./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hid--hid-roccat-kovaplus.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hid--hid-roccat-kovaplus.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash e997427d9ea56e1cd2f3b4f214f76f2cbd1227f5579082c63a7e80c81b2ac86e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 02:01:16,437 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 02:01:16,440 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 02:01:16,479 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 02:01:16,480 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 02:01:16,481 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 02:01:16,483 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 02:01:16,486 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 02:01:16,488 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 02:01:16,489 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 02:01:16,490 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 02:01:16,492 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 02:01:16,493 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 02:01:16,494 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 02:01:16,496 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 02:01:16,498 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 02:01:16,499 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 02:01:16,500 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 02:01:16,502 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 02:01:16,505 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 02:01:16,507 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 02:01:16,511 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 02:01:16,512 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 02:01:16,513 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 02:01:16,518 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 02:01:16,518 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 02:01:16,519 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 02:01:16,520 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 02:01:16,520 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 02:01:16,522 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 02:01:16,522 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 02:01:16,523 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 02:01:16,524 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 02:01:16,525 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 02:01:16,526 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 02:01:16,527 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 02:01:16,528 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 02:01:16,528 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 02:01:16,529 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 02:01:16,530 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 02:01:16,531 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 02:01:16,536 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-07 02:01:16,586 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 02:01:16,586 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 02:01:16,588 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 02:01:16,588 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 02:01:16,588 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 02:01:16,588 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 02:01:16,588 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 02:01:16,589 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 02:01:16,589 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 02:01:16,589 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 02:01:16,590 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 02:01:16,590 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 02:01:16,591 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 02:01:16,591 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 02:01:16,591 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 02:01:16,592 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 02:01:16,592 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 02:01:16,592 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 02:01:16,592 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 02:01:16,593 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 02:01:16,593 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 02:01:16,593 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 02:01:16,593 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 02:01:16,593 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 02:01:16,594 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 02:01:16,594 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 02:01:16,594 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 02:01:16,594 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:01:16,595 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 02:01:16,596 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 02:01:16,596 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 02:01:16,597 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 02:01:16,597 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 02:01:16,597 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 02:01:16,597 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 02:01:16,598 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 02:01:16,598 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_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e997427d9ea56e1cd2f3b4f214f76f2cbd1227f5579082c63a7e80c81b2ac86e [2021-11-07 02:01:16,950 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 02:01:16,978 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 02:01:16,981 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 02:01:16,983 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 02:01:16,984 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 02:01:16,985 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hid--hid-roccat-kovaplus.ko-entry_point.cil.out.i [2021-11-07 02:01:17,057 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/data/5fa2c1c72/27375a41853543308b371c26133a9b71/FLAG1dc65d34c [2021-11-07 02:01:18,055 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 02:01:18,055 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hid--hid-roccat-kovaplus.ko-entry_point.cil.out.i [2021-11-07 02:01:18,103 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/data/5fa2c1c72/27375a41853543308b371c26133a9b71/FLAG1dc65d34c [2021-11-07 02:01:18,522 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/data/5fa2c1c72/27375a41853543308b371c26133a9b71 [2021-11-07 02:01:18,525 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 02:01:18,527 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 02:01:18,529 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 02:01:18,529 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 02:01:18,533 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 02:01:18,534 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:01:18" (1/1) ... [2021-11-07 02:01:18,535 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4459aaeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:01:18, skipping insertion in model container [2021-11-07 02:01:18,535 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:01:18" (1/1) ... [2021-11-07 02:01:18,543 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 02:01:18,646 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:01:19,958 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:19,960 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:19,975 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:19,976 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:20,058 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:20,072 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:20,101 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:20,102 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:20,111 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:20,112 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:20,130 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:20,131 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:20,140 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:20,141 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:20,158 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:20,159 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:20,170 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:20,171 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:20,207 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:20,221 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:20,243 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:20,251 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:20,260 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:20,409 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:20,410 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:20,413 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:20,414 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:20,415 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:20,416 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:20,417 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:20,418 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:20,419 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:20,429 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:20,430 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:20,431 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:20,432 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:20,435 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:20,436 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:20,440 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:20,441 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:20,441 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:20,442 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:20,443 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:20,443 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:20,444 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:20,445 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:20,446 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:20,446 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:20,447 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:20,448 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:20,448 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:20,451 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:20,452 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:20,452 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:20,453 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:20,454 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:20,455 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:20,456 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:20,456 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:20,457 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:20,464 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:20,464 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:20,465 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:20,467 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:01:20,548 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hid--hid-roccat-kovaplus.ko-entry_point.cil.out.i[186321,186334] [2021-11-07 02:01:20,756 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:01:20,819 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-07 02:01:20,820 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3312501b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:01:20, skipping insertion in model container [2021-11-07 02:01:20,820 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 02:01:20,821 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 02:01:20,826 INFO L168 Benchmark]: Toolchain (without parser) took 2294.98 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 68.8 MB in the beginning and 59.7 MB in the end (delta: 9.0 MB). Peak memory consumption was 34.4 MB. Max. memory is 16.1 GB. [2021-11-07 02:01:20,827 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 96.5 MB. Free memory is still 73.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 02:01:20,828 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2291.97 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 68.5 MB in the beginning and 59.7 MB in the end (delta: 8.8 MB). Peak memory consumption was 34.4 MB. Max. memory is 16.1 GB. [2021-11-07 02:01:20,831 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 96.5 MB. Free memory is still 73.