 01:33:16,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=552, Unknown=0, NotChecked=0, Total=702 [2021-11-07 01:33:16,790 INFO L87 Difference]: Start difference. First operand 70 states and 90 transitions. Second operand has 22 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 21 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:33:17,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:33:17,357 INFO L93 Difference]: Finished difference Result 90 states and 114 transitions. [2021-11-07 01:33:17,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-07 01:33:17,358 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 21 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-11-07 01:33:17,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:33:17,359 INFO L225 Difference]: With dead ends: 90 [2021-11-07 01:33:17,359 INFO L226 Difference]: Without dead ends: 75 [2021-11-07 01:33:17,360 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 63 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 288 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=155, Invalid=601, Unknown=0, NotChecked=0, Total=756 [2021-11-07 01:33:17,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-11-07 01:33:17,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 71. [2021-11-07 01:33:17,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 1.3) internal successors, (91), 70 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:33:17,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 91 transitions. [2021-11-07 01:33:17,368 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 91 transitions. Word has length 29 [2021-11-07 01:33:17,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:33:17,369 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 91 transitions. [2021-11-07 01:33:17,369 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 21 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:33:17,369 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 91 transitions. [2021-11-07 01:33:17,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-07 01:33:17,370 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:33:17,370 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-07 01:33:17,406 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5423519d-7aa6-4a1b-a223-f75ef5490f44/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-11-07 01:33:17,593 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5423519d-7aa6-4a1b-a223-f75ef5490f44/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2021-11-07 01:33:17,594 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:33:17,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:33:17,594 INFO L85 PathProgramCache]: Analyzing trace with hash -1238495513, now seen corresponding path program 1 times [2021-11-07 01:33:17,594 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:33:17,595 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518943029] [2021-11-07 01:33:17,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:33:17,595 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:33:17,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:33:17,642 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:33:17,642 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:33:17,643 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518943029] [2021-11-07 01:33:17,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518943029] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 01:33:17,643 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1082488246] [2021-11-07 01:33:17,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:33:17,643 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:33:17,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5423519d-7aa6-4a1b-a223-f75ef5490f44/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:33:17,658 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5423519d-7aa6-4a1b-a223-f75ef5490f44/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:33:17,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5423519d-7aa6-4a1b-a223-f75ef5490f44/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-07 01:33:17,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:33:17,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:33:17,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:33:17,933 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:33:17,934 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:33:18,012 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:33:18,015 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1082488246] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:33:18,016 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [925408177] [2021-11-07 01:33:18,018 INFO L159 IcfgInterpreter]: Started Sifa with 29 locations of interest [2021-11-07 01:33:18,018 INFO L166 IcfgInterpreter]: Building call graph [2021-11-07 01:33:18,019 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-07 01:33:18,019 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-07 01:33:18,019 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-07 01:33:18,037 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:33:18,037 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:33:18,038 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:33:18,038 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-07 01:33:18,039 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:33:18,039 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:33:18,040 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-07 01:33:18,043 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 147 [2021-11-07 01:33:18,047 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_14|], 21=[|v_#valid_15|]} [2021-11-07 01:33:18,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:33:18,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:33:18,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:33:18,058 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-11-07 01:33:18,059 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:33:18,059 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 01:33:18,060 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:33:18,060 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 01:33:18,061 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 01:33:18,061 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:33:18,065 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:33:18,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:33:18,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:33:18,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:33:18,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:33:18,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:33:18,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:33:18,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:33:18,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:33:18,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:33:18,088 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-11-07 01:33:18,089 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:33:18,092 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-07 01:33:18,093 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:33:18,093 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-07 01:33:18,094 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-07 01:33:18,094 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:33:18,098 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:33:18,100 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:33:18,102 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 119 [2021-11-07 01:33:18,103 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-07 01:33:18,103 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:119 [2021-11-07 01:33:18,111 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:33:18,114 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 122 [2021-11-07 01:33:18,123 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:33:18,131 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 143 [2021-11-07 01:33:18,135 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:33:18,148 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:33:18,162 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:33:18,186 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:33:18,196 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 376 [2021-11-07 01:33:18,204 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:33:18,254 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:33:18,256 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:33:18,257 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:33:18,258 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:33:18,259 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:33:18,264 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:33:18,272 INFO L180 QuantifierPusher]: treesize reduction 49, result has 59.5 percent of original size [2021-11-07 01:33:18,274 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-11-07 01:33:18,283 INFO L180 QuantifierPusher]: treesize reduction 51, result has 60.2 percent of original size [2021-11-07 01:33:18,286 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-11-07 01:33:18,294 INFO L180 QuantifierPusher]: treesize reduction 8, result has 90.5 percent of original size [2021-11-07 01:33:18,296 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 72 [2021-11-07 01:33:18,299 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:33:18,303 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 72 [2021-11-07 01:33:18,311 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:33:18,313 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 93 [2021-11-07 01:33:18,320 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:33:18,322 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 99 [2021-11-07 01:33:18,328 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:33:18,333 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 192 [2021-11-07 01:33:18,417 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:33:18,424 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 357 [2021-11-07 01:33:18,438 INFO L180 QuantifierPusher]: treesize reduction 49, result has 59.5 percent of original size [2021-11-07 01:33:18,441 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-11-07 01:33:18,442 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-07 01:33:30,356 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [925408177] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:33:30,356 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2021-11-07 01:33:30,357 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [4, 4, 4] total 28 [2021-11-07 01:33:30,357 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568621609] [2021-11-07 01:33:30,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-07 01:33:30,358 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:33:30,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-07 01:33:30,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=654, Unknown=0, NotChecked=0, Total=756 [2021-11-07 01:33:30,359 INFO L87 Difference]: Start difference. First operand 71 states and 