./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-simple/sll2c_update_all_reverse.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-simple/sll2c_update_all_reverse.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4fecbd384f63aa34e01807a3a6735a322a2435f1312f0df3ed763fde7f43fe0a --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 19:00:18,192 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 19:00:18,194 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 19:00:18,245 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 19:00:18,246 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 19:00:18,251 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 19:00:18,255 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 19:00:18,260 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 19:00:18,263 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 19:00:18,272 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 19:00:18,273 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 19:00:18,276 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 19:00:18,276 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 19:00:18,280 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 19:00:18,283 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 19:00:18,286 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 19:00:18,288 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 19:00:18,290 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 19:00:18,297 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 19:00:18,307 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 19:00:18,309 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 19:00:18,312 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 19:00:18,316 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 19:00:18,318 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 19:00:18,323 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 19:00:18,323 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 19:00:18,324 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 19:00:18,326 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 19:00:18,327 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 19:00:18,329 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 19:00:18,330 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 19:00:18,331 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 19:00:18,334 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 19:00:18,335 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 19:00:18,337 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 19:00:18,337 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 19:00:18,338 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 19:00:18,338 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 19:00:18,339 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 19:00:18,340 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 19:00:18,341 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 19:00:18,342 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-25 19:00:18,396 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 19:00:18,396 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 19:00:18,397 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 19:00:18,397 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 19:00:18,399 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 19:00:18,400 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 19:00:18,400 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 19:00:18,400 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 19:00:18,401 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 19:00:18,401 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 19:00:18,402 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 19:00:18,403 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 19:00:18,403 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 19:00:18,403 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 19:00:18,403 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 19:00:18,404 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 19:00:18,404 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 19:00:18,404 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 19:00:18,405 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-25 19:00:18,405 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-25 19:00:18,406 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 19:00:18,406 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 19:00:18,407 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-25 19:00:18,407 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 19:00:18,407 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 19:00:18,408 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 19:00:18,408 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-25 19:00:18,408 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-25 19:00:18,409 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-25 19:00:18,409 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 19:00:18,409 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-25 19:00:18,410 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 19:00:18,410 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 19:00:18,410 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 19:00:18,411 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 19:00:18,411 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:00:18,411 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 19:00:18,411 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 19:00:18,412 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 19:00:18,412 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 19:00:18,414 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 19:00:18,414 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 19:00:18,414 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_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4fecbd384f63aa34e01807a3a6735a322a2435f1312f0df3ed763fde7f43fe0a [2021-11-25 19:00:18,764 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 19:00:18,788 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 19:00:18,792 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 19:00:18,793 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 19:00:18,794 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 19:00:18,796 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/list-simple/sll2c_update_all_reverse.i [2021-11-25 19:00:18,868 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/data/f17f5ab39/f331e326ab4542dcb59f7b516f57270f/FLAGff198a7f9 [2021-11-25 19:00:19,550 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 19:00:19,551 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/sv-benchmarks/c/list-simple/sll2c_update_all_reverse.i [2021-11-25 19:00:19,570 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/data/f17f5ab39/f331e326ab4542dcb59f7b516f57270f/FLAGff198a7f9 [2021-11-25 19:00:19,793 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/data/f17f5ab39/f331e326ab4542dcb59f7b516f57270f [2021-11-25 19:00:19,798 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 19:00:19,800 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 19:00:19,801 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 19:00:19,802 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 19:00:19,814 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 19:00:19,815 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:00:19" (1/1) ... [2021-11-25 19:00:19,821 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5685a7c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:00:19, skipping insertion in model container [2021-11-25 19:00:19,821 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:00:19" (1/1) ... [2021-11-25 19:00:19,830 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 19:00:19,893 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 19:00:20,238 WARN L230 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_58d4c482-64dd-4ed7-a456-384411900e5f/sv-benchmarks/c/list-simple/sll2c_update_all_reverse.i[24436,24449] [2021-11-25 19:00:20,241 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:00:20,252 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 19:00:20,339 WARN L230 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_58d4c482-64dd-4ed7-a456-384411900e5f/sv-benchmarks/c/list-simple/sll2c_update_all_reverse.i[24436,24449] [2021-11-25 19:00:20,340 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:00:20,374 INFO L208 MainTranslator]: Completed translation [2021-11-25 19:00:20,374 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:00:20 WrapperNode [2021-11-25 19:00:20,374 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 19:00:20,376 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 19:00:20,376 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 19:00:20,376 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 19:00:20,385 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:00:20" (1/1) ... [2021-11-25 19:00:20,401 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:00:20" (1/1) ... [2021-11-25 19:00:20,436 INFO L137 Inliner]: procedures = 126, calls = 26, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 133 [2021-11-25 19:00:20,437 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 19:00:20,437 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 19:00:20,438 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 19:00:20,438 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 19:00:20,447 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:00:20" (1/1) ... [2021-11-25 19:00:20,448 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:00:20" (1/1) ... [2021-11-25 19:00:20,452 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:00:20" (1/1) ... [2021-11-25 19:00:20,453 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:00:20" (1/1) ... [2021-11-25 19:00:20,462 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:00:20" (1/1) ... [2021-11-25 19:00:20,467 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:00:20" (1/1) ... [2021-11-25 19:00:20,469 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:00:20" (1/1) ... [2021-11-25 19:00:20,474 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 19:00:20,475 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 19:00:20,475 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 19:00:20,475 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 19:00:20,477 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:00:20" (1/1) ... [2021-11-25 19:00:20,493 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:00:20,507 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:00:20,533 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 19:00:20,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 19:00:20,582 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 19:00:20,582 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 19:00:20,582 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2021-11-25 19:00:20,583 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2021-11-25 19:00:20,583 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 19:00:20,583 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 19:00:20,583 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 19:00:20,583 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 19:00:20,583 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 19:00:20,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 19:00:20,584 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 19:00:20,584 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 19:00:20,694 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 19:00:20,696 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 19:00:21,006 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 19:00:21,125 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 19:00:21,126 INFO L301 CfgBuilder]: Removed 6 assume(true) statements. [2021-11-25 19:00:21,129 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:00:21 BoogieIcfgContainer [2021-11-25 19:00:21,129 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 19:00:21,153 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 19:00:21,153 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 19:00:21,157 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 19:00:21,157 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 07:00:19" (1/3) ... [2021-11-25 19:00:21,158 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c5f9f1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:00:21, skipping insertion in model container [2021-11-25 19:00:21,158 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:00:20" (2/3) ... [2021-11-25 19:00:21,159 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c5f9f1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:00:21, skipping insertion in model container [2021-11-25 19:00:21,159 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:00:21" (3/3) ... [2021-11-25 19:00:21,160 INFO L111 eAbstractionObserver]: Analyzing ICFG sll2c_update_all_reverse.i [2021-11-25 19:00:21,166 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 19:00:21,166 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 28 error locations. [2021-11-25 19:00:21,218 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 19:00:21,226 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=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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 [2021-11-25 19:00:21,227 INFO L340 AbstractCegarLoop]: Starting to check reachability of 28 error locations. [2021-11-25 19:00:21,245 INFO L276 IsEmpty]: Start isEmpty. Operand has 65 states, 33 states have (on average 2.121212121212121) internal successors, (70), 61 states have internal predecessors, (70), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-25 19:00:21,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-25 19:00:21,254 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:00:21,255 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-25 19:00:21,256 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting node_createErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 24 more)] === [2021-11-25 19:00:21,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:00:21,262 INFO L85 PathProgramCache]: Analyzing trace with hash 198170915, now seen corresponding path program 1 times [2021-11-25 19:00:21,274 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:00:21,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643891523] [2021-11-25 19:00:21,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:00:21,276 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:00:21,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:00:21,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:00:21,478 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:00:21,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643891523] [2021-11-25 19:00:21,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643891523] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:00:21,480 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:00:21,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 19:00:21,482 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860145974] [2021-11-25 19:00:21,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:00:21,488 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:00:21,489 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:00:21,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:00:21,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:00:21,528 INFO L87 Difference]: Start difference. First operand has 65 states, 33 states have (on average 2.121212121212121) internal successors, (70), 61 states have internal predecessors, (70), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:00:21,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:00:21,636 INFO L93 Difference]: Finished difference Result 63 states and 71 transitions. [2021-11-25 19:00:21,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:00:21,639 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-11-25 19:00:21,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:00:21,649 INFO L225 Difference]: With dead ends: 63 [2021-11-25 19:00:21,649 INFO L226 Difference]: Without dead ends: 61 [2021-11-25 19:00:21,651 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:00:21,655 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 6 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:00:21,657 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 79 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:00:21,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-11-25 19:00:21,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2021-11-25 19:00:21,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 32 states have (on average 2.0) internal successors, (64), 57 states have internal predecessors, (64), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-25 19:00:21,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 68 transitions. [2021-11-25 19:00:21,702 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 68 transitions. Word has length 5 [2021-11-25 19:00:21,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:00:21,703 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 68 transitions. [2021-11-25 19:00:21,703 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:00:21,704 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 68 transitions. [2021-11-25 19:00:21,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-25 19:00:21,704 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:00:21,705 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-25 19:00:21,705 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 19:00:21,705 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting node_createErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 24 more)] === [2021-11-25 19:00:21,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:00:21,706 INFO L85 PathProgramCache]: Analyzing trace with hash 198170916, now seen corresponding path program 1 times [2021-11-25 19:00:21,707 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:00:21,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18148309] [2021-11-25 19:00:21,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:00:21,708 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:00:21,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:00:21,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:00:21,769 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:00:21,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18148309] [2021-11-25 19:00:21,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18148309] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:00:21,770 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:00:21,770 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 19:00:21,770 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668579618] [2021-11-25 19:00:21,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:00:21,772 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:00:21,772 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:00:21,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:00:21,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:00:21,774 INFO L87 Difference]: Start difference. First operand 61 states and 68 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:00:21,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:00:21,841 INFO L93 Difference]: Finished difference Result 59 states and 66 transitions. [2021-11-25 19:00:21,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:00:21,842 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-11-25 19:00:21,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:00:21,844 INFO L225 Difference]: With dead ends: 59 [2021-11-25 19:00:21,844 INFO L226 Difference]: Without dead ends: 59 [2021-11-25 19:00:21,845 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:00:21,847 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 2 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:00:21,848 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 83 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:00:21,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-11-25 19:00:21,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2021-11-25 19:00:21,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 32 states have (on average 1.9375) internal successors, (62), 55 states have internal predecessors, (62), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-25 19:00:21,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 66 transitions. [2021-11-25 19:00:21,857 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 66 transitions. Word has length 5 [2021-11-25 19:00:21,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:00:21,858 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 66 transitions. [2021-11-25 19:00:21,858 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:00:21,858 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 66 transitions. [2021-11-25 19:00:21,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-25 19:00:21,859 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:00:21,859 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:00:21,860 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 19:00:21,860 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 24 more)] === [2021-11-25 19:00:21,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:00:21,861 INFO L85 PathProgramCache]: Analyzing trace with hash -1927971198, now seen corresponding path program 1 times [2021-11-25 19:00:21,861 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:00:21,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129974713] [2021-11-25 19:00:21,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:00:21,862 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:00:21,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:00:21,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:00:21,923 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:00:21,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129974713] [2021-11-25 19:00:21,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129974713] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:00:21,924 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:00:21,925 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:00:21,925 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225632978] [2021-11-25 19:00:21,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:00:21,926 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:00:21,926 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:00:21,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:00:21,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:00:21,928 INFO L87 Difference]: Start difference. First operand 59 states and 66 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-25 19:00:21,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:00:21,999 INFO L93 Difference]: Finished difference Result 65 states and 73 transitions. [2021-11-25 19:00:22,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:00:22,000 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2021-11-25 19:00:22,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:00:22,002 INFO L225 Difference]: With dead ends: 65 [2021-11-25 19:00:22,007 INFO L226 Difference]: Without dead ends: 65 [2021-11-25 19:00:22,007 INFO L932 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 [2021-11-25 19:00:22,009 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 4 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:00:22,012 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 95 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:00:22,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-11-25 19:00:22,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 60. [2021-11-25 19:00:22,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 33 states have (on average 1.9090909090909092) internal successors, (63), 56 states have internal predecessors, (63), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-25 19:00:22,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 67 transitions. [2021-11-25 19:00:22,034 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 67 transitions. Word has length 10 [2021-11-25 19:00:22,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:00:22,035 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 67 transitions. [2021-11-25 19:00:22,035 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-25 19:00:22,036 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 67 transitions. [2021-11-25 19:00:22,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-25 19:00:22,037 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:00:22,038 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:00:22,039 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 19:00:22,039 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 24 more)] === [2021-11-25 19:00:22,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:00:22,040 INFO L85 PathProgramCache]: Analyzing trace with hash -1377774572, now seen corresponding path program 1 times [2021-11-25 19:00:22,040 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:00:22,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940750997] [2021-11-25 19:00:22,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:00:22,042 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:00:22,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:00:22,244 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-25 19:00:22,245 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:00:22,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940750997] [2021-11-25 19:00:22,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940750997] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:00:22,246 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:00:22,246 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:00:22,246 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323577472] [2021-11-25 19:00:22,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:00:22,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 19:00:22,249 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:00:22,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 19:00:22,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-25 19:00:22,251 INFO L87 Difference]: Start difference. First operand 60 states and 67 transitions. Second operand has 6 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-25 19:00:22,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:00:22,454 INFO L93 Difference]: Finished difference Result 79 states and 87 transitions. [2021-11-25 19:00:22,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 19:00:22,455 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2021-11-25 19:00:22,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:00:22,462 INFO L225 Difference]: With dead ends: 79 [2021-11-25 19:00:22,462 INFO L226 Difference]: Without dead ends: 79 [2021-11-25 19:00:22,463 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-25 19:00:22,473 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 54 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:00:22,475 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 140 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 19:00:22,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2021-11-25 19:00:22,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 59. [2021-11-25 19:00:22,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 33 states have (on average 1.878787878787879) internal successors, (62), 55 states have internal predecessors, (62), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-25 19:00:22,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 66 transitions. [2021-11-25 19:00:22,484 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 66 transitions. Word has length 17 [2021-11-25 19:00:22,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:00:22,484 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 66 transitions. [2021-11-25 19:00:22,485 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-25 19:00:22,485 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 66 transitions. [2021-11-25 19:00:22,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-25 19:00:22,485 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:00:22,486 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:00:22,486 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-25 19:00:22,486 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 24 more)] === [2021-11-25 19:00:22,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:00:22,487 INFO L85 PathProgramCache]: Analyzing trace with hash -1377774571, now seen corresponding path program 1 times [2021-11-25 19:00:22,487 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:00:22,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588360491] [2021-11-25 19:00:22,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:00:22,488 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:00:22,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:00:22,651 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-25 19:00:22,651 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:00:22,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588360491] [2021-11-25 19:00:22,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588360491] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:00:22,652 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:00:22,652 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:00:22,653 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93331078] [2021-11-25 19:00:22,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:00:22,654 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 19:00:22,654 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:00:22,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 19:00:22,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-25 19:00:22,656 INFO L87 Difference]: Start difference. First operand 59 states and 66 transitions. Second operand has 6 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-25 19:00:22,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:00:22,802 INFO L93 Difference]: Finished difference Result 59 states and 67 transitions. [2021-11-25 19:00:22,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 19:00:22,805 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2021-11-25 19:00:22,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:00:22,808 INFO L225 Difference]: With dead ends: 59 [2021-11-25 19:00:22,808 INFO L226 Difference]: Without dead ends: 59 [2021-11-25 19:00:22,809 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-25 19:00:22,815 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 54 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:00:22,816 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 149 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:00:22,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-11-25 19:00:22,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 58. [2021-11-25 19:00:22,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 33 states have (on average 1.8484848484848484) internal successors, (61), 54 states have internal predecessors, (61), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-25 19:00:22,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 65 transitions. [2021-11-25 19:00:22,832 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 65 transitions. Word has length 17 [2021-11-25 19:00:22,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:00:22,832 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 65 transitions. [2021-11-25 19:00:22,833 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-25 19:00:22,833 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 65 transitions. [2021-11-25 19:00:22,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-25 19:00:22,834 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:00:22,835 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:00:22,835 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-25 19:00:22,835 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 24 more)] === [2021-11-25 19:00:22,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:00:22,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1191271115, now seen corresponding path program 1 times [2021-11-25 19:00:22,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:00:22,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867307961] [2021-11-25 19:00:22,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:00:22,837 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:00:22,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:00:23,091 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-25 19:00:23,092 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:00:23,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867307961] [2021-11-25 19:00:23,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867307961] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:00:23,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1917483746] [2021-11-25 19:00:23,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:00:23,093 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:00:23,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:00:23,096 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:00:23,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 19:00:23,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:00:23,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-25 19:00:23,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:00:23,286 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 19:00:23,395 INFO L354 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2021-11-25 19:00:23,396 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 13 [2021-11-25 19:00:23,495 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-25 19:00:23,495 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:00:23,967 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-25 19:00:23,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1917483746] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:00:23,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [178575713] [2021-11-25 19:00:23,995 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2021-11-25 19:00:23,995 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:00:24,002 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:00:24,008 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:00:24,009 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:00:24,112 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 19:00:24,120 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-25 19:00:24,135 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-25 19:00:24,144 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 19:00:24,154 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 19:00:24,173 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 19:00:24,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:24,185 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2021-11-25 19:00:24,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:24,200 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2021-11-25 19:00:24,642 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 178 treesize of output 166 [2021-11-25 19:00:24,925 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-11-25 19:00:24,938 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 19:00:24,950 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-25 19:00:24,966 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-25 19:00:24,981 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-25 19:00:24,995 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:00:24,999 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:00:25,006 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:00:25,008 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:00:25,011 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:00:25,101 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 178 treesize of output 166 [2021-11-25 19:00:25,348 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-25 19:00:25,359 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-25 19:00:25,370 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-11-25 19:00:25,382 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-25 19:00:25,392 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 19:00:25,403 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:00:25,408 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:00:25,411 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:00:25,413 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:00:25,418 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:00:25,486 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2021-11-25 19:00:25,499 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2021-11-25 19:00:25,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:25,517 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2021-11-25 19:00:25,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:25,817 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 127 treesize of output 111 [2021-11-25 19:00:25,829 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:00:25,831 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 123 treesize of output 111 [2021-11-25 19:00:25,842 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:00:25,844 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 115 treesize of output 103 [2021-11-25 19:00:26,230 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 54 for LOIs [2021-11-25 19:00:26,570 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:00:30,435 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '841#(and (<= 2 |ULTIMATE.start_sll_circular_create_#in~len#1|) (not (= (select |#valid| |ULTIMATE.start_sll_circular_create_~last~0#1.base|) 1)) (<= |ULTIMATE.start_sll_circular_create_#in~data#1| 1) (<= |ULTIMATE.start_sll_circular_create_~last~0#1.offset| 0) (<= |ULTIMATE.start_sll_circular_create_#in~len#1| 2) (<= 0 |ULTIMATE.start_sll_circular_create_~last~0#1.offset|) (<= 1 |ULTIMATE.start_sll_circular_create_~data#1|) (<= 0 |ULTIMATE.start_sll_circular_create_~head~0#1.offset|) (<= 1 |ULTIMATE.start_sll_circular_create_#in~data#1|) (<= |ULTIMATE.start_sll_circular_create_~len#1| 1) (= |ULTIMATE.start_main_~data~0#1| 1) (<= |ULTIMATE.start_sll_circular_create_~data#1| 1) (<= |ULTIMATE.start_sll_circular_create_~head~0#1.offset| 0) (= |ULTIMATE.start_main_~len~0#1| 2) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2021-11-25 19:00:30,435 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 19:00:30,436 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 19:00:30,436 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10] total 17 [2021-11-25 19:00:30,436 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445759898] [2021-11-25 19:00:30,436 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 19:00:30,437 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-25 19:00:30,437 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:00:30,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-25 19:00:30,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=749, Unknown=0, NotChecked=0, Total=870 [2021-11-25 19:00:30,439 INFO L87 Difference]: Start difference. First operand 58 states and 65 transitions. Second operand has 18 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 13 states have internal predecessors, (25), 2 states have call successors, (3), 3 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-25 19:00:30,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:00:30,740 INFO L93 Difference]: Finished difference Result 81 states and 87 transitions. [2021-11-25 19:00:30,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-25 19:00:30,740 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 13 states have internal predecessors, (25), 2 states have call successors, (3), 3 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) Word has length 19 [2021-11-25 19:00:30,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:00:30,742 INFO L225 Difference]: With dead ends: 81 [2021-11-25 19:00:30,742 INFO L226 Difference]: Without dead ends: 81 [2021-11-25 19:00:30,743 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 35 SyntacticMatches, 3 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=159, Invalid=963, Unknown=0, NotChecked=0, Total=1122 [2021-11-25 19:00:30,744 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 202 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 74 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:00:30,744 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [202 Valid, 238 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 221 Invalid, 0 Unknown, 74 Unchecked, 0.2s Time] [2021-11-25 19:00:30,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-11-25 19:00:30,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 62. [2021-11-25 19:00:30,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 37 states have (on average 1.7297297297297298) internal successors, (64), 57 states have internal predecessors, (64), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-25 19:00:30,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 68 transitions. [2021-11-25 19:00:30,750 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 68 transitions. Word has length 19 [2021-11-25 19:00:30,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:00:30,751 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 68 transitions. [2021-11-25 19:00:30,751 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 13 states have internal predecessors, (25), 2 states have call successors, (3), 3 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-25 19:00:30,751 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 68 transitions. [2021-11-25 19:00:30,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-25 19:00:30,752 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:00:30,752 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:00:30,792 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-25 19:00:30,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:00:30,979 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 24 more)] === [2021-11-25 19:00:30,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:00:30,980 INFO L85 PathProgramCache]: Analyzing trace with hash -1191271114, now seen corresponding path program 1 times [2021-11-25 19:00:30,980 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:00:30,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734401591] [2021-11-25 19:00:30,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:00:30,981 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:00:31,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:00:31,124 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-25 19:00:31,125 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:00:31,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734401591] [2021-11-25 19:00:31,125 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734401591] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:00:31,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1342205252] [2021-11-25 19:00:31,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:00:31,125 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:00:31,126 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:00:31,128 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:00:31,154 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-25 19:00:31,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:00:31,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 35 conjunts are in the unsatisfiable core [2021-11-25 19:00:31,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:00:31,244 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 19:00:31,611 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 19:00:31,612 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2021-11-25 19:00:31,645 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-25 19:00:31,646 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-11-25 19:00:31,722 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:00:31,723 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:00:31,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1342205252] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:00:31,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [977950407] [2021-11-25 19:00:31,870 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2021-11-25 19:00:31,871 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:00:31,871 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:00:31,871 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:00:31,872 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:00:31,901 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 19:00:31,906 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-25 19:00:31,917 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 19:00:31,928 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-25 19:00:31,932 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 19:00:31,945 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 19:00:31,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:31,955 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2021-11-25 19:00:31,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:31,963 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2021-11-25 19:00:32,137 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 178 treesize of output 166 [2021-11-25 19:00:32,359 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-25 19:00:32,371 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 19:00:32,387 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-11-25 19:00:32,396 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-25 