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 2291.97 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 68.5 MB in the beginning and 59.7 MB in the end (delta: 8.8 MB). Peak memory consumption was 34.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 4228]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. 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_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hid--hid-roccat-kovaplus.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash e997427d9ea56e1cd2f3b4f214f76f2cbd1227f5579082c63a7e80c81b2ac86e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 02:01:23,355 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 02:01:23,358 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 02:01:23,415 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 02:01:23,416 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 02:01:23,417 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 02:01:23,420 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 02:01:23,422 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 02:01:23,425 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 02:01:23,426 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 02:01:23,428 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 02:01:23,429 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 02:01:23,430 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 02:01:23,431 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 02:01:23,433 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 02:01:23,435 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 02:01:23,436 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 02:01:23,437 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 02:01:23,440 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 02:01:23,457 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 02:01:23,461 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 02:01:23,467 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 02:01:23,468 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 02:01:23,472 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 02:01:23,476 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 02:01:23,476 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 02:01:23,476 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 02:01:23,478 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 02:01:23,478 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 02:01:23,480 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 02:01:23,480 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 02:01:23,481 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 02:01:23,482 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 02:01:23,486 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 02:01:23,492 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 02:01:23,492 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 02:01:23,493 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 02:01:23,493 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 02:01:23,494 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 02:01:23,496 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 02:01:23,497 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 02:01:23,503 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-07 02:01:23,555 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 02:01:23,555 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 02:01:23,556 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 02:01:23,557 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 02:01:23,557 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 02:01:23,557 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 02:01:23,557 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 02:01:23,558 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 02:01:23,559 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 02:01:23,560 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 02:01:23,561 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 02:01:23,561 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 02:01:23,562 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 02:01:23,562 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 02:01:23,562 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 02:01:23,562 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 02:01:23,563 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 02:01:23,563 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 02:01:23,563 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 02:01:23,563 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 02:01:23,564 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 02:01:23,564 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 02:01:23,564 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 02:01:23,564 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:01:23,564 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 02:01:23,565 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 02:01:23,565 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 02:01:23,565 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 02:01:23,565 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 02:01:23,566 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 02:01:23,566 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 02:01:23,566 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 02:01:23,566 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_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e997427d9ea56e1cd2f3b4f214f76f2cbd1227f5579082c63a7e80c81b2ac86e [2021-11-07 02:01:23,995 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 02:01:24,032 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 02:01:24,035 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 02:01:24,036 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 02:01:24,037 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 02:01:24,039 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hid--hid-roccat-kovaplus.ko-entry_point.cil.out.i [2021-11-07 02:01:24,132 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/data/917b32bc1/28f89d4b13a044b6b929909d2715318e/FLAGb09cf0b03 [2021-11-07 02:01:25,193 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 02:01:25,196 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hid--hid-roccat-kovaplus.ko-entry_point.cil.out.i [2021-11-07 02:01:25,236 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/data/917b32bc1/28f89d4b13a044b6b929909d2715318e/FLAGb09cf0b03 [2021-11-07 02:01:25,632 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/data/917b32bc1/28f89d4b13a044b6b929909d2715318e [2021-11-07 02:01:25,639 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 02:01:25,642 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 02:01:25,645 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 02:01:25,646 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 02:01:25,650 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 02:01:25,651 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:01:25" (1/1) ... [2021-11-07 02:01:25,652 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d9563a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:01:25, skipping insertion in model container [2021-11-07 02:01:25,652 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:01:25" (1/1) ... [2021-11-07 02:01:25,660 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 02:01:25,830 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:01:27,349 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hid--hid-roccat-kovaplus.ko-entry_point.cil.out.i[186321,186334] [2021-11-07 02:01:27,560 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:01:27,633 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 02:01:27,703 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:01:28,008 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hid--hid-roccat-kovaplus.ko-entry_point.cil.out.i[186321,186334] [2021-11-07 02:01:28,047 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:01:28,082 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 02:01:28,398 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hid--hid-roccat-kovaplus.ko-entry_point.cil.out.i[186321,186334] [2021-11-07 02:01:28,427 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:01:28,594 INFO L208 MainTranslator]: Completed translation [2021-11-07 02:01:28,595 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:01:28 WrapperNode [2021-11-07 02:01:28,595 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 02:01:28,596 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 02:01:28,596 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 02:01:28,597 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 02:01:28,604 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:01:28" (1/1) ... [2021-11-07 02:01:28,702 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:01:28" (1/1) ... [2021-11-07 02:01:29,041 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 02:01:29,042 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 02:01:29,042 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 02:01:29,042 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 02:01:29,052 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:01:28" (1/1) ... [2021-11-07 02:01:29,053 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:01:28" (1/1) ... [2021-11-07 02:01:29,112 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:01:28" (1/1) ... [2021-11-07 02:01:29,121 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:01:28" (1/1) ... [2021-11-07 02:01:29,376 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:01:28" (1/1) ... [2021-11-07 02:01:29,418 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:01:28" (1/1) ... [2021-11-07 02:01:29,437 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:01:28" (1/1) ... [2021-11-07 02:01:29,475 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 02:01:29,476 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 02:01:29,476 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 02:01:29,476 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 02:01:29,477 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:01:28" (1/1) ... [2021-11-07 02:01:29,488 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:01:29,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:01:29,517 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 02:01:29,536 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 02:01:29,574 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-07 02:01:29,574 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-07 02:01:29,574 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 02:01:29,575 INFO L130 BoogieDeclarations]: Found specification of procedure hid_hw_stop [2021-11-07 02:01:29,575 INFO L138 BoogieDeclarations]: Found implementation of procedure hid_hw_stop [2021-11-07 02:01:29,575 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 02:01:29,575 INFO L130 BoogieDeclarations]: Found specification of procedure kovaplus_remove [2021-11-07 02:01:29,575 INFO L138 BoogieDeclarations]: Found implementation of procedure kovaplus_remove [2021-11-07 02:01:29,576 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 02:01:29,576 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-07 02:01:29,576 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 02:01:29,576 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 02:01:29,576 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 02:01:29,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-11-07 02:01:29,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 02:01:29,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-07 02:01:29,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-07 02:01:29,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-07 02:01:29,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-07 02:01:29,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-07 02:01:29,578 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 02:01:29,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 02:01:29,579 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-07 02:01:29,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-07 02:01:29,579 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 