91 transitions. Second operand has 23 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 22 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:33:32,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:33:32,597 INFO L93 Difference]: Finished difference Result 113 states and 136 transitions. [2021-11-07 01:33:32,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-07 01:33:32,598 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 22 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-11-07 01:33:32,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:33:32,599 INFO L225 Difference]: With dead ends: 113 [2021-11-07 01:33:32,599 INFO L226 Difference]: Without dead ends: 105 [2021-11-07 01:33:32,600 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 65 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 314 ImplicationChecksByTransitivity, 12.0s TimeCoverageRelationStatistics Valid=107, Invalid=705, Unknown=0, NotChecked=0, Total=812 [2021-11-07 01:33:32,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2021-11-07 01:33:32,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 74. [2021-11-07 01:33:32,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 73 states have (on average 1.3013698630136987) internal successors, (95), 73 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:33:32,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 95 transitions. [2021-11-07 01:33:32,611 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 95 transitions. Word has length 30 [2021-11-07 01:33:32,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:33:32,611 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 95 transitions. [2021-11-07 01:33:32,612 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 22 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:33:32,612 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 95 transitions. [2021-11-07 01:33:32,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-07 01:33:32,613 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:33:32,613 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-07 01:33:32,642 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5423519d-7aa6-4a1b-a223-f75ef5490f44/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-07 01:33:32,825 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5423519d-7aa6-4a1b-a223-f75ef5490f44/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:33:32,826 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:33:32,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:33:32,826 INFO L85 PathProgramCache]: Analyzing trace with hash -672803421, now seen corresponding path program 1 times [2021-11-07 01:33:32,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:33:32,826 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805863943] [2021-11-07 01:33:32,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:33:32,826 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:33:32,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:33:32,856 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:33:32,856 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:33:32,857 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805863943] [2021-11-07 01:33:32,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805863943] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 01:33:32,857 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1876872534] [2021-11-07 01:33:32,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:33:32,858 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:33:32,858 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5423519d-7aa6-4a1b-a223-f75ef5490f44/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:33:32,859 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5423519d-7aa6-4a1b-a223-f75ef5490f44/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:33:32,872 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5423519d-7aa6-4a1b-a223-f75ef5490f44/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-07 01:33:33,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:33:33,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:33:33,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:33:33,162 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:33:33,163 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:33:33,271 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:33:33,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1876872534] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:33:33,272 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [448902443] [2021-11-07 01:33:33,276 INFO L159 IcfgInterpreter]: Started Sifa with 29 locations of interest [2021-11-07 01:33:33,276 INFO L166 IcfgInterpreter]: Building call graph [2021-11-07 01:33:33,277 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-07 01:33:33,277 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-07 01:33:33,277 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-07 01:33:33,287 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:33:33,289 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:33:33,289 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:33:33,290 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-07 01:33:33,291 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:33:33,291 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:33:33,292 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-07 01:33:33,294 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 147 [2021-11-07 01:33:33,297 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_15|], 21=[|v_#valid_16|]} [2021-11-07 01:33:33,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:33:33,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:33:33,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:33:33,315 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-11-07 01:33:33,315 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:33:33,316 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 01:33:33,317 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:33:33,317 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 01:33:33,317 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 01:33:33,318 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:33:33,323 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:33:33,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:33:33,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:33:33,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:33:33,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:33:33,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:33:33,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:33:33,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:33:33,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:33:33,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:33:33,351 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-11-07 01:33:33,352 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:33:33,361 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-07 01:33:33,362 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:33:33,363 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-07 01:33:33,363 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-07 01:33:33,363 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:33:33,370 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:33:33,372 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:33:33,380 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 119 [2021-11-07 01:33:33,381 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-07 01:33:33,381 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:119 [2021-11-07 01:33:33,390 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:33:33,394 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 122 [2021-11-07 01:33:33,407 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:33:33,411 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 143 [2021-11-07 01:33:33,415 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:33:33,430 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:33:33,445 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:33:33,475 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:33:33,487 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 376 [2021-11-07 01:33:33,498 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:33:33,562 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:33:33,564 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:33:33,565 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:33:33,567 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:33:33,568 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:33:33,574 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:33:33,583 INFO L180 QuantifierPusher]: treesize reduction 49, result has 59.5 percent of original size [2021-11-07 01:33:33,586 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-11-07 01:33:33,596 INFO L180 QuantifierPusher]: treesize reduction 51, result has 60.2 percent of original size [2021-11-07 01:33:33,600 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-11-07 01:33:33,613 INFO L180 QuantifierPusher]: treesize reduction 12, result has 88.1 percent of original size [2021-11-07 01:33:33,616 INFO L185 QuantifierPusher]: treesize reduction 5, result has 93.2 percent of original size 68 [2021-11-07 01:33:33,626 INFO L180 QuantifierPusher]: treesize reduction 6, result has 94.1 percent of original size [2021-11-07 01:33:33,629 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 88 [2021-11-07 01:33:33,637 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:33:33,640 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 94 [2021-11-07 01:33:33,647 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:33:33,651 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 187 [2021-11-07 01:33:33,684 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:33:33,701 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 352 [2021-11-07 01:33:33,712 INFO L180 QuantifierPusher]: treesize reduction 49, result has 59.5 percent of original size [2021-11-07 01:33:33,717 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-11-07 01:33:33,718 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-07 01:33:38,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [448902443] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:33:38,844 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2021-11-07 01:33:38,845 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [4, 4, 4] total 28 [2021-11-07 01:33:38,845 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296109063] [2021-11-07 01:33:38,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-07 01:33:38,846 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:33:38,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-07 01:33:38,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=646, Unknown=0, NotChecked=0, Total=756 [2021-11-07 01:33:38,847 INFO L87 Difference]: Start difference. First operand 74 states and 95 transitions. Second operand has 23 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 22 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:33:40,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:33:40,019 