19:00:32,406 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-25 19:00:32,418 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:00:32,421 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:00:32,423 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:00:32,429 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:00:32,431 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:00:32,490 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 178 treesize of output 166 [2021-11-25 19:00:32,712 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-25 19:00:32,723 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-25 19:00:32,733 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 19:00:32,743 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-11-25 19:00:32,755 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-25 19:00:32,766 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:00:32,768 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:00:32,770 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:00:32,773 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:00:32,775 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:00:32,828 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2021-11-25 19:00:32,838 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2021-11-25 19:00:32,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:32,851 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2021-11-25 19:00:33,037 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 19:00:33,043 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-25 19:00:33,052 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 19:00:33,302 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 54 for LOIs [2021-11-25 19:00:33,574 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:00:37,172 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1094#(and (<= 2 |ULTIMATE.start_sll_circular_create_#in~len#1|) (<= |ULTIMATE.start_sll_circular_create_#in~data#1| 1) (<= |ULTIMATE.start_sll_circular_create_~last~0#1.offset| 0) (<= |ULTIMATE.start_sll_circular_create_#in~len#1| 2) (<= 0 |ULTIMATE.start_sll_circular_create_~last~0#1.offset|) (<= 1 |ULTIMATE.start_sll_circular_create_~data#1|) (<= 0 |ULTIMATE.start_sll_circular_create_~head~0#1.offset|) (<= 1 |ULTIMATE.start_sll_circular_create_#in~data#1|) (< (select |#length| |ULTIMATE.start_sll_circular_create_~last~0#1.base|) (+ |ULTIMATE.start_sll_circular_create_~last~0#1.offset| 4)) (<= |ULTIMATE.start_sll_circular_create_~len#1| 1) (= |ULTIMATE.start_main_~data~0#1| 1) (<= |ULTIMATE.start_sll_circular_create_~data#1| 1) (<= |ULTIMATE.start_sll_circular_create_~head~0#1.offset| 0) (= |ULTIMATE.start_main_~len~0#1| 2) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2021-11-25 19:00:37,172 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 19:00:37,172 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-25 19:00:37,172 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10] total 17 [2021-11-25 19:00:37,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935253662] [2021-11-25 19:00:37,173 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-25 19:00:37,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-25 19:00:37,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:00:37,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-25 19:00:37,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=888, Unknown=0, NotChecked=0, Total=992 [2021-11-25 19:00:37,175 INFO L87 Difference]: Start difference. First operand 62 states and 68 transitions. Second operand has 18 states, 13 states have (on average 2.230769230769231) internal successors, (29), 13 states have internal predecessors, (29), 3 states have call successors, (3), 3 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-25 19:00:37,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:00:37,678 INFO L93 Difference]: Finished difference Result 82 states and 89 transitions. [2021-11-25 19:00:37,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-25 19:00:37,679 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 13 states have (on average 2.230769230769231) internal successors, (29), 13 states have internal predecessors, (29), 3 states have call successors, (3), 3 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 19 [2021-11-25 19:00:37,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:00:37,680 INFO L225 Difference]: With dead ends: 82 [2021-11-25 19:00:37,680 INFO L226 Difference]: Without dead ends: 82 [2021-11-25 19:00:37,681 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=144, Invalid=1188, Unknown=0, NotChecked=0, Total=1332 [2021-11-25 19:00:37,681 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 119 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 450 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 90 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 19:00:37,682 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 273 Invalid, 549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 450 Invalid, 0 Unknown, 90 Unchecked, 0.3s Time] [2021-11-25 19:00:37,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-11-25 19:00:37,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 61. [2021-11-25 19:00:37,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 37 states have (on average 1.7027027027027026) internal successors, (63), 56 states have internal predecessors, (63), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-25 19:00:37,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 67 transitions. [2021-11-25 19:00:37,691 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 67 transitions. Word has length 19 [2021-11-25 19:00:37,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:00:37,692 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 67 transitions. [2021-11-25 19:00:37,692 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 13 states have (on average 2.230769230769231) internal successors, (29), 13 states have internal predecessors, (29), 3 states have call successors, (3), 3 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-25 19:00:37,692 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 67 transitions. [2021-11-25 19:00:37,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-25 19:00:37,693 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:00:37,697 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:00:37,735 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-25 19:00:37,917 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:00:37,917 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 24 more)] === [2021-11-25 19:00:37,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:00:37,917 INFO L85 PathProgramCache]: Analyzing trace with hash 161846627, now seen corresponding path program 1 times [2021-11-25 19:00:37,917 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:00:37,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640222768] [2021-11-25 19:00:37,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:00:37,918 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:00:37,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:00:38,026 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-25 19:00:38,027 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:00:38,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640222768] [2021-11-25 19:00:38,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640222768] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:00:38,030 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:00:38,030 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-25 19:00:38,030 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147039969] [2021-11-25 19:00:38,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:00:38,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-25 19:00:38,031 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:00:38,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-25 19:00:38,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-25 19:00:38,031 INFO L87 Difference]: Start difference. First operand 61 states and 67 transitions. Second operand has 9 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 8 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-25 19:00:38,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:00:38,254 INFO L93 Difference]: Finished difference Result 121 states and 133 transitions. [2021-11-25 19:00:38,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-25 19:00:38,255 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 8 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 22 [2021-11-25 19:00:38,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:00:38,256 INFO L225 Difference]: With dead ends: 121 [2021-11-25 19:00:38,256 INFO L226 Difference]: Without dead ends: 121 [2021-11-25 19:00:38,256 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-11-25 19:00:38,257 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 198 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:00:38,257 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [198 Valid, 251 Invalid, 336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 330 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 19:00:38,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2021-11-25 19:00:38,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 64. [2021-11-25 19:00:38,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 40 states have (on average 1.725) internal successors, (69), 59 states have internal predecessors, (69), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-25 19:00:38,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 73 transitions. [2021-11-25 19:00:38,264 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 73 transitions. Word has length 22 [2021-11-25 19:00:38,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:00:38,264 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 73 transitions. [2021-11-25 19:00:38,264 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 8 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-25 19:00:38,264 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 73 transitions. [2021-11-25 19:00:38,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-25 19:00:38,265 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:00:38,265 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:00:38,265 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-25 19:00:38,265 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 24 more)] === [2021-11-25 19:00:38,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:00:38,266 INFO L85 PathProgramCache]: Analyzing trace with hash 161846628, now seen corresponding path program 1 times [2021-11-25 19:00:38,266 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:00:38,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814074990] [2021-11-25 19:00:38,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:00:38,266 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:00:38,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:00:38,350 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-25 19:00:38,350 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:00:38,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814074990] [2021-11-25 19:00:38,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814074990] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:00:38,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [402371823] [2021-11-25 19:00:38,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:00:38,351 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:00:38,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:00:38,353 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:00:38,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-25 19:00:38,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:00:38,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-25 19:00:38,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:00:38,507 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 19:00:38,507 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:00:38,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [402371823] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:00:38,508 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 19:00:38,508 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 6 [2021-11-25 19:00:38,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944087108] [2021-11-25 19:00:38,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:00:38,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:00:38,509 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:00:38,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:00:38,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-25 19:00:38,510 INFO L87 Difference]: Start difference. First operand 64 states and 73 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-25 19:00:38,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:00:38,584 INFO L93 Difference]: Finished difference Result 85 states and 97 transitions. [2021-11-25 19:00:38,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 19:00:38,584 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 22 [2021-11-25 19:00:38,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:00:38,585 INFO L225 Difference]: With dead ends: 85 [2021-11-25 19:00:38,585 INFO L226 Difference]: Without dead ends: 85 [2021-11-25 19:00:38,586 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-11-25 19:00:38,588 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 90 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:00:38,589 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 130 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:00:38,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2021-11-25 19:00:38,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 67. [2021-11-25 19:00:38,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 43 states have (on average 1.6744186046511629) internal successors, (72), 62 states have internal predecessors, (72), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-25 19:00:38,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 76 transitions. [2021-11-25 19:00:38,605 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 76 transitions. Word has length 22 [2021-11-25 19:00:38,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:00:38,605 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 76 transitions. [2021-11-25 19:00:38,606 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-25 19:00:38,606 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 76 transitions. [2021-11-25 19:00:38,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-25 19:00:38,606 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:00:38,607 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:00:38,644 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-25 19:00:38,807 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:00:38,807 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 24 more)] === [2021-11-25 19:00:38,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:00:38,808 INFO L85 PathProgramCache]: Analyzing trace with hash 161842064, now seen corresponding path program 1 times [2021-11-25 19:00:38,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:00:38,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783305220] [2021-11-25 19:00:38,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:00:38,808 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:00:38,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:00:39,017 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-25 19:00:39,017 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:00:39,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783305220] [2021-11-25 19:00:39,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783305220] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:00:39,017 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:00:39,018 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-25 19:00:39,018 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170885761] [2021-11-25 19:00:39,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:00:39,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-25 19:00:39,018 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:00:39,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-25 19:00:39,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-25 19:00:39,019 INFO L87 Difference]: Start difference. First operand 67 states and 76 transitions. Second operand has 9 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 8 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-25 19:00:39,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:00:39,253 INFO L93 Difference]: Finished difference Result 104 states and 116 transitions. [2021-11-25 19:00:39,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-25 19:00:39,254 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 8 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 22 [2021-11-25 19:00:39,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:00:39,255 INFO L225 Difference]: With dead ends: 104 [2021-11-25 19:00:39,255 INFO L226 Difference]: Without dead ends: 104 [2021-11-25 19:00:39,256 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-11-25 19:00:39,256 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 191 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:00:39,257 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [191 Valid, 271 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 19:00:39,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2021-11-25 19:00:39,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 67. [2021-11-25 19:00:39,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 43 states have (on average 1.627906976744186) internal successors, (70), 62 states have internal predecessors, (70), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-25 19:00:39,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 74 transitions. [2021-11-25 19:00:39,261 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 74 transitions. Word has length 22 [2021-11-25 19:00:39,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:00:39,261 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 74 transitions. [2021-11-25 19:00:39,261 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 8 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-25 19:00:39,261 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 74 transitions. [2021-11-25 19:00:39,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-25 19:00:39,262 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:00:39,262 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:00:39,262 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-25 19:00:39,263 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 24 more)] === [2021-11-25 19:00:39,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:00:39,263 INFO L85 PathProgramCache]: Analyzing trace with hash 911528901, now seen corresponding path program 1 times [2021-11-25 19:00:39,263 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:00:39,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058235589] [2021-11-25 19:00:39,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:00:39,264 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:00:39,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:00:39,453 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:00:39,454 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:00:39,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058235589] [2021-11-25 19:00:39,454 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058235589] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:00:39,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [762340889] [2021-11-25 19:00:39,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:00:39,454 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:00:39,454 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:00:39,455 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:00:39,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-25 19:00:39,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:00:39,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 51 conjunts are in the unsatisfiable core [2021-11-25 19:00:39,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:00:39,584 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 19:00:39,633 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-25 19:00:39,633 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-11-25 19:00:39,648 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 19:00:39,671 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 19:00:39,672 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 29 [2021-11-25 19:00:39,738 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-25 19:00:39,743 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:00:39,744 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:00:39,771 INFO L354 Elim1Store]: treesize reduction 5, result has 66.7 percent of original size [2021-11-25 19:00:39,772 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2021-11-25 19:00:39,776 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_465 (Array Int Int))) (= |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_465) |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|))) is different from false [2021-11-25 19:00:39,786 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:00:39,786 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 19 [2021-11-25 19:00:39,790 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-11-25 19:00:39,793 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2021-11-25 19:00:39,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [762340889] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:00:39,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [285120342] [2021-11-25 19:00:39,858 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2021-11-25 19:00:39,858 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:00:39,858 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:00:39,859 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:00:39,859 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:00:39,885 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 19:00:39,888 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-25 19:00:39,899 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 19:00:39,903 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-25 19:00:39,916 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 19:00:39,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:39,929 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2021-11-25 19:00:39,936 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 19:00:39,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:39,943 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2021-11-25 19:00:40,108 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 178 treesize of output 166 [2021-11-25 19:00:40,278 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-25 19:00:40,287 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-25 19:00:40,294 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-25 19:00:40,303 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-25 19:00:40,312 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-25 19:00:40,323 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:00:40,324 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:00:40,328 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:00:40,330 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:00:40,394 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 178 treesize of output 166 [2021-11-25 19:00:40,555 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-25 19:00:40,564 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-25 19:00:40,574 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-25 19:00:40,582 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-25 19:00:40,591 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-25 19:00:40,601 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:00:40,604 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:00:40,608 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:00:40,609 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:00:40,666 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2021-11-25 19:00:40,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:40,679 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2021-11-25 19:00:40,692 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2021-11-25 19:00:40,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:40,920 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 127 treesize of output 111 [2021-11-25 19:00:40,928 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:00:40,929 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 123 treesize of output 111 [2021-11-25 19:00:40,937 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:00:40,938 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 119 treesize of output 107 [2021-11-25 19:00:41,229 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 19:00:41,239 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-25 19:00:41,247 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 19:00:41,466 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 54 for LOIs [2021-11-25 19:00:41,697 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:00:47,195 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1996#(and (<= 2 |ULTIMATE.start_sll_circular_create_#in~len#1|) (<= 0 |ULTIMATE.start_main_~s~0#1.offset|) (<= |ULTIMATE.start_sll_circular_update_at_#in~head#1.offset| 0) (<= |ULTIMATE.start_sll_circular_update_at_#in~data#1| 3) (<= 1 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_sll_circular_create_#in~data#1| 1) (<= |ULTIMATE.start_sll_circular_create_~last~0#1.offset| 0) (<= |ULTIMATE.start_sll_circular_create_#res#1.offset| 0) (<= |ULTIMATE.start_sll_circular_create_#in~len#1| 2) (<= |ULTIMATE.start_sll_circular_update_at_~data#1| 3) (<= 0 |ULTIMATE.start_sll_circular_create_~last~0#1.offset|) (<= 1 |ULTIMATE.start_sll_circular_create_~data#1|) (<= 0 |ULTIMATE.start_sll_circular_create_~head~0#1.offset|) (<= 1 |ULTIMATE.start_sll_circular_create_#in~data#1|) (not (= (select |#valid| |ULTIMATE.start_sll_circular_update_at_~head#1.base|) 1)) (<= |ULTIMATE.start_sll_circular_update_at_~index#1| 0) (<= |ULTIMATE.start_sll_circular_create_~len#1| 1) (<= |ULTIMATE.start_sll_circular_update_at_#in~index#1| 1) (= |ULTIMATE.start_main_~data~0#1| 1) (<= |ULTIMATE.start_sll_circular_create_~data#1| 1) (<= 3 |ULTIMATE.start_sll_circular_update_at_~data#1|) (<= 3 |ULTIMATE.start_sll_circular_update_at_#in~data#1|) (<= |ULTIMATE.start_sll_circular_create_~head~0#1.offset| 0) (= |ULTIMATE.start_main_~len~0#1| 2) (= |#NULL.offset| 0) (<= 3 |ULTIMATE.start_main_~new_data~0#1|) (<= 0 |ULTIMATE.start_sll_circular_update_at_#in~head#1.offset|) (<= 0 |ULTIMATE.start_sll_circular_create_#res#1.offset|) (<= |ULTIMATE.start_main_~i~0#1| 1) (<= |ULTIMATE.start_main_~new_data~0#1| 3) (<= 1 |ULTIMATE.start_sll_circular_update_at_#in~index#1|) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~s~0#1.offset| 0) (= |#NULL.base| 0))' at error location [2021-11-25 19:00:47,195 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 19:00:47,195 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-25 19:00:47,195 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 16 [2021-11-25 19:00:47,195 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669620893] [2021-11-25 19:00:47,196 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-25 19:00:47,196 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-25 19:00:47,196 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:00:47,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-25 19:00:47,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=1025, Unknown=1, NotChecked=64, Total=1190 [2021-11-25 19:00:47,197 INFO L87 Difference]: Start difference. First operand 67 states and 74 transitions. Second operand has 17 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 14 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-25 19:00:47,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:00:47,630 INFO L93 Difference]: Finished difference Result 107 states and 119 transitions. [2021-11-25 19:00:47,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-25 19:00:47,631 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 14 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 24 [2021-11-25 19:00:47,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:00:47,633 INFO L225 Difference]: With dead ends: 107 [2021-11-25 19:00:47,633 INFO L226 Difference]: Without dead ends: 107 [2021-11-25 19:00:47,634 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=135, Invalid=1350, Unknown=1, NotChecked=74, Total=1560 [2021-11-25 19:00:47,635 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 81 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 587 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 398 SdHoareTripleChecker+Invalid, 601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 587 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 19:00:47,635 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 398 Invalid, 601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 587 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-25 19:00:47,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-11-25 19:00:47,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 78. [2021-11-25 19:00:47,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 53 states have (on average 1.5849056603773586) internal successors, (84), 72 states have internal predecessors, (84), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-25 19:00:47,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 90 transitions. [2021-11-25 19:00:47,647 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 90 transitions. Word has length 24 [2021-11-25 19:00:47,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:00:47,648 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 90 transitions. [2021-11-25 19:00:47,649 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 14 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-25 19:00:47,649 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 90 transitions. [2021-11-25 19:00:47,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-25 19:00:47,653 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:00:47,653 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:00:47,693 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-25 19:00:47,879 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:00:47,879 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 24 more)] === [2021-11-25 19:00:47,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:00:47,880 INFO L85 PathProgramCache]: Analyzing trace with hash 911528902, now seen corresponding path program 1 times [2021-11-25 19:00:47,880 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:00:47,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155968909] [2021-11-25 19:00:47,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:00:47,880 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:00:47,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:00:48,276 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:00:48,276 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:00:48,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155968909] [2021-11-25 19:00:48,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155968909] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:00:48,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [505810944] [2021-11-25 19:00:48,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:00:48,277 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:00:48,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:00:48,278 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:00:48,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-25 19:00:48,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:00:48,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 65 conjunts are in the unsatisfiable core [2021-11-25 19:00:48,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:00:48,406 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 19:00:48,606 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-25 19:00:48,606 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-11-25 19:00:48,671 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: line 256583 column 46: unknown constant v_#length_BEFORE_CALL_58 [2021-11-25 19:00:48,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1643402652] [2021-11-25 19:00:48,673 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2021-11-25 19:00:48,673 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:00:48,674 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:00:48,674 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:00:48,674 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:00:48,724 FATAL L? ?]: Ignoring exception! java.lang.IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@62fb3444 at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:82) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker.assertLhs(IncrementalPlicationChecker.java:103) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker.checkPlication(IncrementalPlicationChecker.java:135) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.ArrayIndexEqualityManager.(ArrayIndexEqualityManager.java:92) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.applyComplexEliminationRules(ElimStorePlain.java:401) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:184) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne3(DualJunctionSaa.java:166) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne2(DualJunctionSaa.java:154) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne1(DualJunctionSaa.java:142) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne0(DualJunctionSaa.java:124) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne(DualJunctionSaa.java:110) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryExhaustivelyToEliminate(DualJunctionSaa.java:95) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:90) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToEliminateOne(QuantifierPusher.java:903) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyNewEliminationTechniquesExhaustively(QuantifierPusher.java:865) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyDualJunctionEliminationTechniques(QuantifierPusher.java:783) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective2(QuantifierPusher.java:425) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:355) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:162) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:169) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:77) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:243) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:233) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.newQuantifier(SymbolicTools.java:285) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.projectExistentially(SymbolicTools.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermDomainOperationProvider.projectExistentially(TermDomainOperationProvider.java:1) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateTransformer.strongestPostcondition(PredicateTransformer.java:131) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.post(SymbolicTools.java:119) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretInternal(DagInterpreter.java:227) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:209) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpretForSingleMarker(DagInterpreter.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.computeTopSummary(TopInputCallSummarizer.java:85) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.summarize(TopInputCallSummarizer.java:71) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretCallReturnSummary(DagInterpreter.java:220) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:207) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-25 19:00:48,726 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-25 19:00:48,727 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2021-11-25 19:00:48,727 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118180805] [2021-11-25 19:00:48,727 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-25 19:00:48,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-25 19:00:48,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:00:48,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-25 19:00:48,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2021-11-25 19:00:48,729 INFO L87 Difference]: Start difference. First operand 78 states and 90 transitions. Second operand has 16 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 13 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-25 19:00:48,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 19:00:48,730 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2021-11-25 19:00:48,730 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:00:48,731 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 19:00:48,803 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-25 19:00:48,932 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-25 19:00:48,932 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@62fb3444 at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:82) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.assertCodeBlock(IncrementalHoareTripleChecker.java:360) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.prepareAssertionStackAndAddTransition(IncrementalHoareTripleChecker.java:206) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.checkInternal(IncrementalHoareTripleChecker.java:131) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker$ProtectedHtc.checkInternal(ChainingHoareTripleChecker.java:455) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker.checkInternal(ChainingHoareTripleChecker.java:103) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.checkInternal(CachingHoareTripleChecker.java:95) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton$InternalSuccessorComputationHelper.computeSuccWithSolver(AbstractInterpolantAutomaton.java:357) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.chooseFalseSuccessor2(BasicAbstractInterpolantAutomaton.java:107) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:73) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:233) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.internalSuccessors(TotalizeNwa.java:213) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.internalSuccessors(ComplementDeterministicNwa.java:121) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:216) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:208) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addInternalsAndSuccessors(NestedWordAutomatonReachableStates.java:1058) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:960) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:182) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:868) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:784) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:462) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:420) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-25 19:00:48,934 INFO L158 Benchmark]: Toolchain (without parser) took 29134.49ms. Allocated memory was 90.2MB in the beginning and 201.3MB in the end (delta: 111.1MB). Free memory was 68.4MB in the beginning and 140.3MB in the end (delta: -71.9MB). Peak memory consumption was 38.9MB. Max. memory is 16.1GB. [2021-11-25 19:00:48,935 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 90.2MB. Free memory was 65.3MB in the beginning and 65.2MB in the end (delta: 53.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 19:00:48,935 INFO L158 Benchmark]: CACSL2BoogieTranslator took 573.57ms. Allocated memory is still 90.2MB. Free memory was 68.3MB in the beginning and 56.8MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-25 19:00:48,935 INFO L158 Benchmark]: Boogie Procedure Inliner took 61.10ms. Allocated memory is still 90.2MB. Free memory was 56.7MB in the beginning and 54.4MB in the end (delta: 2.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-25 19:00:48,936 INFO L158 Benchmark]: Boogie Preprocessor took 36.59ms. Allocated memory is still 90.2MB. Free memory was 54.4MB in the beginning and 52.6MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 19:00:48,936 INFO L158 Benchmark]: RCFGBuilder took 654.73ms. Allocated memory was 90.2MB in the beginning and 109.1MB in the end (delta: 18.9MB). Free memory was 52.6MB in the beginning and 83.0MB in the end (delta: -30.4MB). Peak memory consumption was 24.2MB. Max. memory is 16.1GB. [2021-11-25 19:00:48,936 INFO L158 Benchmark]: TraceAbstraction took 27780.90ms. Allocated memory was 109.1MB in the beginning and 201.3MB in the end (delta: 92.3MB). Free memory was 83.8MB in the beginning and 140.3MB in the end (delta: -56.5MB). Peak memory consumption was 34.9MB. Max. memory is 16.1GB. [2021-11-25 19:00:48,938 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37ms. Allocated memory is still 90.2MB. Free memory was 65.3MB in the beginning and 65.2MB in the end (delta: 53.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 573.57ms. Allocated memory is still 90.2MB. Free memory was 68.3MB in the beginning and 56.8MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 61.10ms. Allocated memory is still 90.2MB. Free memory was 56.7MB in the beginning and 54.4MB in the end (delta: 2.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 36.59ms. Allocated memory is still 90.2MB. Free memory was 54.4MB in the beginning and 52.6MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 654.73ms. Allocated memory was 90.2MB in the beginning and 109.1MB in the end (delta: 18.9MB). Free memory was 52.6MB in the beginning and 83.0MB in the end (delta: -30.4MB). Peak memory consumption was 24.2MB. Max. memory is 16.1GB. * TraceAbstraction took 27780.90ms. Allocated memory was 109.1MB in the beginning and 201.3MB in the end (delta: 92.3MB). Free memory was 83.8MB in the beginning and 140.3MB in the end (delta: -56.5MB). Peak memory consumption was 34.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@62fb3444 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@62fb3444: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:82) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-25 19:00:48,962 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 1 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-simple/sll2c_update_all_reverse.