02:01:29,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 02:01:58,407 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 02:01:58,408 INFO L299 CfgBuilder]: Removed 1654 assume(true) statements. [2021-11-07 02:01:58,412 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:01:58 BoogieIcfgContainer [2021-11-07 02:01:58,413 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 02:01:58,415 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 02:01:58,415 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 02:01:58,419 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 02:01:58,419 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:01:25" (1/3) ... [2021-11-07 02:01:58,420 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f43e16c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:01:58, skipping insertion in model container [2021-11-07 02:01:58,420 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:01:28" (2/3) ... [2021-11-07 02:01:58,421 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f43e16c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:01:58, skipping insertion in model container [2021-11-07 02:01:58,421 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:01:58" (3/3) ... [2021-11-07 02:01:58,422 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--hid--hid-roccat-kovaplus.ko-entry_point.cil.out.i [2021-11-07 02:01:58,428 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 02:01:58,429 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 43 error locations. [2021-11-07 02:01:58,489 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 02:01:58,495 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 02:01:58,495 INFO L340 AbstractCegarLoop]: Starting to check reachability of 43 error locations. [2021-11-07 02:01:58,548 INFO L276 IsEmpty]: Start isEmpty. Operand has 1419 states, 1366 states have (on average 1.3989751098096632) internal successors, (1911), 1410 states have internal predecessors, (1911), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-07 02:01:58,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2021-11-07 02:01:58,582 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:01:58,583 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:01:58,584 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 40 more)] === [2021-11-07 02:01:58,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:01:58,590 INFO L85 PathProgramCache]: Analyzing trace with hash 1583523391, now seen corresponding path program 1 times [2021-11-07 02:01:58,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:01:58,616 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [404859854] [2021-11-07 02:01:58,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:01:58,618 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:01:58,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:01:58,621 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:01:58,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 02:02:02,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:02:03,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 3646 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 02:02:03,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:02:04,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:02:04,664 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:02:06,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:02:06,175 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:02:06,175 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [404859854] [2021-11-07 02:02:06,176 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [404859854] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:02:06,176 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:02:06,177 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 02:02:06,178 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42033384] [2021-11-07 02:02:06,185 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 02:02:06,186 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:02:06,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 02:02:06,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 02:02:06,205 INFO L87 Difference]: Start difference. First operand has 1419 states, 1366 states have (on average 1.3989751098096632) internal successors, (1911), 1410 states have internal predecessors, (1911), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 2 states, 2 states have (on average 185.5) internal successors, (371), 2 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:02:06,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:02:06,329 INFO L93 Difference]: Finished difference Result 2816 states and 3817 transitions. [2021-11-07 02:02:06,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 02:02:06,331 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 185.5) internal successors, (371), 2 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 371 [2021-11-07 02:02:06,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:02:06,362 INFO L225 Difference]: With dead ends: 2816 [2021-11-07 02:02:06,362 INFO L226 Difference]: Without dead ends: 1368 [2021-11-07 02:02:06,373 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 740 GetRequests, 740 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 02:02:06,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1368 states. [2021-11-07 02:02:06,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1368 to 1368. [2021-11-07 02:02:06,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1368 states, 1325 states have (on average 1.2845283018867923) internal successors, (1702), 1367 states have internal predecessors, (1702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:02:06,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1368 states to 1368 states and 1702 transitions. [2021-11-07 02:02:06,508 INFO L78 Accepts]: Start accepts. Automaton has 1368 states and 1702 transitions. Word has length 371 [2021-11-07 02:02:06,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:02:06,510 INFO L470 AbstractCegarLoop]: Abstraction has 1368 states and 1702 transitions. [2021-11-07 02:02:06,512 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 185.5) internal successors, (371), 2 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:02:06,512 INFO L276 IsEmpty]: Start isEmpty. Operand 1368 states and 1702 transitions. [2021-11-07 02:02:06,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2021-11-07 02:02:06,528 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:02:06,529 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:02:06,636 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-07 02:02:06,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:02:06,751 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 40 more)] === [2021-11-07 02:02:06,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:02:06,753 INFO L85 PathProgramCache]: Analyzing trace with hash 1373804119, now seen corresponding path program 1 times [2021-11-07 02:02:06,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:02:06,756 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [161594348] [2021-11-07 02:02:06,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:02:06,757 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:02:06,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:02:06,758 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:02:06,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 02:02:12,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:02:12,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 3646 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 02:02:12,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:02:13,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:02:13,671 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:02:14,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:02:14,701 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:02:14,701 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [161594348] [2021-11-07 02:02:14,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [161594348] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:02:14,707 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:02:14,708 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 02:02:14,708 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810072284] [2021-11-07 02:02:14,712 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:02:14,713 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:02:14,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:02:14,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:02:14,718 INFO L87 Difference]: Start difference. First operand 1368 states and 1702 transitions. Second operand has 4 states, 4 states have (on average 93.25) internal successors, (373), 4 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:02:16,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:02:16,249 INFO L93 Difference]: Finished difference Result 2491 states and 3218 transitions. [2021-11-07 02:02:16,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:02:16,251 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 93.25) internal successors, (373), 4 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 371 [2021-11-07 02:02:16,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:02:16,261 INFO L225 Difference]: With dead ends: 2491 [2021-11-07 02:02:16,262 INFO L226 Difference]: Without dead ends: 1439 [2021-11-07 02:02:16,264 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 740 GetRequests, 738 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:02:16,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1439 states. [2021-11-07 02:02:16,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1439 to 1439. [2021-11-07 02:02:16,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1439 states, 1396 states have (on average 1.2700573065902578) internal successors, (1773), 1438 states have internal predecessors, (1773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:02:16,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1439 states to 1439 states and 1773 transitions. [2021-11-07 02:02:16,314 INFO L78 Accepts]: Start accepts. Automaton has 1439 states and 1773 transitions. Word has length 371 [2021-11-07 02:02:16,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:02:16,315 INFO L470 AbstractCegarLoop]: Abstraction has 1439 states and 1773 transitions. [2021-11-07 02:02:16,316 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 93.25) internal successors, (373), 4 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:02:16,316 INFO L276 IsEmpty]: Start isEmpty. Operand 1439 states and 1773 transitions. [2021-11-07 02:02:16,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 443 [2021-11-07 02:02:16,327 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:02:16,329 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2021-11-07 02:02:16,428 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 02:02:16,529 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:02:16,530 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 40 more)] === [2021-11-07 02:02:16,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:02:16,531 INFO L85 PathProgramCache]: Analyzing trace with hash -45394323, now seen corresponding path program 1 times [2021-11-07 02:02:16,534 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:02:16,534 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1101945634] [2021-11-07 02:02:16,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:02:16,534 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:02:16,534 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:02:16,535 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:02:16,536 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 02:02:22,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:02:22,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 4001 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 02:02:22,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:02:24,206 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2021-11-07 02:02:24,207 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:02:25,740 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2021-11-07 02:02:25,741 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:02:25,741 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1101945634] [2021-11-07 02:02:25,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1101945634] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:02:25,742 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [523323339] [2021-11-07 