INFO L93 Difference]: Finished difference Result 100 states and 125 transitions. [2021-11-07 01:33:40,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-07 01:33:40,020 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 22 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-11-07 01:33:40,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:33:40,021 INFO L225 Difference]: With dead ends: 100 [2021-11-07 01:33:40,021 INFO L226 Difference]: Without dead ends: 81 [2021-11-07 01:33:40,022 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 65 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 322 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=115, Invalid=697, Unknown=0, NotChecked=0, Total=812 [2021-11-07 01:33:40,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-11-07 01:33:40,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 77. [2021-11-07 01:33:40,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 76 states have (on average 1.2894736842105263) internal successors, (98), 76 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:33:40,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 98 transitions. [2021-11-07 01:33:40,029 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 98 transitions. Word has length 30 [2021-11-07 01:33:40,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:33:40,029 INFO L470 AbstractCegarLoop]: Abstraction has 77 states and 98 transitions. [2021-11-07 01:33:40,029 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 22 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:33:40,030 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 98 transitions. [2021-11-07 01:33:40,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-07 01:33:40,030 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:33:40,030 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-07 01:33:40,056 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5423519d-7aa6-4a1b-a223-f75ef5490f44/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-07 01:33:40,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5423519d-7aa6-4a1b-a223-f75ef5490f44/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:33:40,231 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:33:40,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:33:40,231 INFO L85 PathProgramCache]: Analyzing trace with hash 982474314, now seen corresponding path program 1 times [2021-11-07 01:33:40,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:33:40,232 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906810449] [2021-11-07 01:33:40,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:33:40,232 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:33:40,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:33:40,265 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:33:40,265 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:33:40,265 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906810449] [2021-11-07 01:33:40,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906810449] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 01:33:40,266 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [81125802] [2021-11-07 01:33:40,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:33:40,266 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:33:40,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5423519d-7aa6-4a1b-a223-f75ef5490f44/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:33:40,278 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5423519d-7aa6-4a1b-a223-f75ef5490f44/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:33:40,283 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5423519d-7aa6-4a1b-a223-f75ef5490f44/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-07 01:33:40,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:33:40,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:33:40,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:33:40,577 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:33:40,578 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:33:40,685 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:33:40,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [81125802] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:33:40,685 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1358469800] [2021-11-07 01:33:40,688 INFO L159 IcfgInterpreter]: Started Sifa with 29 locations of interest [2021-11-07 01:33:40,688 INFO L166 IcfgInterpreter]: Building call graph [2021-11-07 01:33:40,688 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-07 01:33:40,688 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-07 01:33:40,689 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-07 01:33:40,700 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:33:40,701 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:33:40,702 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:33:40,702 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-07 01:33:40,703 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:33:40,703 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:33:40,704 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-07 01:33:40,707 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 147 [2021-11-07 01:33:40,711 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_16|], 21=[|v_#valid_17|]} [2021-11-07 01:33:40,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:33:40,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:33:40,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:33:40,728 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-11-07 01:33:40,728 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:33:40,729 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 01:33:40,730 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:33:40,730 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 01:33:40,731 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 01:33:40,731 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:33:40,736 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:33:40,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:33:40,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:33:40,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:33:40,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:33:40,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:33:40,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:33:40,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:33:40,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:33:40,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:33:40,769 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-11-07 01:33:40,770 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:33:40,772 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-07 01:33:40,773 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:33:40,775 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-07 01:33:40,775 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-07 01:33:40,776 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:33:40,792 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:33:40,793 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:33:40,795 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 119 [2021-11-07 01:33:40,796 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-07 01:33:40,796 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:119 [2021-11-07 01:33:40,806 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:33:40,810 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 122 [2021-11-07 01:33:40,822 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:33:40,831 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 143 [2021-11-07 01:33:40,836 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:33:40,850 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:33:40,866 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:33:40,893 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:33:40,903 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 376 [2021-11-07 01:33:40,914 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:33:40,992 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:33:40,994 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:33:40,996 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:33:40,999 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:33:41,001 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:33:41,008 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:33:41,022 INFO L180 QuantifierPusher]: treesize reduction 49, result has 59.5 percent of original size [2021-11-07 01:33:41,025 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-11-07 01:33:41,034 INFO L180 QuantifierPusher]: treesize reduction 51, result has 60.2 percent of original size [2021-11-07 01:33:41,038 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-11-07 01:33:41,046 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:33:41,049 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 83 [2021-11-07 01:33:41,059 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:33:41,060 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 89 [2021-11-07 01:33:41,067 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:33:41,071 INFO L185 QuantifierPusher]: treesize reduction 7, result has 92.0 percent of original size 80 [2021-11-07 01:33:41,093 INFO L180 QuantifierPusher]: treesize reduction 15, result has 86.2 percent of original size [2021-11-07 01:33:41,097 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 90 [2021-11-07 01:33:41,104 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:33:41,109 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 183 [2021-11-07 01:33:41,203 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:33:41,208 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 348 [2021-11-07 01:33:41,217 INFO L180 QuantifierPusher]: treesize reduction 49, result has 59.5 percent of original size [2021-11-07 01:33:41,219 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-11-07 01:33:41,219 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-07 01:33:56,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1358469800] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:33:56,251 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2021-11-07 01:33:56,251 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [4, 4, 4] total 28 [2021-11-07 01:33:56,251 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231794993] [2021-11-07 01:33:56,252 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-07 01:33:56,252 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:33:56,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-07 01:33:56,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=654, Unknown=0, NotChecked=0, Total=756 [2021-11-07 01:33:56,253 INFO L87 Difference]: Start difference. First operand 77 states and 98 transitions. Second operand has 23 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 22 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:33:58,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:33:58,496 INFO L93 Difference]: Finished difference Result 126 states and 156 transitions. [2021-11-07 