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4fecbd384f63aa34e01807a3a6735a322a2435f1312f0df3ed763fde7f43fe0a --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 19:00:51,529 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 19:00:51,532 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 19:00:51,587 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 19:00:51,587 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 19:00:51,589 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 19:00:51,591 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 19:00:51,595 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 19:00:51,600 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 19:00:51,603 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 19:00:51,604 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 19:00:51,607 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 19:00:51,608 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 19:00:51,615 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 19:00:51,617 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 19:00:51,619 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 19:00:51,621 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 19:00:51,622 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 19:00:51,628 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 19:00:51,634 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 19:00:51,637 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 19:00:51,641 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 19:00:51,644 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 19:00:51,646 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 19:00:51,650 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 19:00:51,655 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 19:00:51,655 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 19:00:51,658 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 19:00:51,658 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 19:00:51,660 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 19:00:51,660 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 19:00:51,661 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 19:00:51,663 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 19:00:51,664 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 19:00:51,666 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 19:00:51,666 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 19:00:51,668 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 19:00:51,668 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 19:00:51,669 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 19:00:51,671 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 19:00:51,672 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 19:00:51,673 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-11-25 19:00:51,726 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 19:00:51,727 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 19:00:51,728 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 19:00:51,728 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 19:00:51,729 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 19:00:51,729 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 19:00:51,729 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 19:00:51,730 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 19:00:51,731 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 19:00:51,731 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 19:00:51,732 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 19:00:51,732 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 19:00:51,734 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-25 19:00:51,735 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-25 19:00:51,735 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 19:00:51,735 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 19:00:51,735 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-25 19:00:51,736 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 19:00:51,736 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 19:00:51,736 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 19:00:51,736 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-25 19:00:51,737 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-25 19:00:51,737 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-25 19:00:51,737 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 19:00:51,737 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-25 19:00:51,738 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-25 19:00:51,738 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-25 19:00:51,738 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 19:00:51,738 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 19:00:51,739 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 19:00:51,739 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-25 19:00:51,739 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 19:00:51,740 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:00:51,740 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 19:00:51,740 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 19:00:51,741 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-25 19:00:51,741 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-25 19:00:51,741 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 19:00:51,741 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 19:00:51,741 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4fecbd384f63aa34e01807a3a6735a322a2435f1312f0df3ed763fde7f43fe0a [2021-11-25 19:00:52,140 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 19:00:52,164 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 19:00:52,167 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 19:00:52,169 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 19:00:52,169 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 19:00:52,171 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/list-simple/sll2c_update_all_reverse.i [2021-11-25 19:00:52,244 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/data/4c4470401/6ec3853fc5c0454d941f40055df6c64d/FLAGfc9867ae2 [2021-11-25 19:00:52,903 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 19:00:52,906 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/sv-benchmarks/c/list-simple/sll2c_update_all_reverse.i [2021-11-25 19:00:52,922 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/data/4c4470401/6ec3853fc5c0454d941f40055df6c64d/FLAGfc9867ae2 [2021-11-25 19:00:53,156 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/data/4c4470401/6ec3853fc5c0454d941f40055df6c64d [2021-11-25 19:00:53,158 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 19:00:53,160 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 19:00:53,161 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 19:00:53,162 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 19:00:53,178 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 19:00:53,179 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:00:53" (1/1) ... [2021-11-25 19:00:53,181 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23e62dbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:00:53, skipping insertion in model container [2021-11-25 19:00:53,181 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:00:53" (1/1) ... [2021-11-25 19:00:53,187 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 19:00:53,232 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 19:00:53,655 WARN L230 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_58d4c482-64dd-4ed7-a456-384411900e5f/sv-benchmarks/c/list-simple/sll2c_update_all_reverse.i[24436,24449] [2021-11-25 19:00:53,664 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:00:53,683 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 19:00:53,749 WARN L230 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_58d4c482-64dd-4ed7-a456-384411900e5f/sv-benchmarks/c/list-simple/sll2c_update_all_reverse.i[24436,24449] [2021-11-25 19:00:53,749 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:00:53,783 INFO L208 MainTranslator]: Completed translation [2021-11-25 19:00:53,784 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:00:53 WrapperNode [2021-11-25 19:00:53,784 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 19:00:53,785 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 19:00:53,785 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 19:00:53,785 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 19:00:53,793 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:00:53" (1/1) ... [2021-11-25 19:00:53,812 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:00:53" (1/1) ... [2021-11-25 19:00:53,855 INFO L137 Inliner]: procedures = 129, calls = 26, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 133 [2021-11-25 19:00:53,856 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 19:00:53,857 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 19:00:53,857 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 19:00:53,857 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 19:00:53,866 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:00:53" (1/1) ... [2021-11-25 19:00:53,867 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:00:53" (1/1) ... [2021-11-25 19:00:53,871 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:00:53" (1/1) ... [2021-11-25 19:00:53,871 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:00:53" (1/1) ... [2021-11-25 19:00:53,894 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:00:53" (1/1) ... [2021-11-25 19:00:53,899 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:00:53" (1/1) ... [2021-11-25 19:00:53,902 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:00:53" (1/1) ... [2021-11-25 19:00:53,906 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 19:00:53,907 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 19:00:53,907 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 19:00:53,908 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 19:00:53,909 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:00:53" (1/1) ... [2021-11-25 19:00:53,916 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:00:53,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:00:53,943 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 19:00:53,963 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 19:00:54,004 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-25 19:00:54,007 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2021-11-25 19:00:54,007 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2021-11-25 19:00:54,008 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 19:00:54,008 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 19:00:54,008 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 19:00:54,008 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 19:00:54,009 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 19:00:54,009 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-25 19:00:54,009 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-25 19:00:54,009 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 19:00:54,009 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 19:00:54,207 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 19:00:54,220 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 19:00:54,740 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 19:00:54,753 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 19:00:54,753 INFO L301 CfgBuilder]: Removed 6 assume(true) statements. [2021-11-25 19:00:54,756 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:00:54 BoogieIcfgContainer [2021-11-25 19:00:54,756 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 19:00:54,758 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 19:00:54,758 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 19:00:54,762 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 19:00:54,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 07:00:53" (1/3) ... [2021-11-25 19:00:54,763 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b561037 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:00:54, skipping insertion in model container [2021-11-25 19:00:54,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:00:53" (2/3) ... [2021-11-25 19:00:54,764 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b561037 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:00:54, skipping insertion in model container [2021-11-25 19:00:54,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:00:54" (3/3) ... [2021-11-25 19:00:54,766 INFO L111 eAbstractionObserver]: Analyzing ICFG sll2c_update_all_reverse.i [2021-11-25 19:00:54,773 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 19:00:54,773 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 28 error locations. [2021-11-25 19:00:54,845 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 19:00:54,857 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=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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 [2021-11-25 19:00:54,857 INFO L340 AbstractCegarLoop]: Starting to check reachability of 28 error locations. [2021-11-25 19:00:54,885 INFO L276 IsEmpty]: Start isEmpty. Operand has 83 states, 51 states have (on average 1.8431372549019607) internal successors, (94), 79 states have internal predecessors, (94), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-25 19:00:54,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-25 19:00:54,896 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:00:54,896 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-25 19:00:54,897 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting node_createErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 24 more)] === [2021-11-25 19:00:54,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:00:54,904 INFO L85 PathProgramCache]: Analyzing trace with hash 894505749, now seen corresponding path program 1 times [2021-11-25 19:00:54,917 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:00:54,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1246835132] [2021-11-25 19:00:54,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:00:54,919 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:00:54,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:00:54,926 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:00:54,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-25 19:00:55,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:00:55,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 19:00:55,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:00:55,189 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 19:00:55,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:00:55,229 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:00:55,229 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:00:55,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1246835132] [2021-11-25 19:00:55,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1246835132] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:00:55,231 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:00:55,232 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 19:00:55,234 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369242625] [2021-11-25 19:00:55,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:00:55,240 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:00:55,240 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:00:55,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:00:55,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:00:55,291 INFO L87 Difference]: Start difference. First operand has 83 states, 51 states have (on average 1.8431372549019607) internal successors, (94), 79 states have internal predecessors, (94), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:00:55,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:00:55,484 INFO L93 Difference]: Finished difference Result 81 states and 89 transitions. [2021-11-25 19:00:55,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:00:55,487 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-25 19:00:55,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:00:55,497 INFO L225 Difference]: With dead ends: 81 [2021-11-25 19:00:55,498 INFO L226 Difference]: Without dead ends: 78 [2021-11-25 19:00:55,500 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:00:55,504 INFO L933 BasicCegarLoop]: 82 mSDtfsCounter, 8 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:00:55,506 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 135 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 19:00:55,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-11-25 19:00:55,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2021-11-25 19:00:55,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 49 states have (on average 1.653061224489796) internal successors, (81), 74 states have internal predecessors, (81), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-25 19:00:55,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 85 transitions. [2021-11-25 19:00:55,555 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 85 transitions. Word has length 6 [2021-11-25 19:00:55,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:00:55,556 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 85 transitions. [2021-11-25 19:00:55,557 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:00:55,557 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 85 transitions. [2021-11-25 19:00:55,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-25 19:00:55,558 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:00:55,558 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-25 19:00:55,583 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-25 19:00:55,770 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:00:55,770 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting node_createErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 24 more)] === [2021-11-25 19:00:55,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:00:55,771 INFO L85 PathProgramCache]: Analyzing trace with hash 894505750, now seen corresponding path program 1 times [2021-11-25 19:00:55,776 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:00:55,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [594465154] [2021-11-25 19:00:55,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:00:55,777 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:00:55,777 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:00:55,778 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:00:55,788 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-25 19:00:55,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:00:55,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-25 19:00:55,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:00:55,869 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 19:00:55,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:00:55,894 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:00:55,894 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:00:55,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [594465154] [2021-11-25 19:00:55,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [594465154] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:00:55,895 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:00:55,895 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 19:00:55,895 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906291458] [2021-11-25 19:00:55,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:00:55,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:00:55,897 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:00:55,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:00:55,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:00:55,899 INFO L87 Difference]: Start difference. First operand 78 states and 85 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:00:56,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:00:56,048 INFO L93 Difference]: Finished difference Result 76 states and 83 transitions. [2021-11-25 19:00:56,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:00:56,049 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-25 19:00:56,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:00:56,051 INFO L225 Difference]: With dead ends: 76 [2021-11-25 19:00:56,051 INFO L226 Difference]: Without dead ends: 76 [2021-11-25 19:00:56,051 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:00:56,053 INFO L933 BasicCegarLoop]: 79 mSDtfsCounter, 4 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:00:56,054 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 137 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:00:56,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-11-25 19:00:56,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2021-11-25 19:00:56,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 49 states have (on average 1.6122448979591837) internal successors, (79), 72 states have internal predecessors, (79), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-25 19:00:56,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 83 transitions. [2021-11-25 19:00:56,067 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 83 transitions. Word has length 6 [2021-11-25 19:00:56,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:00:56,067 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 83 transitions. [2021-11-25 19:00:56,067 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:00:56,068 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 83 transitions. [2021-11-25 19:00:56,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-25 19:00:56,068 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:00:56,069 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:00:56,084 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-25 19:00:56,280 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:00:56,281 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 24 more)] === [2021-11-25 19:00:56,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:00:56,282 INFO L85 PathProgramCache]: Analyzing trace with hash -835957545, now seen corresponding path program 1 times [2021-11-25 19:00:56,282 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:00:56,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1303063927] [2021-11-25 19:00:56,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:00:56,283 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:00:56,283 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:00:56,284 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:00:56,318 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-25 19:00:56,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:00:56,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-25 19:00:56,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:00:56,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:00:56,491 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:00:56,492 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:00:56,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1303063927] [2021-11-25 19:00:56,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1303063927] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:00:56,492 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:00:56,493 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:00:56,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978981579] [2021-11-25 19:00:56,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:00:56,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:00:56,494 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:00:56,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:00:56,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:00:56,495 INFO L87 Difference]: Start difference. First operand 76 states and 83 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-25 19:00:56,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:00:56,518 INFO L93 Difference]: Finished difference Result 83 states and 91 transitions. [2021-11-25 19:00:56,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:00:56,519 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2021-11-25 19:00:56,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:00:56,521 INFO L225 Difference]: With dead ends: 83 [2021-11-25 19:00:56,521 INFO L226 Difference]: Without dead ends: 83 [2021-11-25 19:00:56,522 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:00:56,524 INFO L933 BasicCegarLoop]: 82 mSDtfsCounter, 5 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:00:56,525 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 159 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 19:00:56,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-11-25 19:00:56,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 77. [2021-11-25 19:00:56,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 50 states have (on average 1.6) internal successors, (80), 73 states have internal predecessors, (80), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-25 19:00:56,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 84 transitions. [2021-11-25 19:00:56,539 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 84 transitions. Word has length 13 [2021-11-25 19:00:56,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:00:56,539 INFO L470 AbstractCegarLoop]: Abstraction has 77 states and 84 transitions. [2021-11-25 19:00:56,540 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-25 19:00:56,540 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 84 transitions. [2021-11-25 19:00:56,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-25 19:00:56,541 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:00:56,541 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:00:56,556 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-25 19:00:56,752 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:00:56,753 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 24 more)] === [2021-11-25 19:00:56,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:00:56,754 INFO L85 PathProgramCache]: Analyzing trace with hash -125034980, now seen corresponding path program 1 times [2021-11-25 19:00:56,754 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:00:56,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1171715964] [2021-11-25 19:00:56,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:00:56,755 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:00:56,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:00:56,760 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:00:56,793 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-25 19:00:56,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:00:56,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-25 19:00:56,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:00:56,953 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 19:00:57,048 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-25 19:00:57,050 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:00:57,050 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:00:57,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1171715964] [2021-11-25 19:00:57,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1171715964] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:00:57,056 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:00:57,056 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:00:57,057 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24467127] [2021-11-25 19:00:57,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:00:57,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 19:00:57,058 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:00:57,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 19:00:57,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-25 19:00:57,059 INFO L87 Difference]: Start difference. First operand 77 states and 84 transitions. Second operand has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-25 19:00:57,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:00:57,457 INFO L93 Difference]: Finished difference Result 97 states and 105 transitions. [2021-11-25 19:00:57,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 19:00:57,458 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 22 [2021-11-25 19:00:57,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:00:57,461 INFO L225 Difference]: With dead ends: 97 [2021-11-25 19:00:57,461 INFO L226 Difference]: Without dead ends: 97 [2021-11-25 19:00:57,462 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-25 19:00:57,463 INFO L933 BasicCegarLoop]: 58 mSDtfsCounter, 68 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 19:00:57,464 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 227 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 19:00:57,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2021-11-25 19:00:57,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 76. [2021-11-25 19:00:57,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 50 states have (on average 1.58) internal successors, (79), 72 states have internal predecessors, (79), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-25 19:00:57,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 83 transitions. [2021-11-25 19:00:57,490 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 83 transitions. Word has length 22 [2021-11-25 19:00:57,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:00:57,491 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 83 transitions. [2021-11-25 19:00:57,492 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-25 19:00:57,492 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 83 transitions. [2021-11-25 19:00:57,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-25 19:00:57,498 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:00:57,498 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:00:57,511 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-25 19:00:57,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:00:57,711 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 24 more)] === [2021-11-25 19:00:57,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:00:57,712 INFO L85 PathProgramCache]: Analyzing trace with hash -125034979, now seen corresponding path program 1 times [2021-11-25 19:00:57,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:00:57,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [717604816] [2021-11-25 19:00:57,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:00:57,713 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:00:57,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:00:57,714 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:00:57,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-25 19:00:57,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:00:57,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-25 19:00:57,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:00:57,924 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 19:00:58,071 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-25 19:00:58,071 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:00:58,072 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:00:58,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [717604816] [2021-11-25 19:00:58,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [717604816] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:00:58,078 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:00:58,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:00:58,079 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802451875] [2021-11-25 19:00:58,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:00:58,080 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 19:00:58,081 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:00:58,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 19:00:58,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-25 19:00:58,086 INFO L87 Difference]: Start difference. First operand 76 states and 83 transitions. Second operand has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-25 19:00:58,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:00:58,423 INFO L93 Difference]: Finished difference Result 76 states and 84 transitions. [2021-11-25 19:00:58,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 19:00:58,424 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 22 [2021-11-25 19:00:58,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:00:58,425 INFO L225 Difference]: With dead ends: 76 [2021-11-25 19:00:58,425 INFO L226 Difference]: Without dead ends: 76 [2021-11-25 19:00:58,426 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-25 19:00:58,427 INFO L933 BasicCegarLoop]: 63 mSDtfsCounter, 69 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 19:00:58,427 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 236 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-25 19:00:58,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-11-25 19:00:58,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2021-11-25 19:00:58,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 50 states have (on average 1.56) internal successors, (78), 71 states have internal predecessors, (78), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-25 19:00:58,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 82 transitions. [2021-11-25 19:00:58,436 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 82 transitions. Word has length 22 [2021-11-25 19:00:58,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:00:58,437 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 82 transitions. [2021-11-25 19:00:58,437 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-25 19:00:58,437 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 82 transitions. [2021-11-25 19:00:58,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-25 19:00:58,438 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:00:58,439 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:00:58,451 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-11-25 19:00:58,651 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:00:58,651 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 24 more)] === [2021-11-25 19:00:58,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:00:58,652 INFO L85 PathProgramCache]: Analyzing trace with hash -1180454715, now seen corresponding path program 1 times [2021-11-25 19:00:58,652 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:00:58,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2142372338] [2021-11-25 19:00:58,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:00:58,653 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:00:58,653 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:00:58,654 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:00:58,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-25 19:00:58,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:00:58,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-25 19:00:58,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:00:58,827 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 19:00:59,112 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-25 19:00:59,112 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 30 [2021-11-25 19:00:59,160 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-25 19:00:59,160 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:00:59,603 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-25 19:00:59,604 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:00:59,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2142372338] [2021-11-25 19:00:59,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2142372338] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:00:59,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [247488383] [2021-11-25 19:00:59,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:00:59,605 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 19:00:59,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 19:00:59,609 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 19:00:59,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2021-11-25 19:00:59,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:00:59,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-25 19:00:59,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:00:59,846 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 19:01:04,103 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-25 19:01:04,103 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 22 [2021-11-25 19:01:04,203 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-25 19:01:04,204 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:01:04,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [247488383] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:01:04,204 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-25 19:01:04,204 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [7, 6] total 11 [2021-11-25 19:01:04,204 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674577331] [2021-11-25 19:01:04,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:01:04,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-25 19:01:04,205 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:01:04,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-25 19:01:04,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=102, Unknown=2, NotChecked=0, Total=132 [2021-11-25 19:01:04,206 INFO L87 Difference]: Start difference. First operand 75 states and 82 transitions. Second operand has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 7 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-25 19:01:04,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:01:04,401 INFO L93 Difference]: Finished difference Result 74 states and 81 transitions. [2021-11-25 19:01:04,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-25 19:01:04,402 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 7 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 25 [2021-11-25 19:01:04,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:01:04,403 INFO L225 Difference]: With dead ends: 74 [2021-11-25 19:01:04,403 INFO L226 Difference]: Without dead ends: 74 [2021-11-25 19:01:04,403 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 54 SyntacticMatches, 8 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=28, Invalid=102, Unknown=2, NotChecked=0, Total=132 [2021-11-25 19:01:04,404 INFO L933 BasicCegarLoop]: 69 mSDtfsCounter, 0 mSDsluCounter, 283 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 35 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:01:04,405 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 352 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 103 Invalid, 0 Unknown, 35 Unchecked, 0.2s Time] [2021-11-25 19:01:04,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-11-25 19:01:04,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2021-11-25 19:01:04,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 50 states have (on average 1.54) internal successors, (77), 70 states have internal predecessors, (77), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-25 19:01:04,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 81 transitions. [2021-11-25 19:01:04,416 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 81 transitions. Word has length 25 [2021-11-25 19:01:04,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:01:04,416 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 81 transitions. [2021-11-25 19:01:04,417 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 7 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-25 19:01:04,417 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 81 transitions. [2021-11-25 19:01:04,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-25 19:01:04,417 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:01:04,417 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:01:04,423 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2021-11-25 19:01:04,625 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-25 19:01:04,818 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:01:04,818 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 24 more)] === [2021-11-25 19:01:04,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:01:04,819 INFO L85 PathProgramCache]: Analyzing trace with hash -1180454714, now seen corresponding path program 1 times [2021-11-25 19:01:04,819 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:01:04,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1190605359] [2021-11-25 19:01:04,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:01:04,820 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:01:04,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:01:04,822 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:01:04,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-25 19:01:04,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:01:04,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-25 19:01:04,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:01:04,991 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 19:01:04,998 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 19:01:05,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:01:05,407 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2021-11-25 19:01:05,424 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-25 19:01:05,425 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 20 [2021-11-25 19:01:05,492 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:01:05,492 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:01:05,889 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:01:05,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1190605359] [2021-11-25 19:01:05,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1190605359] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:01:05,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [510097907] [2021-11-25 19:01:05,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:01:05,890 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 19:01:05,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 19:01:05,893 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 19:01:05,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2021-11-25 19:01:06,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:01:06,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-25 19:01:06,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:01:06,119 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 19:01:06,127 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 19:01:06,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:01:06,433 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2021-11-25 19:01:06,455 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-25 19:01:06,455 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 22 [2021-11-25 19:01:06,489 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:01:06,490 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:01:06,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [510097907] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:01:06,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [586990627] [2021-11-25 19:01:06,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:01:06,822 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:01:06,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:01:06,828 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:01:06,836 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-25 19:01:06,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:01:06,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-25 19:01:06,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:01:06,955 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 19:01:07,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:01:07,239 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2021-11-25 19:01:07,251 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-25 19:01:07,252 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 24 [2021-11-25 19:01:07,289 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:01:07,289 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:01:07,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [586990627] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:01:07,599 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 19:01:07,599 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 9] total 9 [2021-11-25 19:01:07,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343089850] [2021-11-25 19:01:07,600 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 19:01:07,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-25 19:01:07,600 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:01:07,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-25 19:01:07,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-25 19:01:07,601 INFO L87 Difference]: Start difference. First operand 74 states and 81 transitions. Second operand has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 8 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-25 19:01:08,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:01:08,172 INFO L93 Difference]: Finished difference Result 156 states and 171 transitions. [2021-11-25 19:01:08,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-25 19:01:08,173 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 8 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 25 [2021-11-25 19:01:08,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:01:08,175 INFO L225 Difference]: With dead ends: 156 [2021-11-25 19:01:08,175 INFO L226 Difference]: Without dead ends: 156 [2021-11-25 19:01:08,175 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 73 SyntacticMatches, 8 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-11-25 19:01:08,176 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 139 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 62 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 19:01:08,177 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [139 Valid, 343 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 176 Invalid, 0 Unknown, 62 Unchecked, 0.5s Time] [2021-11-25 19:01:08,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2021-11-25 19:01:08,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 80. [2021-11-25 19:01:08,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 55 states have (on average 1.509090909090909) internal successors, (83), 75 states have internal predecessors, (83), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-25 19:01:08,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 89 transitions. [2021-11-25 19:01:08,187 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 89 transitions. Word has length 25 [2021-11-25 19:01:08,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:01:08,188 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 89 transitions. [2021-11-25 19:01:08,188 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 8 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-25 19:01:08,188 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 89 transitions. [2021-11-25 19:01:08,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-25 19:01:08,190 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:01:08,190 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:01:08,231 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-25 19:01:08,420 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-25 19:01:08,616 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2021-11-25 19:01:08,812 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt [2021-11-25 19:01:08,812 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 24 more)] === [2021-11-25 19:01:08,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:01:08,812 INFO L85 PathProgramCache]: Analyzing trace with hash 2031866825, now seen corresponding path program 1 times [2021-11-25 19:01:08,813 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:01:08,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1340347840] [2021-11-25 19:01:08,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:01:08,813 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:01:08,813 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:01:08,815 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:01:08,869 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-25 19:01:08,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:01:08,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-25 19:01:08,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:01:09,063 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-25 19:01:09,063 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:01:09,063 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:01:09,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1340347840] [2021-11-25 19:01:09,064 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1340347840] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:01:09,064 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:01:09,064 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:01:09,065 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122402614] [2021-11-25 