02:02:25,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:02:25,742 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:02:25,742 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:02:25,747 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:02:25,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-11-07 02:02:28,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:02:28,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 4001 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:02:28,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:02:29,267 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-11-07 02:02:29,268 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:02:29,973 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-11-07 02:02:29,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [523323339] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:02:29,973 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:02:29,974 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-07 02:02:29,974 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128441850] [2021-11-07 02:02:29,976 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:02:29,976 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:02:29,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:02:29,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:02:29,978 INFO L87 Difference]: Start difference. First operand 1439 states and 1773 transitions. Second operand has 3 states, 3 states have (on average 135.66666666666666) internal successors, (407), 3 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:02:30,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:02:30,412 INFO L93 Difference]: Finished difference Result 3259 states and 4153 transitions. [2021-11-07 02:02:30,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:02:30,414 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 135.66666666666666) internal successors, (407), 3 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 442 [2021-11-07 02:02:30,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:02:30,431 INFO L225 Difference]: With dead ends: 3259 [2021-11-07 02:02:30,432 INFO L226 Difference]: Without dead ends: 2314 [2021-11-07 02:02:30,434 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1764 GetRequests, 1757 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:02:30,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2314 states. [2021-11-07 02:02:30,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2314 to 2182. [2021-11-07 02:02:30,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2182 states, 2139 states have (on average 1.3193080878915382) internal successors, (2822), 2181 states have internal predecessors, (2822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:02:30,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2182 states to 2182 states and 2822 transitions. [2021-11-07 02:02:30,534 INFO L78 Accepts]: Start accepts. Automaton has 2182 states and 2822 transitions. Word has length 442 [2021-11-07 02:02:30,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:02:30,536 INFO L470 AbstractCegarLoop]: Abstraction has 2182 states and 2822 transitions. [2021-11-07 02:02:30,537 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 135.66666666666666) internal successors, (407), 3 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:02:30,537 INFO L276 IsEmpty]: Start isEmpty. Operand 2182 states and 2822 transitions. [2021-11-07 02:02:30,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 443 [2021-11-07 02:02:30,542 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:02:30,543 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2021-11-07 02:02:30,663 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 02:02:30,792 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2021-11-07 02:02:30,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 02:02:30,967 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 40 more)] === [2021-11-07 02:02:30,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:02:30,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1646186143, now seen corresponding path program 1 times [2021-11-07 02:02:30,973 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:02:30,973 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1217606457] [2021-11-07 02:02:30,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:02:30,974 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:02:30,974 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:02:30,976 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:02:30,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 02:02:37,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:02:37,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 3971 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 02:02:37,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:02:39,126 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2021-11-07 02:02:39,126 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:02:40,462 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2021-11-07 02:02:40,463 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:02:40,470 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1217606457] [2021-11-07 02:02:40,472 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1217606457] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:02:40,473 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [943747953] [2021-11-07 02:02:40,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:02:40,473 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:02:40,474 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:02:40,479 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:02:40,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2021-11-07 02:02:43,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:02:43,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 3971 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:02:43,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:02:44,659 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-11-07 02:02:44,663 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:02:45,549 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-11-07 02:02:45,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [943747953] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:02:45,549 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:02:45,550 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-07 02:02:45,554 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218541045] [2021-11-07 02:02:45,555 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:02:45,555 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:02:45,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:02:45,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:02:45,557 INFO L87 Difference]: Start difference. First operand 2182 states and 2822 transitions. Second operand has 3 states, 3 states have (on average 135.66666666666666) internal successors, (407), 3 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:02:45,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:02:45,941 INFO L93 Difference]: Finished difference Result 5501 states and 7320 transitions. [2021-11-07 02:02:45,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:02:45,942 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 135.66666666666666) internal successors, (407), 3 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 442 [2021-11-07 02:02:45,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:02:45,968 INFO L225 Difference]: With dead ends: 5501 [2021-11-07 02:02:45,968 INFO L226 Difference]: Without dead ends: 3813 [2021-11-07 02:02:45,973 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1764 GetRequests, 1757 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:02:45,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3813 states. [2021-11-07 02:02:46,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3813 to 3677. [2021-11-07 02:02:46,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3677 states, 3634 states have (on average 1.3585580627407816) internal successors, (4937), 3676 states have internal predecessors, (4937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:02:46,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3677 states to 3677 states and 4937 transitions. [2021-11-07 02:02:46,130 INFO L78 Accepts]: Start accepts. Automaton has 3677 states and 4937 transitions. Word has length 442 [2021-11-07 02:02:46,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:02:46,131 INFO L470 AbstractCegarLoop]: Abstraction has 3677 states and 4937 transitions. [2021-11-07 02:02:46,132 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 135.66666666666666) internal successors, (407), 3 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:02:46,132 INFO L276 IsEmpty]: Start isEmpty. Operand 3677 states and 4937 transitions. [2021-11-07 02:02:46,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 444 [2021-11-07 02:02:46,136 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:02:46,137 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:02:46,258 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 02:02:46,381 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2021-11-07 02:02:46,559 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 02:02:46,559 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr39ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 40 more)] === [2021-11-07 02:02:46,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:02:46,560 INFO L85 PathProgramCache]: Analyzing trace with hash -226280047, now seen corresponding path program 1 times [2021-11-07 02:02:46,564 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:02:46,564 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [924487326] [2021-11-07 02:02:46,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:02:46,565 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:02:46,565 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:02:46,567 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:02:46,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 02:02:53,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:02:53,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 3923 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 02:02:53,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:02:55,021 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2021-11-07 02:02:55,022 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:02:56,291 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2021-11-07 02:02:56,291 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:02:56,291 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [924487326] [2021-11-07 02:02:56,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [924487326] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:02:56,292 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [663338710] [2021-11-07 02:02:56,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:02:56,292 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:02:56,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:02:56,301 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:02:56,302 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-11-07 02:02:59,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:02:59,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 3923 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:02:59,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:03:02,368 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-11-07 02:03:02,368 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:03:04,957 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-11-07 02:03:04,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [663338710] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:03:04,958 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:03:04,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [5, 5] total 9 [2021-11-07 02:03:04,959 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395915056] [2021-11-07 02:03:04,961 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:03:04,961 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:03:04,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:03:04,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:03:04,962 INFO L87 Difference]: Start difference. First operand 3677 states and 4937 transitions. Second operand has 3 states, 3 states have (on average 136.0) internal successors, (408), 2 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:03:05,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:03:05,075 