01:33:58,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-07 01:33:58,497 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 22 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-11-07 01:33:58,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:33:58,498 INFO L225 Difference]: With dead ends: 126 [2021-11-07 01:33:58,498 INFO L226 Difference]: Without dead ends: 118 [2021-11-07 01:33:58,499 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 65 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 15.1s TimeCoverageRelationStatistics Valid=107, Invalid=705, Unknown=0, NotChecked=0, Total=812 [2021-11-07 01:33:58,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-11-07 01:33:58,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 86. [2021-11-07 01:33:58,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 85 states have (on average 1.2941176470588236) internal successors, (110), 85 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:33:58,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 110 transitions. [2021-11-07 01:33:58,508 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 110 transitions. Word has length 30 [2021-11-07 01:33:58,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:33:58,509 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 110 transitions. [2021-11-07 01:33:58,509 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 22 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:33:58,509 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 110 transitions. [2021-11-07 01:33:58,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-07 01:33:58,509 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:33:58,510 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-07 01:33:58,564 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5423519d-7aa6-4a1b-a223-f75ef5490f44/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-07 01:33:58,737 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5423519d-7aa6-4a1b-a223-f75ef5490f44/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:33:58,738 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:33:58,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:33:58,738 INFO L85 PathProgramCache]: Analyzing trace with hash -1564511474, now seen corresponding path program 1 times [2021-11-07 01:33:58,738 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:33:58,739 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868784026] [2021-11-07 01:33:58,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:33:58,739 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:33:58,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:33:58,803 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:33:58,804 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:33:58,804 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868784026] [2021-11-07 01:33:58,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868784026] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 01:33:58,804 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [846801148] [2021-11-07 01:33:58,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:33:58,805 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:33:58,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5423519d-7aa6-4a1b-a223-f75ef5490f44/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:33:58,813 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5423519d-7aa6-4a1b-a223-f75ef5490f44/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:33:58,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5423519d-7aa6-4a1b-a223-f75ef5490f44/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-07 01:33:59,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:33:59,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:33:59,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:33:59,190 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:33:59,190 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:33:59,287 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:33:59,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [846801148] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:33:59,287 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2024138882] [2021-11-07 01:33:59,289 INFO L159 IcfgInterpreter]: Started Sifa with 29 locations of interest [2021-11-07 01:33:59,290 INFO L166 IcfgInterpreter]: Building call graph [2021-11-07 01:33:59,290 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-07 01:33:59,291 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-07 01:33:59,291 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-07 01:33:59,299 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:33:59,300 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:33:59,301 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:33:59,301 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-07 01:33:59,302 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:33:59,302 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:33:59,303 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-07 01:33:59,304 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 147 [2021-11-07 01:33:59,307 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_17|], 21=[|v_#valid_18|]} [2021-11-07 01:33:59,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:33:59,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:33:59,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:33:59,321 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-11-07 01:33:59,322 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:33:59,322 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 01:33:59,323 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:33:59,323 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 01:33:59,324 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 01:33:59,324 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:33:59,329 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:33:59,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:33:59,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:33:59,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:33:59,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:33:59,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:33:59,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:33:59,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:33:59,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:33:59,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:33:59,354 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-11-07 01:33:59,355 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:33:59,358 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-07 01:33:59,358 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:33:59,359 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-07 01:33:59,359 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-07 01:33:59,360 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:33:59,365 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:33:59,367 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:33:59,369 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 119 [2021-11-07 01:33:59,369 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-07 01:33:59,370 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:119 [2021-11-07 01:33:59,387 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:33:59,400 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 122 [2021-11-07 01:33:59,409 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:33:59,411 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 143 [2021-11-07 01:33:59,415 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:33:59,430 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:33:59,450 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:33:59,480 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:33:59,490 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 383 [2021-11-07 01:33:59,501 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:33:59,546 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:33:59,547 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:33:59,549 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:33:59,550 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:33:59,552 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:33:59,557 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:33:59,566 INFO L180 QuantifierPusher]: treesize reduction 49, result has 59.5 percent of original size [2021-11-07 01:33:59,568 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-11-07 01:33:59,578 INFO L180 QuantifierPusher]: treesize reduction 51, result has 60.2 percent of original size [2021-11-07 01:33:59,582 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-11-07 01:33:59,589 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:33:59,591 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 83 [2021-11-07 01:33:59,597 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:33:59,599 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 89 [2021-11-07 01:33:59,603 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:33:59,606 INFO L185 QuantifierPusher]: treesize reduction 7, result has 92.0 percent of original size 80 [2021-11-07 01:33:59,624 INFO L180 QuantifierPusher]: treesize reduction 17, result has 91.9 percent of original size [2021-11-07 01:33:59,628 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 186 [2021-11-07 01:33:59,676 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:33:59,682 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 351 [2021-11-07 01:33:59,691 INFO L180 QuantifierPusher]: treesize reduction 49, result has 59.5 percent of original size [2021-11-07 01:33:59,694 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-11-07 01:33:59,694 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-07 01:34:08,858 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [2024138882] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:34:08,858 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2021-11-07 01:34:08,858 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [4, 4, 4] total 28 [2021-11-07 01:34:08,859 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6032805] [2021-11-07 01:34:08,859 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-07 01:34:08,859 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:34:08,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-07 01:34:08,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=614, Unknown=0, NotChecked=0, Total=756 [2021-11-07 01:34:08,861 INFO L87 Difference]: Start difference. First operand 86 states and 110 transitions. Second operand has 23 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 22 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:34:10,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:34:10,368 INFO L93 Difference]: Finished difference Result 113 states and 140 transitions. [2021-11-07 01:34:10,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-07 01:34:10,369 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 22 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-11-07 01:34:10,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:34:10,370 INFO L225 Difference]: With dead ends: 