19:01:09,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:01:09,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:01:09,066 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:01:09,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:01:09,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:01:09,067 INFO L87 Difference]: Start difference. First operand 80 states and 89 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-25 19:01:09,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:01:09,135 INFO L93 Difference]: Finished difference Result 111 states and 122 transitions. [2021-11-25 19:01:09,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 19:01:09,137 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 30 [2021-11-25 19:01:09,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:01:09,138 INFO L225 Difference]: With dead ends: 111 [2021-11-25 19:01:09,138 INFO L226 Difference]: Without dead ends: 111 [2021-11-25 19:01:09,138 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-25 19:01:09,139 INFO L933 BasicCegarLoop]: 72 mSDtfsCounter, 124 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:01:09,140 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [124 Valid, 223 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 19:01:09,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-11-25 19:01:09,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 83. [2021-11-25 19:01:09,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 58 states have (on average 1.4827586206896552) internal successors, (86), 78 states have internal predecessors, (86), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-25 19:01:09,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 92 transitions. [2021-11-25 19:01:09,158 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 92 transitions. Word has length 30 [2021-11-25 19:01:09,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:01:09,161 INFO L470 AbstractCegarLoop]: Abstraction has 83 states and 92 transitions. [2021-11-25 19:01:09,161 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-25 19:01:09,162 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 92 transitions. [2021-11-25 19:01:09,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-25 19:01:09,163 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:01:09,163 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:01:09,183 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-25 19:01:09,376 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:01:09,376 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 24 more)] === [2021-11-25 19:01:09,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:01:09,377 INFO L85 PathProgramCache]: Analyzing trace with hash 2031866881, now seen corresponding path program 1 times [2021-11-25 19:01:09,377 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:01:09,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [196895795] [2021-11-25 19:01:09,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:01:09,379 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:01:09,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:01:09,380 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:01:09,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-25 19:01:09,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:01:09,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-25 19:01:09,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:01:09,568 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 19:01:09,821 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-25 19:01:09,822 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:01:09,822 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:01:09,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [196895795] [2021-11-25 19:01:09,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [196895795] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:01:09,822 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:01:09,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-25 19:01:09,823 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449992637] [2021-11-25 19:01:09,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:01:09,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-25 19:01:09,823 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:01:09,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-25 19:01:09,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-11-25 19:01:09,824 INFO L87 Difference]: Start difference. First operand 83 states and 92 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-25 19:01:10,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:01:10,710 INFO L93 Difference]: Finished difference Result 135 states and 149 transitions. [2021-11-25 19:01:10,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-25 19:01:10,711 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 30 [2021-11-25 19:01:10,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:01:10,712 INFO L225 Difference]: With dead ends: 135 [2021-11-25 19:01:10,713 INFO L226 Difference]: Without dead ends: 135 [2021-11-25 19:01:10,713 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2021-11-25 19:01:10,714 INFO L933 BasicCegarLoop]: 95 mSDtfsCounter, 315 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 430 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-25 19:01:10,714 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [315 Valid, 430 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-25 19:01:10,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2021-11-25 19:01:10,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 86. [2021-11-25 19:01:10,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 61 states have (on average 1.5081967213114753) internal successors, (92), 81 states have internal predecessors, (92), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-25 19:01:10,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 98 transitions. [2021-11-25 19:01:10,722 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 98 transitions. Word has length 30 [2021-11-25 19:01:10,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:01:10,722 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 98 transitions. [2021-11-25 19:01:10,722 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-25 19:01:10,723 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 98 transitions. [2021-11-25 19:01:10,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-25 19:01:10,724 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:01:10,736 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:01:10,746 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-25 19:01:10,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:01:10,943 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 24 more)] === [2021-11-25 19:01:10,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:01:10,944 INFO L85 PathProgramCache]: Analyzing trace with hash 2031866880, now seen corresponding path program 1 times [2021-11-25 19:01:10,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:01:10,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [483868278] [2021-11-25 19:01:10,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:01:10,944 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:01:10,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:01:10,945 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:01:10,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-25 19:01:11,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:01:11,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-25 19:01:11,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:01:11,119 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 19:01:11,248 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-25 19:01:11,249 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:01:11,249 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:01:11,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [483868278] [2021-11-25 19:01:11,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [483868278] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:01:11,249 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:01:11,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-25 19:01:11,249 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659928050] [2021-11-25 19:01:11,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:01:11,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-25 19:01:11,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:01:11,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-25 19:01:11,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-11-25 19:01:11,251 INFO L87 Difference]: Start difference. First operand 86 states and 98 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-25 19:01:11,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:01:11,977 INFO L93 Difference]: Finished difference Result 106 states and 116 transitions. [2021-11-25 19:01:11,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-25 19:01:11,978 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 30 [2021-11-25 19:01:11,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:01:11,979 INFO L225 Difference]: With dead ends: 106 [2021-11-25 19:01:11,979 INFO L226 Difference]: Without dead ends: 106 [2021-11-25 19:01:11,979 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2021-11-25 19:01:11,980 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 294 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 293 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 19:01:11,980 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [294 Valid, 293 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-25 19:01:11,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-11-25 19:01:11,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 86. [2021-11-25 19:01:11,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 61 states have (on average 1.4754098360655739) internal successors, (90), 81 states have internal predecessors, (90), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-25 19:01:11,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 96 transitions. [2021-11-25 19:01:11,985 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 96 transitions. Word has length 30 [2021-11-25 19:01:11,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:01:11,986 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 96 transitions. [2021-11-25 19:01:11,986 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-25 19:01:11,986 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 96 transitions. [2021-11-25 19:01:11,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-25 19:01:11,998 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:01:11,998 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:01:12,015 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-25 19:01:12,211 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:01:12,211 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 24 more)] === [2021-11-25 19:01:12,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:01:12,212 INFO L85 PathProgramCache]: Analyzing trace with hash -1922829059, now seen corresponding path program 1 times [2021-11-25 19:01:12,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:01:12,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [82187262] [2021-11-25 19:01:12,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:01:12,213 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:01:12,213 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:01:12,214 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:01:12,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-25 19:01:12,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:01:12,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 31 conjunts are in the unsatisfiable core [2021-11-25 19:01:12,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:01:12,434 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 19:01:12,574 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-25 19:01:12,574 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2021-11-25 19:01:12,642 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 19:01:12,760 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 19:01:12,760 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 31 [2021-11-25 19:01:12,976 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 18 [2021-11-25 19:01:13,042 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:01:13,043 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:01:13,274 INFO L354 Elim1Store]: treesize reduction 5, result has 66.7 percent of original size [2021-11-25 19:01:13,274 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 31 [2021-11-25 19:01:13,283 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_439 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_439) |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|) |c_ULTIMATE.start_sll_circular_create_~last~0#1.base|)) is different from false [2021-11-25 19:01:13,296 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_439 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_439) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.offset|) |c_ULTIMATE.start_sll_circular_create_~last~0#1.base|)) is different from false [2021-11-25 19:01:13,306 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:01:13,307 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 19 [2021-11-25 19:01:13,311 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-11-25 19:01:13,316 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2021-11-25 19:01:13,494 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:01:13,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [82187262] [2021-11-25 19:01:13,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [82187262] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:01:13,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1046280232] [2021-11-25 19:01:13,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:01:13,495 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 19:01:13,495 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 19:01:13,496 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 19:01:13,517 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2021-11-25 19:01:13,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:01:13,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 36 conjunts are in the unsatisfiable core [2021-11-25 19:01:13,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:01:13,754 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 19:01:14,076 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-25 19:01:14,076 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 31 [2021-11-25 19:01:14,265 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 19:01:14,507 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 19:01:14,508 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 38 [2021-11-25 19:01:14,878 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 24 [2021-11-25 19:01:15,083 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:01:15,083 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:01:15,251 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_484 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_484) |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|))))))))))))) is different from false [2021-11-25 19:01:15,268 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_484 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_484) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.offset|)))))))))) (_ bv1 1)))) is different from false [2021-11-25 19:01:15,278 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:01:15,279 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 31 [2021-11-25 19:01:15,282 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 46 [2021-11-25 19:01:15,288 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 19 [2021-11-25 19:01:24,663 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1046280232] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:01:24,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [119788953] [2021-11-25 19:01:24,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:01:24,664 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:01:24,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:01:24,676 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:01:24,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-25 19:01:24,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:01:24,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 29 conjunts are in the unsatisfiable core [2021-11-25 19:01:24,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:01:24,894 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-25 19:01:24,899 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 19 [2021-11-25 19:01:24,921 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 19:01:24,995 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 19:01:24,995 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 31 [2021-11-25 19:01:25,054 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 18 [2021-11-25 19:01:25,067 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:01:25,068 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:01:25,256 INFO L354 Elim1Store]: treesize reduction 5, result has 66.7 percent of original size [2021-11-25 19:01:25,257 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 31 [2021-11-25 19:01:25,272 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_528 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_528) |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|) |c_ULTIMATE.start_sll_circular_create_~last~0#1.base|)) is different from false [2021-11-25 19:01:25,288 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_528 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_528) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.offset|) |c_ULTIMATE.start_sll_circular_create_~last~0#1.base|)) is different from false [2021-11-25 19:01:25,299 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:01:25,299 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 19 [2021-11-25 19:01:25,302 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-11-25 19:01:25,307 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2021-11-25 19:01:25,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [119788953] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:01:25,491 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 19:01:25,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 30 [2021-11-25 19:01:25,492 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828496508] [2021-11-25 19:01:25,492 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 19:01:25,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-11-25 19:01:25,493 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:01:25,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-11-25 19:01:25,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=1372, Unknown=8, NotChecked=474, Total=1980 [2021-11-25 19:01:25,495 INFO L87 Difference]: Start difference. First operand 86 states and 96 transitions. Second operand has 31 states, 30 states have (on average 1.7) internal successors, (51), 27 states have internal predecessors, (51), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-25 19:01:27,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:01:27,843 INFO L93 Difference]: Finished difference Result 107 states and 120 transitions. [2021-11-25 19:01:27,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-25 19:01:27,844 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 1.7) internal successors, (51), 27 states have internal predecessors, (51), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 33 [2021-11-25 19:01:27,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:01:27,846 INFO L225 Difference]: With dead ends: 107 [2021-11-25 19:01:27,846 INFO L226 Difference]: Without dead ends: 107 [2021-11-25 19:01:27,848 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 84 SyntacticMatches, 12 SemanticMatches, 50 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 400 ImplicationChecksByTransitivity, 12.3s TimeCoverageRelationStatistics Valid=258, Invalid=1828, Unknown=8, NotChecked=558, Total=2652 [2021-11-25 19:01:27,849 INFO L933 BasicCegarLoop]: 62 mSDtfsCounter, 146 mSDsluCounter, 980 mSDsCounter, 0 mSdLazyCounter, 494 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 1042 SdHoareTripleChecker+Invalid, 579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 68 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:01:27,849 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [146 Valid, 1042 Invalid, 579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 494 Invalid, 0 Unknown, 68 Unchecked, 1.2s Time] [2021-11-25 19:01:27,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-11-25 19:01:27,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 95. [2021-11-25 19:01:27,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 70 states have (on average 1.457142857142857) internal successors, (102), 90 states have internal predecessors, (102), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-25 19:01:27,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 108 transitions. [2021-11-25 19:01:27,857 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 108 transitions. Word has length 33 [2021-11-25 19:01:27,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:01:27,858 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 108 transitions. [2021-11-25 19:01:27,858 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 1.7) internal successors, (51), 27 states have internal predecessors, (51), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-25 19:01:27,858 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 108 transitions. [2021-11-25 19:01:27,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-25 19:01:27,859 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:01:27,860 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:01:27,905 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-11-25 19:01:28,096 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-25 19:01:28,283 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (16)] Forceful destruction successful, exit code 0 [2021-11-25 19:01:28,477 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt [2021-11-25 19:01:28,477 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 24 more)] === [2021-11-25 19:01:28,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:01:28,478 INFO L85 PathProgramCache]: Analyzing trace with hash -1922829058, now seen corresponding path program 1 times [2021-11-25 19:01:28,478 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:01:28,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [324050492] [2021-11-25 19:01:28,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:01:28,479 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:01:28,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:01:28,480 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:01:28,494 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-25 19:01:28,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:01:28,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 44 conjunts are in the unsatisfiable core [2021-11-25 19:01:28,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:01:28,758 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 19:01:28,766 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 19:01:29,166 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 19:01:29,166 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2021-11-25 19:01:29,184 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-25 19:01:29,184 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 19 [2021-11-25 19:01:29,318 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 19:01:29,335 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 19:01:29,502 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 19:01:29,502 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 37 [2021-11-25 19:01:29,512 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2021-11-25 19:01:29,802 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-25 19:01:29,818 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-25 19:01:29,948 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:01:29,948 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:01:31,037 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_576 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_577 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_577) |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|) (_ bv8 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_576) |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|)))) (forall ((v_ArrVal_577 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_577) |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|))) (bvule (bvadd .cse0 (_ bv4 32)) (bvadd .cse0 (_ bv8 32)))))) is different from false [2021-11-25 19:01:31,091 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_576 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_577 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_577) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.offset|)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_576) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.offset|)))) (forall ((v_ArrVal_577 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_577) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.offset|))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0))))) is different from false [2021-11-25 19:01:31,115 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:01:31,116 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 30 [2021-11-25 19:01:31,119 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 32 [2021-11-25 19:01:31,132 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-11-25 19:01:31,163 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:01:31,164 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 38 [2021-11-25 19:01:31,182 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:01:31,182 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2021-11-25 19:01:31,187 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:01:31,193 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 19 [2021-11-25 19:01:31,199 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:01:31,203 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2021-11-25 19:01:31,925 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:01:31,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [324050492] [2021-11-25 19:01:31,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [324050492] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:01:31,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [922076744] [2021-11-25 19:01:31,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:01:31,925 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 19:01:31,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 19:01:31,926 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 19:01:31,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2021-11-25 19:01:32,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:01:32,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 48 conjunts are in the unsatisfiable core [2021-11-25 19:01:32,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:01:32,253 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 19:01:32,260 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 19:01:32,698 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 19:01:32,699 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2021-11-25 19:01:32,721 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-25 19:01:32,721 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 19 [2021-11-25 19:01:32,948 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 19:01:32,960 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 19:01:33,248 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 19:01:33,248 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 37 [2021-11-25 19:01:33,255 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2021-11-25 19:01:33,786 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-25 19:01:33,789 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-25 19:01:33,806 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:01:33,806 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:01:33,953 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_628 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_629 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_628) |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_629) |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|)))) (forall ((v_ArrVal_628 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_628) |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0))))) is different from false [2021-11-25 19:01:34,013 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_628 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_629 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_628) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.offset|)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_629) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.offset|)))) (forall ((v_ArrVal_628 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_628) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.offset|))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0))))) is different from false [2021-11-25 19:01:34,037 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:01:34,037 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 38 [2021-11-25 19:01:34,046 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:01:34,046 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2021-11-25 19:01:34,051 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 44 [2021-11-25 19:01:34,054 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 70 [2021-11-25 19:01:34,057 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 62 [2021-11-25 19:01:34,069 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 28 [2021-11-25 19:01:34,241 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:01:34,242 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 30 [2021-11-25 19:01:34,245 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 32 [2021-11-25 19:01:34,257 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-11-25 19:01:34,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [922076744] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:01:34,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [392715807] [2021-11-25 19:01:34,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:01:34,868 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:01:34,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:01:34,869 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:01:34,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-11-25 19:01:34,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:01:34,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 43 conjunts are in the unsatisfiable core [2021-11-25 19:01:34,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:01:35,001 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 19:01:35,305 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 19:01:35,305 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2021-11-25 19:01:35,328 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-25 19:01:35,329 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 18 [2021-11-25 19:01:35,365 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 19:01:35,373 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 19:01:35,440 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 19:01:35,440 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 37 [2021-11-25 19:01:35,445 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2021-11-25 19:01:35,509 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-25 19:01:35,514 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-25 19:01:35,539 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:01:35,539 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:01:35,684 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_679 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_679) |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|))) (bvule (bvadd .cse0 (_ bv4 32)) (bvadd .cse0 (_ bv8 32))))) (forall ((v_ArrVal_680 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_679 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_679) |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|) (_ bv8 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_680) |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|))))) is different from false [2021-11-25 19:01:35,730 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_679 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_679) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.offset|))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_680 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_679 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_679) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.offset|)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_680) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.offset|))))) is different from false [2021-11-25 19:01:35,757 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:01:35,757 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 38 [2021-11-25 19:01:35,769 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:01:35,769 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2021-11-25 19:01:35,775 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 44 [2021-11-25 19:01:35,779 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 70 [2021-11-25 19:01:35,783 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 62 [2021-11-25 19:01:35,794 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 28 [2021-11-25 19:01:35,947 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:01:35,947 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 30 [2021-11-25 19:01:35,950 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 32 [2021-11-25 19:01:35,957 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-11-25 19:01:36,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [392715807] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:01:36,461 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 19:01:36,462 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 19] total 29 [2021-11-25 19:01:36,462 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149312675] [2021-11-25 19:01:36,462 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 19:01:36,463 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-11-25 19:01:36,463 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:01:36,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-11-25 19:01:36,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=1382, Unknown=6, NotChecked=474, Total=1980 [2021-11-25 19:01:36,466 INFO L87 Difference]: Start difference. First operand 95 states and 108 transitions. Second operand has 30 states, 29 states have (on average 1.6551724137931034) internal successors, (48), 26 states have internal predecessors, (48), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-25 19:01:39,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:01:39,369 INFO L93 Difference]: Finished difference Result 206 states and 229 transitions. [2021-11-25 19:01:39,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-25 19:01:39,370 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 1.6551724137931034) internal successors, (48), 26 states have internal predecessors, (48), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 33 [2021-11-25 19:01:39,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:01:39,372 INFO L225 Difference]: With dead ends: 206 [2021-11-25 19:01:39,373 INFO L226 Difference]: Without dead ends: 206 [2021-11-25 19:01:39,374 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 88 SyntacticMatches, 8 SemanticMatches, 52 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 391 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=240, Invalid=2034, Unknown=6, NotChecked=582, Total=2862 [2021-11-25 19:01:39,375 INFO L933 BasicCegarLoop]: 95 mSDtfsCounter, 1173 mSDsluCounter, 1525 mSDsCounter, 0 mSdLazyCounter, 741 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1173 SdHoareTripleChecker+Valid, 1620 SdHoareTripleChecker+Invalid, 936 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 741 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 154 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-11-25 19:01:39,375 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1173 Valid, 1620 Invalid, 936 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 741 Invalid, 0 Unknown, 154 Unchecked, 1.8s Time] [2021-11-25 19:01:39,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2021-11-25 19:01:39,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 103. [2021-11-25 19:01:39,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 78 states have (on average 1.4487179487179487) internal successors, (113), 98 states have internal predecessors, (113), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-25 19:01:39,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 119 transitions. [2021-11-25 19:01:39,382 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 119 transitions. Word has length 33 [2021-11-25 19:01:39,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:01:39,382 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 119 transitions. [2021-11-25 19:01:39,383 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 1.6551724137931034) internal successors, (48), 26 states have internal predecessors, (48), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-25 19:01:39,383 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 119 transitions. [2021-11-25 19:01:39,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 19:01:39,384 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:01:39,385 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:01:39,397 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-25 19:01:39,594 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (19)] Forceful destruction successful, exit code 0 [2021-11-25 19:01:39,818 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-11-25 19:01:39,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:01:39,992 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 24 more)] === [2021-11-25 19:01:39,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:01:39,992 INFO L85 PathProgramCache]: Analyzing trace with hash -1020012727, now seen corresponding path program 2 times [2021-11-25 19:01:39,993 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:01:39,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [895583487] [2021-11-25 19:01:39,993 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-25 19:01:39,993 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:01:39,993 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:01:39,994 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:01:39,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-25 19:01:40,162 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-25 19:01:40,162 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:01:40,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-25 19:01:40,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:01:40,274 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-25 19:01:40,275 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:01:40,472 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-25 19:01:40,473 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:01:40,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [895583487] [2021-11-25 19:01:40,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [895583487] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:01:40,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [976413647] [2021-11-25 19:01:40,473 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-25 19:01:40,473 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 19:01:40,474 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 19:01:40,476 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 19:01:40,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2021-11-25 19:01:40,766 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-25 19:01:40,766 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:01:40,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-25 19:01:40,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:01:40,845 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-25 19:01:40,845 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:01:40,964 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-25 19:01:40,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [976413647] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:01:40,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [623564045] [2021-11-25 19:01:40,965 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-25 19:01:40,965 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:01:40,966 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:01:40,967 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:01:40,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-11-25 19:01:41,357 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-25 19:01:41,357 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:01:41,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-25 19:01:41,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:01:41,462 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-25 19:01:41,462 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:01:41,908 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-25 19:01:41,908 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [623564045] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:01:41,908 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-25 19:01:41,908 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 8] total 16 [2021-11-25 19:01:41,908 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361353219] [2021-11-25 19:01:41,908 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-25 19:01:41,909 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-25 19:01:41,909 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:01:41,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-25 19:01:41,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2021-11-25 19:01:41,911 INFO L87 Difference]: Start difference. First operand 103 states and 119 transitions. Second operand has 16 states, 16 states have (on average 3.6875) internal successors, (59), 16 states have internal predecessors, (59), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2021-11-25 19:01:43,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:01:43,119 INFO L93 Difference]: Finished difference Result 468 states and 523 transitions. [2021-11-25 19:01:43,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-25 19:01:43,120 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.6875) internal successors, (59), 16 states have internal predecessors, (59), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 36 [2021-11-25 19:01:43,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:01:43,123 INFO L225 Difference]: With dead ends: 468 [2021-11-25 19:01:43,123 INFO L226 Difference]: Without dead ends: 468 [2021-11-25 19:01:43,124 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 288 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=373, Invalid=1109, Unknown=0, NotChecked=0, Total=1482 [2021-11-25 19:01:43,125 INFO L933 BasicCegarLoop]: 73 mSDtfsCounter, 1950 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1950 SdHoareTripleChecker+Valid, 544 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 19:01:43,126 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1950 Valid, 544 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-25 19:01:43,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2021-11-25 19:01:43,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 144. [2021-11-25 19:01:43,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 119 states have (on average 1.4369747899159664) internal successors, (171), 139 states have internal predecessors, (171), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-25 19:01:43,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 177 transitions. [2021-11-25 19:01:43,136 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 177 transitions. Word has length 36 [2021-11-25 19:01:43,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:01:43,137 INFO L470 AbstractCegarLoop]: Abstraction has 144 states and 177 transitions. [2021-11-25 19:01:43,137 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.6875) internal successors, (59), 16 states have internal predecessors, (59), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2021-11-25 19:01:43,138 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 177 transitions. [2021-11-25 19:01:43,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-25 19:01:43,139 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:01:43,139 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:01:43,145 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (22)] Forceful destruction successful, exit code 0 [2021-11-25 19:01:43,370 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-11-25 19:01:43,552 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (21)] Ended with exit code 0 [2021-11-25 19:01:43,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:01:43,743 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 24 more)] === [2021-11-25 19:01:43,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:01:43,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1813078092, now seen corresponding path program 2 times [2021-11-25 19:01:43,744 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:01:43,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [108646208] [2021-11-25 