INFO L93 Difference]: Finished difference Result 3677 states and 4937 transitions. [2021-11-07 02:03:05,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:03:05,076 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 136.0) internal successors, (408), 2 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 443 [2021-11-07 02:03:05,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:03:05,101 INFO L225 Difference]: With dead ends: 3677 [2021-11-07 02:03:05,101 INFO L226 Difference]: Without dead ends: 3675 [2021-11-07 02:03:05,103 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1768 GetRequests, 1761 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:03:05,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3675 states. [2021-11-07 02:03:05,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3675 to 3675. [2021-11-07 02:03:05,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3675 states, 3633 states have (on average 1.3583815028901733) internal successors, (4935), 3674 states have internal predecessors, (4935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:03:05,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3675 states to 3675 states and 4935 transitions. [2021-11-07 02:03:05,290 INFO L78 Accepts]: Start accepts. Automaton has 3675 states and 4935 transitions. Word has length 443 [2021-11-07 02:03:05,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:03:05,291 INFO L470 AbstractCegarLoop]: Abstraction has 3675 states and 4935 transitions. [2021-11-07 02:03:05,292 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.0) internal successors, (408), 2 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:03:05,292 INFO L276 IsEmpty]: Start isEmpty. Operand 3675 states and 4935 transitions. [2021-11-07 02:03:05,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 445 [2021-11-07 02:03:05,336 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:03:05,336 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:03:05,360 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2021-11-07 02:03:05,646 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 02:03:05,759 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:03:05,760 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr40ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 40 more)] === [2021-11-07 02:03:05,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:03:05,761 INFO L85 PathProgramCache]: Analyzing trace with hash 1575263606, now seen corresponding path program 1 times [2021-11-07 02:03:05,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:03:05,764 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1723654695] [2021-11-07 02:03:05,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:03:05,764 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:03:05,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:03:05,765 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:03:05,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 02:03:12,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:03:12,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 3924 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 02:03:12,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:03:14,065 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2021-11-07 02:03:14,065 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:03:15,336 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2021-11-07 02:03:15,336 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:03:15,337 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1723654695] [2021-11-07 02:03:15,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1723654695] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:03:15,338 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1712838058] [2021-11-07 02:03:15,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:03:15,338 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:03:15,338 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:03:15,339 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:03:15,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-11-07 02:03:19,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:03:19,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 3924 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:03:19,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:03:21,779 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-11-07 02:03:21,780 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:03:24,292 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-11-07 02:03:24,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1712838058] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:03:24,292 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:03:24,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [5, 5] total 9 [2021-11-07 02:03:24,294 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215368812] [2021-11-07 02:03:24,295 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:03:24,296 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:03:24,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:03:24,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:03:24,297 INFO L87 Difference]: Start difference. First operand 3675 states and 4935 transitions. Second operand has 3 states, 3 states have (on average 136.33333333333334) internal successors, (409), 2 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:03:24,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:03:24,736 INFO L93 Difference]: Finished difference Result 3675 states and 4935 transitions. [2021-11-07 02:03:24,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:03:24,737 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 136.33333333333334) internal successors, (409), 2 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 444 [2021-11-07 02:03:24,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:03:24,760 INFO L225 Difference]: With dead ends: 3675 [2021-11-07 02:03:24,761 INFO L226 Difference]: Without dead ends: 3635 [2021-11-07 02:03:24,762 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1772 GetRequests, 1765 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:03:24,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3635 states. [2021-11-07 02:03:24,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3635 to 3635. [2021-11-07 02:03:24,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3635 states, 3613 states have (on average 1.3407140880154995) internal successors, (4844), 3634 states have internal predecessors, (4844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:03:24,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3635 states to 3635 states and 4844 transitions. [2021-11-07 02:03:24,932 INFO L78 Accepts]: Start accepts. Automaton has 3635 states and 4844 transitions. Word has length 444 [2021-11-07 02:03:24,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:03:24,934 INFO L470 AbstractCegarLoop]: Abstraction has 3635 states and 4844 transitions. [2021-11-07 02:03:24,934 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.33333333333334) internal successors, (409), 2 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:03:24,934 INFO L276 IsEmpty]: Start isEmpty. Operand 3635 states and 4844 transitions. [2021-11-07 02:03:24,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 446 [2021-11-07 02:03:24,938 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:03:24,939 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:03:25,062 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-07 02:03:25,172 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2021-11-07 02:03:25,356 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 02:03:25,356 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr41ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 40 more)] === [2021-11-07 02:03:25,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:03:25,357 INFO L85 PathProgramCache]: Analyzing trace with hash 1588542011, now seen corresponding path program 1 times [2021-11-07 02:03:25,360 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:03:25,360 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [174834655] [2021-11-07 02:03:25,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:03:25,361 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:03:25,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:03:25,362 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:03:25,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-07 02:03:32,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:03:33,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 3925 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 02:03:33,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:03:34,306 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2021-11-07 02:03:34,306 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:03:35,592 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2021-11-07 02:03:35,592 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:03:35,592 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [174834655] [2021-11-07 02:03:35,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [174834655] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:03:35,592 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1539170165] [2021-11-07 02:03:35,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:03:35,593 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:03:35,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:03:35,595 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:03:35,596 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2021-11-07 02:03:39,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:03:39,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 3925 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:03:39,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:03:42,229 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-11-07 02:03:42,229 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:03:44,610 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-11-07 02:03:44,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1539170165] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:03:44,610 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:03:44,611 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [5, 5] total 9 [2021-11-07 02:03:44,611 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254564091] [2021-11-07 02:03:44,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:03:44,612 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:03:44,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:03:44,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:03:44,614 INFO L87 Difference]: Start difference. First operand 3635 states and 4844 transitions. Second operand has 3 states, 3 states have (on average 136.66666666666666) internal successors, (410), 2 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:03:44,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:03:44,747 INFO L93 Difference]: Finished difference Result 3635 states and 4844 transitions. [2021-11-07 02:03:44,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:03:44,748 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 136.66666666666666) internal successors, (410), 2 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 445 [2021-11-07 02:03:44,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:03:44,772 INFO L225 Difference]: With dead ends: 3635 [2021-11-07 02:03:44,772 INFO L226 Difference]: Without dead ends: 3633 [2021-11-07 02:03:44,775 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1776 GetRequests, 1769 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:03:44,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3633 states. [2021-11-07 02:03:44,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3633 to 3633. [2021-11-07 02:03:44,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3633 states, 3612 states have (on average 1.340531561461794) internal successors, (4842), 3632 states have internal predecessors, (4842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:03:44,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3633 states to 3633 states and 4842 transitions. [2021-11-07 02:03:44,971 INFO L78 Accepts]: Start accepts. Automaton has 3633 states and 4842 transitions. Word has length 445 [2021-11-07 02:03:44,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:03:44,972 INFO L470 AbstractCegarLoop]: Abstraction has 3633 states and 4842 transitions. [2021-11-07 02:03:44,972 