113 [2021-11-07 01:34:10,370 INFO L226 Difference]: Without dead ends: 105 [2021-11-07 01:34:10,371 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 65 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 297 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=147, Invalid=665, Unknown=0, NotChecked=0, Total=812 [2021-11-07 01:34:10,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2021-11-07 01:34:10,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 84. [2021-11-07 01:34:10,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 83 states have (on average 1.2891566265060241) internal successors, (107), 83 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:34:10,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 107 transitions. [2021-11-07 01:34:10,382 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 107 transitions. Word has length 30 [2021-11-07 01:34:10,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:34:10,383 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 107 transitions. [2021-11-07 01:34:10,383 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 22 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:34:10,383 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 107 transitions. [2021-11-07 01:34:10,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-07 01:34:10,384 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:34:10,384 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-07 01:34:10,406 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5423519d-7aa6-4a1b-a223-f75ef5490f44/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-07 01:34:10,584 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5423519d-7aa6-4a1b-a223-f75ef5490f44/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:34:10,585 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:34:10,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:34:10,585 INFO L85 PathProgramCache]: Analyzing trace with hash -439570507, now seen corresponding path program 1 times [2021-11-07 01:34:10,585 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:34:10,586 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545832701] [2021-11-07 01:34:10,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:34:10,586 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:34:10,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:34:10,625 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:34:10,625 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:34:10,626 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545832701] [2021-11-07 01:34:10,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545832701] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 01:34:10,626 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1549360505] [2021-11-07 01:34:10,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:34:10,626 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:34:10,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5423519d-7aa6-4a1b-a223-f75ef5490f44/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:34:10,630 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5423519d-7aa6-4a1b-a223-f75ef5490f44/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:34:10,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5423519d-7aa6-4a1b-a223-f75ef5490f44/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-07 01:34:10,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:34:10,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:34:10,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:34:10,984 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:34:10,985 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:34:11,069 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:34:11,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1549360505] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:34:11,070 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1812264361] [2021-11-07 01:34:11,072 INFO L159 IcfgInterpreter]: Started Sifa with 30 locations of interest [2021-11-07 01:34:11,073 INFO L166 IcfgInterpreter]: Building call graph [2021-11-07 01:34:11,073 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-07 01:34:11,073 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-07 01:34:11,074 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-07 01:34:11,082 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:34:11,083 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:34:11,083 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:34:11,084 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-07 01:34:11,084 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:34:11,085 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:34:11,085 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-07 01:34:11,087 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 147 [2021-11-07 01:34:11,090 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_18|], 21=[|v_#valid_19|]} [2021-11-07 01:34:11,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:34:11,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:34:11,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:34:11,106 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-11-07 01:34:11,106 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:34:11,107 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 01:34:11,107 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:34:11,108 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 01:34:11,108 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 01:34:11,109 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:34:11,115 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:34:11,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:34:11,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:34:11,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:34:11,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:34:11,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:34:11,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:34:11,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:34:11,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:34:11,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:34:11,147 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-11-07 01:34:11,148 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:34:11,150 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-07 01:34:11,151 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:34:11,152 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-07 01:34:11,152 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-07 01:34:11,152 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:34:11,157 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:34:11,159 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:34:11,160 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 119 [2021-11-07 01:34:11,161 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-07 01:34:11,161 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:119 [2021-11-07 01:34:11,170 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:34:11,180 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 122 [2021-11-07 01:34:11,194 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:34:11,198 INFO L185 QuantifierPusher]: treesize reduction 6, result has 95.8 percent of original size 137 [2021-11-07 01:34:11,201 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:34:11,216 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:34:11,230 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:34:11,272 INFO L180 QuantifierPusher]: treesize reduction 6, result has 98.3 percent of original size [2021-11-07 01:34:11,282 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 365 [2021-11-07 01:34:11,295 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:34:11,333 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:34:11,334 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:34:11,335 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:34:11,336 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:34:11,337 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:34:11,341 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:34:11,347 INFO L180 QuantifierPusher]: treesize reduction 49, result has 59.5 percent of original size [2021-11-07 01:34:11,349 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-11-07 01:34:11,357 INFO L180 QuantifierPusher]: treesize reduction 51, result has 60.2 percent of original size [2021-11-07 01:34:11,360 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-11-07 01:34:11,367 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:34:11,369 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 83 [2021-11-07 01:34:11,376 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:34:11,378 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 89 [2021-11-07 01:34:11,384 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:34:11,387 INFO L185 QuantifierPusher]: treesize reduction 7, result has 92.0 percent of original size 80 [2021-11-07 01:34:11,400 INFO L180 QuantifierPusher]: treesize reduction 8, result has 93.0 percent of original size [2021-11-07 01:34:11,402 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 100 [2021-11-07 01:34:11,419 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:34:11,421 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 106 [2021-11-07 01:34:11,428 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:34:11,432 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 199 [2021-11-07 01:34:11,579 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:34:11,585 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 364 [2021-11-07 01:34:11,597 INFO L180 QuantifierPusher]: treesize reduction 49, result has 59.5 percent of original size [2021-11-07 01:34:11,599 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-11-07 01:34:11,600 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-07 01:34:28,342 WARN L207 SmtUtils]: Spent 6.97 s on a formula simplification. DAG size of input: 137 DAG size of output: 117 [2021-11-07 01:34:37,736 WARN L207 SmtUtils]: Spent 8.92 s on a formula simplification. DAG size of input: 141 DAG size of output: 121 [2021-11-07 01:34:37,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1812264361] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:34:37,737 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2021-11-07 01:34:37,738 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [4, 4, 4] total 29 [2021-11-07 01:34:37,738 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753264146] [2021-11-07 01:34:37,739 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-07 01:34:37,740 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:34:37,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-07 01:34:37,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=710, Unknown=0, NotChecked=0, Total=812 [2021-11-07 01:34:37,741 INFO L87 Difference]: Start difference. First operand 84 states and 107 transitions. Second operand has 24 states, 24 states have (on average 1.25) internal successors, (30), 23 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:34:43,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:34:43,009 