19:01:43,744 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-25 19:01:43,745 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:01:43,745 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:01:43,746 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:01:43,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-11-25 19:01:43,922 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-25 19:01:43,922 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:01:43,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-25 19:01:43,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:01:44,003 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 20 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-25 19:01:44,003 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:01:44,096 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-25 19:01:44,097 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:01:44,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [108646208] [2021-11-25 19:01:44,097 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [108646208] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:01:44,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [855967153] [2021-11-25 19:01:44,098 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-25 19:01:44,098 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 19:01:44,098 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 19:01:44,100 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 19:01:44,101 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2021-11-25 19:01:44,389 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-25 19:01:44,389 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:01:44,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-25 19:01:44,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:01:44,490 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 20 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-25 19:01:44,490 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:01:44,585 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-25 19:01:44,585 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [855967153] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:01:44,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1750871772] [2021-11-25 19:01:44,585 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-25 19:01:44,585 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:01:44,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:01:44,586 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:01:44,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-11-25 19:01:44,791 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-25 19:01:44,792 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:01:44,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-25 19:01:44,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:01:44,861 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 20 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-25 19:01:44,861 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:01:44,936 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-25 19:01:44,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1750871772] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:01:44,937 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-25 19:01:44,937 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4, 4] total 6 [2021-11-25 19:01:44,937 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858687954] [2021-11-25 19:01:44,937 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-25 19:01:44,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 19:01:44,938 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:01:44,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 19:01:44,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-25 19:01:44,939 INFO L87 Difference]: Start difference. First operand 144 states and 177 transitions. Second operand has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2021-11-25 19:01:44,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:01:44,966 INFO L93 Difference]: Finished difference Result 112 states and 131 transitions. [2021-11-25 19:01:44,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 19:01:44,967 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 37 [2021-11-25 19:01:44,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:01:44,968 INFO L225 Difference]: With dead ends: 112 [2021-11-25 19:01:44,968 INFO L226 Difference]: Without dead ends: 112 [2021-11-25 19:01:44,979 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-25 19:01:44,980 INFO L933 BasicCegarLoop]: 76 mSDtfsCounter, 124 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:01:44,980 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [124 Valid, 158 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 19:01:44,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2021-11-25 19:01:44,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2021-11-25 19:01:44,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 89 states have (on average 1.4269662921348314) internal successors, (127), 108 states have internal predecessors, (127), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-25 19:01:44,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 131 transitions. [2021-11-25 19:01:44,986 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 131 transitions. Word has length 37 [2021-11-25 19:01:44,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:01:44,986 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 131 transitions. [2021-11-25 19:01:44,987 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2021-11-25 19:01:44,987 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 131 transitions. [2021-11-25 19:01:44,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-25 19:01:44,991 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:01:44,991 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:01:45,007 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-11-25 19:01:45,210 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (25)] Forceful destruction successful, exit code 0 [2021-11-25 19:01:45,434 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2021-11-25 19:01:45,607 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:01:45,608 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 24 more)] === [2021-11-25 19:01:45,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:01:45,608 INFO L85 PathProgramCache]: Analyzing trace with hash 999795886, now seen corresponding path program 1 times [2021-11-25 19:01:45,609 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:01:45,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1125079076] [2021-11-25 19:01:45,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:01:45,609 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:01:45,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:01:45,612 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:01:45,613 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-11-25 19:01:45,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:01:45,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-25 19:01:45,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:01:45,919 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-25 19:01:45,920 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:01:46,053 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-25 19:01:46,053 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:01:46,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1125079076] [2021-11-25 19:01:46,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1125079076] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:01:46,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1864141016] [2021-11-25 19:01:46,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:01:46,054 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 19:01:46,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 19:01:46,055 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 19:01:46,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (28)] Waiting until timeout for monitored process [2021-11-25 19:01:46,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:01:46,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-25 19:01:46,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:01:46,417 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-25 19:01:46,417 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:01:46,531 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-25 19:01:46,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1864141016] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:01:46,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1057964528] [2021-11-25 19:01:46,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:01:46,532 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:01:46,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:01:46,548 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:01:46,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-11-25 19:01:46,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:01:46,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-25 19:01:46,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:01:47,208 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-25 19:01:47,208 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:01:47,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1057964528] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:01:47,209 INFO L186 FreeRefinementEngine]: Found 1 perfect and 4 imperfect interpolant sequences. [2021-11-25 19:01:47,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [5, 5, 5, 5] total 16 [2021-11-25 19:01:47,210 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351474188] [2021-11-25 19:01:47,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:01:47,211 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-25 19:01:47,211 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:01:47,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-25 19:01:47,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2021-11-25 19:01:47,212 INFO L87 Difference]: Start difference. First operand 112 states and 131 transitions. Second operand has 10 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-25 19:01:47,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:01:47,835 INFO L93 Difference]: Finished difference Result 137 states and 157 transitions. [2021-11-25 19:01:47,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-25 19:01:47,835 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 40 [2021-11-25 19:01:47,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:01:47,836 INFO L225 Difference]: With dead ends: 137 [2021-11-25 19:01:47,837 INFO L226 Difference]: Without dead ends: 137 [2021-11-25 19:01:47,837 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 171 SyntacticMatches, 10 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=65, Invalid=355, Unknown=0, NotChecked=0, Total=420 [2021-11-25 19:01:47,838 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 286 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 19:01:47,838 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [286 Valid, 274 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 19:01:47,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-11-25 19:01:47,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 115. [2021-11-25 19:01:47,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 92 states have (on average 1.4456521739130435) internal successors, (133), 111 states have internal predecessors, (133), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-25 19:01:47,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 137 transitions. [2021-11-25 19:01:47,845 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 137 transitions. Word has length 40 [2021-11-25 19:01:47,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:01:47,845 INFO L470 AbstractCegarLoop]: Abstraction has 115 states and 137 transitions. [2021-11-25 19:01:47,846 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-25 19:01:47,846 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 137 transitions. [2021-11-25 19:01:47,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-25 19:01:47,847 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:01:47,847 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:01:47,868 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (28)] Ended with exit code 0 [2021-11-25 19:01:48,060 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (27)] Ended with exit code 0 [2021-11-25 19:01:48,276 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2021-11-25 19:01:48,451 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:01:48,451 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 24 more)] === [2021-11-25 19:01:48,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:01:48,452 INFO L85 PathProgramCache]: Analyzing trace with hash 999795887, now seen corresponding path program 1 times [2021-11-25 19:01:48,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:01:48,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1081586284] [2021-11-25 19:01:48,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:01:48,452 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:01:48,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:01:48,453 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:01:48,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-11-25 19:01:48,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:01:48,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-25 19:01:48,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:01:48,775 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-25 19:01:48,775 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:01:48,918 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-25 19:01:48,918 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:01:48,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1081586284] [2021-11-25 19:01:48,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1081586284] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:01:48,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [30751055] [2021-11-25 19:01:48,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:01:48,919 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 19:01:48,919 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 19:01:48,920 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 19:01:48,921 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (31)] Waiting until timeout for monitored process [2021-11-25 19:01:49,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:01:49,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-25 19:01:49,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:01:49,359 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-25 19:01:49,360 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:01:49,461 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-25 19:01:49,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [30751055] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:01:49,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1082668813] [2021-11-25 19:01:49,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:01:49,461 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:01:49,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:01:49,462 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:01:49,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2021-11-25 19:01:49,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:01:49,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-25 19:01:49,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:01:49,699 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-25 19:01:49,699 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:01:49,903 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-25 19:01:49,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1082668813] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:01:49,903 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-25 19:01:49,904 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 6] total 10 [2021-11-25 19:01:49,904 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366564046] [2021-11-25 19:01:49,904 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-25 19:01:49,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-25 19:01:49,905 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:01:49,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-25 19:01:49,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-25 19:01:49,906 INFO L87 Difference]: Start difference. First operand 115 states and 137 transitions. Second operand has 10 states, 10 states have (on average 6.0) internal successors, (60), 10 states have internal predecessors, (60), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2021-11-25 19:01:50,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:01:50,056 INFO L93 Difference]: Finished difference Result 186 states and 221 transitions. [2021-11-25 19:01:50,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-25 19:01:50,056 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.0) internal successors, (60), 10 states have internal predecessors, (60), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 40 [2021-11-25 19:01:50,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:01:50,058 INFO L225 Difference]: With dead ends: 186 [2021-11-25 19:01:50,058 INFO L226 Difference]: Without dead ends: 186 [2021-11-25 19:01:50,059 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2021-11-25 19:01:50,060 INFO L933 BasicCegarLoop]: 92 mSDtfsCounter, 418 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 418 SdHoareTripleChecker+Valid, 430 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:01:50,060 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [418 Valid, 430 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:01:50,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2021-11-25 19:01:50,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 163. [2021-11-25 19:01:50,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 140 states have (on average 1.5285714285714285) internal successors, (214), 159 states have internal predecessors, (214), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-25 19:01:50,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 218 transitions. [2021-11-25 19:01:50,068 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 218 transitions. Word has length 40 [2021-11-25 19:01:50,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:01:50,069 INFO L470 AbstractCegarLoop]: Abstraction has 163 states and 218 transitions. [2021-11-25 19:01:50,069 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.0) internal successors, (60), 10 states have internal predecessors, (60), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2021-11-25 19:01:50,069 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 218 transitions. [2021-11-25 19:01:50,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-25 19:01:50,070 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:01:50,070 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:01:50,081 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2021-11-25 19:01:50,305 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2021-11-25 19:01:50,478 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (31)] Forceful destruction successful, exit code 0 [2021-11-25 19:01:50,676 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt [2021-11-25 19:01:50,676 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 24 more)] === [2021-11-25 19:01:50,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:01:50,677 INFO L85 PathProgramCache]: Analyzing trace with hash 968760597, now seen corresponding path program 1 times [2021-11-25 19:01:50,677 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:01:50,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [124293218] [2021-11-25 19:01:50,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:01:50,677 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:01:50,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:01:50,678 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:01:50,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2021-11-25 19:01:50,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:01:50,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-25 19:01:50,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:01:50,997 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-25 19:01:50,998 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:01:51,191 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-25 19:01:51,192 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:01:51,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [124293218] [2021-11-25 19:01:51,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [124293218] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:01:51,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1487775996] [2021-11-25 19:01:51,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:01:51,192 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 19:01:51,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 19:01:51,193 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 19:01:51,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (34)] Waiting until timeout for monitored process [2021-11-25 19:01:51,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:01:51,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-25 19:01:51,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:01:51,670 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-25 19:01:51,671 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:01:51,782 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-25 19:01:51,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1487775996] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:01:51,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1268913040] [2021-11-25 19:01:51,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:01:51,782 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:01:51,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:01:51,783 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:01:51,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2021-11-25 19:01:51,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:01:51,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-25 19:01:51,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:01:52,066 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-25 19:01:52,066 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:01:52,518 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-25 19:01:52,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1268913040] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:01:52,518 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-25 19:01:52,518 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 8] total 16 [2021-11-25 19:01:52,518 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481122905] [2021-11-25 19:01:52,518 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-25 19:01:52,519 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-25 19:01:52,519 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:01:52,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-25 19:01:52,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2021-11-25 19:01:52,520 INFO L87 Difference]: Start difference. First operand 163 states and 218 transitions. Second operand has 16 states, 16 states have (on average 4.625) internal successors, (74), 16 states have internal predecessors, (74), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2021-11-25 19:01:52,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:01:52,750 INFO L93 Difference]: Finished difference Result 132 states and 164 transitions. [2021-11-25 19:01:52,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-25 19:01:52,751 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.625) internal successors, (74), 16 states have internal predecessors, (74), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 41 [2021-11-25 19:01:52,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:01:52,752 INFO L225 Difference]: With dead ends: 132 [2021-11-25 19:01:52,752 INFO L226 Difference]: Without dead ends: 132 [2021-11-25 19:01:52,752 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=126, Invalid=380, Unknown=0, NotChecked=0, Total=506 [2021-11-25 19:01:52,753 INFO L933 BasicCegarLoop]: 81 mSDtfsCounter, 340 mSDsluCounter, 365 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:01:52,754 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [340 Valid, 446 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:01:52,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-11-25 19:01:52,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 126. [2021-11-25 19:01:52,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 107 states have (on average 1.485981308411215) internal successors, (159), 122 states have internal predecessors, (159), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-25 19:01:52,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 163 transitions. [2021-11-25 19:01:52,760 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 163 transitions. Word has length 41 [2021-11-25 19:01:52,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:01:52,760 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 163 transitions. [2021-11-25 19:01:52,761 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.625) internal successors, (74), 16 states have internal predecessors, (74), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2021-11-25 19:01:52,761 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 163 transitions. [2021-11-25 19:01:52,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-25 19:01:52,762 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:01:52,762 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:01:52,784 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2021-11-25 19:01:53,005 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2021-11-25 19:01:53,181 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (34)] Forceful destruction successful, exit code 0 [2021-11-25 19:01:53,378 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt [2021-11-25 19:01:53,378 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 24 more)] === [2021-11-25 19:01:53,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:01:53,379 INFO L85 PathProgramCache]: Analyzing trace with hash 884092027, now seen corresponding path program 2 times [2021-11-25 19:01:53,379 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:01:53,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1746711080] [2021-11-25 19:01:53,380 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-25 19:01:53,380 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:01:53,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:01:53,381 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:01:53,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2021-11-25 19:01:53,543 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-25 19:01:53,543 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:01:53,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-25 19:01:53,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:01:53,582 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 19:01:53,906 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-25 19:01:53,907 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:01:53,907 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:01:53,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1746711080] [2021-11-25 19:01:53,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1746711080] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:01:53,907 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:01:53,907 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-25 19:01:53,907 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930824147] [2021-11-25 19:01:53,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:01:53,908 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-25 19:01:53,908 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:01:53,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-25 19:01:53,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-11-25 19:01:53,908 INFO L87 Difference]: Start difference. First operand 126 states and 163 transitions. Second operand has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-25 19:01:54,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:01:54,524 INFO L93 Difference]: Finished difference Result 178 states and 213 transitions. [2021-11-25 19:01:54,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-25 19:01:54,525 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 45 [2021-11-25 19:01:54,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:01:54,526 INFO L225 Difference]: With dead ends: 178 [2021-11-25 19:01:54,526 INFO L226 Difference]: Without dead ends: 178 [2021-11-25 19:01:54,527 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2021-11-25 19:01:54,527 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 409 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 409 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 19:01:54,528 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [409 Valid, 259 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 19:01:54,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2021-11-25 19:01:54,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 126. [2021-11-25 19:01:54,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 107 states have (on average 1.411214953271028) internal successors, (151), 122 states have internal predecessors, (151), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-25 19:01:54,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 155 transitions. [2021-11-25 19:01:54,536 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 155 transitions. Word has length 45 [2021-11-25 19:01:54,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:01:54,536 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 155 transitions. [2021-11-25 19:01:54,536 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-25 19:01:54,537 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 155 transitions. [2021-11-25 19:01:54,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-25 19:01:54,538 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:01:54,538 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:01:54,553 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2021-11-25 19:01:54,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:01:54,747 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 24 more)] === [2021-11-25 19:01:54,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:01:54,748 INFO L85 PathProgramCache]: Analyzing trace with hash 1246140989, now seen corresponding path program 1 times [2021-11-25 19:01:54,748 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:01:54,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2010297548] [2021-11-25 19:01:54,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:01:54,748 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:01:54,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:01:54,749 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:01:54,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2021-11-25 19:01:54,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:01:54,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-25 19:01:54,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:01:55,111 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-25 19:01:55,112 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:01:55,304 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-25 19:01:55,304 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:01:55,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2010297548] [2021-11-25 19:01:55,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2010297548] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:01:55,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2144968158] [2021-11-25 19:01:55,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:01:55,305 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 19:01:55,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 19:01:55,306 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 19:01:55,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (38)] Waiting until timeout for monitored process [2021-11-25 19:01:55,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:01:55,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-25 19:01:55,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:01:55,852 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-25 19:01:55,852 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:01:56,038 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-25 19:01:56,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2144968158] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:01:56,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1052624160] [2021-11-25 19:01:56,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:01:56,039 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:01:56,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:01:56,041 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:01:56,069 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2021-11-25 19:01:56,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:01:56,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-25 19:01:56,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:01:56,359 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-25 19:01:56,359 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:01:56,504 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-25 19:01:56,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1052624160] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:01:56,504 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-25 19:01:56,505 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 6] total 10 [2021-11-25 19:01:56,505 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792030340] [2021-11-25 19:01:56,505 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-25 19:01:56,505 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-25 19:01:56,506 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:01:56,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-25 19:01:56,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-11-25 19:01:56,507 INFO L87 Difference]: Start difference. First operand 126 states and 155 transitions. Second operand has 10 states, 10 states have (on average 5.8) internal successors, (58), 10 states have internal predecessors, (58), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-25 19:01:56,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:01:56,795 INFO L93 Difference]: Finished difference Result 190 states and 209 transitions. [2021-11-25 19:01:56,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-25 19:01:56,804 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.8) internal successors, (58), 10 states have internal predecessors, (58), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 48 [2021-11-25 19:01:56,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:01:56,806 INFO L225 Difference]: With dead ends: 190 [2021-11-25 19:01:56,806 INFO L226 Difference]: Without dead ends: 190 [2021-11-25 19:01:56,807 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 274 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=125, Invalid=295, Unknown=0, NotChecked=0, Total=420 [2021-11-25 19:01:56,808 INFO L933 BasicCegarLoop]: 94 mSDtfsCounter, 311 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:01:56,808 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [311 Valid, 417 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:01:56,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2021-11-25 19:01:56,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 123. [2021-11-25 19:01:56,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 104 states have (on average 1.3557692307692308) internal successors, (141), 119 states have internal predecessors, (141), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-25 19:01:56,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 145 transitions. [2021-11-25 19:01:56,815 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 145 transitions. Word has length 48 [2021-11-25 19:01:56,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:01:56,815 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 145 transitions. [2021-11-25 19:01:56,816 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.8) internal successors, (58), 10 states have internal predecessors, (58), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-25 19:01:56,816 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 145 transitions. [2021-11-25 19:01:56,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-25 19:01:56,817 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:01:56,817 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:01:56,833 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2021-11-25 19:01:57,058 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2021-11-25 19:01:57,237 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (38)] Forceful destruction successful, exit code 0 [2021-11-25 19:01:57,433 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3,39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt [2021-11-25 19:01:57,433 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 24 more)] === [2021-11-25 19:01:57,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:01:57,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1246140934, now seen corresponding path program 1 times [2021-11-25 19:01:57,434 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:01:57,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1923637053] [2021-11-25 19:01:57,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:01:57,434 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:01:57,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:01:57,435 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:01:57,438 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2021-11-25 19:01:57,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:01:57,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 47 conjunts are in the unsatisfiable core [2021-11-25 19:01:57,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:01:57,795 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 19:01:57,941 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-25 19:01:57,941 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 22 [2021-11-25 19:01:58,049 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 19:01:58,213 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 19:01:58,214 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 32 [2021-11-25 19:01:58,757 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 19:01:58,758 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 32 [2021-11-25 19:01:58,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:01:58,855 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 29 [2021-11-25 19:01:58,969 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2021-11-25 19:01:59,045 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 19:01:59,046 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:02:01,450 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1645 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_update_at_~head#1.base| v_ArrVal_1645) |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|)))))))))) (_ bv1 1)))) is different from false [2021-11-25 19:02:01,599 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1645 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_update_at_~head#1.base|) |c_ULTIMATE.start_sll_circular_update_at_~head#1.offset|) v_ArrVal_1645) |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|))))))))))))))) (_ bv1 1)))) is different from false [2021-11-25 19:02:01,618 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1645 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|) v_ArrVal_1645) |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|)))))))))))))))) (_ bv1 1)))) is different from false [2021-11-25 19:02:01,631 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1645 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_create_#res#1.base|) |c_ULTIMATE.start_sll_circular_create_#res#1.offset|) v_ArrVal_1645) |c_ULTIMATE.start_sll_circular_create_#res#1.base|) |c_ULTIMATE.start_sll_circular_create_#res#1.offset|))))))))))))))))) (_ bv1 1)))) is different from false [2021-11-25 19:02:01,644 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1645 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|) v_ArrVal_1645) |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|))))))))))))))))))))) (_ bv1 1)) (_ bv0 1))) is different from false [2021-11-25 19:02:01,676 INFO L354 Elim1Store]: treesize reduction 5, result has 80.0 percent of original size [2021-11-25 19:02:01,676 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 54 [2021-11-25 19:02:01,687 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1644 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1645 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_1644))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|) v_ArrVal_1645)) |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|) |c_ULTIMATE.start_sll_circular_create_~last~0#1.base|)) is different from false [2021-11-25 19:02:01,705 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1644 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1645 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_1644))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.offset|) v_ArrVal_1645)) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.offset|) |c_ULTIMATE.start_sll_circular_create_~last~0#1.base|)) is different from false [2021-11-25 19:02:01,717 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:02:01,717 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 29 [2021-11-25 19:02:01,727 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 236 treesize of output 200 [2021-11-25 19:02:01,736 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 196 treesize of output 180 [2021-11-25 19:02:01,740 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 180 treesize of output 172 [2021-11-25 19:02:02,335 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:02:02,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1923637053] [2021-11-25 19:02:02,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1923637053] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:02:02,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [103241724] [2021-11-25 19:02:02,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:02:02,336 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 19:02:02,336 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 19:02:02,337 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 19:02:02,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (41)] Waiting until timeout for monitored process [2021-11-25 19:02:02,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:02:02,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 50 conjunts are in the unsatisfiable core [2021-11-25 19:02:02,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:02:02,841 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 19:02:03,297 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-25 19:02:03,298 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 33 [2021-11-25 19:02:03,558 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 19:02:03,881 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 19:02:03,882 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 41 [2021-11-25 19:02:05,169 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 19:02:05,169 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 46 [2021-11-25 19:02:05,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:02:05,442 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 45 [2021-11-25 19:02:05,773 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 29 [2021-11-25 19:02:06,131 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 19:02:06,131 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:02:11,023 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1704 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1645 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_1704))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|) v_ArrVal_1645)) |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|))))))))))))))))))))))))) is different from false [2021-11-25 19:02:11,056 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1704 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1645 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_1704))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.offset|) v_ArrVal_1645)) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.offset|))))))))))))))))))))))) (_ bv1 1)))) is different from false [2021-11-25 19:02:11,074 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:02:11,074 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 55 [2021-11-25 19:02:11,080 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 444 treesize of output 408 [2021-11-25 19:02:11,090 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 404 treesize of output 396 [2021-11-25 19:02:11,097 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 396 treesize of output 380 [2021-11-25 19:02:25,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [103241724] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:02:25,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2053530007] [2021-11-25 19:02:25,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:02:25,069 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:02:25,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:02:25,070 