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.66666666666666) internal successors, (410), 2 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:03:44,973 INFO L276 IsEmpty]: Start isEmpty. Operand 3633 states and 4842 transitions. [2021-11-07 02:03:44,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 447 [2021-11-07 02:03:44,977 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:03:44,977 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:03:45,006 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2021-11-07 02:03:45,322 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-07 02:03:45,391 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:03:45,391 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr42ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 40 more)] === [2021-11-07 02:03:45,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:03:45,392 INFO L85 PathProgramCache]: Analyzing trace with hash 2000172576, now seen corresponding path program 1 times [2021-11-07 02:03:45,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:03:45,396 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1398807701] [2021-11-07 02:03:45,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:03:45,397 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:03:45,397 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:03:45,399 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:03:45,439 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-07 02:03:53,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:03:53,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 3926 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 02:03:53,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:03:55,087 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2021-11-07 02:03:55,087 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:03:56,398 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2021-11-07 02:03:56,399 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:03:56,399 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1398807701] [2021-11-07 02:03:56,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1398807701] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:03:56,399 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1500966360] [2021-11-07 02:03:56,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:03:56,399 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:03:56,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:03:56,409 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:03:56,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2021-11-07 02:04:01,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:04:01,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 3926 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:04:01,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:04:03,811 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-11-07 02:04:03,811 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:04:06,231 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-11-07 02:04:06,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1500966360] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:04:06,231 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:04:06,232 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [5, 5] total 9 [2021-11-07 02:04:06,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211947335] [2021-11-07 02:04:06,233 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:04:06,233 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:04:06,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:04:06,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:04:06,234 INFO L87 Difference]: Start difference. First operand 3633 states and 4842 transitions. Second operand has 3 states, 3 states have (on average 137.0) internal successors, (411), 2 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:04:06,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:04:06,367 INFO L93 Difference]: Finished difference Result 3633 states and 4842 transitions. [2021-11-07 02:04:06,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:04:06,367 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 137.0) internal successors, (411), 2 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 446 [2021-11-07 02:04:06,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:04:06,390 INFO L225 Difference]: With dead ends: 3633 [2021-11-07 02:04:06,390 INFO L226 Difference]: Without dead ends: 3625 [2021-11-07 02:04:06,393 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1780 GetRequests, 1773 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:04:06,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3625 states. [2021-11-07 02:04:06,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3625 to 3625. [2021-11-07 02:04:06,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3625 states, 3605 states have (on average 1.3389736477115117) internal successors, (4827), 3624 states have internal predecessors, (4827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:04:06,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3625 states to 3625 states and 4827 transitions. [2021-11-07 02:04:06,591 INFO L78 Accepts]: Start accepts. Automaton has 3625 states and 4827 transitions. Word has length 446 [2021-11-07 02:04:06,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:04:06,593 INFO L470 AbstractCegarLoop]: Abstraction has 3625 states and 4827 transitions. [2021-11-07 02:04:06,593 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 137.0) internal successors, (411), 2 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:04:06,593 INFO L276 IsEmpty]: Start isEmpty. Operand 3625 states and 4827 transitions. [2021-11-07 02:04:06,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 451 [2021-11-07 02:04:06,598 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:04:06,599 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:04:06,705 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-07 02:04:06,836 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (15)] Ended with exit code 0 [2021-11-07 02:04:07,015 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 02:04:07,016 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 40 more)] === [2021-11-07 02:04:07,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:04:07,016 INFO L85 PathProgramCache]: Analyzing trace with hash -366816637, now seen corresponding path program 1 times [2021-11-07 02:04:07,019 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:04:07,020 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [685138472] [2021-11-07 02:04:07,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:04:07,020 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:04:07,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:04:07,022 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:04:07,023 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-07 02:04:15,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:04:15,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 4034 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 02:04:15,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:04:17,140 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2021-11-07 02:04:17,140 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:04:18,467 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2021-11-07 02:04:18,467 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:04:18,467 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [685138472] [2021-11-07 02:04:18,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [685138472] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:04:18,468 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1200811224] [2021-11-07 02:04:18,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:04:18,468 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:04:18,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:04:18,469 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:04:18,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2021-11-07 02:04:23,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:04:24,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 4034 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:04:24,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:04:24,969 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-11-07 02:04:24,969 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:04:25,649 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-11-07 02:04:25,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1200811224] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:04:25,650 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:04:25,650 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-07 02:04:25,650 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585005001] [2021-11-07 02:04:25,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:04:25,655 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:04:25,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:04:25,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:04:25,657 INFO L87 Difference]: Start difference. First operand 3625 states and 4827 transitions. Second operand has 3 states, 3 states have (on average 138.33333333333334) internal successors, (415), 3 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:04:26,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:04:26,377 INFO L93 Difference]: Finished difference Result 9664 states and 13116 transitions. [2021-11-07 02:04:26,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:04:26,377 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 138.33333333333334) internal successors, (415), 3 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 450 [2021-11-07 02:04:26,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:04:26,420 INFO L225 Difference]: With dead ends: 9664 [2021-11-07 02:04:26,420 INFO L226 Difference]: Without dead ends: 6533 [2021-11-07 02:04:26,427 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1796 GetRequests, 1789 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:04:26,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6533 states. [2021-11-07 02:04:26,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6533 to 6471. [2021-11-07 02:04:26,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6471 states, 6451 states have (on average 1.3611843125096885) internal successors, (8781), 6470 states have internal predecessors, (8781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:04:26,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6471 states to 6471 states and 8781 transitions. [2021-11-07 02:04:26,975 INFO L78 Accepts]: Start accepts. Automaton has 6471 states and 8781 transitions. Word has length 450 [2021-11-07 02:04:26,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:04:26,976 INFO L470 AbstractCegarLoop]: Abstraction has 6471 states and 8781 transitions. [2021-11-07 02:04:26,977 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 138.33333333333334) internal successors, (415), 3 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:04:26,988 INFO L276 IsEmpty]: Start isEmpty. Operand 6471 states and 8781 transitions. [2021-11-07 02:04:26,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 452 [2021-11-07 02:04:26,993 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:04:26,993 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:04:27,194 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (16)] Forcibly destroying the process [2021-11-07 02:04:27,227 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-07 02:04:27,276 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (17)] Ended with exit code 0 [2021-11-07 02:04:27,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 02:04:27,428 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 40 more)] === [2021-11-07 02:04:27,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:04:27,428 INFO L85 PathProgramCache]: Analyzing trace with hash 720157696, now seen corresponding path program 1 times [2021-11-07 02:04:27,432 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:04:27,432 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1390317446] [2021-11-07 02:04:27,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:04:27,433 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:04:27,433 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:04:27,435 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:04:27,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-07 02:04:36,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:04:37,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 