INFO L93 Difference]: Finished difference Result 130 states and 158 transitions. [2021-11-07 01:34:43,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-07 01:34:43,010 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.25) internal successors, (30), 23 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-11-07 01:34:43,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:34:43,010 INFO L225 Difference]: With dead ends: 130 [2021-11-07 01:34:43,011 INFO L226 Difference]: Without dead ends: 122 [2021-11-07 01:34:43,011 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 67 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 330 ImplicationChecksByTransitivity, 26.2s TimeCoverageRelationStatistics Valid=107, Invalid=763, Unknown=0, NotChecked=0, Total=870 [2021-11-07 01:34:43,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-11-07 01:34:43,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 80. [2021-11-07 01:34:43,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 1.2911392405063291) internal successors, (102), 79 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:34:43,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 102 transitions. [2021-11-07 01:34:43,022 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 102 transitions. Word has length 31 [2021-11-07 01:34:43,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:34:43,022 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 102 transitions. [2021-11-07 01:34:43,022 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.25) internal successors, (30), 23 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:34:43,022 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 102 transitions. [2021-11-07 01:34:43,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-07 01:34:43,023 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:34:43,023 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-07 01:34:43,046 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5423519d-7aa6-4a1b-a223-f75ef5490f44/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2021-11-07 01:34:43,225 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5423519d-7aa6-4a1b-a223-f75ef5490f44/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable134 [2021-11-07 01:34:43,226 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:34:43,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:34:43,226 INFO L85 PathProgramCache]: Analyzing trace with hash -1069911177, now seen corresponding path program 1 times [2021-11-07 01:34:43,226 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:34:43,227 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587605959] [2021-11-07 01:34:43,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:34:43,227 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:34:43,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:34:43,298 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:34:43,299 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:34:43,299 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587605959] [2021-11-07 01:34:43,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587605959] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 01:34:43,299 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1694856171] [2021-11-07 01:34:43,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:34:43,300 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:34:43,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5423519d-7aa6-4a1b-a223-f75ef5490f44/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:34:43,307 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5423519d-7aa6-4a1b-a223-f75ef5490f44/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:34:43,309 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5423519d-7aa6-4a1b-a223-f75ef5490f44/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-07 01:34:43,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:34:43,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-07 01:34:43,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:34:43,911 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:34:43,912 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:34:44,596 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:34:44,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1694856171] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:34:44,596 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-11-07 01:34:44,597 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 8] imperfect sequences [5] total 16 [2021-11-07 01:34:44,597 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26965812] [2021-11-07 01:34:44,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-07 01:34:44,597 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:34:44,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-07 01:34:44,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2021-11-07 01:34:44,598 INFO L87 Difference]: Start difference. First operand 80 states and 102 transitions. Second operand has 13 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 13 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:34:44,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:34:44,778 INFO L93 Difference]: Finished difference Result 80 states and 102 transitions. [2021-11-07 01:34:44,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 01:34:44,778 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 13 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-11-07 01:34:44,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:34:44,778 INFO L225 Difference]: With dead ends: 80 [2021-11-07 01:34:44,778 INFO L226 Difference]: Without dead ends: 0 [2021-11-07 01:34:44,779 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2021-11-07 01:34:44,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-07 01:34:44,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-07 01:34:44,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:34:44,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-07 01:34:44,780 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 31 [2021-11-07 01:34:44,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:34:44,780 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-07 01:34:44,780 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 13 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:34:44,781 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-07 01:34:44,781 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-07 01:34:44,787 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 01:34:44,820 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5423519d-7aa6-4a1b-a223-f75ef5490f44/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2021-11-07 01:34:44,988 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5423519d-7aa6-4a1b-a223-f75ef5490f44/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable147 [2021-11-07 01:34:44,990 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-07 01:34:44,993 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:34:45,044 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:34:45,099 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:34:45,108 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:34:45,114 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:34:45,367 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:34:45,368 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:34:45,395 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:34:45,396 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:34:45,404 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:34:45,404 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:34:45,407 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:34:45,417 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:34:45,437 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:34:45,438 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:34:45,450 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:34:45,451 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:34:45,453 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:34:46,453 INFO L857 garLoopResultBuilder]: For program point L35-2(lines 35 75) no Hoare annotation was computed. [2021-11-07 01:34:46,453 INFO L857 garLoopResultBuilder]: For program point L35-3(lines 35 75) no Hoare annotation was computed. [2021-11-07 01:34:46,454 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-07 01:34:46,454 INFO L857 garLoopResultBuilder]: For program point L185(lines 185 190) no Hoare annotation was computed. [2021-11-07 01:34:46,454 INFO L857 garLoopResultBuilder]: For program point L203(lines 203 208) no Hoare annotation was computed. [2021-11-07 01:34:46,454 INFO L857 garLoopResultBuilder]: For program point L38(lines 37 52) no Hoare annotation was computed. [2021-11-07 01:34:46,454 INFO L857 garLoopResultBuilder]: For program point L38-1(lines 37 52) no Hoare annotation was computed. [2021-11-07 01:34:46,455 INFO L857 garLoopResultBuilder]: For program point L38-2(lines 37 52) no Hoare annotation was computed. [2021-11-07 01:34:46,455 INFO L857 garLoopResultBuilder]: For program point L38-3(lines 37 52) no Hoare annotation was computed. [2021-11-07 01:34:46,455 INFO L853 garLoopResultBuilder]: At program point L73(lines 35 75) the Hoare annotation is: false [2021-11-07 01:34:46,455 INFO L853 garLoopResultBuilder]: At program point L73-1(lines 35 75) the Hoare annotation is: (and (<= 0 |#t~string4.base|) (<= (+ ULTIMATE.start_base2flt_~e 1) 0) (= ULTIMATE.start_main_~zero~0 0) (<= ULTIMATE.start_main_~ea~2 127) (<= 0 (+ ULTIMATE.start_main_~ea~2 128)) (<= 0 |#t~string5.base|) (< 0 (+ 129 ULTIMATE.start_base2flt_~e)) (<= ULTIMATE.start_main_~eb~2 127) (<= 0 |#t~string5.offset|) (<= 0 (+ ULTIMATE.start_main_~eb~2 128)) (<= 0 |#t~string6.base|) (= |#NULL.offset| 0) (= (mod ULTIMATE.start_base2flt_~m 2) 0) (= |#t~string6.offset| 0) (= |ULTIMATE.start_base2flt_#in~e| 0) (= |ULTIMATE.start_base2flt_#in~m| 1) (<= 0 |#StackHeapBarrier|) (<= |#t~string5.offset| 0) (= 0 |#t~string4.offset|) (= |#NULL.base| 0)) [2021-11-07 01:34:46,456 INFO L853 garLoopResultBuilder]: At program point L73-2(lines 35 75) the Hoare annotation is: (= ULTIMATE.start_main_~zero~0 0) [2021-11-07 01:34:46,456 INFO L853 garLoopResultBuilder]: At program point L73-3(lines 35 75) the Hoare annotation is: (= ULTIMATE.start_main_~zero~0 0) [2021-11-07 01:34:46,456 INFO L853 garLoopResultBuilder]: At program point L57-2(lines 57 72) the Hoare annotation is: false [2021-11-07 01:34:46,456 INFO L853 garLoopResultBuilder]: At program point L57-5(lines 57 72) the Hoare annotation is: false [2021-11-07 01:34:46,456 INFO L853 garLoopResultBuilder]: At program point L57-8(lines 57 72) the Hoare annotation is: (= ULTIMATE.start_main_~zero~0 0) [2021-11-07 01:34:46,457 INFO L853 garLoopResultBuilder]: At program point L57-11(lines 57 72) the Hoare annotation is: (= ULTIMATE.start_main_~zero~0 0) [2021-11-07 01:34:46,457 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-07 01:34:46,457 INFO L857 garLoopResultBuilder]: For program point L256(lines 256 272) no Hoare annotation was computed. [2021-11-07 01:34:46,457 INFO L860 garLoopResultBuilder]: At program point L256-1(lines 256 272) the Hoare annotation is: true [2021-11-07 