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:02:25,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2021-11-25 19:02:25,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:02:25,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 42 conjunts are in the unsatisfiable core [2021-11-25 19:02:25,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:02:25,569 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-25 19:02:25,569 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 20 [2021-11-25 19:02:25,699 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 19:02:26,002 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 19:02:26,002 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 32 [2021-11-25 19:02:27,058 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 19:02:27,058 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 32 [2021-11-25 19:02:27,159 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-11-25 19:02:27,159 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 30 [2021-11-25 19:02:28,599 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-11-25 19:02:28,717 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 19:02:28,717 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:02:31,166 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1764 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_update_at_~head#1.base| v_ArrVal_1764) |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|))))))))))) (_ bv1 1)))) is different from false [2021-11-25 19:02:31,334 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1645 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_update_at_~head#1.base|) |c_ULTIMATE.start_sll_circular_update_at_~head#1.offset|) v_ArrVal_1645) |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|))))))))))))) (_ bv1 1)))) is different from false [2021-11-25 19:02:31,370 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1645 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|) v_ArrVal_1645) |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|)))))))))))))) (_ bv1 1)))) is different from false [2021-11-25 19:02:31,388 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1645 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_create_#res#1.base|) |c_ULTIMATE.start_sll_circular_create_#res#1.offset|) v_ArrVal_1645) |c_ULTIMATE.start_sll_circular_create_#res#1.base|) |c_ULTIMATE.start_sll_circular_create_#res#1.offset|)))))))))))))) (_ bv1 1)))) is different from false [2021-11-25 19:02:31,408 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1645 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|) v_ArrVal_1645) |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|)))))))))))))) (_ bv1 1)))) is different from false [2021-11-25 19:02:31,440 INFO L354 Elim1Store]: treesize reduction 5, result has 80.0 percent of original size [2021-11-25 19:02:31,441 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 45 [2021-11-25 19:02:31,456 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1763 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1645 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_1763))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|) v_ArrVal_1645)) |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|) |c_ULTIMATE.start_sll_circular_create_~last~0#1.base|)) is different from false [2021-11-25 19:02:31,481 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1763 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1645 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_1763))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.offset|) v_ArrVal_1645)) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.offset|) |c_ULTIMATE.start_sll_circular_create_~last~0#1.base|)) is different from false [2021-11-25 19:02:31,498 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:02:31,499 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 29 [2021-11-25 19:02:31,504 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 236 treesize of output 200 [2021-11-25 19:02:31,513 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 196 treesize of output 180 [2021-11-25 19:02:31,519 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 180 treesize of output 172 [2021-11-25 19:02:32,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2053530007] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:02:32,067 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 19:02:32,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 49 [2021-11-25 19:02:32,068 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059813595] [2021-11-25 19:02:32,068 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 19:02:32,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2021-11-25 19:02:32,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:02:32,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2021-11-25 19:02:32,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=3203, Unknown=30, NotChecked=2064, Total=5550 [2021-11-25 19:02:32,072 INFO L87 Difference]: Start difference. First operand 123 states and 145 transitions. Second operand has 50 states, 49 states have (on average 2.1020408163265305) internal successors, (103), 45 states have internal predecessors, (103), 2 states have call successors, (2), 2 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-25 19:02:36,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:02:36,365 INFO L93 Difference]: Finished difference Result 196 states and 225 transitions. [2021-11-25 19:02:36,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-25 19:02:36,365 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 49 states have (on average 2.1020408163265305) internal successors, (103), 45 states have internal predecessors, (103), 2 states have call successors, (2), 2 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) Word has length 48 [2021-11-25 19:02:36,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:02:36,367 INFO L225 Difference]: With dead ends: 196 [2021-11-25 19:02:36,367 INFO L226 Difference]: Without dead ends: 196 [2021-11-25 19:02:36,370 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 133 SyntacticMatches, 24 SemanticMatches, 83 ConstructedPredicates, 16 IntricatePredicates, 0 DeprecatedPredicates, 1664 ImplicationChecksByTransitivity, 29.1s TimeCoverageRelationStatistics Valid=447, Invalid=4279, Unknown=30, NotChecked=2384, Total=7140 [2021-11-25 19:02:36,371 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 579 mSDsluCounter, 1229 mSDsCounter, 0 mSdLazyCounter, 951 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 579 SdHoareTripleChecker+Valid, 1279 SdHoareTripleChecker+Invalid, 1048 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 951 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 63 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-11-25 19:02:36,372 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [579 Valid, 1279 Invalid, 1048 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 951 Invalid, 0 Unknown, 63 Unchecked, 2.5s Time] [2021-11-25 19:02:36,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2021-11-25 19:02:36,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 131. [2021-11-25 19:02:36,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 112 states have (on average 1.3660714285714286) internal successors, (153), 127 states have internal predecessors, (153), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-25 19:02:36,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 157 transitions. [2021-11-25 19:02:36,379 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 157 transitions. Word has length 48 [2021-11-25 19:02:36,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:02:36,379 INFO L470 AbstractCegarLoop]: Abstraction has 131 states and 157 transitions. [2021-11-25 19:02:36,380 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 49 states have (on average 2.1020408163265305) internal successors, (103), 45 states have internal predecessors, (103), 2 states have call successors, (2), 2 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-25 19:02:36,380 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 157 transitions. [2021-11-25 19:02:36,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-25 19:02:36,381 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:02:36,381 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:02:36,391 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (41)] Forceful destruction successful, exit code 0 [2021-11-25 19:02:36,596 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2021-11-25 19:02:36,811 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2021-11-25 19:02:36,986 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt,40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3,42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:02:36,986 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 24 more)] === [2021-11-25 19:02:36,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:02:36,986 INFO L85 PathProgramCache]: Analyzing trace with hash 1246140935, now seen corresponding path program 1 times [2021-11-25 19:02:36,987 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:02:36,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1802352685] [2021-11-25 19:02:36,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:02:36,987 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:02:36,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:02:36,989 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:02:36,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2021-11-25 19:02:37,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:02:37,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 64 conjunts are in the unsatisfiable core [2021-11-25 19:02:37,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:02:37,471 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 19:02:37,486 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 19:02:37,973 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-25 19:02:37,973 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2021-11-25 19:02:37,987 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2021-11-25 19:02:38,156 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 19:02:38,172 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 19:02:38,377 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 19:02:38,377 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 37 [2021-11-25 19:02:38,384 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2021-11-25 19:02:39,102 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 19:02:39,103 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 37 [2021-11-25 19:02:39,108 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2021-11-25 19:02:39,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:02:39,240 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-25 19:02:39,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:02:39,253 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 26 [2021-11-25 19:02:39,461 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-25 19:02:39,466 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-25 19:02:39,628 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 19:02:39,628 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:02:41,625 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1828 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_circular_update_at_~head#1.base| v_ArrVal_1828) |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_1828 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1829 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_circular_update_at_~head#1.base| v_ArrVal_1828) |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_update_at_~head#1.base| v_ArrVal_1829) |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|))))) is different from false [2021-11-25 19:02:41,687 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1828 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1829 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_circular_update_at_#t~mem12#1.base| v_ArrVal_1828) |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_update_at_#t~mem12#1.base| v_ArrVal_1829) |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|)))) (forall ((v_ArrVal_1828 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_circular_update_at_#t~mem12#1.base| v_ArrVal_1828) |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0))))) is different from false [2021-11-25 19:02:41,740 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1828 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1829 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_update_at_~head#1.base|) |c_ULTIMATE.start_sll_circular_update_at_~head#1.offset|))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_1828) |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_1829) |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|))))) (forall ((v_ArrVal_1828 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$.offset| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_update_at_~head#1.base|) |c_ULTIMATE.start_sll_circular_update_at_~head#1.offset|) v_ArrVal_1828) |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|))) (bvule (bvadd (_ bv4 32) .cse1) (bvadd (_ bv8 32) .cse1))))) is different from false [2021-11-25 19:02:41,831 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1828 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|) v_ArrVal_1828) |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_1828 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1829 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_1828) |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_1829) |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|)))))) is different from false [2021-11-25 19:02:41,876 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1828 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_create_#res#1.base|) |c_ULTIMATE.start_sll_circular_create_#res#1.offset|) v_ArrVal_1828) |c_ULTIMATE.start_sll_circular_create_#res#1.base|) |c_ULTIMATE.start_sll_circular_create_#res#1.offset|))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_1828 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1829 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_create_#res#1.base|) |c_ULTIMATE.start_sll_circular_create_#res#1.offset|))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_1828) |c_ULTIMATE.start_sll_circular_create_#res#1.base|) |c_ULTIMATE.start_sll_circular_create_#res#1.offset|)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_1829) |c_ULTIMATE.start_sll_circular_create_#res#1.base|) |c_ULTIMATE.start_sll_circular_create_#res#1.offset|)))))) is different from false [2021-11-25 19:02:41,916 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1828 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|) v_ArrVal_1828) |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_1828 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1829 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_1828) |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_1829) |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|)))))) is different from false [2021-11-25 19:02:42,149 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1827 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1828 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1826 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_1826) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_1827) |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|) v_ArrVal_1828) |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_1827 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1828 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1826 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1829 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_1827))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|))) (bvule (bvadd (_ bv8 32) (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_1826) .cse1 v_ArrVal_1828) |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|)) (select |c_#length| (select (select (store .cse2 .cse1 v_ArrVal_1829) |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|))))))) is different from false [2021-11-25 19:02:42,224 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1827 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1828 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1826 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1829 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_1827))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.offset|))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_1826) .cse0 v_ArrVal_1828) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.offset|) (_ bv8 32)) (select |c_#length| (select (select (store .cse1 .cse0 v_ArrVal_1829) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.offset|)))))) (forall ((v_ArrVal_1827 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1828 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1826 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_1826) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_1827) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.offset|) v_ArrVal_1828) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.offset|))) (bvule (bvadd .cse2 (_ bv4 32)) (bvadd .cse2 (_ bv8 32)))))) is different from false [2021-11-25 19:02:42,264 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:02:42,265 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 74 [2021-11-25 19:02:42,285 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:02:42,285 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 50 [2021-11-25 19:02:42,294 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 334 treesize of output 290 [2021-11-25 19:02:42,306 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1114 treesize of output 1062 [2021-11-25 19:02:42,329 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1058 treesize of output 1010 [2021-11-25 19:02:42,344 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1010 treesize of output 962 [2021-11-25 19:02:42,358 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 962 treesize of output 938 [2021-11-25 19:02:42,373 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 938 treesize of output 858 [2021-11-25 19:03:39,141 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:03:39,142 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 66 [2021-11-25 19:03:39,154 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:03:39,154 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 50 [2021-11-25 19:03:39,160 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 72 [2021-11-25 19:03:39,168 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 362 treesize of output 326 [2021-11-25 19:03:39,177 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 322 treesize of output 306 [2021-11-25 19:03:39,182 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 306 treesize of output 274 [2021-11-25 19:03:39,203 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 142 treesize of output 130 [2021-11-25 19:03:42,679 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:03:42,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1802352685] [2021-11-25 19:03:42,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1802352685] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:03:42,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [761925287] [2021-11-25 19:03:42,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:03:42,680 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 19:03:42,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 19:03:42,682 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 19:03:42,683 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (44)] Waiting until timeout for monitored process [2021-11-25 19:03:43,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:03:43,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 67 conjunts are in the unsatisfiable core [2021-11-25 19:03:43,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:03:43,245 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 19:03:43,255 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 19:03:43,519 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-25 19:03:43,519 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 19 [2021-11-25 19:03:43,530 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2021-11-25 19:03:43,572 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 19:03:43,588 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 19:03:43,680 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 19:03:43,681 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 37 [2021-11-25 19:03:43,686 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2021-11-25 19:03:44,063 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 19:03:44,064 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 37 [2021-11-25 19:03:44,069 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2021-11-25 19:03:44,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:03:44,195 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 26 [2021-11-25 19:03:44,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:03:44,214 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-25 19:03:44,347 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-25 19:03:44,352 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-25 19:03:44,375 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 19:03:44,376 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:03:45,968 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1899 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_circular_update_at_~head#1.base| v_ArrVal_1899) |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_1900 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1899 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_circular_update_at_~head#1.base| v_ArrVal_1899) |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_update_at_~head#1.base| v_ArrVal_1900) |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|))))) is different from false [2021-11-25 19:03:46,023 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1900 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1899 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_circular_update_at_#t~mem12#1.base| v_ArrVal_1899) |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_update_at_#t~mem12#1.base| v_ArrVal_1900) |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|)))) (forall ((v_ArrVal_1899 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_circular_update_at_#t~mem12#1.base| v_ArrVal_1899) |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0))))) is different from false [2021-11-25 19:03:46,067 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1899 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_update_at_~head#1.base|) |c_ULTIMATE.start_sll_circular_update_at_~head#1.offset|) v_ArrVal_1899) |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|))) (bvule (bvadd .cse0 (_ bv4 32)) (bvadd .cse0 (_ bv8 32))))) (forall ((v_ArrVal_1900 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1899 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_update_at_~head#1.base|) |c_ULTIMATE.start_sll_circular_update_at_~head#1.offset|))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_1899) |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|) (_ bv8 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_1900) |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|)))))) is different from false [2021-11-25 19:03:46,130 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1899 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|) v_ArrVal_1899) |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_1900 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1899 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_1899) |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_1900) |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|)))))) is different from false [2021-11-25 19:03:46,169 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1900 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1899 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_create_#res#1.base|) |c_ULTIMATE.start_sll_circular_create_#res#1.offset|))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_1899) |c_ULTIMATE.start_sll_circular_create_#res#1.base|) |c_ULTIMATE.start_sll_circular_create_#res#1.offset|)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_1900) |c_ULTIMATE.start_sll_circular_create_#res#1.base|) |c_ULTIMATE.start_sll_circular_create_#res#1.offset|))))) (forall ((v_ArrVal_1899 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$.offset| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_create_#res#1.base|) |c_ULTIMATE.start_sll_circular_create_#res#1.offset|) v_ArrVal_1899) |c_ULTIMATE.start_sll_circular_create_#res#1.base|) |c_ULTIMATE.start_sll_circular_create_#res#1.offset|))) (bvule (bvadd (_ bv4 32) .cse1) (bvadd (_ bv8 32) .cse1))))) is different from false [2021-11-25 19:03:46,211 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1900 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1899 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_1899) |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_1900) |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|))))) (forall ((v_ArrVal_1899 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$.offset| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|) v_ArrVal_1899) |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|))) (bvule (bvadd (_ bv4 32) .cse1) (bvadd (_ bv8 32) .cse1))))) is different from false [2021-11-25 19:03:46,259 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1896 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1898 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1899 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_1898) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_1896) |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|) v_ArrVal_1899) |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_1896 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1900 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1898 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1899 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_1896))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|))) (bvule (bvadd (_ bv8 32) (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_1898) .cse1 v_ArrVal_1899) |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|)) (select |c_#length| (select (select (store .cse2 .cse1 v_ArrVal_1900) |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|))))))) is different from false [2021-11-25 19:03:46,335 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1896 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1900 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1898 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1899 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_1896))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.offset|))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_1898) .cse0 v_ArrVal_1899) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.offset|) (_ bv8 32)) (select |c_#length| (select (select (store .cse1 .cse0 v_ArrVal_1900) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.offset|)))))) (forall ((v_ArrVal_1896 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1898 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1899 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_1898) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_1896) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.offset|) v_ArrVal_1899) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.offset|))) (bvule (bvadd (_ bv4 32) .cse2) (bvadd .cse2 (_ bv8 32)))))) is different from false [2021-11-25 19:03:46,367 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:03:46,367 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 66 [2021-11-25 19:03:46,378 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:03:46,378 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 50 [2021-11-25 19:03:46,384 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 72 [2021-11-25 19:03:46,389 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 362 treesize of output 326 [2021-11-25 19:03:46,397 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 322 treesize of output 306 [2021-11-25 19:03:46,402 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 306 treesize of output 274 [2021-11-25 19:03:46,429 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 142 treesize of output 130 [2021-11-25 19:03:46,977 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:03:46,977 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 74 [2021-11-25 19:03:46,995 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:03:46,995 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 50 [2021-11-25 19:03:47,000 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:03:47,004 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 50 [2021-11-25 19:03:47,009 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:03:47,009 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:03:47,014 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 30 [2021-11-25 19:03:47,023 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 11 [2021-11-25 19:03:47,747 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [761925287] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:03:47,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [923504040] [2021-11-25 19:03:47,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:03:47,748 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:03:47,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:03:47,764 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:03:47,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2021-11-25 19:03:48,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:03:48,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 52 conjunts are in the unsatisfiable core [2021-11-25 19:03:48,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:03:48,634 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 19:03:48,963 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-25 19:03:48,963 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 18 [2021-11-25 19:03:49,265 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 19:03:49,628 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 19:03:49,628 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 22 [2021-11-25 19:03:50,808 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 19:03:50,808 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2021-11-25 19:03:50,814 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 39 [2021-11-25 19:03:51,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:03:51,818 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 32 [2021-11-25 19:03:51,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:03:51,840 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 35 [2021-11-25 19:03:52,443 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2021-11-25 19:03:52,451 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 18 [2021-11-25 19:03:53,497 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-25 19:03:53,497 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:03:55,208 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_sll_circular_update_at_~head#1.offset|))) (or (not (bvule (bvadd (_ bv4 32) |c_ULTIMATE.start_sll_circular_update_at_~head#1.offset|) .cse0)) (and (forall ((v_ArrVal_1965 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_circular_update_at_~head#1.base| v_ArrVal_1965) |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|))) (bvule (bvadd (_ bv4 32) .cse1) (bvadd (_ bv8 32) .cse1)))) (forall ((v_ArrVal_1964 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1965 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_circular_update_at_~head#1.base| v_ArrVal_1965) |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_update_at_~head#1.base| v_ArrVal_1964) |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|))))) (not (bvule .cse0 (select |c_#length| |c_ULTIMATE.start_sll_circular_update_at_~head#1.base|))))) is different from false [2021-11-25 19:03:56,275 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:03:56,276 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 138 treesize of output 125 [2021-11-25 19:03:56,289 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 93 treesize of output 91 [2021-11-25 19:03:56,301 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 87 [2021-11-25 19:03:58,866 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:03:58,866 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 35 [2021-11-25 19:03:58,883 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 53 [2021-11-25 19:03:58,892 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 45 [2021-11-25 19:04:00,246 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 39 [2021-11-25 19:04:03,204 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 39 [2021-11-25 19:04:04,187 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 3 not checked. [2021-11-25 19:04:04,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [923504040] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:04:04,187 INFO L186 FreeRefinementEngine]: Found 0 perfect and 4 imperfect interpolant sequences. [2021-11-25 19:04:04,188 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 23, 23] total 63 [2021-11-25 19:04:04,188 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28477035] [2021-11-25 19:04:04,188 INFO L85 oduleStraightlineAll]: Using 4 imperfect interpolants to construct interpolant automaton [2021-11-25 19:04:04,188 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2021-11-25 19:04:04,189 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:04:04,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2021-11-25 19:04:04,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=250, Invalid=4211, Unknown=29, NotChecked=2482, Total=6972 [2021-11-25 19:04:04,192 INFO L87 Difference]: Start difference. First operand 131 states and 157 transitions. Second operand has 64 states, 63 states have (on average 1.8571428571428572) internal successors, (117), 56 states have internal predecessors, (117), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2021-11-25 19:04:14,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:04:14,976 INFO L93 Difference]: Finished difference Result 221 states and 248 transitions. [2021-11-25 19:04:14,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-25 19:04:14,978 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 63 states have (on average 1.8571428571428572) internal successors, (117), 56 states have internal predecessors, (117), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) Word has length 48 [2021-11-25 19:04:14,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:04:14,980 INFO L225 Difference]: With dead ends: 221 [2021-11-25 19:04:14,980 INFO L226 Difference]: Without dead ends: 221 [2021-11-25 19:04:14,984 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 157 SyntacticMatches, 13 SemanticMatches, 100 ConstructedPredicates, 17 IntricatePredicates, 1 DeprecatedPredicates, 1596 ImplicationChecksByTransitivity, 28.0s TimeCoverageRelationStatistics Valid=591, Invalid=6588, Unknown=29, NotChecked=3094, Total=10302 [2021-11-25 19:04:14,985 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 1278 mSDsluCounter, 1445 mSDsCounter, 0 mSdLazyCounter, 734 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1278 SdHoareTripleChecker+Valid, 1504 SdHoareTripleChecker+Invalid, 1310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 734 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 541 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-11-25 19:04:14,985 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1278 Valid, 1504 Invalid, 1310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 734 Invalid, 0 Unknown, 541 Unchecked, 2.6s Time] [2021-11-25 19:04:14,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2021-11-25 19:04:14,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 135. [2021-11-25 19:04:14,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 115 states have (on average 1.3043478260869565) internal successors, (150), 130 states have internal predecessors, (150), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-25 19:04:15,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 154 transitions. [2021-11-25 19:04:15,001 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 154 transitions. Word has length 48 [2021-11-25 19:04:15,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:04:15,002 INFO L470 AbstractCegarLoop]: Abstraction has 135 states and 154 transitions. [2021-11-25 19:04:15,002 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 63 states have (on average 1.8571428571428572) internal successors, (117), 56 states have internal predecessors, (117), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2021-11-25 19:04:15,002 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 154 transitions. [2021-11-25 19:04:15,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-25 19:04:15,003 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:04:15,003 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:04:15,008 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (44)] Forceful destruction successful, exit code 0 [2021-11-25 19:04:15,226 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (43)] Forceful destruction successful, exit code 0 [2021-11-25 19:04:15,436 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2021-11-25 19:04:15,607 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt,43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3,45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:04:15,608 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 24 more)] === [2021-11-25 19:04:15,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:04:15,608 INFO L85 PathProgramCache]: Analyzing trace with hash 836425368, now seen corresponding path program 1 times [2021-11-25 19:04:15,609 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:04:15,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [100814751] [2021-11-25 19:04:15,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:04:15,609 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:04:15,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:04:15,610 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:04:15,620 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2021-11-25 19:04:15,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:04:15,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 73 conjunts are in the unsatisfiable core [2021-11-25 19:04:15,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:04:16,003 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 19:04:16,229 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-25 19:04:16,230 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 23 [2021-11-25 19:04:16,335 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 19:04:16,350 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 19:04:16,499 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 19:04:16,499 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2021-11-25 19:04:16,504 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2021-11-25 19:04:17,318 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 19:04:17,319 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 55 [2021-11-25 19:04:17,327 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-11-25 19:04:17,332 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 34 [2021-11-25 19:04:17,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:04:17,773 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 38 [2021-11-25 19:04:17,780 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2021-11-25 19:04:17,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:04:17,787 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 34 [2021-11-25 19:04:18,318 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 25 [2021-11-25 19:04:18,328 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2021-11-25 19:04:18,694 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2021-11-25 19:04:19,184 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 14 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-25 19:04:19,184 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:04:20,481 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2038 (_ BitVec 32)) (v_ArrVal_2037 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2035 (_ BitVec 32))) (= (bvmul (_ bv2 32) |c_ULTIMATE.start_main_~len~0#1|) (bvadd (let ((.cse0 (bvadd (_ bv4 32) |c_ULTIMATE.start_sll_circular_update_at_~head#1.offset|))) (select (select (store |c_#memory_int| |c_ULTIMATE.start_sll_circular_update_at_~head#1.base| v_ArrVal_2037) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_update_at_~head#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_update_at_~head#1.base|) .cse0 v_ArrVal_2035)) |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|)) (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_circular_update_at_~head#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_circular_update_at_~head#1.base|) .cse0 v_ArrVal_2038)) |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|)))) (_ bv1 32)))) is different from false [2021-11-25 19:04:20,530 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2038 (_ BitVec 32)) (v_ArrVal_2037 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2035 (_ BitVec 32))) (= (bvmul (_ bv2 32) |c_ULTIMATE.start_main_~len~0#1|) (bvadd (let ((.cse0 (bvadd |c_ULTIMATE.start_main_~s~0#1.offset| (_ bv4 32)))) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~s~0#1.base| v_ArrVal_2037) (select (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~s~0#1.base|) .cse0 v_ArrVal_2035) |c_ULTIMATE.start_main_~s~0#1.offset|)) (bvadd (_ bv4 32) (select (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~s~0#1.base|) .cse0 v_ArrVal_2038) |c_ULTIMATE.start_main_~s~0#1.offset|)))) (_ bv1 32)))) is different from false [2021-11-25 19:04:20,566 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:04:20,566 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 51 [2021-11-25 19:04:20,592 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:04:20,592 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 104 treesize of output 107 [2021-11-25 19:04:20,602 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 23 [2021-11-25 19:04:20,759 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_2030 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2035 (_ BitVec 32))) (= |c_ULTIMATE.start_sll_circular_update_at_~head#1.base| (select (store (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_update_at_~head#1.base| v_ArrVal_2030) |c_ULTIMATE.start_main_~s~0#1.base|) (bvadd |c_ULTIMATE.start_main_~s~0#1.offset| (_ bv4 32)) v_ArrVal_2035) |c_ULTIMATE.start_main_~s~0#1.offset|))) (forall ((v_ArrVal_2030 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2035 (_ BitVec 32))) (not (= |c_ULTIMATE.start_main_~s~0#1.base| (select (store (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_update_at_~head#1.base| v_ArrVal_2030) |c_ULTIMATE.start_main_~s~0#1.base|) (bvadd |c_ULTIMATE.start_main_~s~0#1.offset| (_ bv4 32)) v_ArrVal_2035) |c_ULTIMATE.start_main_~s~0#1.offset|)))) (= (bvadd |c_ULTIMATE.start_sll_circular_update_at_~data#1| (_ bv1 32)) (bvmul (_ bv2 32) |c_ULTIMATE.start_main_~len~0#1|)) (forall ((v_ArrVal_2038 (_ BitVec 32)) (v_ArrVal_2032 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_ULTIMATE.start_sll_circular_update_at_~head#1.offset| (select (store (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_circular_update_at_~head#1.base| v_ArrVal_2032) |c_ULTIMATE.start_main_~s~0#1.base|) (bvadd |c_ULTIMATE.start_main_~s~0#1.offset| (_ bv4 32)) v_ArrVal_2038) |c_ULTIMATE.start_main_~s~0#1.offset|)))) is different from false [2021-11-25 19:04:20,817 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_2038 (_ BitVec 32)) (v_ArrVal_2032 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_ULTIMATE.start_sll_circular_update_at_#t~mem12#1.offset| (select (store (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_circular_update_at_#t~mem12#1.base| v_ArrVal_2032) |c_ULTIMATE.start_main_~s~0#1.base|) (bvadd |c_ULTIMATE.start_main_~s~0#1.offset| (_ bv4 32)) v_ArrVal_2038) |c_ULTIMATE.start_main_~s~0#1.offset|))) (forall ((v_ArrVal_2030 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2035 (_ BitVec 32))) (not (= |c_ULTIMATE.start_main_~s~0#1.base| (select (store (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_update_at_#t~mem12#1.base| v_ArrVal_2030) |c_ULTIMATE.start_main_~s~0#1.base|) (bvadd |c_ULTIMATE.start_main_~s~0#1.offset| (_ bv4 32)) v_ArrVal_2035) |c_ULTIMATE.start_main_~s~0#1.offset|)))) (= (bvadd |c_ULTIMATE.start_sll_circular_update_at_~data#1| (_ bv1 32)) (bvmul (_ bv2 32) |c_ULTIMATE.start_main_~len~0#1|)) (forall ((v_ArrVal_2030 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2035 (_ BitVec 32))) (= (select (store (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_update_at_#t~mem12#1.base| v_ArrVal_2030) |c_ULTIMATE.start_main_~s~0#1.base|) (bvadd |c_ULTIMATE.start_main_~s~0#1.offset| (_ bv4 32)) v_ArrVal_2035) |c_ULTIMATE.start_main_~s~0#1.offset|) |c_ULTIMATE.start_sll_circular_update_at_#t~mem12#1.base|))) is different from false [2021-11-25 19:04:20,857 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_2030 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2035 (_ BitVec 32))) (not (= (select (store (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_update_at_~head#1.base|) |c_ULTIMATE.start_sll_circular_update_at_~head#1.offset|) v_ArrVal_2030) |c_ULTIMATE.start_main_~s~0#1.base|) (bvadd |c_ULTIMATE.start_main_~s~0#1.offset| (_ bv4 32)) v_ArrVal_2035) |c_ULTIMATE.start_main_~s~0#1.offset|) |c_ULTIMATE.start_main_~s~0#1.base|))) (forall ((v_ArrVal_2030 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2035 (_ BitVec 32))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_update_at_~head#1.base|) |c_ULTIMATE.start_sll_circular_update_at_~head#1.offset|))) (= (select (store (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_2030) |c_ULTIMATE.start_main_~s~0#1.base|) (bvadd |c_ULTIMATE.start_main_~s~0#1.offset| (_ bv4 32)) v_ArrVal_2035) |c_ULTIMATE.start_main_~s~0#1.offset|) .cse0))) (forall ((v_ArrVal_2038 (_ BitVec 32)) (v_ArrVal_2032 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (store (select (store |c_#memory_$Pointer$.offset| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_update_at_~head#1.base|) |c_ULTIMATE.start_sll_circular_update_at_~head#1.offset|) v_ArrVal_2032) |c_ULTIMATE.start_main_~s~0#1.base|) (bvadd |c_ULTIMATE.start_main_~s~0#1.offset| (_ bv4 32)) v_ArrVal_2038) |c_ULTIMATE.start_main_~s~0#1.offset|) (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_circular_update_at_~head#1.base|) |c_ULTIMATE.start_sll_circular_update_at_~head#1.offset|))) (= (bvadd |c_ULTIMATE.start_sll_circular_update_at_~data#1| (_ bv1 32)) (bvmul (_ bv2 32) |c_ULTIMATE.start_main_~len~0#1|))) is different from false [2021-11-25 19:04:20,946 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_2030 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2035 (_ BitVec 32))) (not (= |c_ULTIMATE.start_main_~s~0#1.base| (select (store (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|) v_ArrVal_2030) |c_ULTIMATE.start_main_~s~0#1.base|) (bvadd |c_ULTIMATE.start_main_~s~0#1.offset| (_ bv4 32)) v_ArrVal_2035) |c_ULTIMATE.start_main_~s~0#1.offset|)))) (= |c_ULTIMATE.start_main_~len~0#1| (bvadd |c_ULTIMATE.start_main_~i~0#1| (_ bv1 32))) (forall ((v_ArrVal_2030 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2035 (_ BitVec 32))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|))) (= .cse0 (select (store (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_2030) |c_ULTIMATE.start_main_~s~0#1.base|) (bvadd |c_ULTIMATE.start_main_~s~0#1.offset| (_ bv4 32)) v_ArrVal_2035) |c_ULTIMATE.start_main_~s~0#1.offset|)))) (forall ((v_ArrVal_2038 (_ BitVec 32)) (v_ArrVal_2032 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (store (select (store |c_#memory_$Pointer$.offset| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|) v_ArrVal_2032) |c_ULTIMATE.start_main_~s~0#1.base|) (bvadd |c_ULTIMATE.start_main_~s~0#1.offset| (_ bv4 32)) v_ArrVal_2038) |c_ULTIMATE.start_main_~s~0#1.offset|) (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|)))) is different from false [2021-11-25 19:04:20,989 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_2038 (_ BitVec 32)) (v_ArrVal_2032 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (store (select (store |c_#memory_$Pointer$.offset| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_create_#res#1.base|) |c_ULTIMATE.start_sll_circular_create_#res#1.offset|) v_ArrVal_2032) |c_ULTIMATE.start_sll_circular_create_#res#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_sll_circular_create_#res#1.offset|) v_ArrVal_2038) |c_ULTIMATE.start_sll_circular_create_#res#1.offset|) (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_circular_create_#res#1.base|) |c_ULTIMATE.start_sll_circular_create_#res#1.offset|))) (forall ((v_ArrVal_2030 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2035 (_ BitVec 32))) (not (= |c_ULTIMATE.start_sll_circular_create_#res#1.base| (select (store (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_create_#res#1.base|) |c_ULTIMATE.start_sll_circular_create_#res#1.offset|) v_ArrVal_2030) |c_ULTIMATE.start_sll_circular_create_#res#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_sll_circular_create_#res#1.offset|) v_ArrVal_2035) |c_ULTIMATE.start_sll_circular_create_#res#1.offset|)))) (forall ((v_ArrVal_2030 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2035 (_ BitVec 32))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_create_#res#1.base|) |c_ULTIMATE.start_sll_circular_create_#res#1.offset|))) (= (select (store (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_2030) |c_ULTIMATE.start_sll_circular_create_#res#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_sll_circular_create_#res#1.offset|) v_ArrVal_2035) |c_ULTIMATE.start_sll_circular_create_#res#1.offset|) .cse0)))) is different from false [2021-11-25 19:04:21,026 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_2030 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2035 (_ BitVec 32))) (not (= (select (store (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|) v_ArrVal_2030) |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|) v_ArrVal_2035) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|))) (forall ((v_ArrVal_2030 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2035 (_ BitVec 32))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|))) (= (select (store (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_2030) |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|) v_ArrVal_2035) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|) .cse0))) (forall ((v_ArrVal_2038 (_ BitVec 32)) (v_ArrVal_2032 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|) (select (store (select (store |c_#memory_$Pointer$.offset| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|) v_ArrVal_2032) |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|) v_ArrVal_2038) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|)))) is different from false [2021-11-25 19:04:21,075 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_2038 (_ BitVec 32)) (v_ArrVal_2032 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2028 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2029 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_2028))) (= (select (select .cse0 |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|) (select (store (select (store .cse0 (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_2029) |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|) v_ArrVal_2032) |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|) v_ArrVal_2038) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|)))) (forall ((v_ArrVal_2030 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2029 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2035 (_ BitVec 32))) (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_2029))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|))) (= .cse1 (select (store (select (store .cse2 .cse1 v_ArrVal_2030) |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|) v_ArrVal_2035) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|))))) (forall ((v_ArrVal_2030 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2029 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2035 (_ BitVec 32))) (not (= (select (store (select (let ((.cse3 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_2029))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|) v_ArrVal_2030)) |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|) v_ArrVal_2035) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|)))) is different from false [2021-11-25 19:04:21,162 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_2038 (_ BitVec 32)) (v_ArrVal_2032 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2028 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2029 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_2028))) (= (select (store (select (store .cse0 (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_2029) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.offset|) v_ArrVal_2032) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.offset|) v_ArrVal_2038) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.offset|) (select (select .cse0 |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.offset|)))) (forall ((v_ArrVal_2030 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2029 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2035 (_ BitVec 32))) (not (= (select (store (select (let ((.cse1 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_2029))) (store .cse1 (select (select .cse1 |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.offset|) v_ArrVal_2030)) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.offset|) v_ArrVal_2035) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.offset|) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.base|))) (forall ((v_ArrVal_2030 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2029 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2035 (_ BitVec 32))) (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_2029))) (let ((.cse3 (select (select .cse2 |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.offset|))) (= (select (store (select (store .cse2 .cse3 v_ArrVal_2030) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.offset|) v_ArrVal_2035) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.offset|) .cse3))))) is different from false [2021-11-25 19:04:21,200 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:04:21,200 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 49 [2021-11-25 19:04:21,215 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:04:21,215 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 41 [2021-11-25 19:04:21,223 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 66 [2021-11-25 19:04:21,231 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 578 treesize of output 540 [2021-11-25 19:04:21,241 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:04:21,245 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 474 treesize of output 450 [2021-11-25 19:04:21,255 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:04:21,259 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 396 treesize of output 372 [2021-11-25 19:04:21,286 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 126 treesize of output 112 [2021-11-25 19:04:21,319 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 401 treesize of output 369 [2021-11-25 19:04:21,684 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-25 19:04:21,684 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 1 [2021-11-25 19:04:21,696 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-25 19:04:21,696 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 1 [2021-11-25 19:04:22,974 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 10 not checked. [2021-11-25 19:04:22,974 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:04:22,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [100814751] [2021-11-25 19:04:22,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [100814751] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:04:22,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2087236010] [2021-11-25 19:04:22,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:04:22,975 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 19:04:22,975 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 19:04:22,976 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 19:04:22,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (47)] Waiting until timeout for monitored process [2021-11-25 19:04:23,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:04:23,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 75 conjunts are in the unsatisfiable core [2021-11-25 19:04:23,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:04:23,667 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 19:04:24,576 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-25 19:04:24,576 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 18 [2021-11-25 19:04:24,971 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 19:04:24,979 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 19:04:25,445 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 19:04:25,446 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2021-11-25 19:04:25,453 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2021-11-25 19:04:26,955 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 19:04:26,955 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 55 [2021-11-25 19:04:26,961 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-11-25 19:04:26,967 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 39 [2021-11-25 19:04:27,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:04:27,610 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 38 [2021-11-25 19:04:27,617 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2021-11-25 19:04:27,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:04:27,625 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 37 [2021-11-25 19:04:28,503 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 21 [2021-11-25 19:04:28,508 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-11-25 19:04:28,947 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-25 19:04:29,613 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 14 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-25 19:04:29,613 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:04:29,764 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2104 (_ BitVec 32)) (v_ArrVal_2106 (_ BitVec 32)) (v_ArrVal_2103 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvmul (_ bv2 32) |c_ULTIMATE.start_main_~len~0#1|) (bvadd (let ((.cse0 (bvadd (_ bv4 32) |c_ULTIMATE.start_sll_circular_update_at_~head#1.offset|))) (select (select (store |c_#memory_int| |c_ULTIMATE.start_sll_circular_update_at_~head#1.base| v_ArrVal_2103) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_update_at_~head#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_update_at_~head#1.base|) .cse0 v_ArrVal_2106)) |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|)) (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_circular_update_at_~head#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_circular_update_at_~head#1.base|) .cse0 v_ArrVal_2104)) |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|)))) (_ bv1 32)))) is different from false [2021-11-25 19:04:29,816 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2104 (_ BitVec 32)) (v_ArrVal_2106 (_ BitVec 32)) (v_ArrVal_2103 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvmul (_ bv2 32) |c_ULTIMATE.start_main_~len~0#1|) (bvadd (_ bv1 32) (let ((.cse0 (bvadd |c_ULTIMATE.start_main_~s~0#1.offset| (_ bv4 32)))) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~s~0#1.base| v_ArrVal_2103) (select (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~s~0#1.base|) .cse0 v_ArrVal_2106) |c_ULTIMATE.start_main_~s~0#1.offset|)) (bvadd (_ bv4 32) (select (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~s~0#1.base|) .cse0 v_ArrVal_2104) |c_ULTIMATE.start_main_~s~0#1.offset|))))))) is different from false [2021-11-25 19:04:29,856 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:04:29,856 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 51 [2021-11-25 19:04:29,890 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:04:29,890 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 104 treesize of output 107 [2021-11-25 19:04:29,906 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 23 [2021-11-25 19:04:30,127 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_2104 (_ BitVec 32)) (v_ArrVal_2099 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (store (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_circular_update_at_~head#1.base| v_ArrVal_2099) |c_ULTIMATE.start_main_~s~0#1.base|) (bvadd |c_ULTIMATE.start_main_~s~0#1.offset| (_ bv4 32)) v_ArrVal_2104) |c_ULTIMATE.start_main_~s~0#1.offset|) |c_ULTIMATE.start_sll_circular_update_at_~head#1.offset|)) (forall ((v_ArrVal_2106 (_ BitVec 32)) (v_ArrVal_2101 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_ULTIMATE.start_sll_circular_update_at_~head#1.base| (select (store (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_update_at_~head#1.base| v_ArrVal_2101) |c_ULTIMATE.start_main_~s~0#1.base|) (bvadd |c_ULTIMATE.start_main_~s~0#1.offset| (_ bv4 32)) v_ArrVal_2106) |c_ULTIMATE.start_main_~s~0#1.offset|))) (forall ((v_ArrVal_2106 (_ BitVec 32)) (v_ArrVal_2101 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= |c_ULTIMATE.start_main_~s~0#1.base| (select (store (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_update_at_~head#1.base| v_ArrVal_2101) |c_ULTIMATE.start_main_~s~0#1.base|) (bvadd |c_ULTIMATE.start_main_~s~0#1.offset| (_ bv4 32)) v_ArrVal_2106) |c_ULTIMATE.start_main_~s~0#1.offset|)))) (= (bvadd |c_ULTIMATE.start_sll_circular_update_at_~data#1| (_ bv1 32)) (bvmul (_ bv2 32) |c_ULTIMATE.start_main_~len~0#1|))) is different from false [2021-11-25 19:04:30,210 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_2106 (_ BitVec 32)) (v_ArrVal_2101 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (store (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_update_at_#t~mem12#1.base| v_ArrVal_2101) |c_ULTIMATE.start_main_~s~0#1.base|) (bvadd |c_ULTIMATE.start_main_~s~0#1.offset| (_ bv4 32)) v_ArrVal_2106) |c_ULTIMATE.start_main_~s~0#1.offset|) |c_ULTIMATE.start_sll_circular_update_at_#t~mem12#1.base|)) (forall ((v_ArrVal_2104 (_ BitVec 32)) (v_ArrVal_2099 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_ULTIMATE.start_sll_circular_update_at_#t~mem12#1.offset| (select (store (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_circular_update_at_#t~mem12#1.base| v_ArrVal_2099) |c_ULTIMATE.start_main_~s~0#1.base|) (bvadd |c_ULTIMATE.start_main_~s~0#1.offset| (_ bv4 32)) v_ArrVal_2104) |c_ULTIMATE.start_main_~s~0#1.offset|))) (forall ((v_ArrVal_2106 (_ BitVec 32)) (v_ArrVal_2101 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= |c_ULTIMATE.start_main_~s~0#1.base| (select (store (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_update_at_#t~mem12#1.base| v_ArrVal_2101) |c_ULTIMATE.start_main_~s~0#1.base|) (bvadd |c_ULTIMATE.start_main_~s~0#1.offset| (_ bv4 32)) v_ArrVal_2106) |c_ULTIMATE.start_main_~s~0#1.offset|)))) (= (bvadd |c_ULTIMATE.start_sll_circular_update_at_~data#1| (_ bv1 32)) (bvmul (_ bv2 32) |c_ULTIMATE.start_main_~len~0#1|))) is different from false [2021-11-25 19:04:30,263 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_2104 (_ BitVec 32)) (v_ArrVal_2099 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (store (select (store |c_#memory_$Pointer$.offset| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_update_at_~head#1.base|) |c_ULTIMATE.start_sll_circular_update_at_~head#1.offset|) v_ArrVal_2099) |c_ULTIMATE.start_main_~s~0#1.base|) (bvadd |c_ULTIMATE.start_main_~s~0#1.offset| (_ bv4 32)) v_ArrVal_2104) |c_ULTIMATE.start_main_~s~0#1.offset|) (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_circular_update_at_~head#1.base|) |c_ULTIMATE.start_sll_circular_update_at_~head#1.offset|))) (forall ((v_ArrVal_2106 (_ BitVec 32)) (v_ArrVal_2101 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_update_at_~head#1.base|) |c_ULTIMATE.start_sll_circular_update_at_~head#1.offset|))) (= (select (store (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_2101) |c_ULTIMATE.start_main_~s~0#1.base|) (bvadd |c_ULTIMATE.start_main_~s~0#1.offset| (_ bv4 32)) v_ArrVal_2106) |c_ULTIMATE.start_main_~s~0#1.offset|) .cse0))) (= (bvadd |c_ULTIMATE.start_sll_circular_update_at_~data#1| (_ bv1 32)) (bvmul (_ bv2 32) |c_ULTIMATE.start_main_~len~0#1|)) (forall ((v_ArrVal_2106 (_ BitVec 32)) (v_ArrVal_2101 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= |c_ULTIMATE.start_main_~s~0#1.base| (select (store (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_update_at_~head#1.base|) |c_ULTIMATE.start_sll_circular_update_at_~head#1.offset|) v_ArrVal_2101) |c_ULTIMATE.start_main_~s~0#1.base|) (bvadd |c_ULTIMATE.start_main_~s~0#1.offset| (_ bv4 32)) v_ArrVal_2106) |c_ULTIMATE.start_main_~s~0#1.offset|))))) is different from false [2021-11-25 19:04:30,352 WARN L838 $PredicateComparison]: unable to prove that (and (= |c_ULTIMATE.start_main_~len~0#1| (bvadd |c_ULTIMATE.start_main_~i~0#1| (_ bv1 32))) (forall ((v_ArrVal_2106 (_ BitVec 32)) (v_ArrVal_2101 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= |c_ULTIMATE.start_main_~s~0#1.base| (select (store (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|) v_ArrVal_2101) |c_ULTIMATE.start_main_~s~0#1.base|) (bvadd |c_ULTIMATE.start_main_~s~0#1.offset| (_ bv4 32)) v_ArrVal_2106) |c_ULTIMATE.start_main_~s~0#1.offset|)))) (forall ((v_ArrVal_2106 (_ BitVec 32)) (v_ArrVal_2101 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|))) (= .cse0 (select (store (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_2101) |c_ULTIMATE.start_main_~s~0#1.base|) (bvadd |c_ULTIMATE.start_main_~s~0#1.offset| (_ bv4 32)) v_ArrVal_2106) |c_ULTIMATE.start_main_~s~0#1.offset|)))) (forall ((v_ArrVal_2104 (_ BitVec 32)) (v_ArrVal_2099 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|) (select (store (select (store |c_#memory_$Pointer$.offset| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|) v_ArrVal_2099) |c_ULTIMATE.start_main_~s~0#1.base|) (bvadd |c_ULTIMATE.start_main_~s~0#1.offset| (_ bv4 32)) v_ArrVal_2104) |c_ULTIMATE.start_main_~s~0#1.offset|)))) is different from false [2021-11-25 19:04:30,390 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_2106 (_ BitVec 32)) (v_ArrVal_2101 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_create_#res#1.base|) |c_ULTIMATE.start_sll_circular_create_#res#1.offset|))) (= (select (store (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_2101) |c_ULTIMATE.start_sll_circular_create_#res#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_sll_circular_create_#res#1.offset|) v_ArrVal_2106) |c_ULTIMATE.start_sll_circular_create_#res#1.offset|) .cse0))) (forall ((v_ArrVal_2104 (_ BitVec 32)) (v_ArrVal_2099 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (store (select (store |c_#memory_$Pointer$.offset| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_create_#res#1.base|) |c_ULTIMATE.start_sll_circular_create_#res#1.offset|) v_ArrVal_2099) |c_ULTIMATE.start_sll_circular_create_#res#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_sll_circular_create_#res#1.offset|) v_ArrVal_2104) |c_ULTIMATE.start_sll_circular_create_#res#1.offset|) (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_circular_create_#res#1.base|) |c_ULTIMATE.start_sll_circular_create_#res#1.offset|))) (forall ((v_ArrVal_2106 (_ BitVec 32)) (v_ArrVal_2101 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= (select (store (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_create_#res#1.base|) |c_ULTIMATE.start_sll_circular_create_#res#1.offset|) v_ArrVal_2101) |c_ULTIMATE.start_sll_circular_create_#res#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_sll_circular_create_#res#1.offset|) v_ArrVal_2106) |c_ULTIMATE.start_sll_circular_create_#res#1.offset|) |c_ULTIMATE.start_sll_circular_create_#res#1.base|)))) is different from false [2021-11-25 19:04:30,427 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_2104 (_ BitVec 32)) (v_ArrVal_2099 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (store (select (store |c_#memory_$Pointer$.offset| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|) v_ArrVal_2099) |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|) v_ArrVal_2104) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|) (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|))) (forall ((v_ArrVal_2106 (_ BitVec 32)) (v_ArrVal_2101 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|))) (= .cse0 (select (store (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_2101) |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|) v_ArrVal_2106) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|)))) (forall ((v_ArrVal_2106 (_ BitVec 32)) (v_ArrVal_2101 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= |c_ULTIMATE.start_sll_circular_create_~head~0#1.base| (select (store (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|) v_ArrVal_2101) |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|) v_ArrVal_2106) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|))))) is different from false [2021-11-25 19:04:30,476 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_2097 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2104 (_ BitVec 32)) (v_ArrVal_2098 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2099 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_2098))) (= (select (store (select (store .cse0 (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_2097) |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|) v_ArrVal_2099) |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|) v_ArrVal_2104) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|) (select (select .cse0 |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|)))) (forall ((v_ArrVal_2097 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2106 (_ BitVec 32)) (v_ArrVal_2101 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_2097))) (let ((.cse2 (select (select .cse1 |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|))) (= (select (store (select (store .cse1 .cse2 v_ArrVal_2101) |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|) v_ArrVal_2106) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|) .cse2)))) (forall ((v_ArrVal_2097 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2106 (_ BitVec 32)) (v_ArrVal_2101 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= (select (store (select (let ((.cse3 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_2097))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|) v_ArrVal_2101)) |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|) v_ArrVal_2106) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|)))) is different from false [2021-11-25 19:04:30,587 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_2097 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2106 (_ BitVec 32)) (v_ArrVal_2101 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_2097))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.offset|))) (= (select (store (select (store .cse0 .cse1 v_ArrVal_2101) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.offset|) v_ArrVal_2106) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.offset|) .cse1)))) (forall ((v_ArrVal_2097 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2104 (_ BitVec 32)) (v_ArrVal_2098 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2099 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_2098))) (= (select (select .cse2 |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.offset|) (select (store (select (store .cse2 (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_2097) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.offset|) v_ArrVal_2099) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.offset|) v_ArrVal_2104) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.offset|)))) (forall ((v_ArrVal_2097 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2106 (_ BitVec 32)) (v_ArrVal_2101 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= (select (store (select (let ((.cse3 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_2097))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.offset|) v_ArrVal_2101)) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.offset|) v_ArrVal_2106) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.offset|) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.base|)))) is different from false [2021-11-25 19:04:30,640 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:04:30,641 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 35 [2021-11-25 19:04:30,654 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 285 treesize of output 267 [2021-11-25 19:04:30,662 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:04:30,666 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 250 treesize of output 234 [2021-11-25 19:04:30,676 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 221 treesize of output 203 [2021-11-25 19:04:30,691 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 105 treesize of output 103 [2021-11-25 19:04:30,728 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 109 treesize of output 103 [2021-11-25 19:04:30,798 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-25 19:04:30,798 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 1 [2021-11-25 19:04:30,809 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-25 19:04:30,811 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 1 [2021-11-25 19:04:31,661 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 10 not checked. [2021-11-25 19:04:31,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2087236010] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:04:31,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1436579504] [2021-11-25 19:04:31,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:04:31,662 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:04:31,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:04:31,669 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:04:31,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2021-11-25 19:04:31,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:04:31,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 67 conjunts are in the unsatisfiable core [2021-11-25 19:04:31,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:04:33,033 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-25 19:04:33,033 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 23 [2021-11-25 19:04:33,460 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 19:04:33,956 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 19:04:33,956 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 22 [2021-11-25 19:04:35,634 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 19:04:35,634 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 55 [2021-11-25 19:04:35,642 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-11-25 19:04:35,648 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 34 [2021-11-25 19:04:36,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:04:36,419 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 38 [2021-11-25 19:04:36,427 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2021-11-25 19:04:36,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:04:36,434 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 34 [2021-11-25 19:04:37,165 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 21 [2021-11-25 19:04:37,170 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-11-25 19:04:37,689 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-11-25 19:04:37,719 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-25 19:04:37,719 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:04:39,800 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:04:39,800 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 51 [2021-11-25 19:04:39,828 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:04:39,829 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 104 treesize of output 107 [2021-11-25 19:04:39,854 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 23 [2021-11-25 19:04:41,130 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:04:41,131 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 50 [2021-11-25 19:04:41,136 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:04:41,142 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2021-11-25 19:04:41,188 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 24 [2021-11-25 19:04:41,195 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2021-11-25 19:04:41,250 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-25 19:04:41,251 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 23 [2021-11-25 19:04:41,905 WARN L838 $PredicateComparison]: unable to prove that (or (not (bvsgt |c_ULTIMATE.start_main_~i~0#1| (_ bv4294967295 32))) (and (= |c_ULTIMATE.start_main_~len~0#1| (bvadd |c_ULTIMATE.start_main_~i~0#1| (_ bv1 32))) (forall ((v_ArrVal_2164 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2172 (_ BitVec 32))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|))) (= .cse0 (select (store (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_2164) |c_ULTIMATE.start_main_~s~0#1.base|) (bvadd |c_ULTIMATE.start_main_~s~0#1.offset| (_ bv4 32)) v_ArrVal_2172) |c_ULTIMATE.start_main_~s~0#1.offset|)))) (forall ((v_ArrVal_2164 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2172 (_ BitVec 32))) (not (= |c_ULTIMATE.start_main_~s~0#1.base| (select (store (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|) v_ArrVal_2164) |c_ULTIMATE.start_main_~s~0#1.base|) (bvadd |c_ULTIMATE.start_main_~s~0#1.offset| (_ bv4 32)) v_ArrVal_2172) |c_ULTIMATE.start_main_~s~0#1.offset|))))) (not (bvsgt (bvadd (_ bv4294967295 32) |c_ULTIMATE.start_main_~len~0#1|) (_ bv4294967295 32)))) is different from false [2021-11-25 19:04:43,813 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:04:43,813 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 35 [2021-11-25 19:04:43,819 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 161 treesize of output 149 [2021-11-25 19:04:43,823 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:04:43,826 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 137 treesize of output 127 [2021-11-25 19:04:43,833 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 138 treesize of output 126 [2021-11-25 19:04:43,845 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 22 [2021-11-25 19:04:43,865 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 22 [2021-11-25 19:04:43,905 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-25 19:04:43,905 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 1 [2021-11-25 19:04:46,221 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2021-11-25 19:04:46,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1436579504] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:04:46,222 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-25 19:04:46,222 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 29, 29, 29, 30, 30] total 123 [2021-11-25 19:04:46,222 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705612911] [2021-11-25 19:04:46,222 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-25 19:04:46,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 123 states [2021-11-25 19:04:46,223 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:04:46,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 123 interpolants. [2021-11-25 19:04:46,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=455, Invalid=9877, Unknown=54, NotChecked=4620, Total=15006 [2021-11-25 19:04:46,231 INFO L87 Difference]: Start difference. First operand 135 states and 154 transitions. Second operand has 123 states, 119 states have (on average 1.6638655462184875) internal successors, (198), 112 states have internal predecessors, (198), 8 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2021-11-25 19:04:57,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:04:57,134 INFO L93 Difference]: Finished difference Result 135 states and 153 transitions. [2021-11-25 19:04:57,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-25 19:04:57,136 INFO L78 Accepts]: Start accepts. Automaton has has 123 states, 119 states have (on average 1.6638655462184875) internal successors, (198), 112 states have internal predecessors, (198), 8 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) Word has length 52 [2021-11-25 19:04:57,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:04:57,137 INFO L225 Difference]: With dead ends: 135 [2021-11-25 19:04:57,138 INFO L226 Difference]: Without dead ends: 135 [2021-11-25 19:04:57,141 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 167 SyntacticMatches, 25 SemanticMatches, 141 ConstructedPredicates, 21 IntricatePredicates, 0 DeprecatedPredicates, 4859 ImplicationChecksByTransitivity, 29.9s TimeCoverageRelationStatistics Valid=782, Invalid=14010, Unknown=54, NotChecked=5460, Total=20306 [2021-11-25 19:04:57,142 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 213 mSDsluCounter, 1947 mSDsCounter, 0 mSdLazyCounter, 1199 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 1992 SdHoareTripleChecker+Invalid, 3153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 1199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1891 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:04:57,142 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [214 Valid, 1992 Invalid, 3153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 1199 Invalid, 0 Unknown, 1891 Unchecked, 3.1s Time] [2021-11-25 19:04:57,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2021-11-25 19:04:57,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2021-11-25 19:04:57,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 115 states have (on average 1.2956521739130435) internal successors, (149), 130 states have internal predecessors, (149), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-25 19:04:57,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 153 transitions. [2021-11-25 19:04:57,148 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 153 transitions. Word has length 52 [2021-11-25 19:04:57,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:04:57,149 INFO L470 AbstractCegarLoop]: Abstraction has 135 states and 153 transitions. [2021-11-25 19:04:57,149 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 123 states, 119 states have (on average 1.6638655462184875) internal successors, (198), 112 states have internal predecessors, (198), 8 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2021-11-25 19:04:57,150 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 153 transitions. [2021-11-25 19:04:57,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-25 19:04:57,150 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:04:57,151 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:04:57,156 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (47)] Forceful destruction successful, exit code 0 [2021-11-25 19:04:57,382 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2021-11-25 19:04:57,567 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (46)] Ended with exit code 0 [2021-11-25 19:04:57,756 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt,48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:04:57,756 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 24 more)] === [2021-11-25 19:04:57,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:04:57,756 INFO L85 PathProgramCache]: Analyzing trace with hash -368684005, now seen corresponding path program 1 times [2021-11-25 19:04:57,757 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:04:57,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1415385700] [2021-11-25 19:04:57,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:04:57,757 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:04:57,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:04:57,758 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:04:57,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (49)] Waiting until timeout for monitored process [2021-11-25 19:04:58,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:04:58,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-25 19:04:58,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:04:58,548 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-11-25 19:04:59,093 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-25 19:04:59,261 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-25 19:04:59,262 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:04:59,851 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 40 [2021-11-25 19:05:00,236 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-25 19:05:00,237 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:05:00,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1415385700] [2021-11-25 19:05:00,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1415385700] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:05:00,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [439567635] [2021-11-25 19:05:00,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:05:00,237 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 19:05:00,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 19:05:00,238 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 19:05:00,241 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (50)] Waiting until timeout for monitored process [2021-11-25 19:05:00,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:05:00,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 38 conjunts are in the unsatisfiable core [2021-11-25 19:05:00,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:05:00,951 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-11-25 19:05:01,280 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-25 19:05:01,312 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-25 19:05:01,313 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:05:01,477 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 40 [2021-11-25 19:05:01,663 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-25 19:05:01,663 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [439567635] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:05:01,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [873644580] [2021-11-25 19:05:01,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:05:01,664 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:05:01,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:05:01,665 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:05:01,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2021-11-25 19:05:01,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:05:01,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 42 conjunts are in the unsatisfiable core [2021-11-25 19:05:01,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:05:02,481 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-11-25 19:05:02,941 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-25 19:05:02,966 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 16 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-25 19:05:02,966 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:05:03,910 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 40 [2021-11-25 19:05:04,420 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-25 19:05:04,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [873644580] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:05:04,421 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-25 19:05:04,421 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 12, 19, 12, 22, 12] total 38 [2021-11-25 19:05:04,421 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699772656] [2021-11-25 19:05:04,421 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-25 19:05:04,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2021-11-25 19:05:04,422 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:05:04,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-11-25 19:05:04,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=1275, Unknown=0, NotChecked=0, Total=1406 [2021-11-25 19:05:04,424 INFO L87 Difference]: Start difference. First operand 135 states and 153 transitions. Second operand has 38 states, 38 states have (on average 3.4473684210526314) internal successors, (131), 37 states have internal predecessors, (131), 3 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2021-11-25 19:05:11,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:05:11,202 INFO L93 Difference]: Finished difference Result 341 states and 377 transitions. [2021-11-25 19:05:11,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-11-25 19:05:11,204 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.4473684210526314) internal successors, (131), 37 states have internal predecessors, (131), 3 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 59 [2021-11-25 19:05:11,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:05:11,206 INFO L225 Difference]: With dead ends: 341 [2021-11-25 19:05:11,206 INFO L226 Difference]: Without dead ends: 341 [2021-11-25 19:05:11,212 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 389 GetRequests, 315 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1073 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=1066, Invalid=4634, Unknown=0, NotChecked=0, Total=5700 [2021-11-25 19:05:11,213 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 2615 mSDsluCounter, 822 mSDsCounter, 0 mSdLazyCounter, 861 mSolverCounterSat, 266 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2616 SdHoareTripleChecker+Valid, 872 SdHoareTripleChecker+Invalid, 1127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 266 IncrementalHoareTripleChecker+Valid, 861 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-11-25 19:05:11,214 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2616 Valid, 872 Invalid, 1127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [266 Valid, 861 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-11-25 19:05:11,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2021-11-25 19:05:11,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 140. [2021-11-25 19:05:11,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 120 states have (on average 1.2666666666666666) internal successors, (152), 135 states have internal predecessors, (152), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-25 19:05:11,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 156 transitions. [2021-11-25 19:05:11,220 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 156 transitions. Word has length 59 [2021-11-25 19:05:11,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:05:11,221 INFO L470 AbstractCegarLoop]: Abstraction has 140 states and 156 transitions. [2021-11-25 19:05:11,221 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.4473684210526314) internal successors, (131), 37 states have internal predecessors, (131), 3 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2021-11-25 19:05:11,221 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 156 transitions. [2021-11-25 19:05:11,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-25 19:05:11,222 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:05:11,222 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:05:11,239 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (49)] Forceful destruction successful, exit code 0 [2021-11-25 19:05:11,456 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0 [2021-11-25 19:05:11,639 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (50)] Ended with exit code 0 [2021-11-25 19:05:11,836 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3,51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt [2021-11-25 19:05:11,836 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 24 more)] === [2021-11-25 19:05:11,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:05:11,836 INFO L85 PathProgramCache]: Analyzing trace with hash 424234897, now seen corresponding path program 1 times [2021-11-25 19:05:11,837 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:05:11,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1908229575] [2021-11-25 19:05:11,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:05:11,837 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:05:11,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:05:11,838 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:05:11,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (52)] Waiting until timeout for monitored process [2021-11-25 19:05:12,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:05:12,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-25 19:05:12,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:05:12,119 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 19:05:13,024 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-25 19:05:13,024 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:05:13,024 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:05:13,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1908229575] [2021-11-25 19:05:13,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1908229575] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:05:13,024 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:05:13,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-25 19:05:13,025 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842484588] [2021-11-25 19:05:13,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:05:13,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-25 19:05:13,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:05:13,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-25 19:05:13,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-11-25 19:05:13,026 INFO L87 Difference]: Start difference. First operand 140 states and 156 transitions. Second operand has 10 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-25 19:05:13,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:05:13,817 INFO L93 Difference]: Finished difference Result 158 states and 174 transitions. [2021-11-25 19:05:13,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-25 19:05:13,817 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 63 [2021-11-25 19:05:13,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:05:13,818 INFO L225 Difference]: With dead ends: 158 [2021-11-25 19:05:13,818 INFO L226 Difference]: Without dead ends: 158 [2021-11-25 19:05:13,819 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 21 SyntacticMatches, 33 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2021-11-25 19:05:13,820 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 210 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-25 19:05:13,820 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [210 Valid, 251 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-25 19:05:13,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-11-25 19:05:13,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 143. [2021-11-25 19:05:13,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 124 states have (on average 1.2741935483870968) internal successors, (158), 138 states have internal predecessors, (158), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-25 19:05:13,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 162 transitions. [2021-11-25 19:05:13,826 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 162 transitions. Word has length 63 [2021-11-25 19:05:13,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:05:13,827 INFO L470 AbstractCegarLoop]: Abstraction has 143 states and 162 transitions. [2021-11-25 19:05:13,827 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-25 19:05:13,827 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 162 transitions. [2021-11-25 19:05:13,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-25 19:05:13,828 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:05:13,828 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:05:13,860 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (52)] Forceful destruction successful, exit code 0 [2021-11-25 19:05:14,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:05:14,043 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 24 more)] === [2021-11-25 19:05:14,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:05:14,044 INFO L85 PathProgramCache]: Analyzing trace with hash 424234898, now seen corresponding path program 1 times [2021-11-25 19:05:14,044 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:05:14,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1806419194] [2021-11-25 19:05:14,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:05:14,045 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:05:14,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:05:14,046 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:05:14,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (53)] Waiting until timeout for monitored process [2021-11-25 19:05:14,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:05:14,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-25 19:05:14,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:05:14,376 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 19:05:14,946 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-25 19:05:14,946 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:05:14,946 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:05:14,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1806419194] [2021-11-25 19:05:14,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1806419194] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:05:14,947 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:05:14,947 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-25 19:05:14,947 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457714768] [2021-11-25 19:05:14,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:05:14,948 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-25 19:05:14,948 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:05:14,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-25 19:05:14,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-11-25 19:05:14,949 INFO L87 Difference]: Start difference. First operand 143 states and 162 transitions. Second operand has 10 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-25 19:05:15,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:05:15,729 INFO L93 Difference]: Finished difference Result 141 states and 159 transitions. [2021-11-25 19:05:15,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-25 19:05:15,730 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 63 [2021-11-25 19:05:15,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:05:15,732 INFO L225 Difference]: With dead ends: 141 [2021-11-25 19:05:15,732 INFO L226 Difference]: Without dead ends: 141 [2021-11-25 19:05:15,732 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2021-11-25 19:05:15,733 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 215 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 19:05:15,734 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [215 Valid, 196 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-25 19:05:15,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2021-11-25 19:05:15,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2021-11-25 19:05:15,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 124 states have (on average 1.25) internal successors, (155), 136 states have internal predecessors, (155), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-25 19:05:15,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 159 transitions. [2021-11-25 19:05:15,739 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 159 transitions. Word has length 63 [2021-11-25 19:05:15,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:05:15,740 INFO L470 AbstractCegarLoop]: Abstraction has 141 states and 159 transitions. [2021-11-25 19:05:15,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-25 19:05:15,740 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 159 transitions. [2021-11-25 19:05:15,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-25 19:05:15,741 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:05:15,742 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:05:15,769 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (53)] Ended with exit code 0 [2021-11-25 19:05:15,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:05:15,955 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 24 more)] === [2021-11-25 19:05:15,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:05:15,956 INFO L85 PathProgramCache]: Analyzing trace with hash 266413795, now seen corresponding path program 1 times [2021-11-25 19:05:15,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:05:15,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1761245004] [2021-11-25 19:05:15,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:05:15,956 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:05:15,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:05:15,957 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:05:15,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (54)] Waiting until timeout for monitored process [2021-11-25 19:05:16,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:05:16,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-25 19:05:16,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:05:16,531 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-25 19:05:16,531 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:05:16,531 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:05:16,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1761245004] [2021-11-25 19:05:16,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1761245004] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:05:16,531 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:05:16,532 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 19:05:16,532 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536903541] [2021-11-25 19:05:16,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:05:16,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-25 19:05:16,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:05:16,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-25 19:05:16,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-11-25 19:05:16,534 INFO L87 Difference]: Start difference. First operand 141 states and 159 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-25 19:05:16,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:05:16,983 INFO L93 Difference]: Finished difference Result 141 states and 158 transitions. [2021-11-25 19:05:16,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-25 19:05:16,984 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 64 [2021-11-25 19:05:16,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:05:16,985 INFO L225 Difference]: With dead ends: 141 [2021-11-25 19:05:16,985 INFO L226 Difference]: Without dead ends: 141 [2021-11-25 19:05:16,985 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2021-11-25 19:05:16,986 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 211 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 19:05:16,986 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [211 Valid, 268 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-25 19:05:16,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2021-11-25 19:05:16,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2021-11-25 19:05:16,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 124 states have (on average 1.2419354838709677) internal successors, (154), 136 states have internal predecessors, (154), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-25 19:05:16,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 158 transitions. [2021-11-25 19:05:16,992 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 158 transitions. Word has length 64 [2021-11-25 19:05:16,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:05:16,993 INFO L470 AbstractCegarLoop]: Abstraction has 141 states and 158 transitions. [2021-11-25 19:05:16,993 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-25 19:05:16,993 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 158 transitions. [2021-11-25 19:05:16,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-25 19:05:16,994 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:05:16,994 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:05:17,021 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (54)] Ended with exit code 0 [2021-11-25 19:05:17,207 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:05:17,207 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 24 more)] === [2021-11-25 19:05:17,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:05:17,208 INFO L85 PathProgramCache]: Analyzing trace with hash -1706854879, now seen corresponding path program 1 times [2021-11-25 19:05:17,208 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:05:17,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [695169706] [2021-11-25 19:05:17,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:05:17,208 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:05:17,209 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:05:17,209 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:05:17,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (55)] Waiting until timeout for monitored process [2021-11-25 19:05:17,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:05:17,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-25 19:05:17,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:05:17,756 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2021-11-25 19:05:17,813 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-25 19:05:17,813 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:05:17,980 INFO L354 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2021-11-25 19:05:17,980 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 23 [2021-11-25 19:05:18,020 INFO L354 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2021-11-25 19:05:18,020 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-11-25 19:05:18,086 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-25 19:05:18,087 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:05:18,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [695169706] [2021-11-25 19:05:18,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [695169706] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:05:18,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2081671246] [2021-11-25 19:05:18,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:05:18,087 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 19:05:18,087 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 19:05:18,088 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 19:05:18,089 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (56)] Waiting until timeout for monitored process [2021-11-25 19:05:18,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:05:18,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 30 conjunts are in the unsatisfiable core [2021-11-25 19:05:18,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:05:19,417 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2021-11-25 19:05:19,429 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-25 19:05:19,429 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:05:19,589 INFO L354 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2021-11-25 19:05:19,589 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 23 [2021-11-25 19:05:19,627 INFO L354 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2021-11-25 19:05:19,628 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-11-25 19:05:19,745 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-25 19:05:19,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2081671246] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:05:19,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [30477937] [2021-11-25 19:05:19,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:05:19,746 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:05:19,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:05:19,747 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:05:19,749 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2021-11-25 19:05:19,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:05:19,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-25 19:05:19,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:05:20,180 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2021-11-25 19:05:20,191 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-25 19:05:20,192 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:05:20,361 INFO L354 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2021-11-25 19:05:20,361 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 23 [2021-11-25 19:05:20,400 INFO L354 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2021-11-25 19:05:20,401 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-11-25 19:05:20,468 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-25 19:05:20,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [30477937] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:05:20,468 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-25 19:05:20,468 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 15, 8, 8, 8] total 20 [2021-11-25 19:05:20,468 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765805313] [2021-11-25 19:05:20,468 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-25 19:05:20,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-25 19:05:20,469 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:05:20,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-25 19:05:20,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=372, Unknown=0, NotChecked=0, Total=420 [2021-11-25 19:05:20,470 INFO L87 Difference]: Start difference. First operand 141 states and 158 transitions. Second operand has 21 states, 20 states have (on average 4.35) internal successors, (87), 20 states have internal predecessors, (87), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-25 19:05:23,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:05:23,070 INFO L93 Difference]: Finished difference Result 237 states and 258 transitions. [2021-11-25 19:05:23,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-25 19:05:23,071 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 4.35) internal successors, (87), 20 states have internal predecessors, (87), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 66 [2021-11-25 19:05:23,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:05:23,073 INFO L225 Difference]: With dead ends: 237 [2021-11-25 19:05:23,073 INFO L226 Difference]: Without dead ends: 237 [2021-11-25 19:05:23,074 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 360 SyntacticMatches, 12 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 296 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=381, Invalid=1511, Unknown=0, NotChecked=0, Total=1892 [2021-11-25 19:05:23,075 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 927 mSDsluCounter, 559 mSDsCounter, 0 mSdLazyCounter, 650 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 927 SdHoareTripleChecker+Valid, 614 SdHoareTripleChecker+Invalid, 737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 650 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-25 19:05:23,075 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [927 Valid, 614 Invalid, 737 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 650 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-11-25 19:05:23,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2021-11-25 19:05:23,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 141. [2021-11-25 19:05:23,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 125 states have (on average 1.24) internal successors, (155), 136 states have internal predecessors, (155), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-25 19:05:23,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 159 transitions. [2021-11-25 19:05:23,082 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 159 transitions. Word has length 66 [2021-11-25 19:05:23,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:05:23,082 INFO L470 AbstractCegarLoop]: Abstraction has 141 states and 159 transitions. [2021-11-25 19:05:23,083 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 4.35) internal successors, (87), 20 states have internal predecessors, (87), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-25 19:05:23,083 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 159 transitions. [2021-11-25 19:05:23,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-25 19:05:23,084 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:05:23,084 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:05:23,127 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Ended with exit code 0 [2021-11-25 19:05:23,311 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (56)] Ended with exit code 0 [2021-11-25 19:05:23,518 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (55)] Ended with exit code 0 [2021-11-25 19:05:23,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt,55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:05:23,708 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 24 more)] === [2021-11-25 19:05:23,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:05:23,708 INFO L85 PathProgramCache]: Analyzing trace with hash -1706854878, now seen corresponding path program 1 times [2021-11-25 19:05:23,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:05:23,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [901577033] [2021-11-25 19:05:23,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:05:23,709 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:05:23,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:05:23,710 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:05:23,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (58)] Waiting until timeout for monitored process [2021-11-25 19:05:24,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:05:24,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 72 conjunts are in the unsatisfiable core [2021-11-25 19:05:24,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:05:24,197 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 19:05:24,213 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 19:05:24,714 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 19:05:24,715 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2021-11-25 19:05:24,747 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-25 19:05:24,748 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 19 [2021-11-25 19:05:24,944 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 19:05:24,956 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 19:05:25,170 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 19:05:25,171 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 37 [2021-11-25 19:05:25,176 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2021-11-25 19:05:25,869 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 19:05:25,870 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 37 [2021-11-25 19:05:25,875 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2021-11-25 19:05:25,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:05:25,998 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 26 [2021-11-25 19:05:26,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:05:26,027 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-25 19:05:26,811 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-25 19:05:26,814 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-25 19:05:26,985 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-25 19:05:26,985 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:05:29,403 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_2710 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2711 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_circular_update_at_~head#1.base| v_ArrVal_2711) |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_update_at_~head#1.base| v_ArrVal_2710) |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|)))) (forall ((v_ArrVal_2711 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_circular_update_at_~head#1.base| v_ArrVal_2711) |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|))) (bvule .cse0 (bvadd (_ bv4 32) .cse0))))) is different from false [2021-11-25 19:05:29,464 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_2711 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_circular_update_at_#t~mem12#1.base| v_ArrVal_2711) |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|))) (bvule .cse0 (bvadd (_ bv4 32) .cse0)))) (forall ((v_ArrVal_2710 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2711 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_circular_update_at_#t~mem12#1.base| v_ArrVal_2711) |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_update_at_#t~mem12#1.base| v_ArrVal_2710) |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|))))) is different from false [2021-11-25 19:05:29,506 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_2711 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_update_at_~head#1.base|) |c_ULTIMATE.start_sll_circular_update_at_~head#1.offset|) v_ArrVal_2711) |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|))) (bvule .cse0 (bvadd .cse0 (_ bv4 32))))) (forall ((v_ArrVal_2710 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2711 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_update_at_~head#1.base|) |c_ULTIMATE.start_sll_circular_update_at_~head#1.offset|))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_2711) |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|) (_ bv4 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_2710) |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|)))))) is different from false [2021-11-25 19:05:29,567 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_2711 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|) v_ArrVal_2711) |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|))) (bvule .cse0 (bvadd .cse0 (_ bv4 32))))) (forall ((v_ArrVal_2710 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2711 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_2711) |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|) (_ bv4 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_2710) |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|)))))) is different from false [2021-11-25 19:05:29,602 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_2711 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_create_#res#1.base|) |c_ULTIMATE.start_sll_circular_create_#res#1.offset|) v_ArrVal_2711) |c_ULTIMATE.start_sll_circular_create_#res#1.base|) |c_ULTIMATE.start_sll_circular_create_#res#1.offset|))) (bvule .cse0 (bvadd (_ bv4 32) .cse0)))) (forall ((v_ArrVal_2710 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2711 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_create_#res#1.base|) |c_ULTIMATE.start_sll_circular_create_#res#1.offset|))) (bvule (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_2711) |c_ULTIMATE.start_sll_circular_create_#res#1.base|) |c_ULTIMATE.start_sll_circular_create_#res#1.offset|)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_2710) |c_ULTIMATE.start_sll_circular_create_#res#1.base|) |c_ULTIMATE.start_sll_circular_create_#res#1.offset|)))))) is different from false [2021-11-25 19:05:29,642 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_2711 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|) v_ArrVal_2711) |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|))) (bvule .cse0 (bvadd (_ bv4 32) .cse0)))) (forall ((v_ArrVal_2710 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2711 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|))) (bvule (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_2711) |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_2710) |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|)))))) is different from false [2021-11-25 19:05:29,753 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_2708 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2709 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2711 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_2709) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_2708) |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|) v_ArrVal_2711) |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|))) (bvule .cse0 (bvadd (_ bv4 32) .cse0)))) (forall ((v_ArrVal_2708 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2709 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2710 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2711 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_2708))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|))) (bvule (bvadd (_ bv4 32) (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_2709) .cse1 v_ArrVal_2711) |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|)) (select |c_#length| (select (select (store .cse2 .cse1 v_ArrVal_2710) |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|))))))) is different from false [2021-11-25 19:05:29,830 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_2708 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2709 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2710 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2711 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_2708))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.offset|))) (bvule (bvadd (_ bv4 32) (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_2709) .cse0 v_ArrVal_2711) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.offset|)) (select |c_#length| (select (select (store .cse1 .cse0 v_ArrVal_2710) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.offset|)))))) (forall ((v_ArrVal_2708 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2709 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2711 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_2709) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_2708) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.offset|) v_ArrVal_2711) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.offset|))) (bvule .cse2 (bvadd (_ bv4 32) .cse2))))) is different from false [2021-11-25 19:05:29,853 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:05:29,853 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 74 [2021-11-25 19:05:29,866 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:05:29,866 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 50 [2021-11-25 19:05:29,872 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 334 treesize of output 290 [2021-11-25 19:05:29,879 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1450 treesize of output 1382 [2021-11-25 19:05:29,895 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1378 treesize of output 1314 [2021-11-25 19:05:29,905 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1314 treesize of output 1250 [2021-11-25 19:05:29,915 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1250 treesize of output 1162 [2021-11-25 19:05:29,924 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1162 treesize of output 1130 [2021-11-25 19:06:57,078 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:06:57,079 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 64 [2021-11-25 19:06:57,109 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:06:57,110 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 48 [2021-11-25 19:06:57,117 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 68 [2021-11-25 19:06:57,123 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 250 treesize of output 222 [2021-11-25 19:06:57,131 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 218 treesize of output 194 [2021-11-25 19:06:57,137 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 194 treesize of output 182 [2021-11-25 19:06:57,181 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 126 treesize of output 114 [2021-11-25 19:07:01,076 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:07:01,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [901577033] [2021-11-25 19:07:01,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [901577033] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:07:01,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1280079548] [2021-11-25 19:07:01,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:07:01,078 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 19:07:01,078 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 19:07:01,079 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 19:07:01,080 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (59)] Waiting until timeout for monitored process [2021-11-25 19:07:01,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:07:01,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 72 conjunts are in the unsatisfiable core [2021-11-25 19:07:01,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:07:01,771 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 19:07:01,782 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 19:07:02,065 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 19:07:02,066 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2021-11-25 19:07:02,091 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-25 19:07:02,092 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 21 [2021-11-25 19:07:02,139 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 19:07:02,148 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 19:07:02,252 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 19:07:02,252 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 37 [2021-11-25 19:07:02,260 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2021-11-25 19:07:02,548 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 19:07:02,549 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 37 [2021-11-25 19:07:02,558 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2021-11-25 19:07:02,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:07:02,722 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 26 [2021-11-25 19:07:02,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:07:02,744 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-25 19:07:03,250 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-25 19:07:03,254 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-25 19:07:03,278 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-25 19:07:03,278 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:07:05,025 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_2780 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2781 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_circular_update_at_~head#1.base| v_ArrVal_2781) |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_update_at_~head#1.base| v_ArrVal_2780) |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|)))) (forall ((v_ArrVal_2781 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_circular_update_at_~head#1.base| v_ArrVal_2781) |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|))) (bvule .cse0 (bvadd (_ bv4 32) .cse0))))) is different from false [2021-11-25 19:07:05,077 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_2780 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2781 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_circular_update_at_#t~mem12#1.base| v_ArrVal_2781) |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_update_at_#t~mem12#1.base| v_ArrVal_2780) |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|)))) (forall ((v_ArrVal_2781 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_circular_update_at_#t~mem12#1.base| v_ArrVal_2781) |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|))) (bvule .cse0 (bvadd (_ bv4 32) .cse0))))) is different from false [2021-11-25 19:07:05,119 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_2780 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2781 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_update_at_~head#1.base|) |c_ULTIMATE.start_sll_circular_update_at_~head#1.offset|))) (bvule (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_2781) |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_2780) |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|))))) (forall ((v_ArrVal_2781 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$.offset| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_update_at_~head#1.base|) |c_ULTIMATE.start_sll_circular_update_at_~head#1.offset|) v_ArrVal_2781) |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|))) (bvule .cse1 (bvadd (_ bv4 32) .cse1))))) is different from false [2021-11-25 19:07:05,186 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_2780 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2781 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|))) (bvule (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_2781) |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_2780) |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|))))) (forall ((v_ArrVal_2781 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$.offset| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|) v_ArrVal_2781) |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|))) (bvule .cse1 (bvadd (_ bv4 32) .cse1))))) is different from false [2021-11-25 19:07:05,224 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_2780 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2781 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_create_#res#1.base|) |c_ULTIMATE.start_sll_circular_create_#res#1.offset|))) (bvule (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_2781) |c_ULTIMATE.start_sll_circular_create_#res#1.base|) |c_ULTIMATE.start_sll_circular_create_#res#1.offset|)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_2780) |c_ULTIMATE.start_sll_circular_create_#res#1.base|) |c_ULTIMATE.start_sll_circular_create_#res#1.offset|))))) (forall ((v_ArrVal_2781 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$.offset| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_create_#res#1.base|) |c_ULTIMATE.start_sll_circular_create_#res#1.offset|) v_ArrVal_2781) |c_ULTIMATE.start_sll_circular_create_#res#1.base|) |c_ULTIMATE.start_sll_circular_create_#res#1.offset|))) (bvule .cse1 (bvadd (_ bv4 32) .cse1))))) is different from false [2021-11-25 19:07:05,259 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_2780 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2781 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|))) (bvule (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_2781) |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_2780) |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|))))) (forall ((v_ArrVal_2781 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$.offset| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|) v_ArrVal_2781) |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|))) (bvule .cse1 (bvadd (_ bv4 32) .cse1))))) is different from false [2021-11-25 19:07:05,342 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_2780 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2781 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2778 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2779 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_2778))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|))) (bvule (bvadd (_ bv4 32) (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_2779) .cse0 v_ArrVal_2781) |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|)) (select |c_#length| (select (select (store .cse1 .cse0 v_ArrVal_2780) |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|)))))) (forall ((v_ArrVal_2781 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2778 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2779 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_2779) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_2778) |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|) v_ArrVal_2781) |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|))) (bvule .cse2 (bvadd (_ bv4 32) .cse2))))) is different from false [2021-11-25 19:07:05,414 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_2780 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2781 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2778 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2779 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_2778))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.offset|))) (bvule (bvadd (_ bv4 32) (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_2779) .cse0 v_ArrVal_2781) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.offset|)) (select |c_#length| (select (select (store .cse1 .cse0 v_ArrVal_2780) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.offset|)))))) (forall ((v_ArrVal_2781 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2778 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2779 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_2779) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_2778) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.offset|) v_ArrVal_2781) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.offset|))) (bvule .cse2 (bvadd (_ bv4 32) .cse2))))) is different from false [2021-11-25 19:07:05,438 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:07:05,438 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 74 [2021-11-25 19:07:05,453 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:07:05,453 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 50 [2021-11-25 19:07:05,459 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 632 treesize of output 556 [2021-11-25 19:07:05,470 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 2200 treesize of output 2100 [2021-11-25 19:07:05,500 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 2096 treesize of output 2000 [2021-11-25 19:07:05,519 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 2000 treesize of output 1952 [2021-11-25 19:07:05,532 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1952 treesize of output 1796 [2021-11-25 19:07:05,544 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1796 treesize of output 1700 [2021-11-25 19:10:24,508 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:10:24,509 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 64 [2021-11-25 19:10:24,523 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:10:24,523 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 48 [2021-11-25 19:10:24,528 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 68 [2021-11-25 19:10:24,533 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 166 treesize of output 146 [2021-11-25 19:10:24,537 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 142 treesize of output 126 [2021-11-25 19:10:24,543 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 126 treesize of output 118 [2021-11-25 19:10:24,571 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 54 [2021-11-25 19:10:25,572 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1280079548] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:10:25,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [216423052] [2021-11-25 19:10:25,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:10:25,573 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:10:25,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:10:25,574 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:10:25,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d4c482-64dd-4ed7-a456-384411900e5f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2021-11-25 19:10:25,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:10:25,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 66 conjunts are in the unsatisfiable core [2021-11-25 19:10:25,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:10:26,656 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 19:10:27,013 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-25 19:10:27,014 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 18 [2021-11-25 19:10:27,328 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 19:10:27,694 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-11-25 19:10:28,818 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-11-25 19:10:28,818 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 37 [2021-11-25 19:10:29,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:10:29,110 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-25 19:10:30,630 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2021-11-25 19:10:30,634 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2021-11-25 19:10:31,069 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-25 19:10:31,069 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:10:32,768 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:10:32,769 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 49 [2021-11-25 19:11:19,985 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:11:19,985 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 228 treesize of output 140 [2021-11-25 19:11:20,071 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:11:20,072 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1786 treesize of output 1642 [2021-11-25 19:11:20,106 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1852 treesize of output 1694 [2021-11-25 19:11:36,425 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 285 treesize of output 251