4077 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 02:04:37,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:04:38,367 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2021-11-07 02:04:38,368 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:04:39,657 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2021-11-07 02:04:39,657 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:04:39,657 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1390317446] [2021-11-07 02:04:39,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1390317446] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:04:39,657 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1179774027] [2021-11-07 02:04:39,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:04:39,658 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:04:39,658 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:04:39,659 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:04:39,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2021-11-07 02:04:45,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:04:45,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 4077 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:04:45,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:04:46,630 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-11-07 02:04:46,631 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:04:47,318 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-11-07 02:04:47,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1179774027] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:04:47,318 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:04:47,319 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-07 02:04:47,319 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347390902] [2021-11-07 02:04:47,327 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:04:47,327 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:04:47,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:04:47,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:04:47,328 INFO L87 Difference]: Start difference. First operand 6471 states and 8781 transitions. Second operand has 3 states, 3 states have (on average 138.66666666666666) internal successors, (416), 3 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:04:48,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:04:48,066 INFO L93 Difference]: Finished difference Result 18159 states and 24900 transitions. [2021-11-07 02:04:48,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:04:48,066 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 138.66666666666666) internal successors, (416), 3 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 451 [2021-11-07 02:04:48,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:04:48,110 INFO L225 Difference]: With dead ends: 18159 [2021-11-07 02:04:48,111 INFO L226 Difference]: Without dead ends: 12182 [2021-11-07 02:04:48,124 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1800 GetRequests, 1793 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:04:48,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12182 states. [2021-11-07 02:04:48,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12182 to 12079. [2021-11-07 02:04:48,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12079 states, 12059 states have (on average 1.3736628244464715) internal successors, (16565), 12078 states have internal predecessors, (16565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:04:48,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12079 states to 12079 states and 16565 transitions. [2021-11-07 02:04:48,796 INFO L78 Accepts]: Start accepts. Automaton has 12079 states and 16565 transitions. Word has length 451 [2021-11-07 02:04:48,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:04:48,797 INFO L470 AbstractCegarLoop]: Abstraction has 12079 states and 16565 transitions. [2021-11-07 02:04:48,797 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 138.66666666666666) internal successors, (416), 3 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:04:48,798 INFO L276 IsEmpty]: Start isEmpty. Operand 12079 states and 16565 transitions. [2021-11-07 02:04:48,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 453 [2021-11-07 02:04:48,802 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:04:48,802 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:04:48,931 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-07 02:04:49,046 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (19)] Ended with exit code 0 [2021-11-07 02:04:49,227 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 02:04:49,228 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 40 more)] === [2021-11-07 02:04:49,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:04:49,228 INFO L85 PathProgramCache]: Analyzing trace with hash -412526465, now seen corresponding path program 1 times [2021-11-07 02:04:49,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:04:49,232 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1265475062] [2021-11-07 02:04:49,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:04:49,233 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:04:49,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:04:49,234 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:04:49,252 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-07 02:04:58,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:04:59,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 4079 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 02:04:59,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:05:00,502 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2021-11-07 02:05:00,503 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:05:01,790 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2021-11-07 02:05:01,790 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:05:01,790 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1265475062] [2021-11-07 02:05:01,790 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1265475062] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:05:01,790 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [327830738] [2021-11-07 02:05:01,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:05:01,790 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:05:01,791 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:05:01,791 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:05:01,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2021-11-07 02:05:08,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:05:08,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 4079 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:05:08,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:05:09,268 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-11-07 02:05:09,268 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:05:10,010 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-11-07 02:05:10,010 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [327830738] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:05:10,010 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:05:10,011 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-07 02:05:10,011 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42982884] [2021-11-07 02:05:10,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:05:10,012 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:05:10,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:05:10,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:05:10,013 INFO L87 Difference]: Start difference. First operand 12079 states and 16565 transitions. Second operand has 3 states, 3 states have (on average 139.0) internal successors, (417), 3 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:05:11,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:05:11,203 INFO L93 Difference]: Finished difference Result 34719 states and 47892 transitions. [2021-11-07 02:05:11,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:05:11,204 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 139.0) internal successors, (417), 3 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 452 [2021-11-07 02:05:11,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:05:11,331 INFO L225 Difference]: With dead ends: 34719 [2021-11-07 02:05:11,347 INFO L226 Difference]: Without dead ends: 23134 [2021-11-07 02:05:11,381 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1804 GetRequests, 1797 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:05:11,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23134 states. [2021-11-07 02:05:12,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23134 to 23031. [2021-11-07 02:05:12,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23031 states, 23011 states have (on average 1.3804267524227543) internal successors, (31765), 23030 states have internal predecessors, (31765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:05:12,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23031 states to 23031 states and 31765 transitions. [2021-11-07 02:05:12,690 INFO L78 Accepts]: Start accepts. Automaton has 23031 states and 31765 transitions. Word has length 452 [2021-11-07 02:05:12,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:05:12,691 INFO L470 AbstractCegarLoop]: Abstraction has 23031 states and 31765 transitions. [2021-11-07 02:05:12,691 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 139.0) internal successors, (417), 3 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:05:12,691 INFO L276 IsEmpty]: Start isEmpty. Operand 23031 states and 31765 transitions. [2021-11-07 02:05:12,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 459 [2021-11-07 02:05:12,697 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:05:12,697 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:05:12,729 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (21)] Forceful destruction successful, exit code 0 [2021-11-07 02:05:13,015 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (20)] Ended with exit code 0 [2021-11-07 02:05:13,124 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:05:13,124 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 40 more)] === [2021-11-07 02:05:13,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:05:13,125 INFO L85 PathProgramCache]: Analyzing trace with hash 901809842, now seen corresponding path program 1 times [2021-11-07 02:05:13,128 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:05:13,128 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1059003190] [2021-11-07 02:05:13,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:05:13,128 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:05:13,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:05:13,130 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:05:13,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-07 02:05:23,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:05:23,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 4091 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 02:05:23,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:05:24,793 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2021-11-07 02:05:24,793 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:05:26,120 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2021-11-07 02:05:26,121 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:05:26,121 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1059003190] [2021-11-07 02:05:26,121 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1059003190] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:05:26,121 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1822399558] [2021-11-07 02:05:26,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:05:26,121 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:05:26,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:05:26,122 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:05:26,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2021-11-07 02:05:33,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:05:33,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 4091 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:05:33,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:05:34,327 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-11-07 02:05:34,327 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:05:35,053 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-11-07 