01:34:46,457 INFO L857 garLoopResultBuilder]: For program point L58(lines 57 72) no Hoare annotation was computed. [2021-11-07 01:34:46,458 INFO L857 garLoopResultBuilder]: For program point L58-1(lines 57 72) no Hoare annotation was computed. [2021-11-07 01:34:46,458 INFO L857 garLoopResultBuilder]: For program point L58-2(lines 57 72) no Hoare annotation was computed. [2021-11-07 01:34:46,460 INFO L857 garLoopResultBuilder]: For program point L58-3(lines 57 72) no Hoare annotation was computed. [2021-11-07 01:34:46,460 INFO L857 garLoopResultBuilder]: For program point L158-2(lines 157 218) no Hoare annotation was computed. [2021-11-07 01:34:46,460 INFO L857 garLoopResultBuilder]: For program point L59(lines 57 72) no Hoare annotation was computed. [2021-11-07 01:34:46,460 INFO L857 garLoopResultBuilder]: For program point L59-1(lines 57 72) no Hoare annotation was computed. [2021-11-07 01:34:46,461 INFO L857 garLoopResultBuilder]: For program point L59-2(lines 57 72) no Hoare annotation was computed. [2021-11-07 01:34:46,461 INFO L857 garLoopResultBuilder]: For program point L59-3(lines 57 72) no Hoare annotation was computed. [2021-11-07 01:34:46,461 INFO L857 garLoopResultBuilder]: For program point L194(lines 194 211) no Hoare annotation was computed. [2021-11-07 01:34:46,461 INFO L857 garLoopResultBuilder]: For program point L194-2(lines 194 211) no Hoare annotation was computed. [2021-11-07 01:34:46,461 INFO L857 garLoopResultBuilder]: For program point L29(lines 29 34) no Hoare annotation was computed. [2021-11-07 01:34:46,463 INFO L857 garLoopResultBuilder]: For program point L29-1(lines 29 34) no Hoare annotation was computed. [2021-11-07 01:34:46,463 INFO L857 garLoopResultBuilder]: For program point L29-2(lines 29 34) no Hoare annotation was computed. [2021-11-07 01:34:46,463 INFO L857 garLoopResultBuilder]: For program point L29-3(lines 29 34) no Hoare annotation was computed. [2021-11-07 01:34:46,464 INFO L853 garLoopResultBuilder]: At program point L79(lines 28 81) the Hoare annotation is: (let ((.cse0 (select |#memory_int| |#t~string4.base|))) (and (< |#StackHeapBarrier| |#t~string6.base|) (<= ULTIMATE.start_main_~ea~2 127) (< |#StackHeapBarrier| |#t~string5.base|) (<= 0 (+ ULTIMATE.start_main_~ea~2 128)) (= (select |#valid| |#t~string5.base|) 1) (= (select |#valid| |#t~string4.base|) 1) (= |#t~string5.offset| 0) (<= ULTIMATE.start_main_~eb~2 127) (= |ULTIMATE.start_base2flt_#in~m| 0) (= ULTIMATE.start_base2flt_~__retres4~0 0) (<= 0 (+ ULTIMATE.start_main_~eb~2 128)) (= (select |#valid| |#t~string6.base|) 1) (= |ULTIMATE.start_base2flt_#in~m| ULTIMATE.start_base2flt_~m) (= (select |#valid| 0) 0) (< |#StackHeapBarrier| |#t~string4.base|) (= (select |#length| |#t~string6.base|) 12) (= (select .cse0 (+ 1 |#t~string4.offset|)) 0) (= |#NULL.offset| 0) (= |#t~string6.offset| 0) (= |ULTIMATE.start_base2flt_#in~e| 0) (= |ULTIMATE.start_base2flt_#in~e| ULTIMATE.start_base2flt_~e) (= (select |#length| |#t~string4.base|) 2) (= (select .cse0 |#t~string4.offset|) 48) (= 22 (select |#length| |#t~string5.base|)) (= 0 |#t~string4.offset|) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2021-11-07 01:34:46,464 INFO L853 garLoopResultBuilder]: At program point L79-1(lines 28 81) the Hoare annotation is: (and (<= 0 |#t~string4.base|) (<= (+ ULTIMATE.start_base2flt_~e 1) 0) (= ULTIMATE.start_main_~zero~0 0) (<= ULTIMATE.start_main_~ea~2 127) (<= 0 (+ ULTIMATE.start_main_~ea~2 128)) (<= 0 |#t~string5.base|) (<= ULTIMATE.start_main_~eb~2 127) (<= 0 |#t~string5.offset|) (<= 0 (+ ULTIMATE.start_main_~eb~2 128)) (<= 0 |#t~string6.base|) (= |#NULL.offset| 0) (= |#t~string6.offset| 0) (= |ULTIMATE.start_base2flt_#in~e| 0) (= |ULTIMATE.start_base2flt_#in~m| 1) (<= 0 |#StackHeapBarrier|) (<= |#t~string5.offset| 0) (= 0 |#t~string4.offset|) (= |#NULL.base| 0)) [2021-11-07 01:34:46,464 INFO L853 garLoopResultBuilder]: At program point L79-2(lines 28 81) the Hoare annotation is: (= ULTIMATE.start_main_~zero~0 0) [2021-11-07 01:34:46,464 INFO L853 garLoopResultBuilder]: At program point L79-3(lines 28 81) the Hoare annotation is: (= ULTIMATE.start_main_~zero~0 0) [2021-11-07 01:34:46,465 INFO L857 garLoopResultBuilder]: For program point L195(lines 195 200) no Hoare annotation was computed. [2021-11-07 01:34:46,465 INFO L857 garLoopResultBuilder]: For program point L179(lines 179 184) no Hoare annotation was computed. [2021-11-07 01:34:46,465 INFO L857 garLoopResultBuilder]: For program point L47(lines 47 51) no Hoare annotation was computed. [2021-11-07 01:34:46,465 INFO L853 garLoopResultBuilder]: At program point L47-1(lines 37 52) the Hoare annotation is: false [2021-11-07 01:34:46,466 INFO L857 garLoopResultBuilder]: For program point L47-2(lines 47 51) no Hoare annotation was computed. [2021-11-07 01:34:46,466 INFO L853 garLoopResultBuilder]: At program point L47-3(lines 37 52) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~zero~0 0)) (.cse1 (<= ULTIMATE.start_main_~ea~2 127)) (.cse2 (<= 0 (+ ULTIMATE.start_main_~ea~2 128))) (.cse3 (<= ULTIMATE.start_main_~eb~2 127)) (.cse4 (<= 0 (+ ULTIMATE.start_main_~eb~2 128))) (.cse6 (= |#NULL.offset| 0)) (.cse7 (= |#t~string6.offset| 0)) (.cse8 (= |ULTIMATE.start_base2flt_#in~m| 1)) (.cse9 (= 0 |#t~string4.offset|)) (.cse10 (= |#NULL.base| 0))) (or (let ((.cse5 (select |#memory_int| |#t~string4.base|))) (and (< |#StackHeapBarrier| |#t~string6.base|) .cse0 .cse1 (< |#StackHeapBarrier| |#t~string5.base|) .cse2 (= (select |#valid| |#t~string5.base|) 1) (= (select |#valid| |#t~string4.base|) 1) (= |#t~string5.offset| 0) .cse3 .cse4 (= (select |#valid| |#t~string6.base|) 1) (= |ULTIMATE.start_base2flt_#in~m| ULTIMATE.start_base2flt_~m) (= (select |#valid| 0) 0) (< |#StackHeapBarrier| |#t~string4.base|) (= (select |#length| |#t~string6.base|) 12) (= (select .cse5 (+ 1 |#t~string4.offset|)) 0) .cse6 .cse7 (= |ULTIMATE.start_base2flt_#in~e| ULTIMATE.start_base2flt_~e) (= (select |#length| |#t~string4.base|) 2) (= ULTIMATE.start_base2flt_~e 0) (= (select .cse5 |#t~string4.offset|) 48) .cse8 (= 22 (select |#length| |#t~string5.base|)) .cse9 (< 0 |#StackHeapBarrier|) .cse10)) (and (< (mod ULTIMATE.start_base2flt_~m 4294967296) 16777216) (<= 0 |#t~string4.base|) (<= (+ ULTIMATE.start_base2flt_~e 1) 0) .cse0 .cse1 .cse2 (<= 0 |#t~string5.base|) (< 0 (+ 129 ULTIMATE.start_base2flt_~e)) .cse3 (<= 0 |#t~string5.offset|) .cse4 (<= 0 |#t~string6.base|) .cse6 (= (mod ULTIMATE.start_base2flt_~m 2) 0) .cse7 (= |ULTIMATE.start_base2flt_#in~e| 0) .cse8 (<= 0 |#StackHeapBarrier|) (<= |#t~string5.offset| 0) .cse9 .cse10))) [2021-11-07 01:34:46,466 INFO L857 garLoopResultBuilder]: For program point L47-4(lines 47 51) no Hoare annotation was computed. [2021-11-07 01:34:46,466 INFO L853 garLoopResultBuilder]: At program point L47-5(lines 37 52) the Hoare annotation is: (= ULTIMATE.start_main_~zero~0 0) [2021-11-07 01:34:46,466 INFO L857 garLoopResultBuilder]: For program point L47-6(lines 47 51) no Hoare annotation was computed. [2021-11-07 01:34:46,466 INFO L853 garLoopResultBuilder]: At program point L47-7(lines 37 52) the Hoare annotation is: (= ULTIMATE.start_main_~zero~0 0) [2021-11-07 01:34:46,467 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-11-07 01:34:46,467 INFO L857 garLoopResultBuilder]: For program point L16(lines 16 18) no Hoare annotation was computed. [2021-11-07 01:34:46,467 INFO L857 garLoopResultBuilder]: For program point L17(line 17) no Hoare annotation was computed. [2021-11-07 01:34:46,467 INFO L853 garLoopResultBuilder]: At program point L216(lines 157 218) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~zero~0 0))) (or (and .cse0 (= ULTIMATE.start_main_~sa~0 1)) (and .cse0 (= ULTIMATE.start_mulflt_~__retres10~1 0)))) [2021-11-07 01:34:46,467 INFO L857 garLoopResultBuilder]: For program point L35(lines 35 75) no Hoare annotation was computed. [2021-11-07 01:34:46,467 INFO L857 garLoopResultBuilder]: For program point L35-1(lines 35 75) no Hoare annotation was computed. [2021-11-07 01:34:46,470 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:34:46,471 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-07 01:34:46,507 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 01:34:46 BoogieIcfgContainer [2021-11-07 01:34:46,512 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-07 01:34:46,513 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-07 01:34:46,513 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-07 01:34:46,514 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-07 01:34:46,514 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:32:44" (3/4) ... [2021-11-07 01:34:46,518 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-07 01:34:46,538 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 35 nodes and edges [2021-11-07 01:34:46,539 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2021-11-07 01:34:46,540 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-07 01:34:46,540 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-07 01:34:46,569 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((((((((((((((((((((unknown-#StackHeapBarrier-unknown < "reach_error" && ea <= 127) && unknown-#StackHeapBarrier-unknown < "soft_float_2a.c.cil.c") && 0 <= ea + 128) && \valid["soft_float_2a.c.cil.c"] == 1) && \valid["0"] == 1) && "soft_float_2a.c.cil.c" == 0) && eb <= 127) && \old(m) == 0) && __retres4 == 0) && 0 <= eb + 128) && \valid["reach_error"] == 1) && \old(m) == m) && \valid[0] == 0) && unknown-#StackHeapBarrier-unknown < "0") && unknown-#length-unknown["reach_error"] == 12) && unknown-#memory_int-unknown["0"][1 + "0"] == 0) && #NULL == 0) && "reach_error" == 0) && \old(e) == 0) && \old(e) == e) && unknown-#length-unknown["0"] == 2) && unknown-#memory_int-unknown["0"]["0"] == 48) && 22 == unknown-#length-unknown["soft_float_2a.c.cil.c"]) && 0 == "0") && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0 [2021-11-07 01:34:46,571 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((((((((((0 <= "0" && e + 1 <= 0) && zero == 0) && ea <= 127) && 0 <= ea + 128) && 0 <= "soft_float_2a.c.cil.c") && eb <= 127) && 0 <= "soft_float_2a.c.cil.c") && 0 <= eb + 128) && 0 <= "reach_error") && #NULL == 0) && "reach_error" == 0) && \old(e) == 0) && \old(m) == 1) && 0 <= unknown-#StackHeapBarrier-unknown) && "soft_float_2a.c.cil.c" <= 0) && 0 == "0") && #NULL == 0 [2021-11-07 01:34:46,571 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((((((((((((((((((((unknown-#StackHeapBarrier-unknown < "reach_error" && zero == 0) && ea <= 127) && unknown-#StackHeapBarrier-unknown < "soft_float_2a.c.cil.c") && 0 <= ea + 128) && \valid["soft_float_2a.c.cil.c"] == 1) && \valid["0"] == 1) && "soft_float_2a.c.cil.c" == 0) && eb <= 127) && 0 <= eb + 128) && \valid["reach_error"] == 1) && \old(m) == m) && \valid[0] == 0) && unknown-#StackHeapBarrier-unknown < "0") && unknown-#length-unknown["reach_error"] == 12) && unknown-#memory_int-unknown["0"][1 + "0"] == 0) && #NULL == 0) && "reach_error" == 0) && \old(e) == e) && unknown-#length-unknown["0"] == 2) && e == 0) && unknown-#memory_int-unknown["0"]["0"] == 48) && \old(m) == 1) && 22 == unknown-#length-unknown["soft_float_2a.c.cil.c"]) && 0 == "0") && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0) || ((((((((((((((((((((m % 4294967296 < 16777216 && 0 <= "0") && e + 1 <= 0) && zero == 0) && ea <= 127) && 0 <= ea + 128) && 0 <= "soft_float_2a.c.cil.c") && 0 < 129 + e) && eb <= 127) && 0 <= "soft_float_2a.c.cil.c") && 0 <= eb + 128) && 0 <= "reach_error") && #NULL == 0) && m % 2 == 0) && "reach_error" == 0) && \old(e) == 0) && \old(m) == 1) && 0 <= unknown-#StackHeapBarrier-unknown) && "soft_float_2a.c.cil.c" <= 0) && 0 == "0") && #NULL == 0) [2021-11-07 01:34:46,571 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((((((((((((0 <= "0" && e + 1 <= 0) && zero == 0) && ea <= 127) && 0 <= ea + 128) && 0 <= "soft_float_2a.c.cil.c") && 0 < 129 + e) && eb <= 127) && 0 <= "soft_float_2a.c.cil.c") && 0 <= eb + 128) && 0 <= "reach_error") && #NULL == 0) && m % 2 == 0) && "reach_error" == 0) && \old(e) == 0) && \old(m) == 1) && 0 <= unknown-#StackHeapBarrier-unknown) && "soft_float_2a.c.cil.c" <= 0) && 0 == "0") && #NULL == 0 [2021-11-07 01:34:46,631 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5423519d-7aa6-4a1b-a223-f75ef5490f44/bin/utaipan-UUZaoUuFF8/witness.graphml [2021-11-07 01:34:46,631 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-07 01:34:46,632 INFO L168 Benchmark]: Toolchain (without parser) took 123773.89 ms. Allocated memory was 100.7 MB in the beginning and 163.6 MB in the end (delta: 62.9 MB). Free memory was 64.8 MB in the beginning and 93.2 MB in the end (delta: -28.4 MB). Peak memory consumption was 34.7 MB. Max. memory is 16.1 GB. [2021-11-07 01:34:46,632 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 100.7 MB. Free memory is still 80.