02:05:35,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1822399558] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:05:35,054 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:05:35,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-07 02:05:35,054 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517644908] [2021-11-07 02:05:35,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:05:35,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:05:35,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:05:35,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:05:35,056 INFO L87 Difference]: Start difference. First operand 23031 states and 31765 transitions. Second operand has 3 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:05:36,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:05:36,763 INFO L93 Difference]: Finished difference Result 67008 states and 92731 transitions. [2021-11-07 02:05:36,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:05:36,764 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 458 [2021-11-07 02:05:36,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:05:36,892 INFO L225 Difference]: With dead ends: 67008 [2021-11-07 02:05:36,892 INFO L226 Difference]: Without dead ends: 44471 [2021-11-07 02:05:36,935 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1828 GetRequests, 1821 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:05:36,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44471 states. [2021-11-07 02:05:39,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44471 to 44407. [2021-11-07 02:05:39,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44407 states, 44387 states have (on average 1.3839412440579448) internal successors, (61429), 44406 states have internal predecessors, (61429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:05:39,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44407 states to 44407 states and 61429 transitions. [2021-11-07 02:05:39,400 INFO L78 Accepts]: Start accepts. Automaton has 44407 states and 61429 transitions. Word has length 458 [2021-11-07 02:05:39,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:05:39,401 INFO L470 AbstractCegarLoop]: Abstraction has 44407 states and 61429 transitions. [2021-11-07 02:05:39,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:05:39,401 INFO L276 IsEmpty]: Start isEmpty. Operand 44407 states and 61429 transitions. [2021-11-07 02:05:39,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 459 [2021-11-07 02:05:39,407 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:05:39,407 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:05:39,440 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (23)] Forceful destruction successful, exit code 0 [2021-11-07 02:05:39,732 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-11-07 02:05:39,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:05:39,832 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 40 more)] === [2021-11-07 02:05:39,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:05:39,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1081387619, now seen corresponding path program 1 times [2021-11-07 02:05:39,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:05:39,836 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [251659199] [2021-11-07 02:05:39,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:05:39,836 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:05:39,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:05:39,838 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:05:39,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-11-07 02:05:50,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:05:50,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 4050 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 02:05:50,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:05:51,886 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2021-11-07 02:05:51,887 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:05:53,537 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2021-11-07 02:05:53,537 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:05:53,538 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [251659199] [2021-11-07 02:05:53,538 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [251659199] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:05:53,538 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [998050895] [2021-11-07 02:05:53,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:05:53,538 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:05:53,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:05:53,539 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:05:53,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2021-11-07 02:06:01,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:06:01,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 4050 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:06:01,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:06:02,104 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-11-07 02:06:02,104 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:06:02,823 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-11-07 02:06:02,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [998050895] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:06:02,823 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:06:02,824 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-07 02:06:02,824 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652164787] [2021-11-07 02:06:02,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:06:02,825 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:06:02,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:06:02,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:06:02,826 INFO L87 Difference]: Start difference. First operand 44407 states and 61429 transitions. Second operand has 3 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:06:06,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:06:06,326 INFO L93 Difference]: Finished difference Result 130519 states and 180914 transitions. [2021-11-07 02:06:06,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:06:06,327 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 458 [2021-11-07 02:06:06,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:06:06,534 INFO L225 Difference]: With dead ends: 130519 [2021-11-07 02:06:06,534 INFO L226 Difference]: Without dead ends: 86606 [2021-11-07 02:06:06,603 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1828 GetRequests, 1821 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:06:06,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86606 states. [2021-11-07 02:06:10,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86606 to 86551. [2021-11-07 02:06:10,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86551 states, 86531 states have (on average 1.3859194970588575) internal successors, (119925), 86550 states have internal predecessors, (119925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:06:11,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86551 states to 86551 states and 119925 transitions. [2021-11-07 02:06:11,412 INFO L78 Accepts]: Start accepts. Automaton has 86551 states and 119925 transitions. Word has length 458 [2021-11-07 02:06:11,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:06:11,412 INFO L470 AbstractCegarLoop]: Abstraction has 86551 states and 119925 transitions. [2021-11-07 02:06:11,413 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:06:11,413 INFO L276 IsEmpty]: Start isEmpty. Operand 86551 states and 119925 transitions. [2021-11-07 02:06:11,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 460 [2021-11-07 02:06:11,416 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:06:11,417 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:06:11,444 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (25)] Forceful destruction successful, exit code 0 [2021-11-07 02:06:11,716 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-11-07 02:06:11,817 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:06:11,817 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 40 more)] === [2021-11-07 02:06:11,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:06:11,818 INFO L85 PathProgramCache]: Analyzing trace with hash 1676596784, now seen corresponding path program 1 times [2021-11-07 02:06:11,821 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:06:11,821 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1508180894] [2021-11-07 02:06:11,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:06:11,822 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:06:11,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:06:11,822 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:06:11,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-11-07 02:06:22,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:06:23,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 4067 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 02:06:23,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:06:24,292 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2021-11-07 02:06:24,292 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:06:25,596 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2021-11-07 02:06:25,596 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:06:25,596 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1508180894] [2021-11-07 02:06:25,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1508180894] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:06:25,597 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1451306881] [2021-11-07 02:06:25,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:06:25,597 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:06:25,597 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:06:25,598 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:06:25,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1c468f-c829-4ea8-98b2-f76c78d11a4f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (27)] Waiting until timeout for monitored process [2021-11-07 02:06:33,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:06:33,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 4067 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:06:33,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:06:34,780 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-11-07 02:06:34,781 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:06:35,546 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-11-07 02:06:35,546 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1451306881] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:06:35,546 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:06:35,547 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-07 02:06:35,547 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231526161] [2021-11-07 02:06:35,548 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:06:35,548 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:06:35,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:06:35,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:06:35,549 INFO L87 Difference]: Start difference. First operand 86551 states and 119925 transitions. Second operand has 3 states, 3 states have (on average 141.33333333333334) internal successors, (424), 3 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:06:42,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:06:42,349 INFO L93 Difference]: Finished difference Result 254005 states and 352881 transitions. [2021-11-07 02:06:42,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:06:42,349 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 141.33333333333334) internal successors, (424), 3 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 459 [2021-11-07 02:06:42,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:06:42,729 INFO L225 Difference]: With dead ends: 254005 [2021-11-07 02:06:42,729 INFO L226 Difference]: Without dead ends: 167948 [2021-11-07 02:06:42,820 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1832 GetRequests, 1825 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:06:43,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167948 states. [2021-11-07 02:06:51,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167948 to 167895. [2021-11-07 02:06:51,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167895 states, 167875 states have (on average 1.3899210722263589) internal successors, (233333), 167894 states have internal predecessors, (233333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)