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:34:46,632 INFO L168 Benchmark]: CACSL2BoogieTranslator took 329.77 ms. Allocated memory is still 100.7 MB. Free memory was 64.6 MB in the beginning and 74.3 MB in the end (delta: -9.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-07 01:34:46,633 INFO L168 Benchmark]: Boogie Procedure Inliner took 92.37 ms. Allocated memory is still 100.7 MB. Free memory was 74.3 MB in the beginning and 72.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 01:34:46,633 INFO L168 Benchmark]: Boogie Preprocessor took 60.92 ms. Allocated memory is still 100.7 MB. Free memory was 72.3 MB in the beginning and 70.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 01:34:46,633 INFO L168 Benchmark]: RCFGBuilder took 824.55 ms. Allocated memory is still 100.7 MB. Free memory was 70.6 MB in the beginning and 47.5 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2021-11-07 01:34:46,633 INFO L168 Benchmark]: TraceAbstraction took 122341.55 ms. Allocated memory was 100.7 MB in the beginning and 163.6 MB in the end (delta: 62.9 MB). Free memory was 47.1 MB in the beginning and 98.5 MB in the end (delta: -51.4 MB). Peak memory consumption was 74.3 MB. Max. memory is 16.1 GB. [2021-11-07 01:34:46,634 INFO L168 Benchmark]: Witness Printer took 117.87 ms. Allocated memory is still 163.6 MB. Free memory was 98.5 MB in the beginning and 93.2 MB in the end (delta: 5.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-11-07 01:34:46,635 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 100.7 MB. Free memory is still 80.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 329.77 ms. Allocated memory is still 100.7 MB. Free memory was 64.6 MB in the beginning and 74.3 MB in the end (delta: -9.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 92.37 ms. Allocated memory is still 100.7 MB. Free memory was 74.3 MB in the beginning and 72.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 60.92 ms. Allocated memory is still 100.7 MB. Free memory was 72.3 MB in the beginning and 70.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 824.55 ms. Allocated memory is still 100.7 MB. Free memory was 70.6 MB in the beginning and 47.5 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 122341.55 ms. Allocated memory was 100.7 MB in the beginning and 163.6 MB in the end (delta: 62.9 MB). Free memory was 47.1 MB in the beginning and 98.5 MB in the end (delta: -51.4 MB). Peak memory consumption was 74.3 MB. Max. memory is 16.1 GB. * Witness Printer took 117.87 ms. Allocated memory is still 163.6 MB. Free memory was 98.5 MB in the beginning and 93.2 MB in the end (delta: 5.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 55 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 122.2s, OverallIterations: 16, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 18.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.4s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 808 SDtfs, 1058 SDslu, 4408 SDs, 0 SdLazy, 6671 SolverSat, 99 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 15.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1078 GetRequests, 750 SyntacticMatches, 12 SemanticMatches, 316 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3053 ImplicationChecksByTransitivity, 88.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=86occurred in iteration=13, InterpolantAutomatonStates: 260, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 16 MinimizatonAttempts, 251 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 18 LocationsWithAnnotation, 18 PreInvPairs, 81 NumberOfFragments, 473 HoareAnnotationTreeSize, 18 FomulaSimplifications, 310475 FormulaSimplificationTreeSizeReduction, 0.4s HoareSimplificationTime, 18 FomulaSimplificationsInter, 2876 FormulaSimplificationTreeSizeReductionInter, 0.9s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 4.0s InterpolantComputationTime, 776 NumberOfCodeBlocks, 776 NumberOfCodeBlocksAsserted, 29 NumberOfCheckSat, 1097 ConstructedInterpolants, 0 QuantifiedInterpolants, 2666 SizeOfPredicates, 39 NumberOfNonLiveVariables, 1773 ConjunctsInSsa, 92 ConjunctsInUnsatCore, 42 InterpolantComputations, 9 PerfectInterpolantSequences, 18/87 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]: 5118, ICFG_INTERPRETER_ENTERED_PROCEDURES: 10, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 251, DAG_INTERPRETER_EARLY_EXITS: 10, TOOLS_POST_APPLICATIONS: 340, TOOLS_POST_TIME[ms]: 2284, 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: 340, TOOLS_QUANTIFIERELIM_TIME[ms]: 2186, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 256, FLUID_QUERY_TIME[ms]: 34, FLUID_QUERIES: 668, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 3, DOMAIN_JOIN_TIME[ms]: 248, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME[ms]: 0, DOMAIN_WIDEN_APPLICATIONS: 20, DOMAIN_WIDEN_TIME[ms]: 1384, DOMAIN_ISSUBSETEQ_APPLICATIONS: 30, DOMAIN_ISSUBSETEQ_TIME[ms]: 117, DOMAIN_ISBOTTOM_APPLICATIONS: 251, DOMAIN_ISBOTTOM_TIME[ms]: 850, LOOP_SUMMARIZER_APPLICATIONS: 10, LOOP_SUMMARIZER_CACHE_MISSES: 10, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 2017, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 2016, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 30, 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]: 6, PATH_EXPR_TIME[ms]: 12, REGEX_TO_DAG_TIME[ms]: 8, DAG_COMPRESSION_TIME[ms]: 80, DAG_COMPRESSION_PROCESSED_NODES: 4288, DAG_COMPRESSION_RETAINED_NODES: 636, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: zero == 0 - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: zero == 0 - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: zero == 0 - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: (((((((((((((((((((((((((unknown-#StackHeapBarrier-unknown < "reach_error" && ea <= 127) && unknown-#StackHeapBarrier-unknown < "soft_float_2a.c.cil.c") && 0 <= ea + 128) && \valid["soft_float_2a.c.cil.c"] == 1) && \valid["0"] == 1) && "soft_float_2a.c.cil.c" == 0) && eb <= 127) && \old(m) == 0) && __retres4 == 0) && 0 <= eb + 128) && \valid["reach_error"] == 1) && \old(m) == m) && \valid[0] == 0) && unknown-#StackHeapBarrier-unknown < "0") && unknown-#length-unknown["reach_error"] == 12) && unknown-#memory_int-unknown["0"][1 + "0"] == 0) && #NULL == 0) && "reach_error" == 0) && \old(e) == 0) && \old(e) == e) && unknown-#length-unknown["0"] == 2) && unknown-#memory_int-unknown["0"]["0"] == 48) && 22 == unknown-#length-unknown["soft_float_2a.c.cil.c"]) && 0 == "0") && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0 - InvariantResult [Line: 157]: Loop Invariant Derived loop invariant: (zero == 0 && sa == 1) || (zero == 0 && __retres10 == 0) - InvariantResult [Line: 57]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: zero == 0 - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 57]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 57]: Loop Invariant Derived loop invariant: zero == 0 - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: ((((((((((((((((((0 <= "0" && e + 1 <= 0) && zero == 0) && ea <= 127) && 0 <= ea + 128) && 0 <= "soft_float_2a.c.cil.c") && 0 < 129 + e) && eb <= 127) && 0 <= "soft_float_2a.c.cil.c") && 0 <= eb + 128) && 0 <= "reach_error") && #NULL == 0) && m % 2 == 0) && "reach_error" == 0) && \old(e) == 0) && \old(m) == 1) && 0 <= unknown-#StackHeapBarrier-unknown) && "soft_float_2a.c.cil.c" <= 0) && 0 == "0") && #NULL == 0 - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: ((((((((((((((((((((((((((unknown-#StackHeapBarrier-unknown < "reach_error" && zero == 0) && ea <= 127) && unknown-#StackHeapBarrier-unknown < "soft_float_2a.c.cil.c") && 0 <= ea + 128) && \valid["soft_float_2a.c.cil.c"] == 1) && \valid["0"] == 1) && "soft_float_2a.c.cil.c" == 0) && eb <= 127) && 0 <= eb + 128) && \valid["reach_error"] == 1) && \old(m) == m) && \valid[0] == 0) && unknown-#StackHeapBarrier-unknown < "0") && unknown-#length-unknown["reach_error"] == 12) && unknown-#memory_int-unknown["0"][1 + "0"] == 0) && #NULL == 0) && "reach_error" == 0) && \old(e) == e) && unknown-#length-unknown["0"] == 2) && e == 0) && unknown-#memory_int-unknown["0"]["0"] == 48) && \old(m) == 1) && 22 == unknown-#length-unknown["soft_float_2a.c.cil.c"]) && 0 == "0") && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0) || ((((((((((((((((((((m % 4294967296 < 16777216 && 0 <= "0") && e + 1 <= 0) && zero == 0) && ea <= 127) && 0 <= ea + 128) && 0 <= "soft_float_2a.c.cil.c") && 0 < 129 + e) && eb <= 127) && 0 <= "soft_float_2a.c.cil.c") && 0 <= eb + 128) && 0 <= "reach_error") && #NULL == 0) && m % 2 == 0) && "reach_error" == 0) && \old(e) == 0) && \old(m) == 1) && 0 <= unknown-#StackHeapBarrier-unknown) && "soft_float_2a.c.cil.c" <= 0) && 0 == "0") && #NULL == 0) - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: zero == 0 - InvariantResult [Line: 57]: Loop Invariant Derived loop invariant: zero == 0 - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: ((((((((((((((((0 <= "0" && e + 1 <= 0) && zero == 0) && ea <= 127) && 0 <= ea + 128) && 0 <= "soft_float_2a.c.cil.c") && eb <= 127) && 0 <= "soft_float_2a.c.cil.c") && 0 <= eb + 128) && 0 <= "reach_error") && #NULL == 0) && "reach_error" == 0) && \old(e) == 0) && \old(m) == 1) && 0 <= unknown-#StackHeapBarrier-unknown) && "soft_float_2a.c.cil.c" <= 0) && 0 == "0") && #NULL == 0 - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: zero == 0 - InvariantResult [Line: 256]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-11-07 01:34:46,899 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5423519d-7aa6-4a1b-a223-f75ef5490f44/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2021-11-07 01:34:46,905 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5423519d-7aa6-4a1b-a223-f75ef5490f44/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE